Vehicle and chassis assembly thereof

Abstract

The invention discloses a vehicle and a chassis assembly (20) thereof. The chassis assembly comprises a vehicle frame (21), a first edge beam (41), a second edge beam (42), a protection plate assembly (50) and a battery monomer (30), the frame comprises a first supporting beam (211) and a second supporting beam (212), the first supporting beam and the second supporting beam extend in the first direction (X) and are arranged in a spaced mode in the second direction (Y), and the first direction intersects with the second direction. The first boundary beam and the second boundary beam are arranged in a spaced mode in the first direction and connected with the first supporting beam and the second supporting beam correspondingly; the protection plate assembly is connected to the first supporting beam, the second supporting beam, the first edge beam and the second edge beam, and an accommodating cavity is defined by the protection plate assembly, the first supporting beam, the second supporting beam, the first edge beam and the second edge beam; and the battery monomers are accommodated in the accommodating cavities. According to the chassis assembly structure, the bearing capacity can be improved, the collision performance in the second direction is improved, expansion of the battery monomers is limited through the first edge beams and the second edge beams, and the reliability of the battery monomers is improved.

Description

Vehicles and their chassis components Technical Field

[0001] The present application relates to the field of vehicle technology, and more particularly, to a vehicle and a chassis assembly thereof. Background Art

[0002] With the development of vehicle technology, people have put forward higher and higher requirements on the vehicle's ride comfort, lightweight and energy saving performance.

[0003] As a key load-bearing and protective component of a vehicle, the structural strength of the chassis assembly significantly impacts the vehicle's ride comfort and safety. Improving the structural strength of the chassis assembly is a pressing issue for those skilled in the art.

[0004] Summary of the Invention

[0005] The present application provides a vehicle and a chassis assembly thereof, which can improve the structural strength of the chassis assembly.

[0006] In a first aspect, an embodiment of the present application provides a chassis assembly of a vehicle, the chassis assembly including a vehicle frame, a first side beam, a second side beam, a guard plate assembly and a battery cell; the vehicle frame including a first support beam and a second support beam, the first support beam and the second support beam respectively extend in a first direction and are spaced apart along a second direction, and the first direction and the second direction intersect; the first side beam and the second side beam extend in the second direction and are spaced apart along the first direction, and are respectively connected to the first support beam and the second support beam; the guard plate assembly is connected to the first support beam, the second support beam, the first side beam and the second side beam, and is surrounded by the first support beam, the second support beam, the first side beam and the second side beam to form a receiving cavity; the battery cell is accommodated in the receiving cavity.

[0007] According to the chassis assembly provided in the embodiments of the present application, by providing a first side beam and a second side beam, the first side beam and the second side beam are spaced apart along a first direction, and the first side beam and the second side beam are respectively connected to the first support beam and the second support beam. This improves the rigidity and strength of the vehicle chassis assembly, thereby increasing the load-bearing capacity of the chassis assembly, while also improving the collision performance of the chassis assembly along the second direction. In addition, the first side beam and the second side beam can be used to limit the expansion of the battery cells, thereby improving the reliability of the battery cells.

[0008] In some embodiments, the first side beam includes a first beam body and a first reinforcement beam. The first beam body encloses a first accommodating cavity. The first reinforcement beam is disposed within the first accommodating cavity and connects two sides of the first beam body along a first direction. This is advantageously used to improve the structural strength and rigidity of the first side beam, thereby improving the overall structural strength and rigidity of the chassis assembly, and also advantageously improve the load-bearing capacity of the first side beam along the first direction. When a battery cell expands along the first direction, the first side beam can be used to withstand the expansion force of the battery cell along the first direction, thereby suppressing the expansion deformation of the battery cell along the first direction and improving the reliability of the battery cell.

[0009] In some embodiments, the first side beam further includes a second reinforcement beam, which is located within the first accommodating cavity and connects the first reinforcement beam and two sides of the first beam body along the third direction. The first direction, the second direction, and the third direction intersect with each other. This facilitates improving the structural strength and rigidity of the first side beam along the third direction, thereby increasing the load-bearing capacity of the first side beam along the third direction. This facilitates improving the structural strength and load-bearing capacity of the chassis assembly along the third direction.

