WO2024221166A1 - Side beam assembly, chassis, and vehicle - Google Patents

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) that are sealingly connected to each other to define an accommodating space (41a), and the accommodating space (41a) is used for accommodating battery cells (21), wherein at least one side beam structure (41) is configured to be connected to a vehicle body (13) of the vehicle (1).

Description

Side beam assembly, chassis and vehicle Technical Field

The present application relates to a side beam assembly, a chassis and a vehicle.

Background Art

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.

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

Summary of the invention

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.

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 a body of the vehicle.

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 bear the load on the vehicle body. In addition, by sealing and connecting a 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 to affect the battery cells, and the side beam assembly can also be used to bear The side beam assembly can provide better protection for the battery cells by at least partially applying an impact to the vehicle.

In some embodiments, at least one side beam structure includes a first wall portion and a first cavity formed by the first wall portion, and a partition wall is provided in at least part 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 part of the first wall portion are sealed to each other to seal the first sub-cavity, and the first wall portion enclosed to form the first sub-cavity is used to connect with a sealing member of the vehicle. By providing a 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 and can be used to connect with the body of the vehicle or to arrange at least part of the wiring harness or pipeline of the vehicle, so as to improve the compactness of the internal structure of the vehicle. Furthermore, the first sub-cavity can be relatively closed, so that water or water vapor in the external environment is not easy to enter into the first sub-cavity. Therefore, when the first wall portion enclosing 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 into the accommodation 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 enhance the protective effect of the side beam assembly on the battery cell.

In some embodiments, the first sub-cavity is located on a side of at least part of the second sub-cavity close to the accommodation 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. By arranging the first sub-cavity to be located on a side of at least part of the second sub-cavity close to the accommodation space, and/or, by arranging the first sub-cavity to be located on at least one side of at least part of the second sub-cavity in the first direction, the first sub-cavity can be located on the outer side of the second sub-cavity, so as to facilitate the connection between the sealing element of the vehicle and the first wall portion enclosing the first sub-cavity.

In some embodiments, the plurality of side beam structures include two first side beams spaced apart along a 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 arranging the first sub-cavity to be extended and formed along the third direction, that is, arranging at least a portion 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 that can be connected to the seal, thereby improving the connection reliability between the side beam structure and the seal, and the first sub-cavity that is extended and formed only in one direction is also easy to process and manufacture; and/or, by arranging the second sub-cavity to be extended and formed along the third direction, the first wall portion of the first sub-cavity in the vehicle can be connected to the seal. The wiring harness or pipeline that needs to be arranged in the third direction can be better arranged in the second sub-cavity.

In some embodiments, the side beam assembly further includes a sealing portion, 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 to form a sealed first sub-cavity. By providing the sealing portion to seal the end of the first sub-cavity in the third direction, it is difficult for external water or water vapor to enter the first sub-cavity.

In some embodiments, 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, at least one second side beam 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, wherein the two ends of the second side beam with the second cavity in the second direction are respectively sealed and connected with the first wall portions of the two first side beams. By setting the two ends of the second side beam with the second cavity in the second direction to be respectively sealed and connected with the first wall portions of the two first side beams, the second wall portion and at least part of the first wall portion can be enclosed to form a relatively closed second cavity, so that water or water vapor in the external environment is not easy to enter into the second cavity, so that when the second wall portion is connected to the sealing member of the vehicle, the environment of the second cavity at the connection between the second wall portion and the sealing member is relatively dry, so that water or water vapor is not easy to enter the accommodation space through the connection between the second wall portion and the sealing member to affect the normal operation of the battery cell, thereby improving the protective effect of the side beam assembly on the battery cell.

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 away from the accommodation 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 in the second direction away from the accommodation space, the first side beam can bear the load of 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.

In some embodiments, a protrusion protruding toward one side of the accommodating space is provided at the end of the first side beam close to the first connecting portion, and the protrusion is used to connect with the sealing member. By providing a protrusion protruding toward one side of the accommodating space at the end of the first side beam close to the first connecting portion, a relatively sufficient connection area is provided between the sealing member of the vehicle and the first side beam, so as to improve the connection effect between the side beam assembly and the sealing member.

In a 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 sealingly connected to both sides of the side beam assembly in a first direction, and enclosing the side beam assembly to form an enclosed accommodating space.

In the technical solutions of some embodiments of the present application, the side beam assembly connected to the vehicle body can not only bear the weight of the vehicle body, but also 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.

