Chassis of vehicle, and vehicle

Abstract

A chassis (400) of a vehicle, and a vehicle (700). The chassis (400) comprises an energy compartment (100). The energy compartment (100) comprises first beams (10), and the plurality of first beams (10) are connected to each other to define the energy compartment (100). The energy compartment (100) is configured to accommodate battery cells. At least one of the first beams (10) comprises an outer beam (11) and an inner beam (12) sleeved within the outer beam (11). One of the inner beam (12) and the outer beam (11) is configured as a profile member, and the other one of the inner beam (12) and the outer beam (11) is configured as a roll-formed member.

Description

The vehicle's chassis and vehicle

[0001]

[0002] Cross-reference of related applications

[0003] This application claims priority to CATL (Shanghai) Intelligent Technology Co., Ltd., filed on January 24, 2025, entitled "Chassis of a Vehicle and Vehicle", Chinese Patent Application No. "202510122319.X". Technical Field

[0004] This application relates to the field of vehicle technology, and in particular to a vehicle chassis and vehicle. Background Technology

[0005] In related technologies, for electric vehicles, the installation of battery devices results in a greater overall vehicle weight, and the connection structure between the battery device and the vehicle body has low strength, making it difficult to meet the collision safety strength requirements and posing a safety hazard.

[0006] Application content

[0007] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a vehicle chassis with higher structural strength and enhanced safety.

[0008] This application also proposes a vehicle having the aforementioned chassis.

[0009] This application provides an energy chamber, including: a first beam, wherein there are multiple first beams connected to define the energy chamber, the energy chamber being used to accommodate a single battery cell; wherein at least one of the first beams includes: an outer beam and an inner beam sleeved within the outer beam, one of the inner beam and the outer beam being constructed as a profile, and the other of the inner beam and the outer beam being constructed as a roll-formed part.

[0010] According to the embodiments of this application, by constructing at least one first beam of the energy cabin as a composite structure of inner and outer beams, the ability of the first beam to resist compression and deformation can be improved, thereby increasing the structural strength and stiffness of the energy cabin and reducing the probability of deformation of the first beam intruding into the interior of the energy cabin, thus improving the safety and reliability of the energy cabin.

[0011] According to some embodiments of this application, each of the multiple first beams includes an outer beam and an inner beam fitted inside the outer beam, and the outer beams of the multiple first beams are made of the same material.

[0012] According to some embodiments of this application, the outer beam includes two first plates disposed opposite each other in a first direction and two second plates disposed opposite each other in a second direction. The two first plates and the two second plates enclose a cavity and are fitted inside the cavity. The first direction and the second direction have an included angle.

[0013] According to some embodiments of this application, the inner beam is constructed as a roll-formed part, and the outer beam is constructed as a profile part.

[0014] According to some embodiments of this application, the inner beam includes: a plurality of continuous bent plate segments, with an included angle between two adjacent bent plate segments, and at least one bent plate segment is disposed opposite to a first plate and at least one bent plate segment is disposed opposite to a second plate.

[0015] According to some embodiments of this application, multiple bent plate segments divide the cavity into multiple cavities.

[0016] According to some embodiments of this application, the bending plate segment includes: a starting plate segment, a plurality of intermediate plate segments and a tail plate segment arranged sequentially, wherein the starting plate segment and the tail plate segment are attached and connected, and / or the starting plate segment is attached and connected to at least one intermediate plate segment.

[0017] According to some embodiments of this application, the inner beam includes multiple sub-beams connected together and divided into multiple spaced-apart cavities.

[0018] According to some embodiments of this application, the cross-sectional profile of the sub-beam is one or more of the following: I-shaped, L-shaped, U-shaped, and Z-shaped.

[0019] According to some embodiments of this application, the inner beam is constructed as a profile and the outer beam is constructed as a roll-formed part.

[0020] According to some embodiments of this application, the inner beam includes an inner frame, which is disposed opposite to and fitted to at least one of the first plate and the second plate.

[0021] According to some embodiments of this application, at least one connecting plate is provided inside the inner frame. The connecting plate is used to define multiple cavities within the inner frame, and the connecting plate is connected to the inner frame.

[0022] According to some embodiments of this application, the first beam further includes a connector, through which the inner beam and the outer beam are connected.

