Shared vehicle body assembly for both pure electric vehicle and extended-range vehicle, pure electric vehicle, and extended-range vehicle

Abstract

A shared vehicle body assembly for both a pure electric vehicle and an extended-range vehicle, relating to the technical field of vehicle body assemblies. The vehicle body assembly comprises a front-seat front cross member assembly (21), a left sill assembly (27), a right sill assembly (28), and a front floor sill assembly (25). The cross section of the front-seat front cross member assembly (21) has a C-shaped channel flanged structure, and the front-seat front cross member assembly (21) is snap-fitted and welded to a front floor body and has a front end surface that is assembled with and welded to front side member upper cover plates (19) and a firewall and center tunnel connecting plate (20). The left sill assembly (27) and the right sill assembly (28) are each formed by means of nested press‑fit welding of a sill connecting plate and a sill inner plate body; the sill connecting plate has a flanged structure and is butt-welded to a left side wall assembly (1) or a right side wall assembly (2); and the sill inner plate body is a C-shaped channel, and has a lower surface on which multiple holes are formed for correspondingly welding multiple battery pack mounting reinforcement plate assemblies. Two side end surfaces of the front floor sill assembly (25) are sequentially welded to a left front vertical plate assembly (16), a right front vertical plate assembly (17), the left sill assembly (27), and the right sill assembly (28). The vehicle body assembly can be matched with both extended-range and pure electric power systems at the same time. Also disclosed are a pure electric vehicle, and an extended-range vehicle.

Description

Pure electric and extended range vehicle shared vehicle body assembly, pure electric vehicle and extended range vehicle

[0001] The present application claims priority to the Chinese patent application No. 202411257150.0, filed on September 09, 2024, and entitled "Pure electric and extended range vehicle shared vehicle body assembly, pure electric vehicle and extended range vehicle", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of vehicle body assembly, in particular to a pure electric and extended range vehicle shared vehicle body assembly, a pure electric vehicle and an extended range vehicle. BACKGROUND

[0003] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0004] More and more automobile manufacturers begin to develop pure electric, extended range, hybrid, hydrogen energy and other new energy vehicle models. The development of various new energy technology products can improve the competitiveness and technical ability of enterprises, but at the same time, it also faces the problems of product diversification, complication and differentiation and development cycle caused by the simultaneous development of various technical paths. At the same time, due to the long development and acceptance cycle of large sheet metal molds, if they cannot be developed universally, it will bring great challenges to the development and listing cycle of products.

[0005] At present, major manufacturers simultaneously develop pure electric, extended range and other new energy technologies in new product development, and on the basis of maintaining balanced development of various new energy technologies, they bring users more product choices. However, due to the large difference in principle and hardware structure between pure electric and extended range, if two platforms are developed at the same time, a large amount of time and cost will be invested, and there will be great challenges to the production line. SUMMARY

[0006] In order to solve the problems of the prior art, the present application provides a pure electric and extended range vehicle shared vehicle body assembly, a pure electric vehicle and an extended range vehicle. By improving the front seat front cross beam assembly, the left door sill assembly and the right door sill assembly of the front floor assembly, the front seat front cross beam assembly of the front floor assembly, the sharing of these components is realized, and the sharing of the upper vehicle body outer covering can be realized, so that it can match two different power systems of extended range and pure electric.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] The first aspect of the present application provides a pure electric and extended range vehicle shared vehicle body assembly.

[0009] A pure electric and extended range vehicle shared vehicle body assembly, comprising a front seat front cross beam assembly, a left door sill assembly, a right door sill assembly and a front floor sill assembly.

[0010] The cross section of the front seat front cross beam assembly adopts a C-shaped groove with a flange structure, is buckled on the front floor body and welded, and a front end surface is spliced and welded with a front longitudinal beam upper cover plate, a front baffle and a middle channel connecting plate;

[0011] The left and right door sill assemblies are composed of a door sill connecting plate and a door sill inner plate body through nested compression welding; the door sill connecting plate is a flange structure and is butt welded with the left or right side wall assembly; the door sill inner plate body is a C-shaped groove, and a lower surface is provided with a plurality of holes corresponding to a plurality of battery pack mounting reinforcement plate assemblies;

[0012] The front floor door sill assembly is provided with a Z-direction upward 90° angle bending flange on both sides, and both side end surfaces are sequentially welded with a left front vertical plate assembly, a right front vertical plate assembly, the left door sill assembly and the right door sill assembly.

