Chassis, vehicle body structure, and vehicle

Abstract

Disclosed are a chassis, a vehicle body structure, and a vehicle. The chassis comprises a frame (100), a power battery (200), and a water tank assembly (400). The frame comprises a front frame section (110), a middle frame section (120), and a rear frame section (130). The power battery and the water tank assembly are arranged side by side on the middle frame section, so that the center of gravity of the chassis shifts toward the center of the chassis, thereby improving the stability of the chassis and reducing the space occupation of the front frame section and the rear frame section, making the structure of the chassis more compact, and thus increasing the space utilization rate of the chassis.

Description

Chassis, body structure and vehicle Cross-reference to related applications

[0001] This application claims priority to Chinese Patent Application No. 202421519217.9, filed on June 28, 2024, entitled “Chassis and Vehicle,” Chinese Patent Application No. 202410857192.1, filed on June 28, 2024, entitled “Chassis, Body Structure and Vehicle,” and Chinese Patent Application No. 202421509554.X, filed on June 28, 2024, entitled “Frame, Chassis and Vehicle,” the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of automobiles, and in particular to a chassis, a body structure and a vehicle. BACKGROUND

[0003] In order to respond to global climate warming and reduce carbon emissions, new energy vehicles powered by power batteries have emerged. A new energy vehicle chassis usually has a plurality of components such as power batteries and water tank assemblies arranged dispersedly, which affects the space utilization of the chassis. SUMMARY

[0004] Embodiments of the present application provide a chassis, a body structure and a vehicle, which can improve the space utilization of the chassis.

[0005] In a first aspect, embodiments of the present application provide a chassis, comprising a frame, a power battery and a water tank assembly, the frame comprising a front section frame, a middle section frame and a rear section frame; the power battery is arranged on the middle section frame; the water tank assembly is used for containing domestic water, and the water tank assembly is arranged on the middle section frame and arranged side by side with the power battery.

[0006] In some embodiments, the middle section frame comprises a middle section frame body, the middle section frame body comprises two first longitudinal beams spaced apart along a width direction of the chassis and two first transverse beams spaced apart along a length direction of the chassis, the first transverse beams are located between the two first longitudinal beams and are connected with the two first longitudinal beams respectively, and the two first longitudinal beams and the two first transverse beams jointly define a containing space, at least part of the power battery is located in the containing space and is connected with at least one of the first longitudinal beams and the first transverse beams.

[0007] In some embodiments, the middle section frame comprises a middle section frame body and a first partition beam arranged on the middle section frame body, the middle section frame body defines a containing space, the containing space is divided into a first region and a second region by the first partition beam, the power battery is arranged in the first region, the water tank assembly is arranged in the second region, and the power battery and / or the water tank assembly are connected to the first partition beam.

[0008] In some embodiments, the water tank assembly is connected with the first partition beam, the water tank assembly comprises a first water tank for containing fresh water and a second water tank for containing waste water, the first water tank and the second water tank are arranged side by side along the length direction of the first partition beam, and the first water tank and / or the second water tank is / are connected with the first partition beam.

[0009] In some embodiments, the middle section frame further comprises a second partition beam connected with the middle section frame body and the first partition beam respectively, the second region is divided into a first sub-region and a second sub-region by the second partition beam, the first water tank is located in the first sub-region, the second water tank is located in the second sub-region, and the first water tank and / or the second water tank is / are connected with the second partition beam.

[0010] In some embodiments, the first partition beam and / or the second partition beam is / are detachably connected with the middle section frame body.

[0011] In some embodiments, the first region and the second region are distributed along the length direction of the chassis, the first region is arranged close to the front section frame, and the second region is arranged close to the rear section frame.

[0012] In some embodiments, the chassis further comprises a thermal management module arranged in the front section frame and used at least for heat exchange with the power battery, and / or the chassis further comprises a range extending module arranged in the rear section frame and connected with the power battery.

[0013] In some embodiments, the thermal management module comprises a compressor, a heat pump and a first radiator, and the compressor, the heat pump and the first radiator are arranged in the front section frame respectively.

[0014] In some embodiments, the range extending module comprises a range extender, a fuel tank, an air intake unit and an exhaust unit, the air intake unit and the exhaust unit are in communication with the range extender respectively, the air intake unit and the range extender are arranged side by side along a first direction, the range extender and the fuel tank are arranged side by side along a second direction, and the first direction and the second direction are arranged intersectingly.

[0015] In some embodiments, the air intake unit and the exhaust unit are respectively located on opposite sides of the range extender along the first direction.

[0016] In some embodiments, the exhaust unit comprises an exhaust silencer, the exhaust silencer is located on one side of the fuel tank along the first direction, and the exhaust silencer and the fuel tank are distributed staggeredly along a third direction, and the third direction and the first direction are arranged intersectingly.

[0017] In some embodiments, the rear section frame comprises two second longitudinal beams spaced apart in the second direction, and a second cross beam and a third cross beam spaced apart in the first direction, the second cross beam is located at one side of the third cross beam close to the middle section frame, the second cross beam and the third cross beam are connected with the two second longitudinal beams, the range extending module is arranged in a space defined by the two second longitudinal beams, the second cross beam and the third cross beam, and is connected with at least one of the two second longitudinal beams, the second cross beam and the third cross beam.

[0018] In some embodiments, the middle section frame comprises a first cross beam, the rear section frame further comprises two third longitudinal beams spaced apart in the second direction, the first cross beam and the second cross beam are spaced apart in the first direction, the third longitudinal beams are connected between the first cross beam and the second cross beam, the first cross beam and the third longitudinal beams are respectively connected with the second longitudinal beams, the chassis further comprises a first motor, the first motor is arranged in a space defined by the first cross beam, the second cross beam and the two third longitudinal beams, and is connected with at least one of the first cross beam, the second cross beam and the two third longitudinal beams; and / or, the chassis further comprises a second motor, the second motor is arranged in the front section frame.

[0019] In some embodiments, the frame comprises a front section region, a middle section region and a rear section region distributed in sequence along the length direction of the frame, the frame is applicable to both pure electric vehicles and range extending hybrid electric vehicles, in the application mode of the pure electric vehicle, at least part of the rear section region can be used as a storage space or a passenger space; in the application mode of the range extending hybrid electric vehicle, the rear section region can be used to assemble a range extending module.

[0020] In some embodiments, the frame comprises a frame body, in the application mode of the range extending hybrid electric vehicle, the frame further comprises a range extending mounting structure located in the rear section region, the range extending mounting structure comprises a mounting beam connected with the frame body, a projection of the mounting beam on the frame body along a third direction extends along a first direction, the rear section region is divided by the mounting beam into a first sub region and a second sub region distributed along a second direction, the first sub region is used to arrange a range extender of the range extending module, and the second sub region is used to arrange a fuel tank of the range extending module, the first direction, the second direction and the third direction are arranged in pairs of intersection.

[0021] In some embodiments, the rear section region is arranged in the rear section frame.

[0022] In some embodiments, the chassis further comprises a first suspension assembly and a second suspension assembly, at least one of the first suspension assembly and the second suspension assembly comprises a leaf spring and two suspensions.

[0023] In a second aspect, the embodiments of the present application provide a vehicle body structure comprising the chassis of any one of the above.

[0024] In a third aspect, the embodiments of the present application provide a vehicle comprising the chassis of any one of the above.

[0025] In some embodiments, the vehicle further comprises a floor arranged on the chassis, the power battery comprises a battery box and a battery module, the battery box comprises a bottom plate and a side plate arranged around the circumference of the bottom plate, the bottom plate is arranged opposite to the floor, and the side plate is connected to the floor, the floor, the side plate and the bottom plate form an accommodating cavity, and the battery module is arranged in the accommodating cavity.

