Chassis and vehicle

Abstract

The utility model discloses a chassis and a vehicle. The chassis comprises a longitudinal beam and a tray, the battery assembly is located in the battery installation area and comprises a first battery piece and a second battery piece, the second battery piece is arranged above the first battery piece in a spaced mode, and the upper side of the second battery piece does not protrude out of the longitudinal beam in the vertical direction. Therefore, the battery assembly is arranged in the battery mounting area and comprises the first battery piece and the second battery piece, and the second battery piece is arranged above the first battery piece at an interval, so that the space below the chassis can be fully utilized, and the capacity of the battery assembly is increased; and the loading requirement of the new energy large-capacity power battery can be met, and the cruising ability of the vehicle is improved. Furthermore, the upper side of the second battery piece does not protrude out of the longitudinal beam in the vertical direction, so that the double-layer arrangement of the battery assembly can be prevented from interfering with other parts.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a chassis and a vehicle. Background Art

[0002] With the development of technology, vehicles are more and more widely used. To ensure the normal operation of vehicles, especially new energy vehicles, a power battery pack needs to be installed on the chassis.

[0003] In the related art, the structural design of the chassis of the vehicle is not reasonable enough. Limited by the width of the frame longitudinal beam and the surrounding parts of the chassis, on the one hand, the layout and fixation of the battery pack on the chassis are very difficult, and a large-volume power battery pack cannot be set on the chassis, which cannot meet the power requirements of the vehicle. On the other hand, the installation and setting of the battery pack are easy to interfere with other surrounding components. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a chassis, in which the structural layout of the battery assembly is more reasonable and the volume is larger.

[0005] The utility model further provides a vehicle.

[0006] The chassis according to the embodiment of the utility model includes: longitudinal beams, the longitudinal beams extend in the front-rear direction and there are two of them, and the two longitudinal beams are spaced apart in the left-right direction; a tray, the tray is arranged at the rear ends of the two longitudinal beams, the tray is located below the two longitudinal beams and is connected to the two longitudinal beams, and the tray and the two longitudinal beams jointly define a battery installation area; a battery assembly, the battery assembly is located in the battery installation area and includes a first battery component and a second battery component, the second battery component is spaced above the first battery component, and the upper side of the second battery component does not protrude above the longitudinal beam in the up-down direction.

[0007] Thus, by providing the tray, the tray and the two longitudinal beams jointly define the battery installation area, the battery assembly is arranged in the battery installation area, and the battery assembly includes a first battery component and a second battery component, and the second battery component is spaced above the first battery component, so that the space below the chassis can be fully utilized, the capacity of the battery assembly can be increased, the vehicle loading requirement of a large-capacity power battery for new energy can be met, and the endurance of the vehicle can be improved. Further, the upper side of the second battery component does not protrude above the longitudinal beam in the up-down direction, so that the double-layer setting of the battery assembly can be prevented from interfering with other components.

[0008] In some examples of the present utility model, the front end of the second battery component protrudes forward relative to the front end of the first battery component, and the rear end of the first battery component protrudes backward relative to the rear end of the second battery component.

[0009] In some examples of the present utility model, at least one end of the first battery component in the left-right direction protrudes outward relative to the second battery component, and the volume of the first battery component is greater than the volume of the second battery component.

[0010] In some examples of the present utility model, the part of the longitudinal beam corresponding to the battery assembly includes a first beam section and a second beam section. The first beam section is connected to the front end of the second beam section and is bent upward relative to the second beam section. The upper surface of the second battery component includes a first part and a second part. The second part extends flatly in the horizontal plane and corresponds to the second beam section. The first part is located on the front side of the second part. The first part protrudes upward relative to the second part and corresponds to the first beam section.

