Side beam assembly, chassis and vehicle

Abstract

A side beam assembly (40), a chassis and a vehicle (1); the side beam assembly (40) is used for the vehicle (1); the side beam assembly (40) comprises a plurality of side beam structures (41); the plurality of side beam structures (41) are sealed and connected to each other to enclose a receiving space (41a); the receiving space (41a) is used to receive a battery cell (21); at least one side beam structure (41) is used to be connected to a body (13) of the vehicle (1).

Description

Side beam components, chassis and vehicles Technical Field

[0001] The present application relates to a side beam assembly, a chassis and a vehicle. Background Art

[0002] With the promotion of the concept of energy conservation and emission reduction, more and more fields use electric energy as driving energy. Therefore, the application of batteries in various fields is becoming more and more extensive, and many vehicles equipped with battery cells have also appeared, for example, vehicles that use electric energy as driving energy.

[0003] However, in many existing vehicles equipped with battery cells, the vehicles often fail to provide good protection for the battery cells, which reduces the reliability of the battery cells during operation.

[0004] Summary of the Invention

[0005] The present application provides a side beam assembly, a chassis and a vehicle, which enable the side beam structure to not only bear the weight of the vehicle body, but also provide better protection for the battery cells.

[0006] In a first aspect, some embodiments of the present application provide a side beam assembly, which is used for a vehicle. The side beam assembly includes a plurality of side beam structures, which are sealed and connected to each other to enclose a storage space for accommodating battery cells, wherein at least one side beam structure is used to connect to the body of the vehicle.

[0007] In the technical solutions of some embodiments of the present application, the side beam assembly includes a plurality of side beam structures. By providing at least one side beam structure for connection with the vehicle body, the side beam assembly can play a bearing role on the vehicle body. In addition, by sealingly connecting the plurality of side beam structures to each other to enclose a storage space, the storage space can be used to accommodate the battery cells of the vehicle, so that the side beam structure can reduce the impact of external impact on the battery cells, and the side beam assembly can also be connected to other sealing parts of the vehicle, so that the storage space can be relatively closed, so that water or water vapor outside the storage space is not easy to enter the storage space and affect the battery cells, and the side beam assembly can also be used to withstand at least part of the impact applied to the vehicle. Therefore, the side beam assembly can provide better protection for the battery cells.

[0008] In some embodiments, at least one side beam structure includes a first wall portion and a first cavity enclosed by the first wall portion. A partition wall is provided within at least a portion of the first cavity, the partition wall being used to separate the first cavity into a first sub-cavity and a second sub-cavity. The partition wall and at least a portion of the first wall portion are sealed to each other to seal the first sub-cavity. The first wall portion enclosing the first sub-cavity is used to connect to a sealing component of the vehicle. By providing the partition wall to separate the first cavity into the second sub-cavity and the sealed first sub-cavity, the second sub-cavity can communicate with the outside world and can be used to connect to the vehicle body or to arrange at least a portion of the vehicle's wiring harness or piping, thereby improving the compactness of the vehicle's internal structure. Moreover, the first sub-cavity can be relatively sealed, so that water or water vapor in the external environment is not easy to enter the first sub-cavity, so that when the first wall portion that encloses the first sub-cavity is connected to the vehicle's seal, the environment of the first sub-cavity at the connection between the first wall portion and the seal is relatively dry, so that water or water vapor is not easy to enter the accommodating space through the connection between the first wall portion and the seal and affect the normal operation of the battery cell, so as to further improve the protection of the side beam assembly to the battery cell.

[0009] In some embodiments, the first sub-cavity is located on a side of at least a portion of the second sub-cavity that is closer to the storage space; and / or, the first sub-cavity is located on at least one side of at least a portion of the second sub-cavity in the first direction. By arranging the first sub-cavity on a side of at least a portion of the second sub-cavity that is closer to the storage space, and / or by arranging the first sub-cavity on at least one side of at least a portion of the second sub-cavity in the first direction, the first sub-cavity can be located relatively outside the second sub-cavity, thereby facilitating connection between the vehicle's seal and the first wall portion enclosing the first sub-cavity.

[0010] In some embodiments, the plurality of side beam structures include two first side beams spaced apart along the second direction, at least one first side beam includes a first sub-cavity and a second sub-cavity, and the first sub-cavity and / or the second sub-cavity are extended and formed along a third direction, wherein the first direction, the second direction and the third direction intersect with each other. By setting the first sub-cavity to be extended and formed along the third direction, that is, setting at least part of the partition wall to be extended and formed along the third direction, the first wall portion enclosing the first sub-cavity has a larger area in the third direction for connection with the seal, thereby improving the connection reliability between the side beam structure and the seal, and the first sub-cavity extended and formed in only one direction is also easy to process and manufacture; and / or, by setting the second sub-cavity to be extended and formed along the third direction, the wiring harness or pipeline that needs to be arranged in the third direction in the vehicle can be better arranged in the second sub-cavity.

[0011] In some embodiments, the side beam assembly further includes a sealing portion connected to the first wall and the partition wall at both ends of the second sub-cavity in the third direction. The sealing portion, at least a portion of the partition wall, and at least a portion of the first wall enclose a sealed first sub-cavity. Providing the sealing portion to seal the ends of the first sub-cavity in the third direction prevents external water or water vapor from entering the first sub-cavity.

[0012] In some embodiments, the plurality of side beam structures further include two second side beams spaced apart along a third direction, and the two second side beams are located between two adjacent first side beams, at least one second side beam includes a second wall portion and a second cavity enclosed by the second wall portion, the second cavity extending along the second direction, wherein the second side beam having the second cavity is sealedly connected to the first wall portions of the two first side beams at both ends in the second direction. By providing the second side beam having the second cavity with a sealed connection to the first wall portions of the two first side beams at both ends in the second direction, the second wall portion and at least a portion of the first wall portion can enclose a relatively closed second cavity, making it difficult for water or water vapor in the external environment to enter the second cavity. Therefore, when the second wall portion is connected to the vehicle's seal, the environment in the second cavity at the connection between the second wall portion and the seal is relatively dry, making it difficult for water or water vapor to enter the accommodation space through the connection between the second wall portion and the seal and affect the normal operation of the battery cell, thereby improving the protection of the side beam assembly to the battery cell.