[0026] In some embodiments, the vehicle further comprises an upper body, and the upper body is detachably connected to the chassis.

[0027] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0028] The features, advantages, and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0029] FIG. 1 is a top view of a chassis according to some embodiments of the present application;

[0030] FIG. 2 is an axonometric view of the chassis according to some embodiments of the present application;

[0031] FIG. 3 is a top view of a middle frame according to some embodiments of the present application;

[0032] FIG. 4 is another top view of the chassis according to some embodiments of the present application;

[0033] FIG. 5 is another axonometric view of the chassis according to some embodiments of the present application;

[0034] FIG. 6 is a structural schematic view of a rear frame according to some embodiments of the present application;

[0035] FIG. 7 is a further top view of the chassis according to some embodiments of the present application;

[0036] FIG. 8 is a top view of a frame according to some embodiments of the present application;

[0037] FIG. 9 is another top view of the frame according to some embodiments of the present application;

[0038] FIG. 10 is a further top view of the chassis according to some embodiments of the present application;

[0039] FIG. 11 is an enlarged view of a partial portion of the chassis according to some embodiments of the present application;

[0040] FIG. 12 is a further axonometric view of the chassis according to some embodiments of the present application.

[0041] REFERENCE SIGNS:

[0042] Chassis 10; frame 100; front section frame 110; middle section frame 120; first longitudinal beam 121; first cross beam 122; containing space 123; first partition beam 124; first area 125; second area 126; second partition beam 127; rear section frame 130; second longitudinal beam 131; second cross beam 132; third cross beam 133; mounting beam 134; third longitudinal beam 135; front section area 140, middle section area 150; rear section area 160; frame main body 170; power battery 200; range extending module 300; range extender 310; fuel tank 320; exhaust unit 330; exhaust duct 331; three-way catalyst 332; exhaust silencer 335; intake unit 340; intake duct 341; air filter 342; carbon canister 350; expansion water jug 360; water tank assembly 400; first water tank 410; second water tank 420; first suspension assembly 510; leaf spring 511; suspension 512; second suspension assembly 520; second radiator 600; floor 700; second sub-floor 710; guard plate 800; first motor 900; first direction X; second direction Y; third direction Z.

[0043] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as would be understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing the particular embodiments only and is not intended to be limiting of the present application; the use of the terms "including," "comprising," "having" and "with" used in the detailed description and the claims herein and the above detailed description of the drawings, are intended to be inclusive and are to be construed as specifying the presence of stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, and / or components.

[0046] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0047] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, nor are they necessarily all mutually exclusive or alternative embodiments.

[0048] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical terms“mounting”,“connecting”,“connecting”,“fixing” and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0049] In the description of the embodiments of the present application, the term“a plurality of” refers to two or more (including two), and similarly, the term“a plurality of groups” refers to two or more groups (including two groups), and the term“a plurality of pieces” refers to two or more pieces (including two pieces).

[0050] In the description of the embodiments of the present application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0051] Referring to FIG. 1, in a first aspect, the embodiments of the present application propose a chassis 10, which comprises a vehicle frame 100, a power battery 200 and a water tank assembly 400. The vehicle frame 100 comprises a front section frame 110, a middle section frame 120 and a rear section frame 130. The power battery 200 is arranged on the middle section frame 120. The water tank assembly 400 is used to contain domestic water, and is arranged on the middle section frame 120 and arranged side by side with the power battery 200.

[0052] The chassis 10 proposed in the embodiments of the present application can be a motor home chassis, or a chassis 10 of other types of vehicles.

[0053] Specifically, the front frame 110, the middle frame 120 and the rear frame 130 are distributed along the length direction of the chassis 10, the front frame 110 is arranged close to the front end of the chassis 10, the rear frame 130 is arranged close to the rear end of the chassis 10, and the middle frame 120 is located between the front frame 110 and the rear frame 130 and connected with the front frame 110 and the rear frame 130 respectively. In the chassis 10, the power battery 200 serves as the whole vehicle power source, and the water tank assembly 400 is used to contain domestic water, and the weight of the two accounts for a large proportion in the overall weight of the chassis 10, therefore, in the present application, the power battery 200 and the water tank assembly 400 are arranged on the middle frame 120, which can make the gravity center of the chassis 10 close to the center of the chassis 10, and improve the stability and safety of the chassis 10.

[0054] It should be noted that the water tank assembly 400 is used to contain domestic water, and the domestic water can be of various types, for example, the domestic water can include clean water to be used and / or used waste water.

[0055] The embodiment of the present application provides a chassis 10, which comprises a frame 100, a power battery 200 and a water tank assembly 400, the frame 100 comprises a front frame 110, a middle frame 120 and a rear frame 130, and the water tank assembly 400 is used to contain domestic water and is arranged side by side with the power battery 200 on the middle frame 120, which can reduce the space occupation of the front frame 110 and the rear frame 130, make the structure of the chassis 10 more compact, and thus improve the space utilization of the chassis 10.

[0056] In the embodiment of the present application, the power battery 200 and the water tank assembly 400 can be arranged side by side in any direction, for example, the power battery 200 can be arranged side by side with the water tank assembly 400 along the length direction of the chassis 10, or along the height direction of the chassis 10.

[0057] Please refer to FIG. 2, in some embodiments, the middle frame 120 comprises a middle frame body, the middle frame body comprises two first longitudinal beams 121 spaced apart along the width direction of the chassis 10 and two first transverse beams 122 spaced apart along the length direction of the chassis 10, the first transverse beams 122 are located between the two first longitudinal beams 121 and connected with the two first longitudinal beams 121 respectively, and the two first longitudinal beams 121 and the two first transverse beams 122 jointly define a containing space 123, at least part of the power battery 200 is located in the containing space 123 and connected with at least one of the first longitudinal beams 121 and the first transverse beams 122.

[0058] In the embodiments of the present application, the "middle frame body" is the same structure as the "frame body" in the priority document 202421519217.9; the "first longitudinal beam 121" is the same structure as the "longitudinal beam" in the priority document 202421519217.9, the "longitudinal beam" in the priority document 202421509554.X, and the "third longitudinal beam" in the priority document 202410857192.1; and the "first cross beam 122" is the same structure as the "cross beam" in the priority document 202421519217.9, the "cross beam" in the priority document 202421509554.X, and the "third cross beam" in the priority document 202410857192.1.

[0059] In these embodiments, the two first longitudinal beams 121 are spaced apart along the width direction of the chassis 10, each first longitudinal beam 121 can extend substantially along the length direction of the chassis 10, the two first cross beams 122 are spaced apart along the length direction of the chassis 10, each first cross beam 122 can extend substantially along the width direction of the chassis 10, the two first cross beams 122 are located between the two first longitudinal beams 121, and the two ends of each first cross beam 122 can be connected to the two first longitudinal beams 121 respectively, so that the two first cross beams 122 and the two first longitudinal beams 121 can enclose a containing space 123, and at least part of the power battery 200 is located in the containing space 123. Compared with the power battery 200 being suspended and arranged below the middle frame 120, the ground clearance of the power battery 200 can be increased, the safety performance can be improved, or in the case that the ground clearance of the power battery 200 is certain, the height of the chassis 10 can be reduced, so that the size of the passenger cabin located above the middle frame 120 in the height direction of the chassis 10 is increased, thereby improving the comfort of the vehicle.

[0060] It should be noted that when at least part of the power battery 200 is located in the containing space 123, the two first cross beams 122 can be located on the two sides of the power battery 200 along the length direction of the chassis 10 respectively, and the two first longitudinal beams 121 can be located on the two sides of the power battery 200 along the width direction of the chassis 10 respectively. At this time, the power battery 200 can be connected to at least one of the two first cross beams 122 and the two first longitudinal beams 121.