[0011] In some examples of the present utility model, the tray includes a bottom plate and a connecting plate. The bottom plate and the longitudinal beam are spaced apart in the up-down direction. A plurality of the connecting plates are provided on both the left and right sides of the bottom plate. The connecting plates extend in the up-down direction and are connected to the longitudinal beam. The first battery component is disposed on the bottom plate. A baffle is provided on the front side of the bottom plate. The baffle corresponds to the first battery component in the front-rear direction. The second battery component is spaced apart from the baffle in the up-down direction.

[0012] In some examples of the present utility model, the chassis further includes a first connecting cross beam. The first connecting cross beam extends in the left-right direction and is connected to the two longitudinal beams. The first connecting cross beam is spaced above the first battery component and is connected to the rear side of the second battery component.

[0013] In some examples of the present utility model, the chassis further includes a rear axle assembly. The rear axle assembly includes a rear axle component, a transmission shaft, and a leaf spring component. The rear axle component extends in the left-right direction and is adapted to be connected to the left and right rear wheels of the vehicle. The transmission shaft extends in the front-rear direction. The rear end of the transmission shaft is connected to the rear axle component. There are two leaf spring components. The two leaf spring components extend in the front-rear direction and are respectively connected to both ends of the rear axle component. The left and right ends of the first connecting cross beam respectively protrude outward relative to the two longitudinal beams. The left and right ends of the first connecting cross beam are respectively connected to the rear ends of the two leaf spring components.

[0014] In some examples of the present utility model, the chassis further includes a second connecting cross beam. The first connecting cross beam extends in the left - right direction and is connected to the two longitudinal beams. The second connecting cross beam is connected to the front side of the second battery component.

[0015] In some examples of the present utility model, the second connecting cross beam is blocked between the second battery component and the rear axle component in the front - rear direction.

[0016] A vehicle according to an embodiment of the present utility model includes: the chassis described above.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above - mentioned and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a partial side - view schematic diagram of a chassis according to an embodiment of the present utility model;

[0020] Figure 2 is a partial top - view schematic diagram of a chassis according to an embodiment of the present utility model;

[0021] Figure 3 is a partial schematic diagram of a chassis according to an embodiment of the present utility model;

[0022] Figure 4 is a partial schematic diagram of another perspective of a chassis according to an embodiment of the present utility model;

[0023] Figure 5 is a partial schematic diagram of another perspective of a chassis according to an embodiment of the present utility model.

[0024] REFERENCE NUMERALS:

[0025] 100, chassis; 101, battery installation area;

[0026] 10, longitudinal beam; 11, first beam segment; 12, second beam segment;

[0027] 20, tray; 21, bottom plate; 22, connecting plate; 23, baffle;

[0028] 30, battery assembly; 31, first battery component; 32, second battery component; 321, first part; 322, second part;

[0029] 40, first connecting cross beam;

[0030] 50. Rear axle assembly; 51. Rear axle part; 52. Propeller shaft; 53. Leaf spring part;

[0031] 60. Second connecting crossbeam. Detailed implementation mode

[0032] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0033] Below with reference to Figures 1-5 Describe the chassis 100 according to an embodiment of the present invention. The chassis 100 can be applied to a vehicle.

[0034] In combination with Figures 1-5 As shown, the chassis 100 according to the present invention mainly includes: longitudinal beams 10, a tray 20, and a battery assembly 30.

[0035] Among them, the longitudinal beams 10 extend in the front-rear direction and there are two of them. The two longitudinal beams 10 are spaced apart in the left-right direction. The tray 20 is arranged at the rear ends of the two longitudinal beams 10. The tray 20 is located below the two longitudinal beams 10 and is connected to the two longitudinal beams 10. The tray 20 and the two longitudinal beams 10 jointly define a battery installation area 101. The battery assembly 30 is located in the battery installation area 101 and includes a first battery part 31 and a second battery part 32. The second battery part 32 is spaced apart and arranged above the first battery part 31. The upper side of the second battery part 32 does not protrude above the longitudinal beam 10 in the up-down direction.