[0023] This application provides a vehicle, including the chassis described in the above embodiments.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 is a schematic diagram of a vehicle according to an embodiment of this application;

[0027] Figure 2 is a schematic diagram of an energy cabin according to an embodiment of this application;

[0028] Figure 3 is a cross-sectional schematic diagram of the first beam according to an embodiment of this application;

[0029] Figure 4 is a schematic diagram of the first beam according to the first embodiment of this application;

[0030] Figure 5 is a schematic diagram of the first beam according to the second embodiment of this application;

[0031] Figure 6 is a schematic diagram of a first beam according to a third embodiment of this application;

[0032] Figure 7 is a schematic diagram of a second type of first beam according to a third embodiment of this application;

[0033] Figure 8 is a schematic diagram of the first beam in the third embodiment of this application. Embodiments of the present invention

[0034] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0037] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0038] To improve the integration of the vehicle body and increase the energy density of the battery devices installed on the vehicle, the battery devices can be integrated into the body or chassis through the CTB (Cell to Body) architecture or CTC (Cell to Chassis) architecture to improve energy density. That is, by integrating the energy compartment on the chassis and loading the battery cells through the energy compartment.

[0039] However, vehicles equipped with battery devices are heavier and suffer greater damage in impacts than traditional vehicles. Improving the safety of battery devices and even the entire vehicle has become an urgent technical problem to be solved.

[0040] In existing technologies, the beam structure enclosing the energy cabin is too low, making it difficult to meet collision safety requirements and posing a safety hazard.

[0041] Based on the above considerations, in order to improve energy density and integration, this application proposes an energy cabin, and further improves the structural strength of the first beam by setting a first beam on the energy cabin. The first beam is constructed as a composite beam structure with an outer beam and an inner beam, thereby improving the overall structural strength and stiffness of the energy cabin, and thus improving the safety and reliability of the vehicle.

[0042] Referring to Figure 1, which is a structural schematic diagram of a vehicle 700 provided in some embodiments of this application, the vehicle 700 can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc.

[0043] The vehicle body has a chassis 400, which sequentially includes a first compartment 200, an energy compartment 100, and a second compartment 300. Battery cells can be housed in the energy compartment 100. A motor 500, a controller 600, etc., can be housed in either the first compartment 200 or the second compartment 300. The battery cells in the energy compartment 100 can power the vehicle 700; for example, the battery can serve as the operating power source for the vehicle 700. The vehicle 700 may also include a controller 600 and a motor 500. The controller 600 controls the battery to power the motor 500, for example, to meet the power needs of the vehicle 700 during startup, navigation, and driving.

[0044] In some embodiments of this application, the battery can not only serve as the operating power source for the vehicle 700, but also as the driving power source for the vehicle 700, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 700.

[0045] Referring to Figure 2, which is a schematic diagram of an energy chamber 100 provided in some embodiments of this application, a first beam 10 defines a frame, the frame being formed as the energy chamber 100, and individual battery cells can be disposed inside the energy chamber 100.

[0046] Of course, a reinforcing beam structure can also be set inside the frame, and the internal space of the energy compartment 100 can be divided into multiple chambers, each of which is suitable for accommodating a single battery cell.

[0047] There can be multiple battery cells, which can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells are connected in both series and parallel configurations. Multiple battery cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of these battery cells is housed within a frame. Alternatively, the battery can consist of multiple battery cells first connected in series, parallel, or a combination thereof to form a battery module, and then these modules are connected in series, parallel, or a combination thereof to form a whole, which is then housed within the energy compartment 100. The battery may also include other structures; for example, it may include a busbar component for electrical connection between multiple battery cells.

[0048] Each battery cell can be a secondary battery cell or a primary battery cell; it can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited to these. The battery cell can be cylindrical, flat, cuboid, or other shapes.

[0049] A battery cell refers to the smallest unit that makes up a battery. A battery cell may include an end cap, a housing, electrode assemblies, and other functional components. An end cap is a component that closes onto the opening of the housing to isolate the internal environment of the battery cell from the external environment. The shape of the end cap may be adapted to the shape of the housing to fit the housing. Optionally, the end cap may be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap is not easily deformed under pressure or impact, giving the battery cell higher structural strength and improved safety performance. Functional components such as electrode terminals may be provided on the end cap. The electrode terminals can be used to electrically connect to the electrode assembly for outputting or inputting electrical energy into the battery cell. In some embodiments, the end cap may also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The end cap can also be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this.