In some embodiments, the connection between the sealing member and the side beam assembly is coated with a sealant. By providing the sealant at the connection between the sealing member and the side beam assembly, the airtightness of the accommodation space can be further improved.

In a third aspect, some embodiments of the present application provide a vehicle, the vehicle comprising the chassis of any one of the aforementioned items.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. 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 paying creative work.

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

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

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

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

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;

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;

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 in some other embodiments of the present application;

FIG8 is a schematic structural diagram of a side beam assembly in some embodiments of the present application;

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 in some embodiments of the present application;

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 other embodiments of the present application;

FIG. 11 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.

In the drawings, the drawings are not drawn to scale.

The figures are as follows:

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

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

Box body 30; first box body part 301; second box body part 302;

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;

Seal 50;

First direction X;

The second direction Y;

The third direction Z.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, ordinary technicians in this field can All other obtained embodiments fall within the scope of protection of this application.

Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. 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 and secondary relationship.

Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

The term "and/or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.

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

The term "plurality" used in the present application refers to two or more (including two).

At present, judging from the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also It is widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

Batteries are used more and more widely in various fields, and many vehicles equipped with battery cells have also appeared. For example, vehicles that use electric energy 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 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 to affect the normal operation of the battery cells and reduce the working reliability of the battery cells.

In order to improve the protection capability of the side beam structure for the battery cells, a side beam assembly may be provided to prevent external water or water vapor from affecting the battery cells of the vehicle. Specifically, the side beam assembly may include multiple side beam structures, and the multiple side beam structures are sealed and connected end to end to enclose and form a receiving space, and the receiving space may be used to receive the battery cells.

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 with the vehicle body, so that the side beam assembly can bear the load on the vehicle body. In addition, by sealing and connecting multiple side beam structures end to end to enclose and 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 with other sealing parts of the vehicle, so that the storage space can be relatively closed, so that external water or water vapor is not easy to enter the storage space to affect the operation of the battery cells, so that the side beam assembly can provide better protection for the battery cells.

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 may be suitable for protecting and accommodating any battery cell, or the side beam assembly may 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 may 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 may be suitable for 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.; battery cells are used to provide electrical energy for the above-mentioned electrical equipment.

The chassis provided in the embodiment of the present application can be used for any vehicle that needs to carry battery cells. The vehicle provided in the embodiment of the present application can be any fuel vehicle, gas vehicle or new energy vehicle that needs to carry battery cells. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.

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 examples.

Please refer to Figure 1, which is a schematic diagram of the structure 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 arranged inside the vehicle 1, and the battery 10 can be arranged 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 be used as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 11 and a motor 12. The controller 11 is used to control the battery 10 to power the motor 12, for example, for the starting, navigation and driving power requirements of the vehicle 1.

In some embodiments of the present application, the battery 10 can be used 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 .

Please refer to Figure 2, which shows a schematic diagram of the exploded structure of a 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 a battery module 20 or a 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 the present 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.

As shown in FIG. 2 , in some embodiments, the battery 10 may include a housing 30 and a battery cell 21 , wherein the battery cell 21 is accommodated in the housing 30 .

The box 30 can be a simple three-dimensional structure such as a single cuboid or a cylinder or a sphere. The material of the box 30 can be an alloy material such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, or a composite material such as glass fiber plus epoxy resin, which is not limited in the embodiment of the present application.

The box 30 is used to accommodate the battery cell 21, and the box 30 can be a variety of structures. In some embodiments, the box 30 may include a first box portion 301 and a second box portion 302, the first box portion 301 and the second box portion 302 cover each other, and the first box portion 301 and the second box portion 302 jointly define a storage space for accommodating the battery cell 21. The second box portion 302 may be a hollow structure with one end open, the first box portion 301 is a plate-like structure, and the first box portion 301 covers the open side of the second box portion 302 to form a box 30 with a storage space; the first box portion 301 and the second box portion 302 may also be a hollow structure with one side open, and the open side of the first box portion 301 covers the open side of the second box portion 302 to form a box 30 with a storage space. Of course, the first box portion 301 and the second box portion 302 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

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 .

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 referred to as an upper box cover, and the second box body portion 302 can also be referred to as a lower box cover.