[0010] In some embodiments, the first side beam has a pipe cavity extending along the second direction. The chassis assembly also includes a heat exchange pipe disposed within the pipe cavity. The heat exchange pipe is used to flow a fluid through the heat exchange pipe, which is used to exchange heat with the battery cells. This facilitates the layout of the internal space of the chassis assembly and, in turn, improves the structural compactness of the chassis structure. Furthermore, the pipe cavity can limit the heat exchange pipe, reducing the risk of the heat exchange pipe falling off during chassis assembly vibration.

[0011] In some embodiments, the chassis assembly further includes an adapter, at least a portion of which is located outside the pipe chamber and communicates with the heat exchange pipe. The adapter is used to connect the heat exchange boiler to the pipe outside the pipe chamber. In this way, the adapter can be used to connect the heat exchange pipe inside the pipe chamber with other pipes outside the pipe chamber, thereby achieving fluid circulation within the heat exchange pipe. The adapter also makes connection more convenient and quick.

[0012] In some embodiments, the first support beam includes a support beam body and a connecting beam, the connecting beam being disposed on a side of the first support beam facing the second support beam along the second direction; an end portion of the connecting beam along the first direction having a first inclined surface inclined relative to the first and second directions; an end portion of the first side beam along the second direction having a second inclined surface inclined relative to the first and second directions, the first inclined surface and the second inclined surface being abuttingly connected to each other. This facilitates enabling the connection between the first side beam and the first support beam to withstand loads in both the first and second directions, thereby further improving the structural load-bearing capacity of the chassis assembly.

[0013] In some embodiments, the first inclined surface and the second inclined surface are welded together, which is beneficial to further improve the connection strength between the first side beam and the first support beam, thereby improving the structural strength of the chassis assembly.

[0014] In some embodiments, the second side beam includes a second beam body and a third reinforcement beam. The second beam body encloses a second accommodating cavity. The third reinforcement beam is disposed within the second accommodating cavity and connects two sides of the second beam body along the first direction. This helps improve the structural strength and rigidity of the second side beam, thereby increasing the load-bearing capacity of the second side beam. The second side beam can also reduce the risk of expansion and deformation of battery cells, thereby improving the reliability of the battery cells.

[0015] In some embodiments, the guard plate assembly includes a first cover plate and a second cover plate, the first cover plate and the second cover plate being respectively arranged along the third direction to cover the first support beam, the second support beam, the first side beam, and the second side beam, with the first direction, the second direction, and the third direction intersecting in pairs. This facilitates assembly of the battery on the chassis assembly.

[0016] In a second aspect, an embodiment of the present application provides a vehicle comprising a chassis assembly as in any embodiment of the first aspect.

[0017] The vehicle provided according to the embodiment of the present application has the same technical effects as the chassis assembly provided by any of the above embodiments, and thus will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0019] FIG1 is a schematic structural diagram of a vehicle provided in one embodiment of the present application;

[0020] FIG2 is a schematic diagram of a partial structure of a battery in a chassis assembly provided in one embodiment of the present application;

[0021] FIG3 is a schematic diagram of an exploded structure of a battery cell in a chassis assembly according to an embodiment of the present application;

[0022] FIG4 is a schematic structural diagram of a chassis assembly provided in one embodiment of the present application;

[0023] FIG5 is a front view of a chassis assembly provided by an embodiment of the present application with some structures omitted;

[0024] FIG6 is a schematic cross-sectional view of FIG5 along AA;

[0025] FIG7 is another cross-sectional structural schematic diagram along AA of FIG5;

[0026] FIG8 is a partial enlarged view of point B in FIG5 ;

[0027] FIG9 is a schematic structural diagram of another chassis assembly provided in an embodiment of the present application;

[0028] FIG10 is a front view of another chassis assembly provided by an embodiment of the present application with some structures omitted;

[0029] FIG11 is a schematic diagram of the cross-sectional structure of FIG10 along CC.

[0030] In the drawings, the drawings are not drawn to scale.