[0013] In some embodiments, a first connecting portion is provided on at least one side of the first side beam in the first direction and / or on a side of the first side beam away from the accommodating space in the second direction, so that the first side beam can be connected to the vehicle body through the first connecting portion. By providing the first connecting portion on at least one side of the first side beam in the first direction and / or providing the first connecting portion on a side of the first side beam away from the accommodating space in the second direction, the first side beam can play a bearing role on the vehicle body, and the first side beam can also be used to withstand at least part of the impact applied to the vehicle along the second direction, thereby improving the protective effect of the side beam assembly on the vehicle.

[0014] In some embodiments, a protrusion is provided at the end of the first side beam near the first connecting portion, protruding toward one side of the accommodating space, and the protrusion is used to connect with the sealing member. By providing the protrusion at the end of the first side beam near the first connecting portion, protruding toward one side of the accommodating space, a sufficient connection area is provided between the vehicle's sealing member and the first side beam, thereby improving the connection between the side beam assembly and the sealing member.

[0015] On the second aspect, some embodiments of the present application provide a chassis for a vehicle, the chassis comprising a seal and any one of the aforementioned side beam assemblies, the seal being sealedly connected to both sides of the side beam assembly in a first direction, and enclosing the side beam assembly to form an enclosed accommodation space.

[0016] In the technical solutions of some embodiments of the present application, the side beam assembly connected to the vehicle body can not only play a bearing role for the vehicle body, but also can be enclosed with the seal to form a relatively closed accommodation space. The closed accommodation space can be used to accommodate battery cells to reduce the influence of external water or water vapor on the battery cells, and the side beam assembly can also be used to withstand at least part of the impact applied to the vehicle, so that the chassis can provide better protection for the battery cells.

[0017] In some embodiments, the connection between the sealing member and the side beam assembly is coated with a sealant, thereby further improving the airtightness of the accommodation space.

[0018] In a third aspect, some embodiments of the present application provide a vehicle, comprising the chassis of any one of the aforementioned items. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0020] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0021] FIG2 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0022] FIG3 is a schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application;

[0023] FIG4 is a schematic structural diagram of a side beam assembly containing a battery cell according to some embodiments of the present application;

[0024] FIG5 is a schematic diagram of the connection structure between the side beam assembly and the sealing member in some embodiments of the present application;

[0025] FIG6 is a schematic cross-sectional view of a partial connection between a side beam assembly, a seal, and a vehicle body in a third direction according to some embodiments of the present application;

[0026] FIG7 is a schematic cross-sectional view of a partial connection between a side beam assembly, a seal, and a vehicle body in a third direction according to some other embodiments of the present application;

[0027] FIG8 is a schematic structural diagram of a side beam assembly according to some embodiments of the present application;

[0028] FIG9 is a schematic cross-sectional view of a partial connection between a side beam assembly, a seal, and a vehicle body in a second direction according to some embodiments of the present application;

[0029] FIG10 is a schematic cross-sectional view of a partial connection between a side beam assembly, a seal, and a vehicle body in a third direction according to some further embodiments of the present application;

[0030] FIG11 is a schematic cross-sectional view of the partial connection between the side beam assembly, the seal and the vehicle body in the second direction according to some other embodiments of the present application.

[0031] In the drawings, the drawings are not drawn to scale.

[0032] The accompanying figures are as follows:

[0033] Vehicle 1; battery 10; controller 11; motor 12; vehicle body 13;

[0034] Battery module 20; battery cell 21; end cap 211; electrode terminal 211a; housing 212; electrode assembly 213;

[0035] Box body 30; first box body portion 301; second box body portion 302;

[0036] Side beam assembly 40; first opening 40a; second opening 40b; communicating opening 40c; side beam structure 41; accommodating space 41a; partition wall 41b; first side beam 411; first wall portion 411a; first cavity 411b; first sub-cavity 411c; second sub-cavity 411d; first connecting portion 411e; first connecting hole 411f; raised portion 411g; third connecting hole 411h; second side beam 412; second wall portion 412a; second cavity 412b; third sub-cavity 412c; fourth sub-cavity 412d; second connecting portion 412e; second connecting hole 412f; sealing portion 413;

[0037] Seal 50;

[0038] First direction X;

[0039] Second direction Y;

[0040] The third direction Z. DETAILED DESCRIPTION

[0041] 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 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.

[0042] 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 for the purpose of describing specific embodiments only 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0047] The term "plurality" used in this application refers to two or more (including two).

[0048] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0049] Batteries are being used more and more widely in various fields, and many vehicles equipped with battery cells have also appeared. For example, vehicles that use electricity as driving energy. In such vehicles, their side beam structures often only serve to support the vehicle body, or only serve to withstand external impacts. The existing side beam structures are often unable to be used to isolate water or water vapor from entering the space containing the battery cells, so that water or water vapor has a certain probability of contacting the battery cells, affecting the normal operation of the battery cells and reducing the working reliability of the battery cells.

[0050] To enhance the protection provided by the side beam structure for the battery cells, a side beam assembly can be provided to prevent external water or moisture from impacting the battery cells of the vehicle. Specifically, the side beam assembly can include multiple side beam structures, which are sealed end to end and connected to form a housing space, which can be used to accommodate the battery cells.

[0051] In such a side beam assembly, the side beam assembly may include multiple side beam structures, at least one of which may be used to connect to the vehicle body, so that the side beam assembly can bear the weight of the vehicle body. Furthermore, by sealing the multiple side beam structures end to end to form a storage space, the storage space can be used to accommodate the battery cells of the vehicle, so that the side beam structure can reduce the impact of external impact on the battery cells, and the side beam assembly can also be connected to other sealing parts of the vehicle, so that the storage space can be relatively sealed, making it difficult for external water or water vapor to enter the storage space and affect the operation of the battery cells, so that the side beam assembly can provide better protection for the battery cells.