[0013] Further, the left and right door sill reinforcement beam assemblies are further included;

[0014] The lower surfaces of the left and right door sill reinforcement beam assemblies are uniformly provided with a plurality of door sill connecting plates to be aligned and welded with the flanges of the left or right door sill assembly.

[0015] Further, the upper surface of the front floor door sill assembly is sequentially welded from front to back with two front longitudinal beam upper cover plates, a front baffle and a middle channel connecting plate, a front seat front cross beam assembly, four battery front middle mounting brackets, an airbag ECU mounting plate and a front seat rear cross beam assembly;

[0016] The front end surface of the front floor door sill assembly is lap riveted and welded with the lower part of the front baffle body, and the rear end surface is lap riveted and welded with the rear part of the front floor body.

[0017] Further, the left and right front vertical plate assemblies and a front windshield lower cross beam assembly are further included;

[0018] The lower end surface of the front windshield lower cross beam assembly is X-directionally welded with the upper part of the front baffle body;

[0019] The inner side of the left front vertical plate assembly is sequentially welded from top to bottom with the front windshield lower cross beam assembly, the upper part of the front baffle body, the lower part of the front baffle body and the front baffle left support plate assembly, and the outer side of the left front vertical plate assembly is sequentially welded from top to bottom with the left front wheel cover assembly, the left door sill assembly and the left side wall assembly; the left front vertical plate assembly adopts an inner flange structure on the top surface to be XZ-plane normally compression welded with the front windshield lower cross beam assembly, and adopts an outer flange structure on the side surface to be positively Y-directionally buckled welded with the left side wall assembly;

[0020] The inner side of the right front vertical plate assembly is sequentially welded from top to bottom with the front windshield lower cross beam assembly, the front baffle body upper part, the front baffle body lower part and the front baffle right support plate assembly, and the outer side of the right front vertical plate assembly is sequentially welded from top to bottom with the right front wheel cover assembly, the right door sill assembly and the right side wall assembly; the right front vertical plate assembly is XZ plane normal pressure welding with the front windshield lower cross beam assembly by using the inner flanging structure on the top surface, and is positive Y direction snap welding with the right side wall assembly by using the outer flanging structure on the side surface.

[0021] Further, the front longitudinal beam upper cover plate adopts a bending V angle design, the bending angle is the same as that of the front baffle body lower part, so as to be welded with the front baffle body lower part, the front longitudinal beam upper cover plate is welded with the front floor body at the plane, and the front longitudinal beam upper cover plate, the front baffle body lower part and the front floor body are welded to form an integral structure, and the Y direction welding positions of the front longitudinal beam upper cover plate on both sides are respectively aligned with the right front longitudinal beam assembly and the left front longitudinal beam assembly in Y direction.

[0022] Further, the right door sill inner plate rear assembly and the left door sill inner plate rear assembly are further included.

[0023] The outer flange of the right door sill inner plate rear assembly is butt welded with the inner flange of the right side wall assembly.

[0024] The outer flange of the left door sill inner plate rear assembly is butt welded with the inner flange of the left side wall assembly.

[0025] Further, the rear floor body assembly is further included.

[0026] The front end bending surface of the rear floor body assembly is lap welded with the rear end bending surface of the middle floor assembly, the side surfaces are respectively lap welded on the inner flanges of the left rear longitudinal beam assembly and the right rear longitudinal beam assembly through welding and flow drilling screw fastening, and the rear end surface provides support and fixation for the rear floor storage box assembly.

[0027] Further, the rear floor left rear connecting plate, the rear wall inner plate assembly and the rear wall outer plate assembly are further included.