[0061] In some optional embodiments, the power battery 200 can include a battery module and a battery box, the battery box can include a top wall and a bottom wall, the top wall and the bottom wall are connected with the two first transverse beams 122 and the two first longitudinal beams 121 respectively, and the top wall, the bottom wall, the two first transverse beams 122 and the two first longitudinal beams 121 can jointly enclose a space for accommodating the battery module, so that the side wall does not need to be arranged in the battery box, the volume of the power battery 200 can be reduced on the basis of ensuring the endurance of the battery module, the power battery 200 can reduce the space occupation of the power battery 200 to the middle frame 120, or the space for accommodating the battery module can be increased, so that the endurance of the power battery 200 is enhanced.

[0062] Please continue to refer to FIG. 1 and FIG. 2, in some embodiments, the middle frame 120 includes a middle frame body and a first partition beam 124 arranged on the middle frame body, the middle frame body defines an accommodation space 123, the accommodation space 123 is divided into a first area 125 and a second area 126 by the first partition beam 124, the power battery 200 is arranged in the first area 125, and the water tank assembly 400 is arranged in the second area 126, the power battery 200 and / or the water tank assembly 400 are connected to the first partition beam 124.

[0063] In the embodiments of the present application, the first partition beam 124 is the same structure as the fourth transverse beam in the priority document 202410857192.1 and the partition beam in the priority document 202421509554.X.

[0064] Specifically, the middle frame body includes two first longitudinal beams 121 distributed at intervals along the width direction of the chassis 10 and two first transverse beams 122 distributed at intervals along the length direction of the chassis 10, so as to define the accommodation space 123 by the two first transverse beams 122 and the two first longitudinal beams 121. The two ends of the first partition beam 124 can be connected with the two first transverse beams 122 respectively or connected with the two first longitudinal beams 121 respectively, when the two ends of the first partition beam 124 are connected with the two first transverse beams 122 respectively, the first partition beam 124 divides the accommodation space 123 into the first area 125 and the second area 126 distributed along the width direction of the chassis 10, when the two ends of the first partition beam 124 are connected with the two first longitudinal beams 121 respectively, the first partition beam 124 divides the accommodation space 123 into the first area 125 and the second area 126 distributed along the length direction of the chassis 10. When the power battery 200 is arranged in the first area 125 and the water tank assembly 400 is arranged in the second area 126, the power battery 200 and the water tank assembly 400 can be connected to the first transverse beam 122 and / or the first longitudinal beam 121. Meanwhile, the power battery 200 and / or the water tank assembly 400 can be further connected with the first partition beam 124, so as to improve the stability of the power battery 200 and / or the water tank assembly 400.

[0065] Referring to FIG. 3, in some embodiments, the water tank assembly 400 is connected with the first partition beam 124, the water tank assembly 400 comprises a first water tank 410 for containing clean water and a second water tank 420 for containing waste water, the first water tank 410 and the second water tank 420 are arranged side by side along the length direction of the first partition beam 124, and the first water tank 410 and / or the second water tank 420 is / are connected with the first partition beam 124.

[0066] In these embodiments, the water tank assembly 400 is connected with the first partition beam 124, the water tank assembly 400 comprises a first water tank 410 for containing clean water and a second water tank 420 for containing waste water, which can facilitate the passengers to use water and at the same time can avoid the waste water from polluting the environment, thereby improving the practicability of the chassis 10. The first water tank 410 and the second water tank 420 are arranged side by side along the length direction of the first partition beam 124, and the first water tank 410 and / or the second water tank 420 can be connected with the first partition beam 124, thereby improving the stability of the first water tank 410 and / or the second water tank 420.

[0067] In the embodiments of the present application, the first water tank 410 and / or the second water tank 420 can also be connected with at least one of the first cross beam 122 and the first longitudinal beam 121, so as to make the first water tank 410 and / or the second water tank 420 stable in assembly.

[0068] Please continue to refer to FIG. 3, in some embodiments, the middle frame 120 further comprises a second partition beam 127, the second partition beam 127 is connected with the middle frame body and the first partition beam 124 respectively, the second area 126 is divided into a first sub-area and a second sub-area by the second partition beam 127, the first water tank 410 is located in the first sub-area, the second water tank 420 is located in the second sub-area, and the first water tank 410 and / or the second water tank 420 is / are connected with the second partition beam 127.

[0069] In the embodiments, the second partition beam 127 is connected with the middle frame body and the first partition beam 124 respectively, and when the first partition beam 124 is connected with the two first transverse beams 122 respectively to partition the accommodation space 123, the two ends of the second partition beam 127 can be connected with the first partition beam 124 and one first longitudinal beam 121 respectively, and when the first partition beam 124 is connected with the two first longitudinal beams 121 respectively to partition the accommodation space 123, the two ends of the second partition beam 127 can be connected with the first partition beam 124 and one first transverse beam 122 respectively. The second region 126 is partitioned into a first sub-region and a second sub-region by the second partition beam 127, and the first sub-region and the second sub-region are distributed along the length direction of the first partition beam 124. By arranging the first water tank 410 in the first sub-region and the second water tank 420 in the second sub-region, the first water tank 410 and / or the second water tank 420 are further connected to the second partition beam 127, so as to further improve the stability of the first water tank 410 and / or the second water tank 420.

[0070] In some embodiments, the first partition beam 124 and / or the second partition beam 127 is detachably connected with the middle frame body, so that the various regions of the middle frame 120 can be reasonably adjusted according to actual needs, and the application range of the chassis 10 is improved.

[0071] For example, by disassembling and adjusting the position of the first partition beam 124, the sizes of the first region 125 and the second region 126 can be adjusted, so that the first region 125 can be used to accommodate power batteries 200 of a corresponding capacity, and the second region 126 can be used to accommodate water tank assemblies 400 of a corresponding capacity. For example, when the vehicle has a large capacity demand for the power batteries 200, the size of the first region 125 can be increased and the size of the second region 126 can be reduced, so that the chassis 10 can be provided with power batteries 200 of a larger capacity.

[0072] In some embodiments, the first region 125 and the second region 126 are distributed along the length direction of the chassis 10, the first region 125 is arranged close to the front frame 110, and the second region 126 is arranged close to the rear frame 130, so that the power batteries 200 and the water tank assemblies 400 are distributed in sequence along the length direction of the chassis 10, and the power batteries 200 are arranged close to the front frame 110 and the water tank assemblies 400 are arranged close to the rear frame 130, so that the positions of the power batteries 200 and the water tank assemblies 400 are reasonably arranged, the space utilization of the chassis 10 is more reasonable, the weight distribution of the chassis 10 is more uniform, and the risk of overturning of the chassis 10 is reduced, and the safety performance is improved.

[0073] The first region 125 and the second region 126 are distributed along the length direction of the chassis 10, and the two ends of the first partition beam 124 are connected with the two first longitudinal beams 121 respectively, and the first partition beam 124 is arranged along the length direction of the chassis 10 and spaced apart from the two first transverse beams 122.

[0074] Referring to FIG. 4, in some embodiments, the chassis 10 further comprises a thermal management module arranged in the front frame 110 and used at least for heat exchange with the power battery 200; and / or the chassis 10 further comprises a range extending module 300 arranged in the rear frame 130 and connected with the power battery 200.

[0075] The thermal management module arranged in the front frame 110 can facilitate heat exchange with the power battery 200.

[0076] The range extending module 300 is used for supplying power for the whole vehicle driving system or charging the power battery 200, which helps to improve the endurance of the vehicle and prolong the endurance mileage of the vehicle. When the range extending module 300 is arranged on the chassis 10, the chassis 10 is a chassis 10 of a range extending hybrid electric vehicle.