[0031] Explanation of the accompanying drawings: 1. Vehicle; 1a. Motor; 1b. Controller; 10. Battery; 20. Chassis assembly; 21. Vehicle frame; 211. First support beam; 2111. Support beam body; 2112. Connecting beam; 2112a. First inclined surface; 212. Second support beam; 30. Battery cell; 31. Housing; 311. Shell; 311a. Opening; 312. End cap; 32. Electrode assembly; 41. First side beam; 41a. First accommodating cavity; 41b. Pipeline cavity; 41c. Second inclined surface; 411. First beam body; 412. First reinforcement beam; 413. Second reinforcement beam; 42. Second side beam; 42a. Second accommodating cavity; 421. Second beam body; 422. Third reinforcement beam; 43. Heat exchange pipe; 44. Adapter; 50. Guard plate assembly; 51. First cover plate; 52. Second cover plate; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having," as well as any variations thereof, in the specification and claims of this application and the accompanying drawings, are intended to cover non-exclusive inclusions. The terms "first," "second," and so on, in the specification and claims of this application and the accompanying drawings, are used to distinguish different objects, not to describe a specific order or a primary-secondary relationship.

[0034] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0036] The term "and / or" in this application simply describes the relationship between related objects, indicating that three possible relationships exist. For example, C and / or D can mean: C exists alone, C and D exist simultaneously, or D exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0037] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0038] The term "plurality" used in this application refers to two or more (including two).

[0039] In CTC (Cell to Chassis) technology, battery cells are assembled with other structural components in the chassis assembly to form a battery. Some of the chassis assembly's structural components serve as part of the battery housing, improving chassis space utilization, facilitating the installation of more battery cells, and increasing battery energy storage. However, CTC technology suffers from insufficient rigidity after the chassis assembly is complete.

[0040] Based on the above problems, the inventors have improved the structure of the chassis assembly of the vehicle. The technical solutions described in the embodiments of the present application are applicable to the chassis assembly and the vehicle using the chassis assembly.

[0041] The chassis assembly of the vehicle provided according to the embodiment of the present application includes a vehicle frame, a guard plate assembly and a battery cell. The vehicle frame includes a first support beam and a second support beam, the first support beam and the second support beam respectively extending in a first direction and spaced apart along a second direction, and the first direction and the second direction intersect. The first side beam and the second side beam extend in the second direction and are respectively connected to the first support beam and the second support beam. The guard plate assembly is connected to the first support beam, the second support beam, the first side beam and the second side beam, and is surrounded by the first support beam, the second support beam, the first side beam and the second side beam to form a receiving cavity. The battery cell is accommodated in the receiving cavity.

[0042] The chassis assembly provided in the embodiment of the present application is beneficial to improving the connection strength between the first side beam and the second side beam and the first support beam and the second support beam respectively, thereby improving the overall structural strength of the chassis assembly by setting the first side beam and the second side beam, and setting the first side beam and the second side beam to be connected to the first support beam and the second support beam respectively.

[0043] As shown in FIG1 , a battery 10 is provided inside a vehicle 1. The battery 10 may be provided at the bottom, head, or tail of the vehicle 1. The battery 10 may be used to power the vehicle 1, for example, the battery 10 may serve as an operating power source for the vehicle 1.

[0044] The battery 10 may be assembled separately and then installed on the vehicle 1 , or, during the assembly process of the vehicle 1 , some structural parts of the vehicle 1 may be used as part of the battery 10 housing and assembled to form the battery 10 .

[0045] The vehicle 1 may further include a controller 1b and a motor 1a. The controller 1b is used to control the battery 10 to supply power to the motor 1a, for example, to meet the power requirements of the vehicle 1 during starting, navigation, and driving.

[0046] In some embodiments of the present application, the battery 10 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0047] 2 , the battery 10 includes battery cells (not shown in FIG2 ) and may further include a case for accommodating the battery cells.

[0048] The box is used to accommodate battery cells. The box can be assembled during the assembly process of the vehicle 1, and at least part of the vehicle's chassis assembly is used as part of the box, which corresponds to CTC (Cell to Chassis) technology.

[0049] In the battery 10, there can be one or more battery cells. If there are multiple battery cells, they can be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections. Multiple battery cells can be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery module 20 is housed in a housing. Alternatively, multiple battery cells can be first connected in series, in parallel, or in a hybrid connection to form a battery module 20. Multiple battery modules 20 are then connected in series, in parallel, or in a hybrid connection to form a single unit, which is then housed in a housing.