[0028] The front end bending edge of the rear floor left rear connecting plate is lap welded with the left rear longitudinal beam body and connected through welding, the side edge is lap welded with the left rear longitudinal beam body and fastened through bolts, and the rear end flange is welded with the rear wall inner plate assembly;

[0029] The inner surfaces of the rear wall inner plate assembly are respectively butt welded with the rear end flanges of the rear floor left rear connecting plate, the rear floor rear connecting plate and the rear floor right rear connecting plate;

[0030] The upper and lower sides of the rear wall outer plate assembly are provided with two flange structures, the first flange is used for strengthening the body strength, the second flange is respectively butt jointed and welded with the flange of the rear wall inner plate assembly, the middle groove surface is welded with the rear bumper assembly fixing support for fixing the rear bumper assembly;

[0031] The welding body of the rear wall inner plate assembly and the rear wall outer plate assembly is clamped between the left rear longitudinal beam assembly and the rear anti-collision beam assembly on the left side and is fixedly connected through bolts, and is clamped between the right rear longitudinal beam assembly and the rear anti-collision beam assembly on the right side and is fixedly connected through bolts.

[0032] The second aspect of the present application provides a pure electric vehicle, which adopts the vehicle body assembly shared by the pure electric vehicle and the extended range vehicle as described in the first aspect.

[0033] The third aspect of the present application provides an extended range vehicle, which adopts the vehicle body assembly shared by the pure electric vehicle and the extended range vehicle as described in the first aspect.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] 1. The front seat front cross beam assembly of the front floor assembly, the left door sill assembly, the right door sill assembly, the front seat front cross beam assembly of the front floor assembly are improved, the sharing of these components is realized, and the sharing of the upper vehicle body outer cover is realized, so that the two different power systems of the extended range and the pure electric can be matched at the same time.

[0036] 2. The left front vertical plate assembly and the right front vertical plate assembly of the engine compartment, the front windshield lower cross beam assembly are shared, the front seat front cross beam assembly of the front floor assembly, the front floor sill assembly, the left door sill assembly, the right door sill assembly, the left door sill reinforcement beam assembly, the right door sill reinforcement beam assembly of the front floor assembly are shared, the left door sill inner plate rear assembly, the right door sill inner plate rear assembly, the rear floor body assembly, the rear wall inner plate assembly, the rear wall outer plate assembly, the rear anti-collision beam assembly, the rear floor left connecting plate, the rear floor rear connecting plate of the rear floor assembly are shared, and the sharing of the left side wall assembly, the right side wall assembly and the roof system of the upper vehicle body is realized through the sharing of the above lower vehicle body components, and the sharing of the outer cover is realized through the sharing of the above upper vehicle body components. BRIEF DESCRIPTION OF DRAWINGS

[0037] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and serve to explain the present application, and do not constitute an improper limitation of the present application.

[0038] Fig. 1 is a top view of the upper vehicle body assembly of the embodiment 1 of the present application;

[0039] Fig. 2 is a front view of the upper vehicle body assembly of the embodiment 1 of the present application;

[0040] Fig. 3 is a front view of the left side wall assembly of the embodiment 1 of the present application;

[0041] Fig. 4 is a left view of the left side wall assembly of the embodiment 1 of the present application;

[0042] Fig. 5 is a front view of the right side wall assembly of the embodiment 1 of the present application;

[0043] Figure 6 is a left view of a right side enclosure assembly of embodiment 1 of the present application;

[0044] Figure 7 is a front view of a roof system of embodiment 1 of the present application;

[0045] Figure 8 is a top view of a roof system of embodiment 1 of the present application;

[0046] Figure 9 is a left view of an engine compartment assembly of embodiment 1 of the present application;

[0047] Figure 10 is a front view of a front panel cross-car beam of embodiment 1 of the present application;

[0048] Figure 11 is a top view of a front panel cross-car beam of embodiment 1 of the present application;

[0049] Figure 12 is a front view of a front impact beam assembly of embodiment 1 of the present application;

[0050] Figure 13 is a top view of a front impact beam assembly of embodiment 1 of the present application;

[0051] Figure 14 is a front view of a lower impact beam assembly of embodiment 1 of the present application;

[0052] Figure 15 is a top view of a lower impact beam assembly of embodiment 1 of the present application;