[0036] Specifically, both of the two longitudinal beams 10 extend in the front-rear direction, and the two longitudinal beams 10 are spaced apart in the left-right direction. Crossbeams can be arranged between the two longitudinal beams 10. The two ends of the crossbeam are respectively connected to the two longitudinal beams 10. In this way, the basic framework of the chassis 100 can be formed to provide support for other components of the vehicle.

[0037] The vehicle needs electricity to drive, and the battery assembly 30 needs to be arranged on the chassis 100. By arranging the tray 20 at the rear ends of the two longitudinal beams 10 and making the tray 20 located below the two longitudinal beams 10, the tray 20 and the two longitudinal beams 10 can jointly define a battery installation area 101, and the battery installation area 101 can be used to install the battery assembly 30.

[0038] It can be understood that after the battery assembly 30 is installed in the battery installation area 101, the battery assembly 30 is located between the two longitudinal beams 10 and adjacent to the rear ends of the longitudinal beams 10. In this way, when the vehicle has a frontal or side collision, the longitudinal beams 10 can absorb a part of the collision energy first. This can enhance the protection of the battery assembly 30, reduce the risk of damage to the battery assembly 30, and improve the safety and reliability of the vehicle.

[0039] Moreover, different from directly connecting the battery assembly to the longitudinal beam, by providing the tray 20, on the one hand, the tray 20 can protect the battery assembly 30, preventing the intrusion of foreign objects from the outside or the destruction of the structure of the battery assembly 30 by external forces. On the other hand, it can avoid the direct connection between the battery assembly 30 and the longitudinal beam 10, reduce the influence of the heat source around the longitudinal beam 10 on the battery assembly 30, improve the thermal management performance of the battery assembly 30, and thus improve the stability of the battery assembly 30 and even the chassis 100.

[0040] Optionally, heat insulation cotton can be provided on the tray 20, and the battery assembly 30 can be arranged on the heat-insulated surface, thereby further improving the thermal management performance of the battery assembly 30.

[0041] Furthermore, the battery assembly 30 includes a first battery unit 31 and a second battery unit 32. The second battery unit 32 is arranged at intervals above the first battery unit 31, and the upper side of the second battery unit 32 does not protrude above the longitudinal beam 10 in the vertical direction. That is, the battery assembly 30 is designed in layers. In this way, on the premise of preventing the upper surface of the battery assembly 30 from protruding above the upper surface of the longitudinal beam 10 and avoiding interference between the battery assembly 30 and the vehicle body, the space between the two longitudinal beams 10 and below the two longitudinal beams 10 can be fully utilized, which is conducive to increasing the volume of the battery assembly 30 and the capacity of the battery assembly 30, meeting the installation requirements of large-capacity new energy power batteries, and improving the endurance of the vehicle.

[0042] Thus, by providing the tray 20, the tray 20 and the two longitudinal beams 10 jointly define a battery installation area 101. The battery assembly 30 is located within the battery installation area 101, and the battery assembly 30 includes a first battery unit 31 and a second battery unit 32. The second battery unit 32 is arranged at intervals above the first battery unit 31, and the upper side of the second battery unit 32 does not protrude above the longitudinal beam 10 in the vertical direction. In this way, the space below the chassis 100 can be fully utilized, the capacity of the battery assembly 30 can be increased, the installation requirements of large-capacity new energy power batteries can be met, and the endurance of the vehicle can be improved.

[0043] Combined with Figures 1-4 As shown, the front end of the second battery unit 32 protrudes forward relative to the front end of the first battery unit 31, and the rear end of the first battery unit 31 protrudes backward relative to the rear end of the second battery unit 32.

[0044] Specifically, the tray 20 and the battery assembly 30 are arranged at the rear ends of the two longitudinal beams 10, and other components need to be provided in front of the tray 20 and the battery assembly 30. By making the front end of the second battery unit 32 protrude forward relative to the front end of the first battery unit 31, and making the rear end of the first battery unit 31 protrude backward relative to the rear end of the second battery unit 32, that is, the first battery unit 31 and the second battery unit 32 are at least partially staggered in the front-rear direction.