[0052] The embodiments of the present application provide a side beam assembly, and a chassis and a vehicle including such a side beam assembly. Such a side beam assembly can be suitable for protecting and accommodating any battery cell, or the side beam assembly can be suitable for protecting and accommodating any integrated battery including multiple battery cells, such as a battery module and a battery pack, or a battery including a primary battery and a secondary battery. In some embodiments, the type of battery cell can be a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid (or lead storage) battery, a lithium-ion battery, a sodium-ion battery, a polymer battery, etc. Such a battery cell can be applicable to various electrical devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, electric vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; the battery cell is used to provide electrical energy for the above-mentioned electrical devices.

[0053] The chassis provided in the embodiments of the present application can be used in any vehicle that requires a battery cell. The vehicle provided in the embodiments of the present application can be any fuel-powered vehicle, gas-powered vehicle, or new energy vehicle that requires a battery cell. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle.

[0054] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery cells and vehicles described above, but for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0055] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1 provided in some embodiments of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 10 is provided inside the vehicle 1, and the battery 10 can be provided at the bottom, head or tail of the vehicle 1. The battery 10 can be used to power the vehicle 1, for example, the battery 10 can serve as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 11 and a motor 12, and the controller 11 is used to control the battery 10 to power the motor 12, for example, for starting, navigating and driving the vehicle 1.

[0056] In some embodiments of the present application, the battery 10 can serve not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0057] Please refer to Figure 2, which shows a schematic diagram of the decomposed structure of the battery 10 of an embodiment of the present application. In order to meet different power usage requirements, the battery 10 may include a plurality of battery cells 21, and the battery cell 21 refers to the smallest unit that constitutes the battery module 20 or the battery pack. A plurality of battery cells 21 can be connected in series and / or in parallel via electrode terminals for application in various applications. The battery 10 mentioned in this application includes a battery module 20 or a battery pack. Among them, a plurality of battery cells 21 can be connected in series, in parallel, or in mixed connection, and mixed connection refers to a mixture of series and parallel connection. In the embodiment of the present application, a plurality of battery cells can directly constitute a battery pack, or they can first constitute a battery module 20, and the battery module 20 can then constitute a battery pack.

[0058] As shown in FIG. 2 , in some embodiments, the battery 10 may include a case 30 and a battery cell 21 , wherein the battery cell 21 is housed in the case 30 .

[0059] The housing 30 may be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as rectangular parallelepiped, cylinder, or sphere, and the present embodiment is not limited thereto. The housing 30 may be made of an alloy material such as an aluminum alloy or an iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin, and the present embodiment is not limited thereto.

[0060] The housing 30 is used to accommodate the battery cells 21 and can have various structures. In some embodiments, the housing 30 can include a first housing portion 301 and a second housing portion 302. The first housing portion 301 and the second housing portion 302 overlap each other and together define a storage space for accommodating the battery cells 21. The second housing portion 302 can be a hollow structure with one end open. The first housing portion 301 is a plate-like structure, and the first housing portion 301 overlaps the open side of the second housing portion 302 to form the housing 30 with a storage space. The first housing portion 301 and the second housing portion 302 can also each be a hollow structure with one end open. The open side of the first housing portion 301 overlaps the open side of the second housing portion 302 to form the housing 30 with a storage space. Of course, the first housing portion 301 and the second housing portion 302 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0061] In order to improve the sealing performance after the first box body 301 and the second box body 302 are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body 301 and the second box body 302 .

[0062] Assuming that the first box body portion 301 covers the top of the second box body portion 302 , the first box body portion 301 can also be called an upper box cover, and the second box body portion 302 can also be called a lower box cover.

[0063] In the battery 10 , there can be one or more battery cells 21 . If there are multiple battery cells 21 , the multiple battery cells 21 can be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections within the multiple battery cells 21 . The multiple battery cells 21 can be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery module 20 can be housed within the housing 30 . Alternatively, multiple battery cells 21 can be first connected in series, in parallel, or in a hybrid connection to form a battery module 20 , and then the multiple battery modules 20 can be connected in series, in parallel, or in a hybrid connection to form a single unit and housed within the housing 30 .

[0064] In the present application, the battery cell 21 may include a lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of the present application are not limited to this. The battery cell 21 may be cylindrical, flat, rectangular, or other shapes, and the embodiments of the present application are not limited to this. The battery cell 21 is generally divided into three types according to the packaging method: cylindrical battery cells 21, square battery cells 21, and soft-pack battery cells 21, and the embodiments of the present application are not limited to this. However, for the sake of simplicity, the following embodiments are all explained using the square battery cell 21 as an example.

[0065] FIG3 is a schematic diagram of the exploded structure of a battery cell 21 provided in some embodiments of the present application. A battery cell 21 is the smallest unit of a battery. As shown in FIG3 , a battery cell 21 includes an end cap 211 , a housing 212 , and an electrode assembly 213 .

[0066] The end cap 211 is a component that covers the opening of the housing 212 to isolate the internal environment of the battery cell 21 from the external environment. The shape of the end cap 211 can be adapted to the shape of the housing 212 to fit the housing 212. Optionally, the end cap 211 can be made of a material with a certain degree of hardness and strength (such as an aluminum alloy). This prevents the end cap 211 from deforming when subjected to compression or collision, providing the battery cell 21 with greater structural strength and improved safety. The end cap 211 can be provided with functional components such as electrode terminals 211a. The electrode terminals 211a can be used to electrically connect to the electrode assembly 213 to transmit or receive electrical energy from the battery cell 21. In some embodiments, the end cap 211 can also be provided with a pressure relief mechanism to release internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. The end cap 211 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this is not particularly limited in the present embodiment. In some embodiments, an insulating member may be provided inside the end cap 211 to isolate the first electrical connection member in the housing 212 from the end cap 211 to reduce the risk of short circuit.