[0050] Please refer to Figure 3, which is an exploded schematic diagram of a battery cell 30. The battery cell 30 provided in the embodiment of the present application includes an electrode assembly 32 and a housing 31. The housing 31 has a receiving cavity, and the electrode assembly 32 is received in the receiving cavity.

[0051] In some embodiments, the housing 31 may include a shell 311 and an end cap 312, wherein the shell 311 is a hollow structure with an opening on one side, and the end cap 312 covers the opening 311a of the shell 311 and forms a sealed connection to form a sealed space for accommodating the electrode assembly 32 and the electrolyte.

[0052] When assembling the battery cell 30 , the electrode assembly 32 may be placed in the housing 311 first, the end cap 312 may be placed over the opening of the housing 311 , and then the electrolyte may be injected into the housing 311 through the electrolyte injection port on the end cap 312 .

[0053] In some embodiments, the housing 31 may also be used to contain electrolyte, such as electrolyte solution. The housing 31 may have various structural forms.

[0054] FIG3 shows a schematic structural diagram of a battery cell provided in an embodiment of the present application.

[0055] The housing 311 can have a variety of shapes, such as a cylinder, a rectangular parallelepiped, etc. The shape of the housing 311 can be determined based on the specific shape of the electrode assembly 32. For example, if the electrode assembly 32 has a cylindrical structure, the housing 311 can also be a cylindrical structure. If the electrode assembly 32 has a rectangular parallelepiped structure, the housing 311 can also be a rectangular parallelepiped structure. In FIG4 , for example, both the housing 311 and the electrode assembly 32 have rectangular parallelepiped structures.

[0056] The shell 311 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0057] There may be one or more electrode assemblies 32 housed in the housing 311. In FIG4 , there are two electrode assemblies 32 housed in the housing 311.

[0058] In some embodiments, the electrode assembly 32 further includes a positive electrode sheet, a negative electrode sheet, and a separator. The electrode assembly 32 may be a wound structure formed by winding the positive electrode sheet, the separator, and the negative electrode sheet. The electrode assembly 32 may also be a stacked structure formed by stacking the positive electrode sheet, the separator, and the negative electrode sheet.

[0059] The positive electrode sheet may include a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The negative electrode sheet may include a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The separator is located between the positive and negative electrode sheets, isolating the positive and negative electrode sheets to reduce the risk of short circuits between the positive and negative electrode sheets.

[0060] The tabs in the electrode assembly 32 are divided into positive tabs and negative tabs. The positive tab is the portion of the positive electrode current collector that is not coated with the positive electrode active material layer. The negative tab is the portion of the negative electrode current collector that is not coated with the negative electrode active material layer.

[0061] The battery 10 provided in the embodiment of the present application has the same technical effects as the welding component 40 or the battery cell 30 provided in the embodiment of the present application, and thus will not be described in detail here.

[0062] As shown in Figures 1 to 4, the chassis assembly 20 of the vehicle 1 provided according to an embodiment of the present application includes a frame 21, a guard plate assembly 50, and a battery cell 30. The frame 21 includes a first support beam 211 and a second support beam 212. The first support beam 211 and the second support beam 212 extend along a first direction X, respectively, and are spaced apart along a second direction Y. The first direction X and the second direction Y intersect. The first side beam 41 and the second side beam 42 extend along the second direction Y, are spaced apart along the first direction X, and are connected to the first support beam 211 and the second support beam 212, respectively. The guard plate assembly 50 is connected to the first support beam 211, the second support beam 212, the first side beam 41, and the second side beam 42, and is surrounded by the first support beam 211, the second support beam 212, the first side beam 41, and the second side beam 42 to form a receiving cavity. The battery cell 30 is accommodated in the receiving cavity.

[0063] As the primary load-bearing component of vehicle 1, frame 21 bears the weight of most of the vehicle's structural components, resulting in a high load-bearing capacity. First support beams 211 and second support beams 212 of frame 21 extend along a first direction X and are spaced apart along a second direction Y. The first direction X intersects the second direction Y, so the first direction X can be the longitudinal direction of vehicle 1, and the second direction Y can be the lateral direction of vehicle 1.