[0050] In some embodiments, an insulating element may be provided on the inner side of the end cap. The insulating element can be used to isolate the electrical connectors within the housing from the end cap to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0051] The housing is a component used to fit with the end cap to form the internal environment of a battery cell. This internal environment can accommodate electrode components, electrolyte, and other parts. The housing and end cap can be independent components. An opening can be provided on the housing, and the end cap closes the opening to form the internal environment of the battery cell. Alternatively, the end cap and housing can be integrated. Specifically, the end cap and housing can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing, the end cap closes the housing. The housing can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing can be determined according to the specific shape and size of the electrode components. The housing can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application does not impose any special limitations on these materials.

[0052] Electrode assemblies are the components within a single battery cell where electrochemical reactions occur. The casing may contain one or more electrode assemblies. Electrode assemblies are primarily formed by winding or stacking positive and negative electrode plates, typically with a separator between them. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly, while the portions without active material each form a tab. The positive and negative tabs can be located together at one end of the main body or separately at both ends. During charging and discharging, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0053] The energy cabin 100, chassis 400, and vehicle 700 according to embodiments of this application are described below with reference to Figures 1-8.

[0054] As shown in Figures 2 and 3, this application provides an energy chamber 100, including: a first beam 10, there are multiple first beams 10, and the multiple first beams 10 are connected to define the energy chamber 100, such as: the first beams 10 are arranged opposite each other in pairs and connected at their ends, and the energy chamber 100 is used to accommodate battery cells.

[0055] The first beam 10 may include a first longitudinal beam extending along the travel direction of the vehicle 700 and a first transverse beam extending along the width direction of the vehicle 700. The left and right ends of the first transverse beam located at the front are respectively connected to the front ends of the two first longitudinal beams, and the left and right ends of the first transverse beam located at the rear are respectively connected to the rear ends of the two first longitudinal beams, so as to define a rectangular frame, and the interior of the frame is suitable for accommodating battery cells to form an energy compartment 100.

[0056] The battery cells can be housed in the energy compartment 100, rather than being assembled into a box that is then assembled into the vehicle body. This reduces the difficulty of layout and increases energy density.

[0057] However, in existing technologies where battery cells are assembled to the vehicle body via a housing, the structural strength of the housing can be improved through structural design to protect the battery cells. But for CTC or CTB architectures, the energy compartment 100 is part of the chassis 400. The chassis 400 and the vehicle body are assembled to define the complete vehicle body. The chassis 400 is decoupled from the vehicle body and is installed in a decoupled manner. The beam structure on the chassis 400 defines the energy compartment 100 where the battery cells are installed. There is no housing structure, so existing structural reinforcement solutions are difficult to adapt.

[0058] Based on this, the present application further includes at least one first beam 10 comprising: an outer beam 11 and an inner beam 12 fitted inside the outer beam 11, wherein one of the inner beam 12 and the outer beam 11 is constructed as a profile, and the other of the inner beam 12 and the outer beam 11 is constructed as a roll-formed part. At least one first beam 10 including an outer beam 11 and an inner beam 12 means that one, several or all of the plurality of first beams 10 surrounding the energy cabin 100 are constructed as a composite beam structure consisting of an outer beam 11 and an inner beam 12.

[0059] For example, the two first crossbeams opposite each other in the front-rear direction of the vehicle 700 and the two first longitudinal beams opposite each other in the left-right direction of the vehicle 700 are both constructed as a composite beam structure including an inner beam 12 and an outer beam 11. One of the inner beam 12 and the outer beam 11 is constructed as a profile and the other is constructed as a roll-formed part. It can be that the inner beam 12 is constructed as a profile and the outer beam 11 is constructed as a roll-formed part, or the inner beam 12 is constructed as a roll-formed part and the outer beam 11 is constructed as a profile.

[0060] This application constructs the first beam 10 as a composite beam structure with an inner beam 12 nested inside an outer beam 11. The inner beam 12 provides support to the outer beam 11 inside the outer beam 11, which can enhance the structural strength of the first beam 10 and improve the structural strength and stiffness of the energy chamber 100. One of the inner beam 12 and the outer beam 11 is constructed as a profile and the other is constructed as a roll-formed part, which can meet the requirements of complex surfaces. Based on the setting position, reasonable shape processing can be carried out. The profile part can also take into account the requirements of lightweighting, while the roll-formed part can improve processing efficiency and material utilization, thereby reducing material costs.