[0067] The shell 212 is a component used to cooperate with the end cap 211 to form the internal environment of the battery cell 21, wherein the formed internal environment can be used to accommodate the electrode assembly 213, the electrolyte (not shown in the figure) and other components. The shell 212 and the end cap 211 can be independent components. An opening can be set on the shell 212, and the internal environment of the battery cell 21 is formed by covering the opening with the end cap 211 at the opening. Without limitation, the end cap 211 and the shell 212 can also be integrated. Specifically, the end cap 211 and the shell 212 can form a common connection surface before other components are put into the shell. When the interior of the shell 212 needs to be encapsulated, the end cap 211 is covered with the shell 212. The shell 212 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 212 can be determined according to the specific shape and size of the electrode assembly 213. The shell 212 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0068] The electrode assembly 213 is a component in the battery cell 21 where electrochemical reactions occur. One or more electrode assemblies 213 may be contained in the housing 212. The electrode assembly 213 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly 213, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute a tab (not shown in the figure). The positive electrode tab and the negative electrode tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery 10, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs are connected to the electrode terminals 211a to form a current loop.

[0069] Figure 4 is a schematic structural diagram of a side beam assembly 40 containing a battery cell 21 in some embodiments of the present application, and Figure 5 is a schematic structural diagram of the connection between the side beam assembly 40 and the seal 50 in some embodiments of the present application, where the X direction in the figure is the first direction, the Y direction in the figure is the second direction, and the Z direction in the figure is the third direction.

[0070] As shown in Figures 4 and 5, some embodiments of the present application provide a side beam assembly 40, which is used for vehicle 1. The side beam assembly 40 includes multiple side beam structures 41, and the multiple side beam structures 41 are sealed and connected to each other to enclose a accommodating space 41a, and the accommodating space 41a is used to accommodate battery cells 21, wherein at least one side beam structure 41 is used to connect to the body 13 of the vehicle 1.

[0071] As shown in Figure 4, in some embodiments, the storage space 41a can be used to directly accommodate a battery cell 21, so that the side beam assembly 40 can directly provide protection for the battery cell 21. In some embodiments, the storage space 41a can be used to directly accommodate multiple battery cells 21. Multiple battery cells 21 can be connected in series, in parallel, or in a hybrid connection. Hybrid connection refers to a mixture of series and parallel connections to improve the storage efficiency of the storage space 41a. In other embodiments, the storage space 41a can also be used to accommodate the battery 10 of any of the above embodiments that includes multiple battery cells 21 as described in any of the above solutions. For example, the storage space 41a can be used to accommodate the battery 10 including the box 30.

[0072] In some embodiments of the side beam assembly 40 provided herein, the sealing connection between the side beam structures 41 may be achieved by any method. In some embodiments, the side beam structures 41 may be sealed by welding. In some embodiments, the welds of the side beam structures 41 may be polished to improve the sealing effect and smoothness of the sealed connections between the side beam structures 41.

[0073] In the side beam structure 41 provided in some embodiments of the present application, the material of the side beam structure 41 can be any material with good strength. For example, the side beam structure 41 can be made of aluminum extrusions, so that the side beam structure 41 has certain strength and is easy to process.

[0074] FIG6 is a schematic cross-sectional view of a partial connection between the side beam assembly 40 , the seal 50 and the vehicle body 13 in the third direction Z according to some embodiments of the present application.

[0075] As shown in Figures 4 to 6 , in the technical solutions of some embodiments of the present application, the side beam assembly 40 includes multiple side beam structures 41. By providing at least one side beam structure 41 for connection to the vehicle body 13 of the vehicle 1, the side beam assembly 40 can support the vehicle body 13 of the vehicle 1. Furthermore, by sealingly connecting the multiple side beam structures 41 to each other to enclose a storage space 41a, the storage space 41a can be used to accommodate the battery cells 21 of the vehicle 1. This allows the side beam structures 41 to reduce the impact of external impacts on the battery cells 21. Furthermore, the side beam assembly 40 can also be connected to other sealing components 50 of the vehicle 1, thereby making the storage space 41a relatively sealed, preventing water or moisture outside the storage space 41a from entering the storage space 41a and affecting the battery cells 21. Furthermore, the side beam assembly 40 can also withstand at least some impacts applied to the vehicle 1. Therefore, the side beam assembly 40 can provide better protection for the battery cells 21.

[0076] In some embodiments, the accommodating space 41a formed by multiple side beam structures 41 has a first opening 40a and a second opening 40b relative to each other in the first direction X. The side beam assembly 40 can be sealedly connected to the seal 50 of the vehicle 1 on both sides in the first direction X to seal the first opening 40a and the second opening 40b, so that the accommodating space 41a can be relatively closed.

[0077] As shown in Figure 6, in some embodiments, at least one side beam structure 41 includes a first wall portion 411a and a first cavity 411b formed by the first wall portion 411a, and a partition wall 41b is provided in at least a portion of the first cavity 411b. The partition wall 41b is used to separate the first cavity 411b into a first sub-cavity 411c and a second sub-cavity 411d, and the partition wall 41b and at least a portion of the first wall portion 411a are sealed to each other to seal the first sub-cavity 411c, and the first wall portion 411a enclosing the first sub-cavity 411c is used to be connected to the sealing member 50 of the vehicle 1.

[0078] In some embodiments, the material of the partition wall 41b and the first wall portion 411a can be the same to facilitate the production and manufacture of the side beam structure 41. In some embodiments, the partition wall 41b and the first wall portion 411a can be integrally formed to reduce the difficulty of manufacturing the side beam structure 41.

[0079] By providing a partition wall 41b to separate the first cavity 411b into a second sub-cavity 411d and a sealed first sub-cavity 411c, the second sub-cavity 411d can communicate with the outside world and can be used to connect to the vehicle body 13 or to route at least part of the vehicle 1's wiring harness or piping, thereby improving the compactness of the internal structure of the vehicle 1. Furthermore, the first sub-cavity 411c is relatively sealed, making it difficult for water or moisture from the external environment to enter the first sub-cavity 411c. Consequently, when the first wall portion 411a enclosing the first sub-cavity 411c is connected to the seal 50 of the vehicle 1, the environment in the first sub-cavity 411c at the junction of the first wall portion 411a and the seal 50 is relatively dry, making it difficult for water or moisture to enter the accommodating space 41a through the junction of the first wall portion 411a and the seal 50 and affect the normal operation of the battery cell 21, thereby further improving the protection of the battery cell 21 by the side beam assembly 40.