[0045] In this way, while ensuring the respective volumes of the first battery component 31 and the second battery component 32 and the large capacity of the battery assembly 30, it is not only convenient for the heat dissipation of the first battery component 31 and the second battery component 32 respectively, improving the thermal management performance of the battery assembly 30, but also enables the first battery component 31 to avoid the components in front of the battery assembly 30, ensuring the arrangement of other components on the chassis 100 and preventing interference between the battery assembly 30 and other components.

[0046] Furthermore, in combination with Figure 2 and Figure 4 as shown, at least one end of the first battery component 31 in the left-right direction protrudes outward relative to the second battery component 32, and the volume of the first battery component 31 is larger than that of the second battery component 32.

[0047] Specifically, the first battery component 31 is disposed below the second battery component 32. The first battery component 31 is not restricted between the two longitudinal beams 10 in the left-right direction. On the premise of avoiding interference between the second battery component 32 and external components, by making at least one end of the first battery component 31 in the left-right direction protrude outward relative to the second battery component 32, in this way, on the premise of ensuring that the first battery component 31 does not protrude beyond the left-right edges of the chassis 100, the space below the two longitudinal beams 10 can be fully utilized, increasing the size of the first battery component 31 in the left-right direction, increasing the volume of the first battery component 31, making the volume of the first battery component 31 larger than that of the second battery component 32, so as to improve the capacity of the first battery component 31, meet the vehicle's demand for a large-capacity battery, and improve the vehicle's endurance.

[0048] In combination with Figure 1 、 Figure 2 and Figure 4 as shown, the part of the longitudinal beam 10 corresponding to the battery assembly 30 may mainly include a first beam section 11 and a second beam section 12. The first beam section 11 is connected to the front end of the second beam section 12 and is bent upward relative to the second beam section 12. The upper surface of the second battery component 32 includes a first part 321 and a second part 322. The second part 322 extends flatly on the horizontal plane and corresponds to the second beam section 12. The first part 321 is located in front of the second part 322 and protrudes upward relative to the second part 322 and corresponds to the first beam section 11.

[0049] In this way, the upper surface of the second battery component 32 can be adapted to the upper surface of the longitudinal beam 10 corresponding to the battery assembly 30. On the premise of ensuring that the upper surface of the second battery component 32 does not protrude from the upper surface of the longitudinal beam 10 and avoiding interference between the second battery component 32 and the vehicle body, the space between the two longitudinal beams 10 on the chassis 100 can be fully utilized to increase the volume of the second battery component 32, thereby increasing the capacity of the second battery component 32, meeting the vehicle's demand for a large-capacity battery, and improving the vehicle's endurance.

[0050] Combined with Figures 1-4 As shown, the tray 20 mainly includes a bottom plate 21 and a connecting plate 22. The bottom plate 21 and the longitudinal beam 10 are arranged at intervals in the up-down direction. A plurality of connecting plates 22 are provided on both the left and right sides of the bottom plate 21. The connecting plates 22 extend in the up-down direction and are connected to the longitudinal beam 10. The first battery component 31 is arranged on the bottom plate 21. A baffle 23 is provided on the front side of the bottom plate 21. The baffle 23 corresponds to the first battery component 31 in the front-back direction, and the second battery component 32 is spaced from the baffle 23 in the up-down direction.

[0051] Specifically, by making the tray 20 include a bottom plate 21 and a connecting plate 22, arranging the bottom plate 21 and the longitudinal beam 10 at intervals in the up-down direction, and providing a plurality of connecting plates 22 on both the left and right sides of the bottom plate 21, with the connecting plates 22 extending in the up-down direction, the overall structure of the tray 20 can be formed, and the structure of the tray 20 is simple. Only by connecting the connecting plates 22 to the longitudinal beam 10 can the connection between the tray 20 and the longitudinal beam 10 be realized, and the stable setting of the tray 20 on the chassis 100 can be achieved.