In the battery 10, there can be one or more battery cells 21. If there are more than one battery cell 21, the battery cells 21 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the battery cells 21 are connected in series and in parallel. The battery cells 21 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the battery cells 21 can be accommodated in the box 30; of course, the battery modules 20 can also be formed by connecting the battery cells 21 in series, in parallel, or in a mixed connection, and then the battery modules 20 can be connected in series, in parallel, or in a mixed connection to form a whole, and then accommodated in the box 30.

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 present application embodiment does not limit this. The battery cell 21 may be cylindrical, flat, rectangular, or in other shapes, etc., and the present application embodiment does not limit 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 the soft-pack battery cell 21, which is not limited in the present embodiment. However, for the sake of simplicity, the following embodiments are all described by taking the square-shaped battery cell 21 as an example.

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 constituting a battery. As shown in FIG3 , the battery cell 21 includes an end cap 211 , a housing 212 and an electrode assembly 213 .

The end cap 211 refers to a component that covers the opening of the shell 212 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the end cap 211 can be adapted to the shape of the shell 212 to match the shell 212. Optionally, the end cap 211 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 211 is not easily deformed when squeezed and collided, so that the battery cell 21 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 211a can be provided on the end cap 211. The electrode terminal 211a can be used to electrically connect to the electrode assembly 213 for outputting or inputting electrical energy of the battery cell 21. In some embodiments, the end cap 211 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. The material of the end cap 211 can also be a variety of 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. In some embodiments, an insulating member may be provided inside the end cap 211, and the insulating member may be used to isolate the first electrical connection member in the housing 212 from the end cap 211 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

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, and 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, and when it is necessary to encapsulate the interior of the shell 212, the end cap 211 covers 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 a variety of 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.

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

Figure 4 is a schematic diagram of the structure of a side beam assembly 40 accommodating a battery cell 21 in some embodiments of the present application, and Figure 5 is a schematic diagram of the connection structure between the side beam assembly 40 and the seal 50 in some embodiments of the present application, in which 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.

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 a plurality of side beam structures 41, and the plurality of side beam structures 41 are sealed and connected to each other to enclose a receiving space 41a, and the receiving space 41a is used to receive a battery cell 21, wherein at least one side beam structure 41 is used to be connected to a body 13 of the vehicle 1.

As shown in FIG4 , in some embodiments, the accommodation space 41a can be used to directly accommodate the battery cell 21, so that the side beam assembly 40 can directly provide protection for the battery cell 21. In some embodiments, the accommodation 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 mixed connection. Mixed connection refers to a mixture of series and parallel connection to improve the accommodation efficiency of the accommodation space 41a. In other embodiments, the accommodation space 41a can also be used to accommodate the battery 10 in any of the above embodiments that includes multiple battery cells 21 as described in any of the above schemes. For example, the accommodation space 41a can be used to accommodate the battery 10 including the box 30.

In the side beam assembly 40 provided in some embodiments of the present application, the sealing connection between the side beam structures 41 can be any one. In some embodiments, the side beam structures 41 can be sealed by welding. In some embodiments, the welding parts of the side beam structures 41 can also be polished to improve the sealing connection effect between the side beam structures 41 and the flatness of the sealing connection parts.

In some embodiments of the present application, the side beam structure 41 may be made of a material The side beam structure 41 can be made of 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 a certain strength and is easy to process.

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.

As shown in FIG. 4 to FIG. 6 , in the technical solutions of some embodiments of the present application, the side beam assembly 40 includes a plurality of side beam structures 41. By providing at least one side beam structure 41 for connecting with the vehicle body 13 of the vehicle 1, the side beam assembly 40 can bear the load on the vehicle body 13 of the vehicle 1. In addition, by sealingly connecting the plurality of side beam structures 41 to each other to enclose and form a receiving space 41a, the receiving space 41a can be used to receive the battery cell 21 of the vehicle 1, so that the side beam structure 41 can reduce the impact of external impact on the battery cell 21, and the side beam assembly 40 can also be connected with other sealing members 50 of the vehicle 1, so that the receiving space 41a can be relatively closed, so that water or water vapor outside the receiving space 41a is not easy to enter the receiving space 41a to affect 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 side beam assembly 40 can provide better protection for the battery cell 21.

In some embodiments, a storage space 41a formed by multiple side beam structures 41 has a relative first opening 40a and a second opening 40b in the first direction X. The two sides of the side beam assembly 40 in the first direction X can be sealed and connected to the seal 50 of the vehicle 1 to seal the first opening 40a and the second opening 40b, so that the storage space 41a can be relatively closed.