[0080] As shown in FIG6 , the number and position of the first sub-cavity 411c and the second sub-cavity 411d in the embodiment of the present application can be arranged in various ways. In some embodiments, the partition wall 41b can be connected to the first wall portion 411a at multiple points, so that the partition wall 41b can improve the structural strength of the side beam structure 41 and also enable the partition wall 41b to divide the first cavity 411b into multiple first sub-cavities 411c and / or second sub-cavities 411d. In some embodiments, the first sub-cavity 411c can be provided only at the location where the first wall portion 411a needs to connect to the seal 50 of the vehicle 1.

[0081] FIG7 is a schematic cross-sectional view of the partial connection of the side beam assembly 40 , the seal 50 and the vehicle body 13 in the third direction Z according to some other embodiments of the present application.

[0082] In some embodiments, as shown in Figure 6, the first sub-cavity 411c is located on one side of at least part of the second sub-cavity 411d close to the accommodating space 41a; and / or, as shown in Figure 7, the first sub-cavity 411c is located on at least one side of at least part of the second sub-cavity 411d in the first direction X.

[0083] By arranging the first sub-cavity 411c to be located on a side of at least a portion of the second sub-cavity 411d close to the accommodating space 41a, and / or by arranging the first sub-cavity 411c to be located on at least one side of at least a portion of the second sub-cavity 411d in the first direction X, the first sub-cavity 411c can be located on the outer side of the second sub-cavity 411d to facilitate the connection between the sealing member 50 of the vehicle 1 and the first wall portion 411a that encloses the first sub-cavity 411c.

[0084] In the embodiments of the present application, the shape of the first sub-cavity 411c can be any desired shape. The shape of the first sub-cavity 411c can be configured based on the connection method between the sealing member 50 and the first wall portion 411a and the shape of the connector. In some embodiments, the sealed first sub-cavity 411c can be formed solely by the partition wall 41b and at least a portion of the first wall portion 411a. By properly configuring the shape of the partition wall 41b and at least a portion of the first wall portion 411a, the shape of the first sub-cavity 411c can be configured more flexibly.

[0085] FIG8 is a schematic structural diagram of a side beam assembly 40 according to some embodiments of the present application.

[0086] As shown in Figures 7 to 8, in some embodiments, the multiple side beam structures 41 include two first side beams 411 spaced apart along the second direction Y, at least one first side beam 411 includes a first sub-cavity 411c and a second sub-cavity 411d, and the first sub-cavity 411c and / or the second sub-cavity 411d are extended and formed along the third direction Z, wherein the first direction X, the second direction Y and the third direction Z intersect each other.

[0087] In some embodiments, the third direction Z can be the direction when the vehicle 1 is moving in a straight line, and the first side beam 411 can be used to serve as the door sill beam of the vehicle 1, so that the first side beam 411 can be connected to the vehicle body 13 and bear part of the weight of the vehicle body 13.

[0088] By setting the first sub-cavity 411c to extend and form along the third direction Z, that is, setting at least part of the partition wall 41b to extend and form along the third direction Z, the first wall portion 411a enclosing the first sub-cavity 411c has a larger area in the third direction Z for connection with the seal 50, thereby improving the connection reliability between the side beam structure 41 and the seal 50, and the first sub-cavity 411c extended and formed in only one direction is also convenient for processing and manufacturing; and / or, by setting the second sub-cavity 411d to extend and form along the third direction Z, the wiring harness or pipeline that needs to be arranged in the third direction Z in the vehicle 1 can be better arranged in the second sub-cavity 411d.

[0089] In some embodiments of the present application, the relative positional relationship between the two first side beams 411 spaced apart along the second direction Y can be configured based on the structural layout of the vehicle body 13 or the arrangement of the battery cells 21. In some embodiments, the two first side beams 411 spaced apart along the second direction Y can be arranged parallel to each other. In other embodiments, the two first side beams 411 spaced apart along the second direction Y can be arranged at a predetermined angle between their extension directions.

[0090] In some embodiments, the first side beam 411 is formed to extend along the third direction Z. The specific extension dimension of the first side beam 411 in the third direction Z can be set according to the structural layout of the vehicle 1. In some embodiments, the extension dimensions of two first side beams 411 spaced apart along the second direction Y in the third direction Z can be the same.

[0091] In some embodiments, the second sub-cavity 411d may not require special sealing, and at least a portion of the first wall portion 411a enclosing the second sub-cavity 411d may be used to connect to the vehicle body 13. In some embodiments, as shown in FIG8 , at least a portion of the first wall portion 411a enclosing the second sub-cavity 411d may be provided with a communication opening 40c that connects the second sub-cavity 411d with the outside world, allowing at least a portion of the wiring harness or piping of the vehicle 1 to enter the second sub-cavity 411d through the communication opening 40c, thereby facilitating the layout of the wiring harness or piping of the vehicle 1.

[0092] As shown in Figure 8, in some embodiments, when the second sub-cavity 411d is extended and formed along the third direction Z, the connecting opening 40c can be arranged on both sides of the second sub-cavity 411d in the third direction Z, so that at least part of the wiring harness or pipeline of the vehicle 1 can enter the second sub-cavity 411d through the connecting opening 40c and be arranged along the third direction Z.

[0093] As shown in Figure 8, in some embodiments, the side beam assembly 40 also includes a sealing portion 413, which is connected to the first wall portion 411a and the partition wall 41b at both ends of the second sub-cavity 411d in the third direction Z. The sealing portion 413, at least part of the partition wall 41b and at least part of the first wall portion 411a enclose a closed first sub-cavity 411c.

[0094] In some embodiments, the material of the sealing portion 413 can be the same as that of the first wall portion 411a to facilitate the production and manufacture of the side beam assembly 40. In some embodiments, the sealing portion 413 can be integrally formed with the first wall portion 411a or the partition wall 41b, or the sealing portion 413 can be welded to the first wall portion 411a or the partition wall 41b to reduce the difficulty of manufacturing the side beam structure 41.