[0061] For example, if the first crossbeam is constructed as a composite structure including an inner beam 12 and an outer beam 11, it can improve the collision resistance of the front and / or rear sides of the energy cabin 100. If the first longitudinal beam is constructed as a composite structure including an inner beam 12 and an outer beam 11, it can improve the collision resistance of the left and right sides of the energy cabin 100. The first longitudinal beam can also be composited as a sill beam 101.

[0062] According to the embodiments of this application, the energy cabin 100 is constructed as a composite structure of an inner beam 12 and an outer beam 11 by at least one first beam 10 of the energy cabin 100. This can improve the ability of the first beam 10 to resist compression and deformation, thereby improving the structural strength and rigidity of the energy cabin 100 and reducing the probability of deformation of the first beam 10 intruding into the interior of the energy cabin 100. This can improve the safety and reliability of the energy cabin 100.

[0063] According to some embodiments of this application, each of the plurality of first beams 10 includes an outer beam 11 and an inner beam 12 sleeved within the outer beam 11, and the outer beams 11 of the plurality of first beams 10 are made of the same material.

[0064] The multiple first beams 10 all include outer beams 11 and inner beams 12, that is, the first horizontal beams and the first vertical beams are all constructed as composite beam structures. Thus, the structural strength can be enhanced on the front and rear sides and the left and right sides of the energy cabin 100 through the first beams 10, which can play the role of intercepting barrier intrusion and improve the structural strength and rigidity of the energy cabin 100.

[0065] The outer beams 11 of the multiple first beams 10 are made of the same material. For example, the outer beams 11 of the multiple first beams 10 are all constructed as profile parts, or the outer beams 11 of the multiple first beams 10 are all constructed as roll-formed parts, so that the outer beams 11 of the first cross beam and the first longitudinal beam are made of the same material, and the contact area between the two is made of the same material, which makes the assembly between the first cross beam and the first longitudinal beam easier, and can be directly welded and fixed. After welding and assembly, the connection strength and sealing performance between the first cross beam and the first longitudinal beam can be improved.

[0066] As shown in Figures 4-8, according to some embodiments of this application, the outer beam 11 includes two first plates 111 disposed opposite to each other in a first direction and two second plates 112 disposed opposite to each other in a second direction. The two first plates 111 and the two second plates 112 are connected to form a cavity, and the inner beam 12 is sleeved in the cavity. The first direction and the second direction have an angle.

[0067] The first direction and the second direction can be orthogonal so that the first plate 111 and the second plate 112 are perpendicular, or the first direction and the second direction can have an angle so that the first plate 111 and the second plate 112 form an obtuse angle or an acute angle to adapt to the shape requirements of different areas.

[0068] In one specific embodiment, the first direction is the height direction of the vehicle 700, and the second direction is based on the location of the first beam 10, which can be either the front-back direction or the left-right direction. For example, the two second plates 112 of the outer beam 11 of the first crossbeam are opposite each other in the front-back direction, while the two second plates 112 of the outer beam 11 of the first longitudinal beam are opposite each other in the left-right direction.

[0069] The first plate 111 is connected to the second plate 112 to form a cavity, which can be rectangular, trapezoidal, etc. The inner beam 12 is set in the cavity and can support the outer beam 11 in the cavity to improve the structural strength and stiffness of the first beam 10.

[0070] As shown in Figures 4 and 5, according to some embodiments of this application, the inner beam 12 is constructed as a roll-formed part, and the outer beam 11 is constructed as a profile part.

[0071] The outer beam 11 can be constructed as an extruded aluminum profile, while the inner beam 12 is constructed as high-strength roll-formed steel. The outer beams 11 of adjacent first beams 10 are all constructed as extruded aluminum profiles to make the connection strength between the first beams 10 higher. Welding with the same material results in better sealing. At the same time, the internal structure is supported by high-strength roll-formed steel, which can further improve the structural strength and rigidity of the energy chamber 100.

[0072] The inner beam 12 is constructed as a roll-formed part, and the inner beam 12 can be constructed as multiple continuous bent plate segments. Through multiple bends, the desired shape is obtained. The inner beam 12 can also be constructed as multiple sub-plate segments, which are further spliced ​​and welded to obtain the desired shape.