[0053] Figure 16 is a top view of an engine compartment assembly of embodiment 1 of the present application;

[0054] Figure 17 is a front view of a right front rail assembly of embodiment 1 of the present application;

[0055] Figure 18 is a view of a right front rail assembly of embodiment 1 of the present application;

[0056] Figure 19 is a front view of a left front rail assembly of embodiment 1 of the present application;

[0057] Figure 20 is a top view of a left front rail assembly of embodiment 1 of the present application;

[0058] Figure 21 is a front view of a right front wheelhouse assembly of embodiment 1 of the present application;

[0059] Figure 22 is a top view of a right front wheelhouse assembly of embodiment 1 of the present application;

[0060] Figure 23 is a front view of a left front wheelhouse assembly of embodiment 1 of the present application;

[0061] Figure 24 is a top view of a left front wheelhouse assembly of embodiment 1 of the present application;

[0062] Figure 25 is a front view of a front end structure assembly of embodiment 1 of the present application;

[0063] Figure 26 is a top view of a front end structure assembly of embodiment 1 of the present application;

[0064] Figure 27 is an isometric view of the engine compartment assembly of embodiment 1 of the present application;

[0065] Figure 28 is a front view of the upper portion of the front panel body of embodiment 1 of the present application;

[0066] Figure 29 is a top view of the upper portion of the front panel body of embodiment 1 of the present application;

[0067] Figure 30 is a front view of the lower portion of the front panel body of embodiment 1 of the present application;

[0068] Figure 31 is a top view of the lower portion of the front panel body of embodiment 1 of the present application;

[0069] Figure 32 is a front view of the left support panel of the front panel of embodiment 1 of the present application;

[0070] Figure 33 is a top view of the left support panel of the front panel of embodiment 1 of the present application;

[0071] Figure 34 is a front view of the right support panel of the front panel of embodiment 1 of the present application;

[0072] Figure 35 is a top view of the right support panel of the front panel of embodiment 1 of the present application;

[0073] Figure 36 is a front view of the left front vertical panel assembly of embodiment 1 of the present application;

[0074] Figure 37 is a top view of the left front vertical panel assembly of embodiment 1 of the present application;

[0075] Figure 38 is a front view of the right front vertical panel assembly of embodiment 1 of the present application;

[0076] Figure 39 is a top view of the right front vertical panel assembly of embodiment 1 of the present application;

[0077] Figure 40 is a front view of the front lower cross member assembly of embodiment 1 of the present application;

[0078] Figure 41 is a top view of the front lower cross member assembly of embodiment 1 of the present application;

[0079] Figure 42 is a top view of the front floor assembly of embodiment 1 of the present application;

[0080] Figure 43 is a front view of the front floor assembly of embodiment 1 of the present application;

[0081] Figure 44 is a front view of the front rail upper cover of embodiment 1 of the present application;

[0082] Figure 45 is a top view of the front rail upper cover of embodiment 1 of the present application;

[0083] Figure 46 is a front view of the front panel and mid-channel connector of embodiment 1 of the present application;

[0084] Figure 47 is a top view of the front cross-car beam and mid tunnel cross-car beam of the embodiment 1 of the present application;

[0085] Figure 48 is a front view of the front seat front cross-car beam assembly of the embodiment 1 of the present application;

[0086] Figure 49 is a bottom view of the front seat front cross-car beam assembly of the embodiment 1 of the present application;

[0087] Figure 50 is a front view of the battery front mid-mount bracket of the embodiment 1 of the present application;

[0088] Figure 51 is a left view of the battery front mid-mount bracket of the embodiment 1 of the present application;

[0089] Figure 52 is a front view of the airbag ECU mounting bracket of the embodiment 1 of the present application;

[0090] Figure 53 is a left view of the airbag ECU mounting bracket of the embodiment 1 of the present application;

[0091] Figure 54 is a front view of the front seat rear cross-car beam assembly of the embodiment 1 of the present application;

[0092] Figure 55 is a bottom view of the front seat rear cross-car beam assembly of the embodiment 1 of the present application;

[0093] Figure 56 is an isometric view of the front floor assembly of the embodiment 1 of the present application;