[0052] In this way, the chassis 100, the connecting plate 22, and the longitudinal beam 10 can jointly define a battery installation area 101. The bottom plate 21 can carry the second battery component 32 and even the battery assembly 30. The connecting plate 22 can adapt to the size of the battery assembly 30 in the up-down direction, ensuring that the upper surface of the battery assembly 30 does not protrude from the upper surface of the longitudinal beam 10, so that the setting of the battery assembly 30 on the chassis 100 is simpler, more convenient, and more stable and reliable.

[0053] Furthermore, the first battery component 31 is located below the two longitudinal beams 10. During the use of the vehicle, the first battery component 31 is more vulnerable to erosion or damage by foreign objects. By providing a baffle 23 on the front side of the bottom plate 21, making the baffle 23 correspond to the first battery component 31 in the front-back direction, and spacing the second battery component 32 from the baffle 23 in the up-down direction, the baffle 23 can protect the first battery component 31 from structural damage while still allowing other components to be avoided in front of the baffle 23, thereby improving the reliability of the battery assembly 30 and even the chassis 100.

[0054] Combined withFigure 5 As shown, the chassis 100 may further include a rear axle assembly 50. The rear axle assembly 50 may mainly include a rear axle member 51, a drive shaft 52, and leaf spring members 53. The rear axle member 51 extends in the left-right direction and is adapted to be connected to the left and right rear wheels of the vehicle. The drive shaft 52 extends in the front-rear direction, and the rear end of the drive shaft 52 is connected to the rear axle member 51. There are two leaf spring members 53, and the two leaf spring members 53 extend in the front-rear direction and are respectively connected to both ends of the rear axle member 51.

[0055] In this way, the power from the engine or the motor can be transmitted to the rear axle member 51 through the drive shaft 52, and then the rear axle member 51 transmits the power to the left and right rear wheels, thereby ensuring the normal driving of the vehicle and enabling the vehicle to adapt to different movement requirements.

[0056] Moreover, when the vehicle is driving on an uneven road surface, the bumps on the road surface will cause the wheels to bounce up and down. The leaf spring members 53 can absorb and buffer the impact and vibration from the road surface through their own deformation, can make the wheels fit the road surface as much as possible, can reduce the vibration transmitted to the vehicle body, and can improve the riding comfort of the vehicle and the safety of the goods in the vehicle.

[0057] Combined with Figures 1-4 As shown, the chassis 100 may further include a first connecting cross beam 40. The first connecting cross beam 40 extends in the left-right direction and is connected to the two longitudinal beams 10. The first connecting cross beam 40 is spaced above the first battery member 31 and is connected to the rear side of the second battery member 32.

[0058] Specifically, by extending the first connecting cross beam 40 in the left-right direction and connecting the first connecting cross beam 40 to the two longitudinal beams 10, the first connecting cross beam 40 can participate in forming the basic framework of the chassis 100, can improve the structural strength of the chassis 100, and can provide reliable support and mounting points for other components of the vehicle.

[0059] Furthermore, by spacing the first connecting cross beam 40 above the first battery member 31, the first connecting cross beam 40 can provide a mounting point for the first battery member 31. Only by connecting the first connecting cross beam 40 to the rear side of the second battery member 32 can the connection between the second battery member 32 and the first connecting cross beam 40 be achieved. The first connecting cross beam 40 can provide a connecting force for the second battery member 32 at the rear side, improving the stability and reliability of the installation of the second battery member 32 on the chassis 100.

[0060] Combined with Figure 4 and Figure 5 As shown, the left and right ends of the first connecting cross beam 40 respectively protrude outward relative to the two longitudinal beams 10, and the left and right ends of the first connecting cross beam 40 are respectively connected to the rear ends of the two leaf spring members 53.