[0064] The first support beam 211 and the second support beam 212 can be respectively the rocker beams on both sides of the vehicle frame 21 along the second direction Y. In this way, while the rocker beams provide support for the body and other structural components of the vehicle 1, the first support beam 211 and the second support beam 212, together with the first side beam 41 and the second side beam 42, form a partial structure of the battery 10 for supporting the battery cells 30. Of course, the first support beam 211 and the second support beam 212 can also be two beam structures that are opposite to each other along the second direction Y in other parts of the vehicle frame 21.

[0065] Using the first support beam 211 and the second support beam 212 of the frame 21 of the vehicle 1 as part of the battery 10 is beneficial to saving space in the chassis of the vehicle 1, so that the saved space can be used to set up more battery cells 30, which is beneficial to increasing the energy storage capacity of the battery 10.

[0066] The first side beam 41 and the second side beam 42 are connected to the first support beam 211 and the second support beam 212 respectively, and the first side beam 41 and the second side beam 42 together with the first support beam 211 and the second support beam 212 serve as the main load-bearing components of the battery 10. The first side beam 41 and the second side beam 42 are provided, and the first support beam 211 and the second support beam 212 are connected by a beam structure, which can improve the connection strength of the first support beam 211 and the second support beam 212, thereby improving the overall structural strength and load-bearing capacity of the chassis assembly 20 of the vehicle 1.

[0067] The first side beam 41 and the second side beam 42 can be steel structural beams or aluminum alloy structural beams. The first side beam 41 and the second side beam 42 can have various suitable cross-sectional configurations to minimize their weight while ensuring their structural strength.

[0068] The first side beam 41 and the second side beam 42 extend along the second direction Y. The first side beam 41 and the second side beam 42 may extend along the second direction Y in a strip shape, a block shape, or other suitable structural forms.

[0069] The guard plate assembly 50 is connected to the first support beam 211, the second support beam 212, the first side beam 41, and the second side beam 42, and encloses a housing cavity. The housing cavity can be sealed with good sealing performance to achieve sealing of the battery cells 30 within the housing cavity. The first support beam 211, the second support beam 212, the first side beam 41, and the second side beam 42 can provide a certain degree of support for the guard plate assembly 50.

[0070] Optionally, the guard plate assembly 50 can be an integrally formed structure, connected to the first support beam 211, the second support beam 212, the first side beam 41, and the second side beam 42. Alternatively, the guard plate assembly 50 can include multiple sub-components that together enclose the accommodating cavity. The specific selection can be based on actual needs.

[0071] The first side beam 41 and the second side beam 42 are respectively connected to the first support beam 211 and the second support beam 212 and are spaced apart along the second direction Y. The first side beam 41 and the second side beam 42 can respectively extend along the second direction Y. The first direction X and the second direction Y can intersect at an acute angle, a right angle, or an obtuse angle. For example, the first direction X and the second direction Y are perpendicular to each other.

[0072] The first side beam 41 and the second side beam 42 are respectively connected to the first support beam 211 and the second support beam 212, so the first side beam 41 and the second side beam 42 can provide a certain support effect for the first support beam 211 and the second support beam 212, especially the support effect along the second direction Y, thereby improving the collision performance of the chassis along the second direction Y.

[0073] In addition, since the first side beam 41 and the second side beam 42 have a certain structural strength, during the process of the battery cell 30 expanding and deforming along the first direction X, the structural strength of the first side beam 41 and the second side beam 42 themselves can be used to bear the expansion force of the battery cell 30 to limit the expansion deformation of the battery cell 30 along the first direction X.

[0074] The chassis assembly 20 provided in the embodiment of the present application is provided with a first side beam 41 and a second side beam 42, which are spaced apart along a first direction X and respectively connected to a first support beam 211 and a second support beam 212. This improves the rigidity and strength of the chassis assembly 20 of the vehicle 1, thereby increasing the load-bearing capacity of the chassis assembly 20, while also enhancing the collision performance of the chassis assembly 20 along a second direction Y. Furthermore, the first side beam 41 and the second side beam 42 can be used to limit the expansion of the battery cells 30, thereby improving the reliability of the battery cells 30.

[0075] As shown in Figures 5 and 6, in some embodiments, the first side beam 41 includes a first beam body 411 and a first reinforcing beam 412. The first beam body 411 encloses a first accommodating cavity 41a. The first reinforcing beam 412 is arranged in the first accommodating cavity 41a and connects both sides of the first beam body 411 along the first direction X.