[0094] Figure 57 is a front view of the front floor rocker assembly of the embodiment 1 of the present application;

[0095] Figure 58 is a front view of the front floor rear body of the embodiment 1 of the present application;

[0096] Figure 59 is a schematic view of the left rocker assembly of the embodiment 1 of the present application;

[0097] Figure 60 is a schematic view of the right rocker assembly of the embodiment 1 of the present application;

[0098] Figure 61 is a schematic view of the left rocker reinforcement beam of the embodiment 1 of the present application;

[0099] Figure 62 is a schematic view of the right rocker reinforcement beam of the embodiment 1 of the present application;

[0100] Figure 63 is a front view of the rear floor assembly of the embodiment 1 of the present application;

[0101] Figure 64 is a front view of the mid floor assembly of the embodiment 1 of the present application;

[0102] Figure 65 is a bottom view of the mid floor assembly of the embodiment 1 of the present application;

[0103] Figure 66 is a front view of the right rocker inner panel rear assembly of the embodiment 1 of the present application;

[0104] Figure 67 is a top view of the right rocker inner rear panel assembly of embodiment 1 of the present application;

[0105] Figure 68 is a front view of the left rocker inner rear panel assembly of embodiment 1 of the present application;

[0106] Figure 69 is a top view of the left rocker inner rear panel assembly of embodiment 1 of the present application;

[0107] Figure 70 is a diagram of the left rear longitudinal beam assembly of embodiment 1 of the present application;

[0108] Figure 71 is a diagram of the right rear longitudinal beam assembly of embodiment 1 of the present application;

[0109] Figure 72 is a diagram of the rear floor assembly of embodiment 1 of the present application;

[0110] Figure 73 is a front view of the rear floor body assembly of embodiment 1 of the present application;

[0111] Figure 74 is a top view of the rear floor body assembly of embodiment 1 of the present application;

[0112] Figure 75 is a front view of the left rear floor cross brace of embodiment 1 of the present application;

[0113] Figure 76 is a top view of the left rear floor cross brace of embodiment 1 of the present application;

[0114] Figure 77 is a diagram of the rear floor storage bin assembly of embodiment 1 of the present application;

[0115] Figure 78 is a front view of the right rear floor cross brace of embodiment 1 of the present application;

[0116] Figure 79 is a top view of the right rear floor cross brace of embodiment 1 of the present application;

[0117] Figure 80 is a front view of the rear floor rear cross brace of embodiment 1 of the present application;

[0118] Figure 81 is a top view of the rear floor rear cross brace of embodiment 1 of the present application;

[0119] Figure 82 is a front view of the rear quarter inner panel assembly of embodiment 1 of the present application;

[0120] Figure 83 is a top view of the rear quarter inner panel assembly of embodiment 1 of the present application;

[0121] Figure 84 is a diagram of the rear quarter outer panel assembly of embodiment 1 of the present application;

[0122] Figure 85 is a diagram of the rear bumper beam assembly of embodiment 1 of the present application;

[0123] Figure 86 is a front view of the outer cover of embodiment 1 of the present application;

[0124] Figure 87 is a top view of the outer cover of embodiment 1 of the present application;

[0125] Fig. 88 is a left side view of the outer cover of Example 1 of the present application;

[0126] Fig. 89 is an isometric view of the outer cover of Example 1 of the present application;

[0127] Fig. 90 is a structural diagram of a pure electric vehicle of Example 2 of the present application;

[0128] Fig. 91 is a structural diagram of a range-extended vehicle of Example 3 of the present application. DETAILED DESCRIPTION

[0129] The present application will be further described with reference to the drawings and examples.

[0130] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0131] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0132] In the present application, the terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "lateral", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only a relationship word determined for the convenience of describing the structural relationship of the components or elements of the present application, and is not intended to specify any component or element in the present application, and cannot be understood as a limitation of the present application.

[0133] In the present application, the terms such as "fixedly connected", "connected", "connected" and the like should be understood broadly, which means that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant researchers or technicians in the art, the specific meaning of the above terms in the present application can be determined according to the specific circumstances, and cannot be understood as a limitation of the present application.