[0061] Specifically, to ensure the normal operation of the leaf spring member 53 and even the rear axle assembly 50, it is necessary to rotatably connect the front and rear ends of each leaf spring member 53 to the longitudinal beam 10. By protruding the left and right ends of the first connecting cross beam 40 outward relative to the two longitudinal beams 10 respectively, only by connecting the left and right ends of the first connecting cross beam 40 to the rear ends of the two leaf spring members 53 respectively, the connection between the rear ends of the two leaf spring members 53 and the longitudinal beam 10 can be achieved through the first connecting cross beam 40. Thus, on the premise of providing installation points for the battery assembly 30, the first connecting cross beam 40 can provide connection points for the leaf spring member 53, and further enable the first connecting cross beam 40 to integrate multiple functions, which can improve the structural compactness of the chassis 100 and optimize the structural design and layout of the chassis 100.

[0062] Combined with Figures 1-4 As shown, the chassis 100 may further include a second connecting cross beam 60. The first connecting cross beam 40 extends in the left-right direction and is connected to the two longitudinal beams 10, and the second connecting cross beam 60 is connected to the front side of the second battery member 32.

[0063] Specifically, by extending the second connecting cross beam 60 in the left-right direction and connecting the second connecting cross beam 60 to the two longitudinal beams 10, the second connecting cross beam 60 can participate in forming the basic framework of the chassis 100, which can improve the structural strength of the chassis 100 and provide reliable supports and installation points for other components of the vehicle.

[0064] Furthermore, the second connecting cross beam 60 is spaced in front of the second battery member 32. In this way, the second connecting cross beam 60 can provide an installation point for the second battery member 32. Only by connecting the second connecting cross beam 60 to the front side of the second battery member 32, the connection between the second battery member 32 and the second connecting cross beam 60 can be achieved. The second connecting cross beam 60 can provide a connecting force for the second battery member 32 at the front side, improving the stability and reliability of the installation of the second battery member 32 on the chassis 100.

[0065] The second connecting cross beam 60 blocks between the second battery member 32 and the rear axle member 51 in the front-rear direction.

[0066] Specifically, the battery assembly 30 is located in front of the rear axle member 51. In this way, when the vehicle undergoes a frontal or side collision, the rear axle member 51 can also absorb a part of the collision energy first, which can further enhance the protection effect on the battery assembly 30, effectively prevent vehicle accidents caused by damage to the battery assembly 30 due to collision, and further improve the safety and reliability of the vehicle.

[0067] Furthermore, the second connecting crossbeam 60 is blocked between the second battery component 32 and the rear axle component 51 in the front-rear direction, which can optimize the installation position of the second connecting crossbeam 60. This can not only improve the layout compactness of the chassis 100, but also make the rear axle component 51 and the battery assembly 30 relatively independent, facilitating the heat dissipation of the battery assembly 30 and the maintenance and repair of the rear axle component 51 and the battery assembly 30.

[0068] In this way, in the front-rear direction, the second battery component 32 can be restricted between the second connecting crossbeam 60 and the first connecting crossbeam 40. Only by connecting the front and rear ends of the second battery component 32 to the second connecting crossbeam 60 and the first connecting crossbeam 40 respectively, the stable installation of the second battery component 32 on the chassis 100 can be achieved, thus making full use of the structural components of the chassis 100 and improving the structural compactness of the chassis 100.