[0077] In some embodiments, the thermal management module is arranged in the front frame 110, the power battery 200 and the water tank assembly 400 are arranged in the middle frame 120, and the range extending module 300 is arranged in the rear frame 130, so that the weight distribution of the chassis 10 is as uniform as possible, the space utilization is improved, and the mileage anxiety problem of the vehicle is solved.

[0078] In some embodiments, the thermal management module comprises a compressor, a heat pump and a first radiator, and the compressor, the heat pump and the first radiator are arranged in the front frame 110 respectively, so that the space utilization of the front frame 110 can be improved by reasonably arranging the positions of the components in the thermal management module.

[0079] Referring to FIG. 4 and FIG. 5, in some embodiments, the range extending module 300 comprises a range extender 310, an oil tank 320, an air intake unit 340 and an exhaust unit 330, the air intake unit 340 and the exhaust unit 330 are communicated with the range extender 310 respectively, the air intake unit 340 and the range extender 310 are arranged side by side along a first direction X, the range extender 310 and the oil tank 320 are arranged side by side along a second direction Y, and the first direction X and the second direction Y are arranged intersectingly.

[0080] The first direction X and the second direction Y are two intersecting directions, preferably the first direction X and the second direction Y are two perpendicular directions, for example, the first direction X can be the length direction of the chassis 10, and the second direction Y can be the width direction of the chassis 10.

[0081] The range extending module 300 can include a range extender 310 and an oil tank 320, the range extender 310 can include an engine, a generator and a generator controller, the range extending module 300 is electrically connected with the power battery 200, during the operation of the range extending module 300, the power battery 200 can first supply power to the generator of the range extender 310, so that the generator is operated and drives the engine to start, and then the engine supplies power to the vehicle driving system or charges the power battery 200, thereby helping to improve the endurance of the vehicle and prolong the endurance mileage of the vehicle.

[0082] The range extending module 300 further includes an air intake unit 340, which can communicate with the air inlet of the engine to deliver air to the inside of the engine. The range extending module 300 further includes an exhaust unit 330, which communicates with the exhaust port of the engine and can exhaust the exhaust gas generated during the operation of the engine.

[0083] In the related art, the exhaust pipe of the exhaust unit 330 of the vehicle usually extends to the rear end of the vehicle and exhausts at the rear end of the vehicle, thereby causing the exhaust pipe of the exhaust unit 330 to be relatively long and occupy a relatively large space on the chassis 10.

[0084] To at least partially solve the above problems, the range extending module 300 is integrated in the rear section frame 130 in the embodiments of the present application. Compared with arranging the range extender 310 and other components in the range extending module 300 in the front section frame 110 or the middle section frame 120, the exhaust pipe 331 of the exhaust unit 330 can directly exhaust to the external environment at the rear section frame 130, without extending from the front section frame 110 or the middle section frame 120 to the rear section frame 130 for exhaust, thereby shortening the length of the exhaust pipe in the exhaust unit 330, reducing the volume of the range extending module 300 and the space occupied by the range extending module 300 on the chassis 10, and improving the space utilization of the chassis 10.

[0085] In addition, in the range extending module 300, the air intake unit 340 and the range extender 310 are arranged side by side along the first direction X, and the range extender 310 and the oil tank 320 are arranged side by side along the second direction Y, so that the space of the rear section frame 130 can be reasonably utilized and the space utilization of the rear section frame 130 and the chassis 10 can be improved.

[0086] In the embodiments of the present application, the range extending module 300 is integrated in the rear section frame 130, therefore, the front section frame 110 or the middle section frame 120 does not need to arrange the range extender 310 and other components, and the size of the front section frame 110 or the middle section frame 120 can be correspondingly reduced, which helps to improve the structural compactness between the components arranged in the front section frame 110 or the middle section frame 120.

[0087] Exemplarily, when the range extending module 300 is integrated on the rear frame 130, the distance from the wheel center of the front wheel of the front frame 110 to the front end of the chassis 10 can be shortened to a certain extent, and the distance from the wheel center of the front wheel to the driver's foot pedal can also be shortened.

[0088] In the present application, the side-by-side arrangement of the air intake unit 340 and the range extender 310 along the first direction X means that the air intake unit 340 and the range extender 310 are arranged side by side along the first direction X, and is not limited to a complete side-by-side arrangement, that is, the orthogonal projection of the air intake unit 340 on the rear frame 130 along the first direction X and the orthogonal projection of the range extender 310 on the rear frame 130 along the first direction X can be partially overlapped or completely coincided. The side-by-side arrangement of the range extender 310 and the fuel tank 320 along the second direction Y means that the range extender 310 and the fuel tank 320 are arranged side by side along the second direction Y, and is not limited to a complete side-by-side arrangement, that is, the orthogonal projection of the fuel tank 320 on the rear frame 130 along the second direction Y and the orthogonal projection of the range extender 310 on the rear frame 130 along the second direction Y can be partially overlapped or completely coincided.

[0089] In some optional embodiments, the range extender 310 can be suspendedly mounted on the rear frame 130, and the number of suspensions can be multiple. Some suspensions can be arranged on at least one side of the range extender 310 along the second direction Y to connect the range extender 310 and the rear frame 130, and some suspensions can be arranged on at least one side of the range extender 310 along the third direction Z to connect the range extender 310 and the rear frame 130, thereby improving the mounting reliability of the range extender 310. Exemplarily, when the range extender 310 is connected to the rear frame 130 through suspensions on at least one side along the second direction Y, the suspensions can be connected to the longitudinal beams of the rear frame 130, and when the range extender 310 is connected to the rear frame 130 through suspensions on at least one side along the third direction Z, the suspensions can be connected to the transverse beams of the rear frame 130. It should be noted that the third direction Z of the present application can be a direction perpendicular to the first direction X and the second direction Y, which can be the height direction of the chassis 10.

[0090] Please continue to refer to FIG. 4 and FIG. 5, in some embodiments, the air intake unit 340 and the exhaust unit 330 are respectively located on opposite sides of the range extender 310 along the first direction X.

[0091] In these embodiments, the air intake unit 340 and the exhaust unit 330 are respectively located on the two sides of the range extender 310 along the first direction X, which can avoid occupying the side space of the range extender 310 in other directions, so that the side of the range extender 310 in other directions has sufficient space for other structures.

[0092] In the embodiments of the present application, the air intake unit 340 and the air exhaust unit 330 are located on opposite sides of the range extender 310 along the first direction X, and are not limited to being completely arranged on the two sides of the range extender 310 along the second direction Y. Instead, most of the components of the air intake unit 340 and the air exhaust unit 330 can be arranged on the two sides of the range extender 310 along the second direction Y, and a small number of components can also extend to other areas.

[0093] Further, the air intake unit 340 can be located on one side of the range extender 310 along the first direction X towards the front frame 110, and the air exhaust unit 330 is located on the side of the range extender 310 along the first direction X away from the front frame 110, and the air exhaust unit 330 is arranged close to the rear end of the chassis 10, which facilitates exhaust and helps to further shorten the length of the pipeline in the air exhaust unit 330.

[0094] Referring to FIG. 6, in some embodiments, the air exhaust unit 330 includes an exhaust silencer 335, which is located on one side of the oil tank 320 along the first direction X and is distributed staggered with the oil tank 320 along the third direction Z, which is arranged intersecting with the first direction X.

[0095] In these embodiments, the exhaust silencer 335 can reduce the noise of exhaust gas in the engine. The exhaust silencer 335 is located on one side of the oil tank 320 along the first direction X and is distributed staggered with the oil tank 320 along the third direction Z, so as to reasonably arrange the position of the exhaust silencer 335 and improve the space utilization of the chassis 10.