[0095] In some embodiments, the specific shape of the sealing portion 413 can be set based on the shape of the opening enclosed by at least a portion of the first wall portion 411a and the partition wall 41b. In some embodiments, the end of the first wall portion 411a in the third direction Z can be flush with the end of the partition wall 41b in the third direction Z to facilitate the installation of the sealing portion 413.

[0096] The sealing portion 413 is provided to seal the end of the first sub-cavity 411 c in the third direction Z, so that external water or water vapor is not easy to enter the first sub-cavity 411 c.

[0097] FIG9 is a schematic cross-sectional view of a partial connection between the side beam assembly 40 , the seal 50 and the vehicle body 13 in the second direction Y according to some embodiments of the present application.

[0098] As shown in Figures 8 and 9, in some embodiments, the multiple side beam structures 41 also include two second side beams 412 spaced apart along the third direction Z, and the two second side beams 412 are located between two adjacent first side beams 411, and at least one second side beam 412 includes a second wall portion 412a and a second cavity 412b formed by the second wall portion 412a, and the second cavity 412b is extended and formed along the second direction Y, wherein the two ends of the second side beam 412 with the second cavity 412b in the second direction Y are respectively sealed and connected to the first wall portions 411a of the two first side beams 411.

[0099] By providing a second side beam 412 with a second cavity 412b, the two ends in the second direction Y of which are respectively sealedly connected to the first wall portions 411a of the two first side beams 411, the second wall portion 412a and at least part of the first wall portion 411a can be enclosed to form a relatively closed second cavity 412b, so that water or water vapor in the external environment is not easy to enter the second cavity 412b, so that when the second wall portion 412a is connected to the seal 50 of the vehicle 1, the environment of the second cavity 412b at the connection between the second wall portion 412a and the seal 50 is relatively dry, so that water or water vapor is not easy to enter the accommodating space 41a through the connection between the second wall portion 412a and the seal 50 and affect the normal operation of the battery cell 21, thereby improving the protection of the side beam assembly 40 on the battery cell 21.

[0100] In some embodiments of the present application, the relative positional relationship between the two second side beams 412 spaced apart along the third direction Z can be configured based on the structural layout of the vehicle body 13 or the arrangement of the battery cells 21. In some embodiments, the two second side beams 412 spaced apart along the third direction Z can be arranged parallel to each other. In other embodiments, the two second side beams 412 spaced apart along the third direction Z can be arranged at a predetermined angle between their extension directions.

[0101] In some embodiments, the second side beam 412 is formed to extend along the second direction Y. The specific extension dimension of the second side beam 412 in the second direction Y can be set according to the structural layout of the vehicle 1. In some embodiments, the extension dimensions of two second side beams 412 spaced apart along the third direction Z in the second direction Y can be the same.

[0102] As shown in Figure 9, in some embodiments, a partition wall 41b may also be provided in at least part of the second cavity 412b. The partition wall 41b in the second cavity 412b is used to separate the second cavity 412b into a third sub-cavity 412c and a fourth sub-cavity 412d, and the partition wall 41b and at least part of the second wall portion 412a are sealed to each other to seal the third sub-cavity 412c. The second wall portion 412a enclosed to form the third sub-cavity 412c is used to be connected to the sealing member 50 of the vehicle 1.

[0103] As shown in Figures 8 and 9 , in some embodiments, fourth sub-cavity 412d may not require special sealing. In some embodiments, at least a portion of second wall portion 412a enclosing fourth sub-cavity 412d may also be provided with a communication opening 40c that connects fourth sub-cavity 412d with the outside world, allowing at least a portion of wiring harnesses or pipelines of vehicle 1 to enter fourth sub-cavity 412d through communication opening 40c, thereby facilitating the layout of wiring harnesses or pipelines of vehicle 1.

[0104] By providing a partition wall 41b to separate the second cavity 412b into a fourth sub-cavity 412d and a sealed third sub-cavity 412c, the fourth sub-cavity 412d is open to the outside world and can be used to route at least part of the wiring harness or piping of the vehicle 1, thereby improving the compactness of the internal structure of the vehicle 1. Furthermore, the third sub-cavity 412c is relatively sealed, making it difficult for water or moisture from the external environment to enter the third sub-cavity 412c. Consequently, when the second wall portion 412a enclosing the third sub-cavity 412c is connected to the seal 50 of the vehicle 1, the environment in the third sub-cavity 412c at the junction of the second wall portion 412a and the seal 50 is relatively dry, making it difficult for water or moisture to enter the accommodating space 41a through the junction of the second wall portion 412a and the seal 50 and affect the normal operation of the battery cell 21, thereby further improving the protection of the battery cell 21 by the side beam assembly 40.

[0105] As shown in Figures 8 and 9, in some embodiments, the communication opening 40c may be provided on at least one side of the fourth sub-cavity 412d in the first direction X and / or the third direction Z to facilitate the routing of wiring harnesses or piping in the vehicle 1. In some embodiments, the specific shapes and positions of the third sub-cavity 412c and the fourth sub-cavity 412d may be similar to those of the first sub-cavity 411c and the second sub-cavity 411d. For example, the third sub-cavity 412c may be located on a side of at least a portion of the fourth sub-cavity 412d that is adjacent to the accommodating space 41a; and / or the third sub-cavity 412c may be located on at least one side of at least a portion of the fourth sub-cavity 412d in the first direction X. For another example, the third sub-cavity 412c and / or the fourth sub-cavity 412d may be formed to extend along the second direction Y, etc., which will not be further described herein.

[0106] FIG10 is a schematic cross-sectional view of a partial connection between the side beam assembly 40 , the seal 50 and the vehicle body 13 in the third direction Z according to some further embodiments of the present application.

[0107] As shown in Figure 10, in some embodiments, the first side beam 411 is provided with a first connecting portion 411e on at least one side in the first direction X and / or on the side away from the accommodating space 41a in the second direction Y, so that the first side beam 411 can be connected to the vehicle body 13 through the first connecting portion 411e.