[0073] As shown in Figure 4, in the first embodiment of this application, the inner beam 12 includes: a plurality of continuous bent plate segments, with an included angle between two adjacent bent plate segments, and at least one bent plate segment is disposed opposite to the first plate 111 and at least one bent plate segment is disposed opposite to the second plate 112.

[0074] The cross-sectional shape of the inner beam 12 can be a grid shape, an eye shape, a sun shape, etc. It is formed by continuously bending multiple bent plate segments from a large plate to form a specific shape, which can improve processing efficiency and reduce processing difficulty. Among the multiple bent plate segments, at least one is opposite to the first plate 111 and at least one is against the second plate 112. When the first plate 111 or the second plate 112 is subjected to collision impact, it can be transferred to the inner beam 12 through the bent plate segment opposite to it. At least one bent plate segment is opposite to the first plate 111 and the second plate 112, which can improve the mechanical transmission effect of the impact load from the outer beam 11 to the inner beam 12, improve the uniformity of force distribution, improve the stress distribution, reduce the bending and torsional deformation of the first beam 10, improve the structural stiffness of the energy compartment 100, and improve the protection effect on the battery cells.

[0075] In the embodiment shown in Figure 4, according to some embodiments of this application, multiple bent plate segments divide the cavity into multiple cavities a.

[0076] The outer beam 11 defines a rectangular or trapezoidal cavity, while the inner beam 12 is set inside the outer beam 11 and can further divide the cavity into multiple cavities a. By setting multiple cavities a, the structural strength of the first beam 10 can be further improved, and the ability to resist barrier intrusion can be enhanced.

[0077] Furthermore, at least one cavity a can be constructed as a closed cavity a within the multiple cavities a. This cavity a can be located in the middle of the inner beam 12. The closed cavity a has a better mechanical transmission effect, can distribute collision energy more evenly, improve local stress, enhance resistance to barrier intrusion, and improve the protection effect on battery cells.

[0078] As shown in Figure 4, according to some embodiments of this application, the bending plate segment includes: a starting plate segment 121a, a plurality of intermediate plate segments 121b and a tail plate segment 121c arranged sequentially, wherein the starting plate segment 121a and the tail plate segment 121c are attached and connected, and / or the starting plate segment 121a is attached and connected to at least one intermediate plate segment 121b.

[0079] The inner beam 12 is constructed as a single plate structure and is bent from the inside out to define a specific shape of the beam structure. Adjacent bent plate segments can be set perpendicularly or with acute or obtuse angles, so that the cross-sectional shape of the inner beam 12 can be a common beam structure with cavity a, such as a grid or a cross-section, or it can be a cross-section with cavity a, such as a cross-section.

[0080] Furthermore, the starting plate segment 121a is connected to the tail plate segment 121c, or the starting plate segment 121a is connected to the intermediate plate segment 121b, so that at least one cavity a can be formed into a closed cavity a, thereby improving the impact resistance and intrusion resistance of the inner beam 12, and thus making the first beam 10 more impact-resistant and intrusion-resistant.

[0081] As shown in Figure 5, in the second embodiment, according to some embodiments of this application, the inner beam 12 includes a plurality of sub-beam bodies 124, which are connected and divided into a plurality of spaced cavities a.

[0082] For example, multiple spaced cavities a are divided in the first direction and / or the second direction.

[0083] In the second embodiment, multiple sub-beams 124 are assembled to form an inner beam 12. The sub-beams 124 connected to each other can be connected by welding, and multiple sub-beams 124 are assembled to form multiple cavities a, so as to achieve the same technical effect as the first embodiment.

[0084] The arrangement of multiple cavities a not only allows for more overlapping plate structures in the first and second directions, resulting in better resistance to barrier intrusion, but also enriches the mechanical transmission path. Collision energy can be transferred between the plate segments that define cavity a, and collision impact can be effectively dissipated.

[0085] The cross-sectional profiles of the multiple sub-beams 124 can be one or more of the following shapes: I-shaped, L-shaped, U-shaped, and Z-shaped.

[0086] For example, the shorter plate portion of the L-shaped sub-beam 124 is attached to and welded to the I-shaped sub-plate.

[0087] In this way, the sub-beams 124 connected to each other can overlap at least partially, and the overlapping area forms a welding area, which can improve the structural strength of the inner beam 12. In the first direction and the second direction, there are more overlapping plates (including the first plate 111, the second plate 112 and multiple sub-beams 124), which corresponds to better resistance to barrier intrusion in the direction and stronger overall structure.