[0096] Alternatively, the exhaust silencer 335 can be located below the rear of the oil tank 320, which can avoid the exhaust silencer 335 occupying the side space of the range extender 310 and the oil tank 320 along the first direction X, the second direction Y and the third direction Z, so as to further improve the space utilization of the chassis 10.

[0097] Referring to FIG. 6, in some embodiments, the rear frame 130 includes two second longitudinal beams 131 arranged spaced apart along the second direction Y and a second transverse beam 132 and a third transverse beam 133 arranged spaced apart along the first direction X, the second transverse beam 132 is located on the side of the third transverse beam 133 close to the middle frame 120, the second transverse beam 132 and the third transverse beam 133 are connected with the two second longitudinal beams 131, the range extender module 300 is arranged in the space defined by the two second longitudinal beams 131, the second transverse beam 132 and the third transverse beam 133, and is connected with at least one of the two second longitudinal beams 131, the second transverse beam 132 and the third transverse beam 133.

[0098] In the embodiments of the present application, the second longitudinal beam 131 is the same structure as the first longitudinal beam in the priority document 202410857192.1, the second transverse beam 132 is the same structure as the first transverse beam in the priority document 202410857192.1, and the third transverse beam 133 is the same structure as the second transverse beam in the priority document 202410857192.1.

[0099] The second longitudinal beam 131 can extend along the first direction X, two second longitudinal beams 131 are arranged at intervals along the second direction Y, the second transverse beam 132 and the third transverse beam 133 can extend along the second direction Y, and the two ends of the second transverse beam 132 can be connected with the two second longitudinal beams 131 respectively, and the two ends of the third transverse beam 133 can be connected with the two second longitudinal beams 131 respectively.

[0100] In these embodiments, the rear frame 130 is composed of two second longitudinal beams 131, a second transverse beam 132 and a third transverse beam 133, the range extending module 300 is arranged in the space defined by the two second longitudinal beams 131, the second transverse beam 132 and the third transverse beam 133, and is connected with at least one of the two second longitudinal beams 131, the second transverse beam 132 and the third transverse beam 133, so that the structure of the rear frame 130 can be simplified on the basis of ensuring the reliability of the support of the rear frame 130 to the range extending module 300.

[0101] In some optional embodiments, a hollow region is formed between at least one of the range extender 310 and the oil tank 320 and the third transverse beam 133, and when the vehicle is rear-ended or is subjected to a collision from the rear, the deformation of the third transverse beam 133 can be reduced, and the risk of the third transverse beam 133 extruding the range extender 310 and / or the oil tank 320 to cause a safety accident can be reduced.

[0102] Please continue to refer to FIG. 6, in some embodiments, the chassis 10 further comprises a second radiator 600, which can be used for radiating the space corresponding to the rear frame 130.

[0103] The range extending module 300 is arranged in the rear frame 130, and during the movement of the range extending module 300, the range extender 310 and the exhaust unit 330 and other components of the range extending module 300 will generate a large amount of heat energy, resulting in a high temperature in the cabin in the rear frame 130 for accommodating the range extending module 300.

[0104] Therefore, in these embodiments, by arranging the second radiator 600, the space corresponding to the rear frame 130 is radiated by the second radiator 600, which is conducive to improving the safety performance of the chassis 10.

[0105] In some optional embodiments, the second heat sink 600 can be a heat dissipation fan, or can be other structures capable of dissipating heat, and the present embodiment is not limited thereto.

[0106] Please continue to refer to FIG. 6. Optionally, the rear frame 130 further comprises a mounting beam 134, both ends of the mounting beam 134 are connected with the second cross beam 132 and the third cross beam 133 respectively, and the mounting beam 134 is located between the range extender 310 and the oil tank 320. The range extender 310 is connected with the mounting beam 134, so as to improve the stability of the range extender 310.

[0107] Optionally, the projection of the mounting beam 134 on the chassis 10 along the third direction Z can extend along the first direction X.

[0108] The shape of the mounting beam 134 can be various, for example, the mounting beam 134 can be a straight rod extending along the first direction X, or the mounting beam 134 can also be an irregular shape extending along the first direction X.

[0109] In some optional embodiments, the range extender 310 can be directly connected with the mounting beam 134, or can be indirectly mounted on the mounting beam 134 through a special suspension or other mounting structure, and the present embodiment is not limited thereto.

[0110] In some optional embodiments, the oil tank 320 can be connected with the mounting beam 134, so as to improve the stability of the oil tank 320.

[0111] Please continue to refer to FIG. 6. In some embodiments, the air inlet unit 340 comprises an air filter 342, and the chassis 10 further comprises an expansion water tank 360 and a carbon canister 350. The air filter 342, the expansion water tank 360 and the carbon canister 350 are arranged side by side along the second direction Y and are connected with the second cross beam 132 respectively.

[0112] In these embodiments, the air filter 342, the expansion water tank 360 and the carbon canister 350 are connected with the second cross beam 132 respectively, and the air filter 342, the expansion water tank 360 and the carbon canister 350 can be located on the side of the range extender 310 and the oil tank 320 close to the middle frame 120 along the first direction X. On this basis, the air filter 342, the expansion water tank 360 and the carbon canister 350 are further arranged side by side along the second direction Y, so that the structure of the range extender module 300 can be more compact by reasonably arranging the positions of the air filter 342, the expansion water tank 360 and the carbon canister 350, so as to further improve the space utilization of the rear frame 130, i.e. the space utilization of the chassis 10.

[0113] It should be noted that the expansion water tank 360 can be located between the air filter 342 and the carbon canister 350, so as to reasonably arrange the positions of the air filter 342, the expansion water tank 360 and the carbon canister 350.

[0114] The air filter 342 is used to filter impurities in the air before the air is delivered to the engine of the range extender 310, so that relatively pure air is delivered into the engine of the range extender 310, which can improve the service life of the engine.

[0115] The carbon tank 350 can be in communication with the oil tank 320 and the engine inlet of the range extender 310, respectively, which can adsorb excess fuel vapor in the oil tank 320, balance the internal pressure of the oil tank 320, and also guide the adsorbed fuel vapor into the engine of the range extender 310 when the vehicle starts, thereby achieving the effects of fuel saving and environmental protection.

[0116] The air inlet unit 340 is located on the side of the range extender 310 along the first direction X towards the front frame 110 and is in communication with the engine inlet of the range extender 310. It can be known that the engine inlet of the range extender 310 is located on the side of the range extender 310 along the first direction X close to the front frame 110. Therefore, the carbon tank 350 is arranged on the second cross beam 132 in the embodiment of the present application, and the carbon tank 350 can be located on the side of the range extender 310 along the first direction X close to the front frame 110, so as to facilitate the communication between the carbon tank 350 and the engine inlet of the range extender 310.

[0117] The expansion water tank 360 can be located on the side of the range extender 310 along the first direction X close to the middle frame 120. When the heat exchange pipeline of the heat management module extends from the front frame 110 to the rear frame 130 to exchange heat with the range extender 310, the expansion water tank 360 can be located on the extension path of the heat exchange pipeline, thereby helping to shorten the length of the heat exchange pipeline.

[0118] Please continue to refer to FIG. 6. In some optional embodiments, the air inlet unit 340 includes an air inlet pipeline 341, the air inlet pipeline 341 includes a first sub-pipeline and a second sub-pipeline; the air filter 342 includes a first inlet and a first outlet, the first sub-pipeline is in communication with the first inlet, and the second sub-pipeline is in communication with the first outlet and the air inlet of the range extender 310, respectively. Air can flow into the air filter 342 through the first sub-pipeline, and after being filtered by the air filter 342, the air can flow into the engine of the range extender 310 through the second sub-pipeline.