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 enclosed by the first wall portion 411a, and a partition wall 41b is arranged 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 and connected 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.

In some embodiments, the material of the partition wall 41b and the first wall portion 411a may 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 may be integrally formed to reduce the difficulty of manufacturing the side beam structure 41.

The partition wall 41b is provided to separate the first cavity 411b into the second sub-cavity 411d and the sealed first sub-cavity 411c, so that the second sub-cavity 411d can communicate with the outside and can be used for communication with the outside. The body 13 of the vehicle 1 is connected to or used for arranging at least part of the wiring harness or pipeline of the vehicle 1, so as to improve the compactness of the internal structure of the vehicle 1. In addition, the first sub-cavity 411c can be relatively closed, so that water or water vapor in the external environment is not easy to enter the first sub-cavity 411c, so that when the first wall portion 411a enclosing the first sub-cavity 411c is connected with the seal 50 of the vehicle 1, the environment of the first sub-cavity 411c at the connection between the first wall portion 411a 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 first wall portion 411a and the seal 50 to affect the normal operation of the battery cell 21, so as to further improve the protection of the side beam assembly 40 on the battery cell 21.

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 set in various ways. In some embodiments, there can be multiple connection points between the partition wall 41b and the first wall portion 411a, 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 only set at the position where the first wall portion 411a needs to be connected to the seal 50 of the vehicle 1.

FIG. 7 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.

In some embodiments, as shown in FIG. 6 , the first sub-cavity 411c is located on a side of at least a portion of the second sub-cavity 411d close to the accommodating space 41a; and/or, as shown in FIG. 7 , 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.

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 enclosing the first sub-cavity 411c.

The shape of the first sub-cavity 411c in the embodiment of the present application can be any one, and the shape of the first sub-cavity 411c can be set according to the connection method between the sealing member 50 and the first wall portion 411a and the shape of the connecting member. In some embodiments, the first sub-cavity 411c can be formed by only the partition wall 41b and at least part of the first wall portion 411a. By reasonably setting the enclosed shape of the partition wall 41b and at least part of the first wall portion 411a, the shape of the first sub-cavity 411c can be relatively small. For flexible settings.

FIG. 8 is a schematic structural diagram of a side beam assembly 40 according to some embodiments of the present application.

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.

In some embodiments, the third direction Z may be the direction in which the vehicle 1 moves in a straight line, and the first side beam 411 may be used to act as a 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 .

By setting the first sub-cavity 411c to extend along the third direction Z, that is, setting at least a portion of the partition wall 41b to extend 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 that is extended along only one direction is also convenient for processing and manufacturing; and/or, by setting the second sub-cavity 411d to extend 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.

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 set according to the structural arrangement of the vehicle body 13 of the vehicle 1 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 extension directions of the two first side beams 411 spaced apart along the second direction Y can be arranged at a certain preset angle.

In some embodiments, the first side beam 411 is extended along the third direction Z, and the specific extension size of the first side beam 411 in the third direction Z can be set according to the structural arrangement of the vehicle 1. In some embodiments, the extension sizes of two first side beams 411 spaced apart along the second direction Y in the third direction Z can be the same.

In some embodiments, the second sub-cavity 411d may not need to be specially sealed, and at least a portion of the first wall portion 411a enclosed to form the second sub-cavity 411d may be used to connect to the vehicle body 13. In some embodiments, as shown in FIG. 8 , at least a portion of the first wall portion 411a enclosed to form the second sub-cavity 411d may be used to connect to the vehicle body 13. The portion 411a may be provided with a connecting opening 40c connecting the second sub-cavity 411d with the outside, 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, so as to facilitate the arrangement of the wiring harness or pipeline of the vehicle 1.

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.

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 a portion of the partition wall 41b and at least a portion of the first wall portion 411a enclose a closed first sub-cavity 411c.

In some embodiments, the material of the sealing portion 413 and the material of the first wall portion 411a can be the same, so as 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 with the first wall portion 411a or the partition wall 41b to reduce the manufacturing difficulty of the side beam structure 41.

In some embodiments, the specific shape of the sealing portion 413 can be set according to the shape of the opening formed by at least part 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 setting of the sealing portion 413.

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

FIG. 9 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.

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 second side beam 412 with the second cavity 412b is sealed and connected to the first wall portions 411a of the two first side beams 411 at both ends in the second direction Y.