[0108] In some embodiments, the first connecting portion 411e can be arranged to protrude from the first side beam 411 on at least one side of the first side beam 411 in the first direction X and / or on the side of the first side beam 411 away from the accommodating space 41a in the second direction Y, so that the first connecting portion 411e can have a larger area that can be connected to the body 13 of the vehicle 1, so as to improve the connection stability between the first side beam 411 and the body 13.

[0109] In some embodiments, the first connecting portion 411e may extend in the same direction as the first side beam 411. In some embodiments, the first connecting portion 411e may be formed by extending along the third direction Z, and the extension dimension of the first connecting portion 411e in the third direction Z may be less than or equal to the extension dimension of the first side beam 411 in the third direction Z.

[0110] In some embodiments of the present application, the first connection portion 411e can be connected to the vehicle body 13 in any manner. In some embodiments, the first connection portion 411e can be welded to the vehicle body 13. In other embodiments, as shown in FIG10 , the first connection portion 411e can be provided with a first connection hole 411f, so that the first connection portion 411e and the vehicle body 13 can be connected through the first connection hole 411f.

[0111] By arranging the first connecting portion 411e on at least one side of the first side beam 411 in the first direction X, and / or arranging the first connecting portion 411e on the side of the first side beam 411 away from the accommodating space 41a in the second direction Y, the first side beam 411 can play a bearing role on the body 13 of the vehicle 1, and the first side beam 411 can also be used to withstand at least part of the impact applied to the vehicle 1 along the second direction Y, thereby improving the protective effect of the side beam assembly 40 on the vehicle 1.

[0112] FIG11 is a schematic cross-sectional view of the partial connection of the side beam assembly 40 , the seal 50 and the vehicle body 13 in the second direction Y according to some other embodiments of the present application.

[0113] As shown in Figure 11, in some embodiments, the second side beam 412 is provided with a second connecting portion 412e on at least one side in the first direction X and / or on the side away from the accommodating space 41a in the third direction Z, so that the second side beam 412 can be connected to the vehicle body 13 through the second connecting portion 412e.

[0114] In some embodiments, the second connecting portion 412e can be arranged to protrude from the second side beam 412 on at least one side of the second side beam 412 in the first direction X and / or on the side of the second side beam 412 away from the accommodating space 41a in the third direction Z, so that the second connecting portion 412e can have a larger area that can be connected to the body 13 of the vehicle 1, so as to improve the connection stability between the second side beam 412 and the body 13.

[0115] In some embodiments, the second connecting portion 412e may extend in the same direction as the second side beam 412. In some embodiments, the second connecting portion 412e may be formed to extend along the second direction Y, and the extension dimension of the second connecting portion 412e in the second direction Y may be less than or equal to the extension dimension of the second side beam 412 in the third direction Z.

[0116] In some embodiments of the present application, the second connecting portion 412e can be connected to the vehicle body 13 in any manner. In some embodiments, the second connecting portion 412e can be welded to the vehicle body 13. In other embodiments, as shown in FIG11 , the second connecting portion 412e includes a second connecting hole 412f, allowing the second connecting portion 412e and the vehicle body 13 to be connected via the second connecting hole 412f. In some embodiments, when the second side beam 412 has a third sub-cavity 412c and a fourth sub-cavity 412d, the second connecting portion 412e can be disposed on the second wall portion 412a that encloses and forms the fourth sub-cavity 412d.

[0117] As shown in FIG. 10 , in some embodiments, a protrusion 411 g protruding toward one side of the accommodating space 41 a is provided at the end of the first side beam 411 close to the first connecting portion 411 e , and the protrusion 411 g is used to connect with the sealing member 50 .

[0118] In some embodiments, the protrusion 411g can have any shape. In some embodiments, the protrusion 411g can extend in the same direction as the first side rail 411. In some embodiments, the protrusion 411g can be formed by extending along the third direction Z, and the extension dimension of the protrusion 411g in the third direction Z can be less than or equal to the extension dimension of the first side rail 411 in the third direction Z.

[0119] By providing a protrusion 411g protruding toward the side of the accommodating space 41a at the end of the first side beam 411 close to the first connecting portion 411e, a relatively sufficient connection area is provided between the seal 50 of the vehicle 1 and the first side beam 411, thereby improving the connection effect between the side beam assembly 40 and the seal 50.

[0120] According to some embodiments of the present application, some embodiments of the present application provide a chassis, which is used for a vehicle 1. The chassis includes a seal 50 and the side beam assembly 40 described in any of the above schemes. The seal 50 is sealed and connected to both sides of the side beam assembly 40 in the first direction X, and is enclosed with the side beam assembly 40 to form an enclosed accommodating space 41a.

[0121] In some embodiments of the present application, the sealing connection between the seal 50 and the side beam assembly 40 can be any method. In some embodiments, the seal 50 can be welded to the side beam assembly 40. In some embodiments, as shown in Figures 10 and 11, a third connection hole 411h can be provided on the side beam structure 41, and the third connection hole 411h can be used for bolt connection with the seal 50. For example, the third connection hole 411h is provided on the first wall portion 411a and / or the second wall portion 412a of the side beam structure 41. For example, the third connection hole 411h is provided on the first wall portion 411a that encloses the first sub-cavity 411c and / or the second wall portion 412a that encloses the third sub-cavity 412c of the side beam structure 41. In some embodiments, when the first side beam 411 is provided with a protrusion 411g protruding toward one side of the accommodating space 41a at the end near the first connecting portion 411e, a third connecting hole 411h may be provided on the protrusion 411g to achieve connection between the protrusion 411g and the sealing member 50.

[0122] In some embodiments, the chassis may further include the battery 10 described in any of the above embodiments. The battery 10 is disposed within the accommodation space 41a and is used to provide electrical energy to the vehicle 1. In some embodiments, the sealing member 50 located closer to the passenger compartment of the vehicle 1 in the first direction X may be a first housing portion 301 for enclosing the floor of the passenger compartment or the battery 10. In some embodiments, the sealing member 50 located farther from the passenger compartment of the vehicle 1 in the first direction X may be a second housing portion 302 of the battery 10.