[0119] In some optional embodiments, the first sub-pipeline is arranged on the side of the air filter 342 along the second direction Y, and the opening of the end of the first sub-pipeline away from the first inlet of the air filter 342 can face the side of the rear frame 130 along the second direction Y, so that the air inlet of the air inlet unit 340 is close to the range extender 310. When air flows into the air inlet unit 340 from the air inlet, the heat generated by the range extender 310 can be transmitted to the air at the air inlet, so that the temperature of the air is suitable.

[0120] Please continue to refer to FIG. 6, in some embodiments, the exhaust unit 330 includes an exhaust pipe 331 and a three-way catalyst 332, the exhaust pipe 331 includes a third sub-pipe and a fourth sub-pipe; the three-way catalyst 332 includes a second inlet and a second outlet, the third sub-pipe is connected to the second inlet of the three-way catalyst 332 from the gas outlet of the range extender 310, and the fourth sub-pipe is connected to the second outlet, and the three-way catalyst 332 is located on the side of the range extender 310 away from the front frame 110 along the first direction X.

[0121] In these embodiments, one end of the third sub-pipe is connected to the gas outlet of the engine in the range extender 310, and the other end is connected to the second inlet of the three-way catalyst 332, so that the harmful exhaust gas discharged from the engine can be discharged into the three-way catalyst 332 through the third sub-pipe and purified by the three-way catalyst 332 into harmless gas. One end of the fourth sub-pipe is connected to the second outlet of the three-way catalyst 332, and the other end is connected to the external environment, so that the gas purified by the three-way catalyst 332 can be discharged to the external environment through the fourth sub-pipe. In addition, by arranging the three-way catalyst 332 on the side of the range extender 310 away from the front frame 110 along the first direction X, that is, arranging the three-way catalyst 332 close to the rear end of the chassis 10, the length of the fourth sub-pipe can be shortened.

[0122] It should be noted that the exhaust muffler 335 can be arranged on the fourth sub-pipe to eliminate the noise when the exhaust pipe 331 discharges exhaust gas.

[0123] Please refer to FIG. 6 and FIG. 7, in some embodiments, the middle frame 120 includes a first cross beam 122, the rear frame 130 further includes two third longitudinal beams 135 arranged at intervals along the second direction Y, the third longitudinal beam 135 is connected between the second cross beam 132 and the first cross beam 122, the first cross beam 122 and the third longitudinal beam 135 are respectively connected with the second longitudinal beam 131, the chassis 10 further includes a first motor 900, the first motor 900 is arranged in the space defined by the second cross beam 132, the first cross beam 122 and the two third longitudinal beams 135, and is connected with at least one of the second cross beam 132, the first cross beam 122 and the two third longitudinal beams 135; and / or, the chassis 10 further includes a second motor, and the second motor is arranged in the front frame 110.

[0124] In the embodiments of the present application, the "third longitudinal beam 135" is the same structure as the "second longitudinal beam" in the priority document 202410857192.1.

[0125] Two third longitudinal beams 135 are located between the two second longitudinal beams 131, and each third longitudinal beam 135 can extend along the first direction X, and two ends thereof can be connected with the second transverse beam 132 and the first transverse beam 122 respectively. In addition, the two third longitudinal beams 135 are connected with the two second longitudinal beams 131 one by one, so that the stability of the rear section frame 130 can be improved. The first motor 900 and / or the second motor are driving motors of the vehicle, and are used to drive the vehicle to run. The first motor 900 is arranged in the rear section frame 130, and / or the second motor is arranged in the front section frame 110, so that the positions of the first motor 900 and / or the second motor are reasonably arranged, and the driving control of the components of the vehicle by the first motor 900 and / or the second motor can be facilitated.

[0126] In these embodiments, the first motor 900 is arranged in a space defined by the second transverse beam 132, the first transverse beam 122 and the two third longitudinal beams 135, that is, the first motor 900 is located on a side of the range extending module 300 close to the middle section frame 120 along the first direction X, so that the layout of the components in the chassis 10 is reasonably arranged, and the space utilization of the chassis 10 is improved. The first motor 900 is connected with at least one of the second transverse beam 132, the first transverse beam 122 and the two third longitudinal beams 135, so that the assembly reliability of the first motor 900 can be ensured.

[0127] In some optional embodiments, the rear section frame 130 can further include two connecting beams, and the two third longitudinal beams 135 are connected with the two second longitudinal beams 131 one by one through the two connecting beams. The connecting beams can be arranged obliquely and form a triangular stable structure between the third longitudinal beams 135 and the first transverse beam 122, so as to improve the structural stability of the rear section frame 130.

[0128] Please refer to FIG. 8, in some embodiments, the frame 100 includes a front section area 140, a middle section area 150 and a rear section area 160 arranged in sequence along the length direction of the frame 100. The frame 100 is applicable to both pure electric vehicles and range extending hybrid vehicles. In the application mode of the pure electric vehicle, at least part of the rear section area 160 can be used as a storage space or a passenger space. In the application mode of the range extending hybrid vehicle, the rear section area 160 can be used to assemble the range extending module 300.

[0129] In the embodiments of the present application, the "front section area 140" is the same structure as the "first area" in the priority document 202421509554.X, the "middle section area 150" is the same structure as the "second area" in the priority document 202421509554.X, the "rear section area 160" is the same structure as the "third area" in the priority document 202421509554.X, and the "range extending module 300" is the same structure as the "range extending system" in the priority document 202421509554.X.

[0130] Specifically, the front section area 140, the middle section area 150 and the rear section area 160 are sequentially arranged along the length direction of the vehicle frame 100, that is, the front-rear direction of the vehicle. The front section area 140 can be arranged close to the front end of the vehicle, and the rear section area 160 can be arranged close to the rear end of the vehicle. Alternatively, the front section area 140 can be arranged close to the rear end of the vehicle, and the rear section area 160 can be arranged close to the front end of the vehicle. The rear section area 160 can be used as a general area, when the vehicle frame 100 is applied to a pure electric vehicle, at least part of the rear section area 160 can be used as a storage space or a passenger space, and when the vehicle frame 100 is applied to a range-extended hybrid vehicle, the rear section area 160 can be used to assemble the range-extending module 300.

[0131] In the pure electric vehicle application mode, at least part of the rear section area 160 can be directly used as a storage space or a passenger space, or a sheet metal structure can be arranged in the rear section area 160 to enclose a storage space or a passenger space. In the hybrid application mode, the range-extending module 300 can be directly mounted on the vehicle frame 100 corresponding to the rear section area 160, or a mounting structure can be arranged in the rear section area 160 to indirectly mount the range-extending module 300. Moreover, when the vehicle frame 100 is applied to a range-extended hybrid vehicle, the vehicle frame 100 can be applied to a pure electric vehicle by simple modification of the rear section area 160.

[0132] The vehicle frame 100 provided by the embodiment of the present application comprises a front section area 140, a middle section area 150 and a rear section area 160 sequentially arranged along the length direction of the vehicle frame 100, and the vehicle frame 100 is applicable to pure electric vehicles and range-extended hybrid vehicles. In the pure electric vehicle application mode, at least part of the rear section area 160 can be used as a storage space or a passenger space, and in the range-extended hybrid vehicle application mode, the rear section area 160 can be used to assemble the range-extending module 300. Therefore, by connecting the vehicle frame 100 in the pure electric vehicle application mode with the suspension of the chassis 10 or connecting the vehicle frame 100 in the range-extended hybrid vehicle application mode with the suspension of the chassis 10, a chassis 10 for a pure electric vehicle or a chassis 10 for a range-extended hybrid vehicle can be assembled, so that the vehicle frame 100 is applicable to pure electric vehicles and range-extended hybrid vehicles, thereby improving the versatility of the vehicle chassis 10 and reducing production costs.