[0088] As shown in Figures 6, 7 and 8, in the third embodiment, according to some embodiments of this application, the inner beam 12 is constructed as a profile and the outer beam 11 is constructed as a roll-formed part.

[0089] The inner beam 12 can be constructed as an extruded aluminum profile, while the outer beam 11 is constructed as high-strength roll-formed steel. The outer beams 11 of adjacent first beams 10 are all constructed as high-strength roll-formed steel to make the connection strength between the first beams 10 higher. Welding with the same material results in better sealing. At the same time, the internal structure is supported by extruded aluminum profiles, which can further improve the structural strength and rigidity of the energy chamber 100.

[0090] As shown in Figures 6, 7 and 8, in the third embodiment, according to some embodiments of this application, the inner beam 12 includes an inner frame 122, which is opposite to and fitted to at least one of the first plate 111 and the second plate 112.

[0091] At least one side surface of the inner frame 122 is attached to the inner wall of the outer beam 11, that is, at least one side surface of the inner frame 122 is attached to the first plate 111 or the second plate 112, so that the inner beam 12 and the first plate 111, or the inner beam 12 and the second plate 112, can transmit force through surface contact, and the fixation stability of the inner beam 12 in the outer beam 11 can also be higher. The third embodiment can also achieve structural reinforcement of the first beam 10 and better resistance to barrier intrusion, which will not be elaborated here.

[0092] The inner frame 122 is at least partially attached to both first plates 111 and both second plates 112 to improve the fixing effect of the inner beam 12, which is a profile component, within the outer beam 11.

[0093] As shown in FIGS. 6, 7 and 8, according to some embodiments of the present application, at least one connecting plate 123 is provided inside the inner frame 122. The connecting plate 123 is used to define a plurality of cavities a inside the inner frame 122, and the connecting plate 123 is connected to the inner frame 122.

[0094] Exemplarily, as shown in FIG. 6, there may be a plurality of connecting plates 123. The plurality of connecting plates 123 are opposite and spaced apart in the first direction, and both ends of the connecting plate 123 are connected to the inner frame 122 to define an inner beam 12 with a square-shaped cross-sectional profile. As shown in FIG. 7, there may be a plurality of connecting plates 123. A part of the connecting plates 123 are opposite and spaced apart in the first direction to divide a plurality of rectangular cavities inside the inner frame 122, and another part of the connecting plates 123 are arranged inside the rectangular cavities and connect the diagonal regions of the rectangular cavities to define an inner beam 12 with a half-meter-shaped cross-sectional profile. As shown in FIG. 8, the connecting plate 123 includes a connecting plate 123 extending along the first direction and connected to the first plate 111, and a connecting plate 123 extending along the second direction and connected to the second plate 112 to define an inner beam 12 with a grid-shaped cross-sectional profile.

[0095] In this way, on the one hand, through the plurality of connecting plates 123, a plurality of cavities a can be defined to improve the structural strength of the inner beam 12 and the ability to resist intrusion of the wall barrier. On the other hand, the arrangement of the plurality of connecting plates 123 can further enrich the mechanical transmission path of the inner beam 12. While improving the force, at least part of the collision energy can be offset to reduce the deformation of the inner beam 12.

[0096] [[ID=XI]]As shown in FIG. 3, according to some embodiments of the present application, the inner beam 12 is connected to one side of the outer beam 11 in the second direction, and a connecting member 13 is formed on this side.

[0097] The first plates 111 of the outer beam 11 are opposite in the first direction, and the second plates 112 are opposite in the second direction. The surface area of the second plate 112 is larger than the surface area of the first plate 111. Correspondingly, in the second direction, the inner beam 12 is connected to the outer beam 11, and a connecting member 13 is formed on one side of the second plate 112. Then, surrounding components are fixed through the connecting member 13, such as: fixing a reinforcing beam through the connecting member 13, connecting to a longitudinal beam through the connecting member 13, connecting to a sill beam 101 through the connecting member 13, etc.

[0098] The connecting member 13 can be configured as a rivet or a bolt, which can be used to connect the inner beam 12 and the outer beam 11, and further can be used to connect to surrounding components.