[0076] The first side beam 41 includes a first beam body 411 and a first reinforcing beam 412 . The first reinforcing beam 412 is used to reinforce the structure of the first side beam 41 , which can further improve the structural strength of the first side beam 41 and thereby improve the overall structural strength of the chassis assembly 20 .

[0077] The first reinforcing beam 412 connects both sides of the first beam body 411 along the first direction X. The first reinforcing beam 412 can be arranged parallel to the first direction X, or the first reinforcing beam 412 can be arranged in a direction inclined relative to the first direction X.

[0078] It can be understood that the provision of the first side beam 41 including the first beam body 411 and the first reinforcing beam 412 is conducive to improving the structural strength and rigidity of the first side beam 41, thereby improving the overall structural strength and rigidity of the chassis assembly 20. In addition, the provision of the first reinforcing beam 412 connecting the two sides of the first beam body 411 along the first direction X is conducive to improving the load-bearing capacity of the first side beam 41 along the first direction X. When the battery cell 30 expands along the first direction X, the first side beam 41 can be used to withstand the expansion force of the battery cell 30 along the first direction X, thereby suppressing the expansion deformation of the battery cell 30 along the first direction X, and improving the reliability performance of the battery cell 30.

[0079] As shown in Figures 5 and 7, in some embodiments, the first side beam 41 also includes a second reinforcing beam 413, which is located in the first accommodating cavity 41a and connects the first reinforcing beam 412 and the first beam body 411 on both sides along the third direction Z. The first direction X, the second direction Y and the third direction Z intersect with each other.

[0080] The second reinforcing beam 413 is arranged in the first accommodating cavity 41a and connects the two sides of the first beam body 411 along the third direction Z. The provision of the second reinforcing beam 413 is beneficial to improving the load-bearing capacity of the first side beam 41 along the third direction Z. When the chassis assembly 20 is subjected to a collision force along the third direction Z, it is beneficial to improve the ability of the chassis assembly 20 to withstand the collision load along the third direction Z.

[0081] The first direction X, the second direction Y, and the third direction Z intersect each other, and illustratively, the first direction X and the second direction Y are perpendicular to each other.

[0082] The second reinforcing beam 413 is connected to both sides of the first beam body 411 along the third direction Z. The second reinforcing beam 413 can be parallel to the third direction Z or inclined relative to the third direction Z, both of which can improve the bearing capacity of the first side beam 41 along the third direction Z.

[0083] Therefore, the first side beam 41 also includes a second reinforcing beam 413, and the second reinforcing beam 413 is connected to both sides of the first beam body 411 along the third direction Z, which is beneficial to improving the structural strength and structural stiffness of the first side beam 41 along the third direction Z, and thus improving the bearing capacity of the first side beam 41 along the third direction Z. This is beneficial to improving the structural strength and bearing capacity of the chassis assembly 20 along the third direction Z.

[0084] Continuing with Figures 5 and 7 , in some embodiments, the first side beam 41 has a pipe cavity 41b extending therethrough along the second direction Y. The chassis assembly 20 further includes a heat exchange pipe 43 disposed within the pipe cavity 41b . The heat exchange pipe 43 is configured to allow fluid to flow therethrough, and the fluid is configured to exchange heat with the battery cells 30 .

[0085] The pipe chamber 41b is located within the first side beam 41 and extends through the first side beam 41 along the second direction Y, i.e., the extension direction of the first side beam 41. The heat exchange pipe 43 is disposed within the pipe chamber 41b. This utilizes the space within the first side beam 41 for arranging the heat exchange pipe 43, reducing the space outside the first side beam 41 that would otherwise be occupied by the heat exchange pipe 43, thereby saving the extra space that would otherwise be occupied by the heat exchange pipe 43.

[0086] The heat exchange pipe 43 is used for fluid to flow through, and cooling water or heating water can flow through the heat exchange pipe 43 to cool or heat the battery cells 30 .

[0087] Therefore, by providing the first side member 41 with a pipe cavity 41b, the space within the first side member 41 can be utilized to arrange the heat exchange pipe 43, which facilitates the layout of the interior space of the chassis assembly 20 and further improves the structural compactness of the chassis structure. In addition, the pipe cavity 41b can limit the heat exchange pipe 43, reducing the risk of the heat exchange pipe 43 falling off during the vibration of the chassis assembly 20.