[0133] In addition, by using at least part of the rear area 160 as a storage space or a passenger space in the pure electric application mode, and by accommodating the range extending module 300 in the rear area 160 in the range extending hybrid vehicle application mode, the space of the vehicle frame 100 can be reasonably arranged, and the space utilization of the vehicle frame 100 can be improved. In addition, in the range extending hybrid vehicle application mode, the range extending module 300 is integrated in the rear area 160, so that the length of the air inlet pipe and the air outlet pipe in the range extending module 300 can be shortened, the structure of the range extending module 300 is more compact, and the space utilization is further improved.

[0134] As shown in FIG. 9, in some embodiments, the vehicle frame 100 includes a vehicle frame body 170, and the vehicle frame 100 further includes a range extending mounting structure in the rear area 160 in the range extending hybrid vehicle application mode, the range extending mounting structure includes a mounting beam 134 connected with the vehicle frame body 170, a projection of the mounting beam 134 on the vehicle frame body 170 along the third direction Z extends along the first direction X, the rear area 160 is divided into a first sub-area and a second sub-area distributed along the second direction Y by the mounting beam 134, the first sub-area is used for arranging the range extender 310 of the range extending module 300, and the second sub-area is used for arranging the oil tank 320 of the range extending module 300, and the first direction X, the second direction Y and the third direction Z are arranged to intersect with each other.

[0135] In the embodiments, the first direction X is the same as the second direction in the priority document 202421509554.X, the second direction Y is the same as the third direction in the priority document 202421509554.X, and the third direction Z is the same as the first direction in the priority document 202421509554.X.

[0136] In these embodiments, in the range extending hybrid vehicle application mode, by arranging the range extending mounting structure in the rear area 160, the range extending module 300 can be mounted on the corresponding vehicle frame 100 in the rear area 160 through the range extending mounting structure, and the mounting stability of the range extending module 300 can be improved. Specifically, the range extending mounting structure includes a mounting beam 134 connected with the vehicle frame body 170, a projection of the mounting beam 134 on the vehicle frame body 170 along the third direction Z extends along the first direction X, which can separate the rear area 160 into a first sub-area and a second sub-area, so that the first sub-area and the second sub-area are distributed along the second direction Y, and the mounting beam 134 is located between the first sub-area and the second sub-area. The first sub-area is used for arranging the range extender 310 of the range extending module 300, and the second sub-area is used for arranging the oil tank 320 of the range extending module 300, so that the space of the rear area 160 can be reasonably utilized, and the space utilization is further improved.

[0137] In some optional embodiments, the extended-range mounting structure can be connected to the vehicle frame body 170 by bolt fastening or by welding, and the present embodiment is not limited in this regard.

[0138] In some optional embodiments, the extended-range mounting structure can further include a plurality of suspensions. The extended-range module 300, including the range extender 310 and the oil tank 320, can be mounted to the vehicle frame 100 by the suspensions, thereby improving the stability of the extended-range module 300.

[0139] In some optional embodiments, the mounting beam 134 can be connected to a partial suspension for mounting the range extender 310, thereby improving the mounting stability of the range extender 310.

[0140] In some embodiments, the rear section area 160 is arranged in the rear section frame, and thus, when the chassis 10 includes the vehicle frame 100 in the extended-range hybrid application mode, the extended-range module 300 is mounted in the rear section area 160, i.e., the extended-range module 300 is integrated in the rear section frame, and the exhaust pipe of the exhaust unit 330 in the extended-range module 300 is arranged to exhaust at the rear end of the chassis 10, thereby reducing the influence of the noise generated by the exhaust on the passengers in the passenger compartment.

[0141] It can be understood that, when the rear section area 160 is arranged in the rear section frame, the front section area 140 can be arranged in the front section frame 110, and the middle section area 150 can be arranged in the middle section frame 120.

[0142] Referring to FIGS. 10 and 11, in some embodiments, the chassis 10 includes a first suspension assembly 510 and a second suspension assembly 520, and at least one of the first suspension assembly 510 and the second suspension assembly 520 includes a leaf spring 511 and two suspensions 512.

[0143] One of the first suspension assembly 510 and the second suspension assembly 520 can be arranged close to the front wheels of the chassis 10, and the other can be arranged close to the rear wheels of the chassis 10. At least one of the first suspension assembly 510 and the second suspension assembly 520 includes a leaf spring 511 and two suspensions 512, and the two suspensions 512 can be arranged in opposite directions along the width direction of the chassis 10 and can be respectively connected to two front wheels or two rear wheels of the chassis 10. The leaf spring 511 can be connected between the two suspensions 512 and can play a role of elastic buffering and shock absorption, and has a simple structure and high reliability. Furthermore, by arranging the leaf spring 511 in the first suspension assembly 510 and / or the second suspension assembly 520, compared with a coil spring, a torsion bar spring, and an air spring, the height of the shock absorber tower package in the suspension 512 can be reduced, so that the shock absorber 5123 can be mounted on the longitudinal beam support of the vehicle frame 100.

[0144] The first suspension assembly 510 and the second suspension assembly can be combined in various ways. For example, the first suspension assembly 510 includes a leaf spring 511 and two suspensions 512, and the second suspension assembly 520 can include a MacPherson suspension, a multi-link suspension, a torsion beam suspension, or any other type of suspension 512.

[0145] In some optional embodiments, the first suspension assembly 510 includes a leaf spring 511 and two suspensions 512, and the second suspension assembly 520 can include a trailing arm suspension, thereby improving the comfort of the chassis 10.

[0146] Optionally, the second suspension assembly 520 can be arranged near the rear wheel of the chassis, thereby improving the comfort of the vehicle.

[0147] Please refer to FIG. 11. In some embodiments, the suspension 512 includes an upper swing arm 5121, a lower swing arm 5122, a shock absorber 5123, a steering knuckle, and a hub. The upper swing arm 5121 is arranged near the wheel center of the chassis 10 in the height direction of the chassis 10 to form a low double wishbone suspension, thereby further reducing the height of the shock absorber tower package and improving the handling, stability, and comfort of the wheel.

[0148] In a second aspect, the embodiments of the present application provide a vehicle body structure, including the chassis 10 of any of the above. The vehicle body structure provided by the embodiments of the present application has the technical effects of the technical solutions of the chassis 10 in any of the above embodiments. The same or corresponding structures and explanations of terms are not repeated here.

[0149] In a third aspect, the embodiments of the present application provide a vehicle, including the chassis 10 of any of the above. The vehicle provided by the embodiments of the present application has the technical effects of the technical solutions of the chassis 10 in any of the above embodiments. The same or corresponding structures and explanations of terms are not repeated here.

[0150] Please refer to FIG. 12. In some embodiments, the vehicle further includes a floor 700 arranged on the chassis 10, and the power battery 200 includes a battery box and a battery module. The battery box includes a bottom plate and a side plate arranged around the periphery of the bottom plate. The bottom plate is arranged opposite to the floor, and the side plate is connected to the floor. The floor, the side plate, and the bottom plate form an accommodation cavity, and the battery module is arranged in the accommodation cavity, thereby helping to reduce the space in the middle frame 120 for arranging the roof, reducing the volume of the power battery 200, reducing the space occupation of the power battery 200 on the middle frame 120, or arranging the battery module in the space in the middle frame 120 originally used for arranging the roof, thereby improving the endurance of the power battery 200.