[0099] In this way, while improving the connection stability and reliability between the inner beam 12 and the outer beam 11, the surrounding components can be arranged sequentially with the outer beam 11 and the inner beam 12 in the direction of force transmission, so that the force on the outer beam 11 and the inner beam 12 can be transmitted to the connected surrounding components through the connector 13, such as to the longitudinal beam, the sill beam 101 or the collision beam, reducing the probability of collision energy being directly transmitted to the battery cell and improving the reliability and safety of the energy compartment 100.

[0100] According to the embodiment of this application, the energy cabin 100 has a frame defined by multiple first beams 10, and the multiple first beams 10 are all constructed as a composite beam structure with an outer beam 11 and an inner beam 12 inside, so as to improve the structural strength and rigidity of the energy cabin 100, improve the ability of the energy cabin 100 to resist barrier intrusion, and improve the safety and reliability of the energy cabin 100.

[0101] As shown in Figure 1, this application provides a vehicle 700, including: the chassis 400 in the above embodiment.

[0102] Other configurations and operations of the energy cabin 100, chassis 400, and vehicle 700 according to embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A chassis for a vehicle, wherein, include: First beam (10), there are multiple first beams (10), and multiple first beams (10) are connected to define an energy compartment (100), the energy compartment (100) is used to accommodate battery cells; in At least one of the first beams (10) includes: an outer beam (11) and an inner beam (12) sleeved within the outer beam (11), wherein one of the inner beam (12) and the outer beam (11) is constructed as a profile and the other of the inner beam (12) and the outer beam (11) is constructed as a roll forming member.

2. The chassis of the vehicle according to claim 1, wherein, Each of the first beams (10) includes an outer beam (11) and an inner beam (12) fitted inside the outer beam (11), and the outer beams (11) of the multiple first beams (10) are made of the same material.

3. The chassis of the vehicle according to claim 1 or 2, wherein, The outer beam (11) includes two first plates (111) arranged opposite each other in a first direction and two second plates (112) arranged opposite each other in a second direction. The two first plates (111) and the two second plates (112) are connected to form a cavity. The inner beam (12) is fitted inside the cavity. The first direction and the second direction have an angle.

4. The chassis of the vehicle according to any one of claims 1-3, wherein, The inner beam (12) is constructed as a roll-formed part, and the outer beam (11) is constructed as a profile part.

5. The chassis of the vehicle according to claim 4, wherein, The inner beam (12) includes: a plurality of continuous bent plate segments, with an included angle between two adjacent bent plate segments, and at least one bent plate segment is disposed opposite to the first plate (111) and at least one bent plate segment is disposed opposite to the second plate (112).

6. The chassis of the vehicle according to claim 5, wherein, The multiple bent plate segments divide the cavity into multiple cavities (a).

7. The chassis of the vehicle according to claim 5 or 6, wherein, The bent plate segment includes a starting plate segment (121a), multiple intermediate plate segments (121b), and a tail plate segment (121c) arranged sequentially. The starting plate segment (121a) is attached to and connected to the tail plate segment (121c), and / or the starting plate segment (121a) is attached to and connected to at least one of the intermediate plate segments (121b).

8. The chassis of the vehicle according to claim 4, wherein, The inner beam (12) includes multiple sub-beam bodies (124), which are connected and divided into multiple cavities (a) spaced apart.

9. The chassis of the vehicle according to claim 8, wherein, The cross-sectional profile of the sub-beam (124) is one or more of the following shapes: I-shaped, L-shaped, U-shaped, and Z-shaped.

10. The chassis of the vehicle according to any one of claims 1-3, wherein, The inner beam (12) is constructed as a profile, and the outer beam (11) is constructed as a roll-formed part.

11. The chassis of the vehicle according to claim 10, wherein, The inner beam (12) includes an inner frame (122), which is opposite to and fitted to at least one of the first plate (111) and the second plate (112).

12. The chassis of the vehicle according to claim 11, wherein, At least one connecting plate (123) is provided inside the inner frame (122). The connecting plate (123) is used to define a plurality of cavities (a) inside the inner frame (122), and the connecting plate (123) is connected to the inner frame (122).

13. The chassis of the vehicle according to any one of claims 1-12, wherein, The first beam (10) further includes a connector (13), through which the inner beam (12) and the outer beam (11) are connected.

14. A vehicle, wherein, include: The chassis (400) of the vehicle according to any one of claims 1-13.

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