By arranging the second side beam 412 with the second cavity 412b, the two ends in the second direction Y are respectively sealed and connected to the first wall portions 411a of the two first side beams 411, so that 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 to affect the normal operation of the battery cell 21, thereby improving the protection of the side beam assembly 40 on the battery cell 21.

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 set according to the structural arrangement of the vehicle body 13 of the vehicle 1 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 extension directions of the two second side beams 412 spaced apart along the third direction Z can be arranged at a certain preset angle.

In some embodiments, the second side beam 412 is extended and formed along the second direction Y, and the specific extension dimension of the second side beam 412 in the second direction Y can be set according to the structural arrangement 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.

As shown in FIG. 9 , in some embodiments, a partition wall 41b may also be provided in at least a portion of the second cavity 412b, and 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 a portion of the second wall portion 412a are sealed and connected to each other to seal the third sub-cavity 412c, and the second wall portion 412a enclosing the third sub-cavity 412c is used to be connected to the seal 50 of the vehicle 1.

As shown in FIG8 and FIG9, in some embodiments, the fourth sub-cavity 412d may not need to be specially sealed. In some embodiments, at least a portion of the second wall portion 412a enclosing the fourth sub-cavity 412d may also be provided with a connecting opening 40c connecting the fourth sub-cavity 412d with the outside, so that at least a portion of the wiring harness or pipeline of the vehicle 1 can enter the fourth sub-cavity 412d through the connecting opening 40c, so as to facilitate the arrangement of the wiring harness or pipeline of the vehicle 1.

The partition wall 41b is provided to separate the second cavity 412b into the fourth sub-cavity 412d and the sealed third sub-cavity 412c, so that the fourth sub-cavity 412d can communicate with the outside and can be used for At least part of the wiring harness or pipeline of the vehicle 1 is arranged to improve the compactness of the internal structure of the vehicle 1. In addition, the third sub-cavity 412c can be relatively closed, so that water or water vapor in the external environment is not easy to enter the third sub-cavity 412c, so that when the second wall portion 412a enclosing the third sub-cavity 412c is connected to the seal 50 of the vehicle 1, the environment of the third sub-cavity 412c 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 to affect the normal operation of the battery cell 21, so as to further improve the protection of the side beam assembly 40 on the battery cell 21.

As shown in FIG8 and FIG9, 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, so as to facilitate the arrangement of the wiring harness or pipeline of the vehicle 1. In some embodiments, the specific shape and specific position of the third sub-cavity 412c and the fourth sub-cavity 412d may be provided with reference to the arrangement ideas of the first sub-cavity 411c and the second sub-cavity 411d, for example, the third sub-cavity 412c is located on the side of at least part of the fourth sub-cavity 412d close to the accommodation space 41a; and/or, the third sub-cavity 412c is located on at least one side of at least part 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 extended and formed along the second direction Y, etc., which will not be described in detail here.

FIG. 10 is a schematic cross-sectional view of a partial connection between a side beam assembly 40 , a seal 50 and a vehicle body 13 in a third direction Z according to some other embodiments of the present application.

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.

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 to improve the connection stability between the first side beam 411 and the body 13.

In some embodiments, the extension direction of the first connection portion 411e may be the same as the extension direction of the first side beam 411. In some embodiments, the first connection portion 411e may be extended along the third direction Z, and the extension dimension of the first connection 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.

In some embodiments of the present application, the first connection portion 411e may be connected to the vehicle body 13 in any manner. In some embodiments, the first connection portion 411e may be welded to the vehicle body 13. In other embodiments, as shown in FIG. 10 , the first connection portion 411e may be provided with a first connection hole 411f, so that the first connection portion 411e and the vehicle body 13 may be connected through the first connection hole 411f.

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 for 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.

FIG. 11 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.

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.

In some embodiments, the second connection 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 connection portion 412e can have a larger area that can be connected to the body 13 of the vehicle 1 to improve the connection stability between the second side beam 412 and the body 13.

In some embodiments, the extension direction of the second connection portion 412e may be the same as the extension direction of the second side beam 412. In some embodiments, the second connection portion 412e may be extended along the second direction Y, and the extension dimension of the second connection 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.

In some embodiments of the present application, the second connection portion 412e can be connected to the vehicle body 13 in any manner. In some embodiments, the second connection portion 412e can be welded to the vehicle body 13. In other embodiments, as shown in FIG. 11 , the second connection portion 412e includes a second connection hole 412f, so that the second connection portion 412e and the vehicle body 13 can be connected through the second connection 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 connection portion 412e may be disposed on the second wall portion 412a enclosing the fourth sub-cavity 412d.