[0151] Referring to FIG. 12, in some embodiments, the floor 700 comprises a first sub-floor and a second sub-floor 710, the first sub-floor covers at least part of the middle frame 120 and / or at least part of the front frame 110, the second sub-floor 710 covers at least part of the rear frame 130, the second sub-floor 710 is arranged in a foldable manner compared to the first sub-floor, for exposing at least part of the range-extending module 300 located in the rear frame 130, thereby facilitating the maintenance of the parts in the range-extending module 300 in the later stage.

[0152] Referring to FIG. 12, in some alternative embodiments, the vehicle can further comprise a protective plate 800, the protective plate 800 is arranged along the circumference of the second sub-floor 710 and is rotationally connected with the second sub-floor 710, the protective plate 800 can form a cavity together with the second sub-floor 710, and the range-extending module 300 can be arranged in the cavity, thereby protecting the range-extending module 300.

[0153] In some embodiments, the vehicle further comprises an upper body, the upper body is detachably connected with the chassis 10.

[0154] In these embodiments, the chassis 10 is detachably connected with the upper body, thus, when the chassis 10 comprises the frame 100 in the application mode of the pure electric vehicle, the corresponding upper body of the pure electric vehicle can be connected with the chassis 10, when the chassis 10 comprises the frame 100 in the application mode of the range-extending hybrid vehicle, the corresponding upper body of the range-extending hybrid vehicle can be connected with the chassis 10, thereby improving the versatility of the parts in the vehicle.

[0155] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to the application without departing from the scope thereof, and equivalent parts can be substituted for the parts thereof. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A chassis, comprising: The frame, including the front frame, the middle frame, and the rear frame; The power battery is located in the middle section of the vehicle frame; A water tank assembly for holding domestic water is installed on the middle section of the vehicle frame and is arranged side by side with the power battery.

2. The chassis according to claim 1, wherein, The mid-section frame includes a mid-section frame body, which includes two first longitudinal beams spaced apart along the width direction of the chassis and two first cross beams spaced apart along the length direction of the chassis. The first cross beams are located between the two first longitudinal beams and are connected to the two first longitudinal beams respectively. The two first longitudinal beams and the two first cross beams together define an accommodating space. At least a portion of the power battery is located in the accommodating space and is connected to at least one of the first longitudinal beams and the first cross beams.

3. The chassis according to claim 1, wherein, The mid-section frame includes a mid-section frame body and a first partition beam disposed on the mid-section frame body. The mid-section frame body defines an accommodating space, which is divided into a first region and a second region by the first partition beam. The power battery is disposed in the first region, and the water tank assembly is disposed in the second region. The power battery and / or the water tank assembly are connected to the first partition beam.

4. The chassis according to claim 3, wherein, The water tank assembly is connected to the first partition beam. The water tank assembly includes a first water tank for containing clean water and a second water tank for containing wastewater. The first water tank and the second water tank are arranged side by side along the length of the first partition beam, and the first water tank and / or the second water tank are connected to the first partition beam.

5. The chassis according to claim 4, wherein, The mid-section frame also includes a second partition beam, which is connected to the mid-section frame body and the first partition beam respectively. The second region is divided into a first sub-region and a second sub-region by the second partition beam. The first water tank is located in the first sub-region, and the second water tank is located in the second sub-region. The first water tank and / or the second water tank are connected to the second partition beam.

6. The chassis according to claim 5, wherein, The first partition beam and / or the second partition beam are detachably connected to the middle section of the vehicle frame body.

7. The chassis according to any one of claims 3-6, wherein, The first region and the second region are distributed along the length of the chassis, with the first region located near the front frame and the second region located near the rear frame.

8. The chassis according to any one of claims 1-6, wherein, The chassis also includes a thermal management module, which is disposed on the front frame and is used at least for heat exchange with the power battery; and / or, the chassis also includes a range extender module, which is disposed on the rear frame and connected to the power battery.

9. The chassis according to claim 8, wherein, The thermal management module includes a compressor, a heat pump, and a first radiator, which are respectively mounted on the front frame.

10. The chassis according to claim 8, wherein, The range extender module includes a range extender, a fuel tank, an intake unit, and an exhaust unit. The intake unit and the exhaust unit are respectively connected to the range extender. The intake unit and the range extender are arranged side by side along a first direction, and the range extender and the fuel tank are arranged side by side along a second direction. The first direction and the second direction intersect.

11. The chassis according to claim 10, wherein, The intake unit and the exhaust unit are located on opposite sides of the range extender along the first direction.

12. The chassis according to claim 10, wherein, The exhaust unit includes an exhaust muffler, which is located on one side of the fuel tank along the first direction and is offset from the fuel tank along a third direction, which intersects with the first direction.

13. The chassis according to claim 10, wherein, The rear frame includes two second longitudinal beams spaced apart along the second direction and a second and a third crossbeam spaced apart along the first direction. The second crossbeam is located on the side of the third crossbeam closer to the middle frame. Both the second and third crossbeams are connected to the two second longitudinal beams. The range extender module is disposed within the space defined by the two second longitudinal beams, the second crossbeam, and the third crossbeam, and is connected to at least one of the two second longitudinal beams, the second crossbeam, and the third crossbeam.

14. The chassis according to claim 13, wherein, The mid-section frame includes a first crossbeam, and the rear-section frame further includes two third longitudinal beams spaced apart along the second direction. The first crossbeam and the second crossbeam are spaced apart along the first direction, and the third longitudinal beams connect between the first crossbeam and the second crossbeam. The first crossbeam and the third longitudinal beams are respectively connected to the second longitudinal beam. The chassis also includes a first motor, which is disposed within the space defined by the first crossbeam, the second crossbeam, and the two third longitudinal beams, and is connected to at least one of the first crossbeam, the second crossbeam, and the two third longitudinal beams; and / or, The chassis also includes a second motor, which is mounted on the front frame.

15. The chassis according to any one of claims 1-6, wherein, The vehicle frame includes a front section, a middle section, and a rear section distributed sequentially along its length. This vehicle frame is applicable to both pure electric vehicles and range-extended hybrid vehicles. In the pure electric vehicle application mode, at least part of the rear section can be used as storage space or passenger space. In the application mode of range-extended hybrid vehicles, the rear section can be used to assemble range-extending modules.

16. The chassis according to claim 15, wherein, The vehicle frame includes a frame body. In the range-extended hybrid vehicle application mode, the vehicle frame also includes a range-extending mounting structure located in the rear section region. The range-extending mounting structure includes a mounting beam connected to the frame body. The projection of the mounting beam on the frame body along a third direction extends along a first direction. The rear section region is divided by the mounting beam into a first sub-region and a second sub-region distributed along a second direction. The first sub-region is used to house the range extender of the range-extending module, and the second sub-region is used to house the fuel tank of the range-extending module. The first direction, the second direction, and the third direction intersect each other.

17. The chassis according to claim 15, wherein, The rear section area is located on the rear frame.

18. The chassis according to claim 15, wherein, The chassis also includes a first suspension assembly and a second suspension assembly, at least one of which includes a leaf spring and two suspensions.

19. A vehicle body structure comprising the chassis as described in any one of claims 1-18.

20. A vehicle comprising the chassis according to any one of claims 1-18.

21. The vehicle according to claim 20, wherein, The vehicle also includes a floor mounted on the chassis. The power battery includes a battery box and a battery module. The battery box includes a bottom plate and side plates arranged circumferentially around the bottom plate. The bottom plate is disposed opposite to the floor. The side plates are connected to the floor. The floor, the side plates, and the bottom plate enclose a receiving cavity. The battery module is disposed in the receiving cavity.

22. The vehicle according to claim 20 or 21, wherein, The vehicle also includes an upper body, which is detachably connected to the chassis.

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