[0123] In the technical solutions of some embodiments of the present application, the side beam assembly 40 connected to the body 13 of the vehicle 1 can not only play a bearing role for the body 13 of the vehicle 1, but also can be enclosed with the seal 50 to form a relatively closed accommodating space 41a. The closed accommodating space 41a can be used to accommodate the battery cell 21 to reduce the influence of external water or water vapor on the battery cell 21, and the side beam assembly 40 can also be used to withstand at least part of the impact applied to the vehicle 1, so that the chassis can provide better protection for the battery cell 21.

[0124] In some embodiments, a sealant is applied to the connection between the sealing member 50 and the side beam assembly 40 .

[0125] By providing sealant at the connection between the sealing member 50 and the side beam assembly 40 , the airtightness of the accommodating space 41 a is further improved.

[0126] According to some embodiments of the present application, a vehicle is provided, comprising the chassis described in any one of the above schemes.

[0127] Referring to Figures 4 to 11 , some embodiments of the present application provide a side beam assembly 40 for use in a vehicle 1. The side beam assembly 40 includes a plurality of side beam structures 41. The plurality of side beam structures 41 are sealed and connected to each other to enclose a receiving space 41a. The receiving space 41a is used to accommodate a battery cell 21. The plurality of side beam structures 41 include two first side beams 411 spaced apart along a second direction Y. The first side beam 411 includes a first wall portion 411a and a first cavity 411b enclosed by the first wall portion 411a. A partition wall 41b is disposed within at least a portion of the first cavity 411b. The partition wall 41b is used to separate the first cavity 411b into a first sub-cavity 411c and a second sub-cavity 411d. The first sub-cavity 411c and / or the second sub-cavity 411d are formed to extend along a third direction Z. The first sub-cavity 411c is located on at least a portion of the second sub-cavity 411d on a side closer to the accommodation space 41a; and / or, the first sub-cavity 411c is located on at least one side of at least a portion of the second sub-cavity 411d in the first direction X. The side rail assembly 40 further includes a sealing portion 413, which is connected to the first wall portion 411a and the partition wall 41b at both ends of the second sub-cavity 411d in the third direction Z. The sealing portion 413, at least a portion of the partition wall 41b, and at least a portion of the first wall portion 411a enclose a sealed first sub-cavity 411c. A first connecting portion 411e is provided on at least one side of the first side rail 411 in the first direction X and / or on a side farther from the accommodation space 41a in the second direction Y, so that the first side rail 411 can be connected to the vehicle body 13 via the first connecting portion 411e. The end of the first side beam 411 near the first connecting portion 411e is provided with a protrusion 411g protruding toward one side of the accommodating space 41a. The protrusion 411g is used to connect with the sealing member 50. The multiple side beam structure 41 also includes two second side beams 412 spaced apart along the third direction Z. The two second side beams 412 are located between two adjacent first side beams 411. At least one second side beam 412 includes a second wall portion 412a and a second cavity 412b enclosed by the second wall portion 412a. The second cavity 412b is formed and extends along the second direction Y. The second side beam 412 having the second cavity 412b is sealedly connected to the first wall portions 411a of the two first side beams 411 at both ends in the second direction Y.

[0128] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A side beam assembly for a vehicle, the side beam assembly comprising a plurality of side beam structures, the plurality of side beam structures being sealed and connected to each other to enclose a receiving space, the receiving space being used to receive a battery cell, in, At least one of the side beam structures is used to be connected to the body of the vehicle.

2. According to the side beam assembly according to claim 1, at least one of the side beam structures includes a first wall portion and a first cavity enclosed by the first wall portion, and a partition wall is arranged in at least a portion of the first cavity, the partition wall is used to separate the first cavity into a first sub-cavity and a second sub-cavity, and the partition wall and at least a portion of the first wall portion are sealed and connected to each other to seal the first sub-cavity, and the first wall portion enclosing the first sub-cavity is used to be connected to the sealing part of the vehicle.

3. The side beam assembly according to claim 2, wherein the first sub-cavity is located on a side of at least part of the second sub-cavity close to the accommodating space; And / or, the first sub-cavity is located on at least one side of at least part of the second sub-cavity in the first direction.

4. The side beam assembly according to any one of claims 2 or 3, wherein the plurality of side beam structures include two first side beams spaced apart along the second direction, at least one of the first side beams includes the first sub-cavity and the second sub-cavity, and the first sub-cavity and / or the second sub-cavity are extended and formed along the third direction, in, The first direction, the second direction and the third direction intersect each other.

5. The side beam assembly according to claim 4 further comprises a sealing portion, wherein the sealing portion is connected to the first wall portion and the partition wall at both ends of the second sub-cavity in the third direction, and the sealing portion, at least a portion of the partition wall and at least a portion of the first wall portion enclose the first sub-cavity to form a closed body.

6. The side beam assembly according to any one of claims 4 or 5, wherein the plurality of side beam structures further include two second side beams spaced apart along the third direction, and the two second side beams are located between two adjacent first side beams, and at least one of the second side beams includes a second wall portion and a second cavity formed by the second wall portion, and the second cavity is formed by extending along the second direction. in, Two ends of the second side beam having the second cavity in the second direction are respectively sealed and connected to the first wall portions of the two first side beams.

7. According to the side beam assembly according to any one of claims 4 to 6, a first connecting portion is provided on at least one side of the first side beam in the first direction and / or on a side away from the accommodating space in the second direction, so that the first side beam can be connected to the vehicle body through the first connecting portion.

8. The side beam assembly according to claim 7, wherein an end portion of the first side beam close to the first connecting portion is provided with a protrusion protruding toward one side of the accommodating space, and the protrusion is used to be connected to the sealing member.

9. A chassis for a vehicle, the chassis comprising: The side beam assembly according to any one of claims 1 to 8; The sealing member is sealingly connected to two sides of the side beam assembly in the first direction and is enclosed with the side beam assembly to form the closed accommodating space.

10. The chassis according to claim 10, wherein a sealant is coated at a connection between the sealing member and the side beam assembly.

11. A vehicle comprising a chassis according to any one of claims 9 to 10.

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