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 .

In some embodiments, the shape of the protrusion 411g can be any one. In some embodiments, the extension direction of the protrusion 411g can be the same as the extension direction of the first side beam 411. In some embodiments, the protrusion 411g can be extended 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 beam 411 in the third direction Z.

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 sufficient connection area is provided between the seal 50 of the vehicle 1 and the first side beam 411, so as to improve the connection effect between the side beam assembly 40 and the seal 50.

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

In some embodiments of the present application, the sealing connection between the seal 50 and the side beam assembly 40 can be any one. In some embodiments, the seal 50 can be welded to the side beam assembly 40. In some embodiments, as shown in FIG. 10 and FIG. 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 in the side beam structure 41. For example, the third connection hole 411h is provided on the first wall portion 411a enclosing the first sub-cavity 411c and/or the second wall portion 412a enclosing the third sub-cavity 412c in the side beam structure 41. In some embodiments, when a protrusion 411g protruding toward one side of the accommodating space 41a is provided at the end of the first side beam 411 close to 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 seal 50.

In some embodiments, the chassis may further include the battery 10 described in any of the above solutions, and the battery 10 is disposed in the accommodation space 41a and is used to provide electrical energy to the vehicle 1. In some embodiments, the sealing member 50 on the side close to the passenger compartment of the vehicle 1 in the first direction X may be used to enclose The floor of the passenger compartment or the first box portion 301 of the battery 10 is formed. In some embodiments, the sealing member 50 on the side away from the passenger compartment of the vehicle 1 in the first direction X may be the second box portion 302 of the battery 10 .

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 bear the weight of the body 13 of the vehicle 1, but also be enclosed with the seal 50 to form a relatively closed accommodation space 41a. The closed accommodation 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.

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

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 can be further improved.

According to some embodiments of the present application, a vehicle is provided, and the vehicle includes the chassis described in any of the above schemes.

Please refer to FIG. 4 to FIG. 11 , according to some embodiments of the present application, some embodiments of the present application provide a side beam assembly 40, the side beam assembly 40 is used for a vehicle 1, and the side beam assembly 40 includes a plurality of side beam structures 41, and the plurality of side beam structures 41 are sealed and connected to each other to enclose a receiving space 41a, and the receiving space 41a is used to receive a battery cell 21. The plurality of side beam structures 41 include two first side beams 411 spaced apart along the 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, at least a portion of the first cavity 411b is provided with a partition wall 41b, and 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 first sub-cavity 411c and/or the second sub-cavity 411d are formed by extending along the third direction Z. The first sub-cavity 411c is located on at least one side of the second sub-cavity 411d close to the accommodating space 41a; and/or, the first sub-cavity 411c is located on at least one side of at least one side of the second sub-cavity 411d in the first direction X. The side beam assembly 40 further includes a sealing portion 413, which is connected to the first wall portions 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 the first sub-cavity 411c. Or a first connection portion 411e is provided on a side away from the accommodation 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 connection portion 411e. The end of the first side beam 411 close to the first connection portion 411e is provided with a protrusion 411g protruding toward one side of the accommodation space 41a, and the protrusion 411g is used to connect with the sealing member 50. 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, 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, and the second cavity 412b is extended and formed along the second direction Y, wherein the two ends of the second side beam 412 having 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.

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

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 replace some of the technical features therein by equivalents, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 (11)

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, Wherein, at least one of the side beam structures is used to be connected to the body of the vehicle. 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 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 a sealing component of the vehicle. According to the side beam assembly of claim 2, 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. According to the side beam assembly according to any one of claims 2 or 3, 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, The first direction, the second direction and the third direction intersect each other. According to the side beam assembly according to claim 4, the side beam assembly also includes a sealing portion, which 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. According to the side beam assembly according to any one of claims 4 or 5, 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, 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 extended and formed along the second direction, Wherein, 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. 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. According to the side beam assembly according to claim 7, a protrusion protruding toward one side of the accommodating space is provided at the end of the first side beam close to the first connecting portion, and the protrusion is used to be connected to the sealing member. A chassis for a vehicle, 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. According to the chassis of claim 10, a sealant is coated at a connection between the sealing member and the side beam assembly. A vehicle comprising the chassis according to any one of claims 9 to 10.