[0069] The vehicle according to the present invention may mainly include: the above-mentioned chassis 100, which can enable the vehicle to load a battery assembly 30 with a larger capacity, improve the endurance of the vehicle, thereby improving the product competitiveness of the vehicle and enhancing the user experience.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0072] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A chassis, characterized in that: include: A longitudinal beam (10), wherein the longitudinal beam (10) is extended in the front-rear direction and is in two pieces, and the two longitudinal beams (10) are spaced apart in the left-right direction; a tray (20), the tray (20) being arranged at the rear ends of the two longitudinal beams (10), the tray (20) being located below the two longitudinal beams (10) and connected to the two longitudinal beams (10), the tray (20) and the two longitudinal beams (10) jointly defining a battery installation area (101); A battery assembly (30), the battery assembly (30) being located in the battery installation area (101) and comprising a first battery component (31) and a second battery component (32), the second battery component (32) being spaced apart above the first battery component (31), and the upper side of the second battery component (32) not protruding from the longitudinal beam (10) in the up and down direction.

2. The chassis according to claim 1, characterized in that: The front end of the second battery component (32) is arranged to protrude forwardly relative to the front end of the first battery component (31), and the rear end of the first battery component (31) is arranged to protrude backwardly relative to the rear end of the second battery component (32).

3. The chassis according to claim 2, characterized in that: At least one end of the first battery component (31) in the left-right direction is arranged to protrude outward relative to the second battery component (32), and the volume of the first battery component (31) is greater than the volume of the second battery component (32).

4. The chassis according to claim 1, characterized in that: The portion of the longitudinal beam (10) corresponding to the battery assembly (30) comprises a first beam section (11) and a second beam section (12); the first beam section (11) is connected to the front end of the second beam section (12) and is bent upward relative to the second beam section (12); the upper surface of the second battery component (32) comprises a first portion (321) and a second portion (322); the second portion (322) is flatly extended on a horizontal plane and corresponds to the second beam section (12); the first portion (321) is located at the front side of the second portion (322); the first portion (321) is protruding upward relative to the second portion (322) and corresponds to the first beam section (11).

5. The chassis according to claim 1, characterized in that: The tray (20) comprises a bottom plate (21) and a connecting plate (22), the bottom plate (21) and the longitudinal beam (10) are arranged at intervals in the up-down direction, a plurality of connecting plates (22) are arranged on both the left and right sides of the bottom plate (21), the connecting plates (22) are extended in the up-down direction and are connected to the longitudinal beam (10), the first battery component (31) is arranged on the bottom plate (21), a baffle (23) is arranged on the front side of the bottom plate (21), the baffle (23) corresponds to the first battery component (31) in the front-back direction, and the second battery component (32) and the baffle (23) are spaced from each other in the up-down direction.

6. The chassis according to claim 1, characterized in that: It also includes a first connecting crossbeam (40), which is extended in the left-right direction and connected to the two longitudinal beams (10), and the first connecting crossbeam (40) is arranged above the first battery component (31) at intervals and connected to the rear side of the second battery component (32).

7. The chassis according to claim 6, characterized in that The vehicle further comprises a rear axle assembly (50), wherein the rear axle assembly (50) comprises a rear axle member (51), a transmission shaft (52) and a leaf spring member (53); the rear axle member (51) is extended in the left-right direction and is suitable for being connected to the left and right rear wheels of the vehicle; the transmission shaft (52) is extended in the front-back direction; the rear end of the transmission shaft (52) is connected to the rear axle member (51); there are two leaf spring members (53); the two leaf spring members (53) are extended in the front-back direction and are respectively connected to the two ends of the rear axle member (51); the left and right ends of the first connecting cross beam (40) are respectively protruding outward relative to the two longitudinal beams (10); the left and right ends of the first connecting cross beam (40) are respectively connected to the rear ends of the two leaf spring members (53).

8. The chassis according to claim 7, characterized in that It also includes a second connecting crossbeam (60), wherein the first connecting crossbeam (40) is extended in the left-right direction and connected to the two longitudinal beams (10), and the second connecting crossbeam (60) is connected to the front side of the second battery unit (32).

9. The chassis according to claim 8, characterized in that The second connecting cross beam (60) is blocked between the second battery component (32) and the rear bridge component (51) in the front-rear direction.

10. A vehicle, characterized in that: A chassis (100) comprising any one of claims 1-9.

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