[0088] As shown in Figure 9, in some embodiments, the chassis assembly 20 also includes an adapter 44, at least a portion of which is located outside the pipe chamber 41b and is connected to the heat exchange pipe 43. The adapter 44 is used to connect the heat exchange pipe 43 with the pipe outside the pipe chamber 41b.

[0089] The adapter 44 is connected to the heat exchange pipeline 43, and the adapter 44 can be used to connect the heat exchange pipeline 43 inside the pipeline chamber 41b with other pipelines outside the pipeline chamber 41b to achieve circulation of the fluid in the heat exchange pipeline 43. The use of the adapter 44 makes the connection more convenient and quick.

[0090] As shown in Figures 5 and 8, in some embodiments, the first support beam 211 includes a support beam body 2111 and a connecting beam 2112, and the connecting beam 2112 is arranged on the side of the first support beam 211 toward the second support beam 212 along the second direction Y; the end of the connecting beam 2112 along the first direction X has a first inclined surface 2112a inclined relative to the first direction X and the second direction Y, and the end of the first side beam 41 along the second direction Y has a second inclined surface 41c inclined relative to the first direction X and the second direction Y, and the first inclined surface 2112a and the second inclined surface 41c are connected to each other in a bonded manner.

[0091] The support beam body 2111 is used to connect to the body and other structures of the vehicle 1 , and the connecting beam 2112 is used to connect to the first side beam 41 and the second side beam 42 .

[0092] The first inclined surface 2112a and the second inclined surface 41c are both inclined relative to the first direction X and the second direction Y. Therefore, the first inclined surface 2112a and the second inclined surface 41c may be arranged at 45° relative to the first direction X and the second direction Y.

[0093] It is understandable that the first side beam 41 and the second support beam 212 may also be connected in the above-mentioned inclined plane manner, or the second side beam 42 may be connected in the first support beam 211 and the second support beam 212 in the inclined plane manner respectively.

[0094] The first side beam 41 is connected to the first side beam 41 through the first inclined surface 2112a and the second inclined surface 41c. After the first side beam 41 and the connecting beam 2112 are connected, the first inclined surface 2112a and the second inclined surface 41c can withstand both the load along the first direction X and the load along the second direction Y.

[0095] Optionally, the first inclined surface 2112a and the second inclined surface 41c may be connected by welding, or may be connected by screws, pins, rivets, etc.

[0096] Therefore, setting the first side beam 41 and the first support beam 211 to be connected through the first inclined surface 2112a and the second inclined surface 41c is beneficial for the connection between the first side beam 41 and the first support beam 211 to bear loads in both the first direction X and the second direction Y, which is beneficial for further improving the structural bearing capacity of the chassis assembly 20.

[0097] In some embodiments, the first inclined surface 2112a and the second inclined surface 41c are welded.

[0098] The welding connection has a relatively high connection strength, which is beneficial for further improving the connection strength between the first side beam 41 and the first support beam 211 , thereby improving the structural strength of the chassis assembly 20 .

[0099] As shown in Figures 10 and 11, in some embodiments, the second side beam 42 includes a second beam body 421 and a third reinforcing beam 422. The second beam body 421 encloses a second accommodating cavity 42a, and the third reinforcing beam 422 is arranged in the second accommodating cavity 42a and connects both sides of the second beam body 421 along the first direction X.

[0100] The second side beam 42 includes a second beam body 421 and a third reinforcing beam 422 , which is beneficial to improving the structural strength and structural rigidity of the second side beam 42 , thereby improving the bearing capacity of the second side beam 42 .

[0101] The third reinforcing beam 422 connects both sides of the second beam body 421 along the first direction X. The third reinforcing beam 422 can extend along the first direction X, or alternatively, be inclined relative to the first direction X. In this manner, the third reinforcing beam 422 is connected to both sides of the second beam body 421 along the first direction X, thereby increasing the bearing capacity of the second beam body 421 along the first direction X. When the battery cells 30 expand, the second beam body 421 can withstand the expansion force of the battery cells 30 along the first direction X, reducing the risk of deformation caused by expansion of the battery cells 30.

[0102] Therefore, the second side beam 42, including the second beam body 421 and the third reinforcing beam 422, is provided to improve the structural strength and rigidity of the second side beam 42, thereby increasing the load-bearing capacity of the second side beam 42. The second side beam 42 can also be used to reduce the risk of expansion and deformation of the battery cell 30, thereby improving the reliability of the battery cell 30.

[0103] As shown in Figures 4 and 9, in some embodiments, the guard plate assembly 50 includes a first cover plate 51 and a second cover plate 52, and the first cover plate 51 and the second cover plate 52 are respectively covered on the first support beam 211, the second support beam 212, the first side beam 41 and the second side beam 42 along the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect with each other.

[0104] With such an arrangement, the battery cell 30 can be assembled after one of the first cover plate 51 and the second cover plate 52 is installed, and then the other of the first cover plate 51 and the second cover plate 52 can be covered to form a closed accommodating cavity, which is beneficial to improving the convenience of assembling the battery 10 on the chassis assembly 20.

[0105] The vehicle 1 provided according to an embodiment of the present application includes the chassis assembly 20 provided in an embodiment of the present application.

[0106] The vehicle 1 provided in the embodiment of the present application has the same technical effects as the chassis assembly 20 provided in the embodiment of the present application, and thus will not be described in detail here.

[0107] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A chassis assembly of a vehicle, the chassis assembly comprising: A vehicle frame, comprising a first support beam and a second support beam, wherein the first support beam and the second support beam extend along a first direction respectively and are spaced apart along a second direction, and the first direction and the second direction intersect; a first side beam and a second side beam, the first side beam and the second side beam extending along the second direction, being spaced apart along the first direction, and respectively connected to the first support beam and the second support beam; A guard plate assembly, connected to the first support beam, the second support beam, the first side beam and the second side beam, and surrounded by the first support beam, the second support beam, the first side beam and the second side beam to form a receiving cavity; The battery cell is accommodated in the accommodation cavity.

2. The chassis assembly according to claim 1, wherein: The first side beam includes a first beam body and a first reinforcing beam. The first beam body encloses a first accommodating cavity. The first reinforcing beam is disposed in the first accommodating cavity and connects two sides of the first beam body along the first direction.

3. The chassis assembly according to claim 2, wherein: The first side beam also includes a second reinforcing beam, which is located in the first accommodating cavity and connects the first reinforcing beam and two sides of the first beam body along a third direction. The first direction, the second direction and the third direction intersect each other.

4. The chassis assembly according to any one of claims 1 to 3, wherein: The first side beam has a pipeline chamber penetrating along the second direction; The chassis assembly further includes a heat exchange pipeline, which is disposed in the pipeline chamber. The heat exchange pipeline is used for a fluid to flow through, and the fluid is used for heat exchange with the battery monomer.

5. The chassis assembly according to claim 4, wherein: The chassis assembly also includes an adapter, at least a portion of which is located outside the pipeline chamber and communicates with the heat exchange pipeline, and the adapter is used to connect the heat exchange pipeline with the pipeline outside the pipeline chamber.

6. The chassis assembly according to any one of claims 1 to 5, wherein: The first support beam includes a support beam body and a connecting beam, wherein the connecting beam is arranged on one side of the first support beam along the second direction toward the second support beam; the end of the connecting beam along the first direction has a first inclined surface inclined relative to the first direction and the second direction, and the end of the first side beam along the second direction has a second inclined surface inclined relative to the first direction and the second direction, and the first inclined surface and the second inclined surface are connected to each other in a close fit.

7. The chassis assembly according to claim 6, wherein: The first inclined surface and the second inclined surface are connected by welding.

8. A chassis assembly according to any one of claims 1 to 7, wherein: The second side beam includes a second beam body and a third reinforcing beam. The second beam body is enclosed to form a second accommodating cavity. The third reinforcing beam is arranged in the second accommodating cavity and connects two sides of the second beam body along the first direction.

9. The chassis assembly according to any one of claims 1 to 8, wherein: The guard plate assembly includes a first cover plate and a second cover plate, and the first cover plate and the second cover plate are respectively covered on the first support beam, the second support beam, the first side beam and the second side beam along a third direction, and the first direction, the second direction and the third direction intersect each other.

10. A vehicle comprising a chassis assembly according to any one of claims 1 to 9.

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