[0134] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0135] Example 1

[0136] In combination with the embodiments shown in FIGS. 1-89, the embodiment 1 of the present application provides a vehicle body assembly shared by pure electric and extended range electric vehicles.

[0137] While major host factories are deploying various new energy products, they are exploring shared platforms that can integrate various new energy technology products to adapt to the sharing and platformization of components and molds for different new energy vehicle models.

[0138] The vehicle body assembly shared by pure electric and extended range electric vehicles provided by the embodiment can simultaneously realize the sharing of the upper body of pure electric (EV) and extended range electric (REEV) vehicles through the sharing of some parts of the lower body, can meet the differential arrangement of the powertrains of pure electric and extended range electric vehicles through the differentiation of some parts of the engine compartment of the lower body, can meet the differential arrangement of the batteries, fuel tanks, and exhaust pipelines of pure electric and extended range electric vehicles through the differentiation of some parts of the front floor sill assembly of the lower body, can meet the differential arrangement of the powertrains and exhaust aftertreatment systems of pure electric and extended range electric vehicles through the differentiation of some parts of the rear floor assembly of the lower body, and can realize the sharing of outer coverings through the sharing of the upper body. Thus, the two different new energy vehicle models can share the upper body and outer coverings to achieve the purpose of sharing the body covering the two different new energy vehicle models.

[0139] The vehicle body assembly shared by pure electric and extended range electric vehicles provided by the embodiment includes a lower body assembly, an upper body assembly, and outer coverings.

[0140] (1) For the upper body assembly, as shown in FIGS. 1 and 2, it includes a left side wall assembly 1, a right side wall assembly 2, and a roof system 3.

[0141] For pure electric and extended range electric vehicles, the left side wall assembly 1, the right side wall assembly 2, and the roof system 3 are shared.

[0142] FIG. 3 is a front view of the left side wall assembly 1, and FIG. 4 is a left view of the left side wall assembly 1. As shown in FIGS. 3 and 4, the left side wall assembly 1 is connected to the left side wall outer plate assembly through the recessed flange butt joint of the left side wall inner plate front assembly and the left side wall inner plate rear assembly by welding. After the two are buckled, a sealed cavity structure is formed at the A, B, and C pillars through welding. By increasing the cross-sectional area, the overall strength of the A, B, and C pillar areas can be improved.

[0143] In combination with FIGS. 27 and 63, the left side wall assembly 1 is respectively welded and connected to the left front vertical plate assembly 16, the left sill inner plate rear assembly 33, and the left rear longitudinal beam assembly 34 through the flange butt joint, so that the left side wall assembly and the lower body assembly are welded into a whole. The outer boundary of the left rear longitudinal beam assembly 34 is the same as that of the left side wall inner plate rear assembly, but the inner boundary is different due to the existence of the installation space difference between the pure electric battery and the extended range electric fuel tank at the Z-direction height of the middle floor assembly 31 at this position, resulting in the height difference of the welded inner flange of the front section of the body longitudinal beam.

[0144] The left side wall assembly 1 and the right side wall assembly 2 are synchronously welded by left and right welding robot hands in the same process and station, wherein the left side wall inner plate front assembly is provided with a welding part, i.e., a front top cross beam left connecting plate, and the left side wall inner plate rear upper segment assembly is provided with a welding body composed of a left rear top cross beam lower connecting plate, a left D column upper reinforcing plate and a left rear top cross beam upper connecting plate.

[0145] As shown in FIGS. 5 and 6, the right side wall assembly 2 is connected by welding at a groove flange of the right side wall outer plate assembly through groove flange butt joint clamping of a right side wall inner plate front assembly and a right side wall inner plate rear assembly, and a sealed cavity structure is formed by welding at A, B and C column areas after clamping, and the overall strength of the A, B and C column areas can be improved by increasing the cross-sectional area.

[0146] As shown in FIGS. 27 and 63, the right side wall assembly 2 is respectively welded and connected with a right front vertical plate assembly 17, a right door sill inner plate rear assembly 32 and a right rear longitudinal beam assembly 35 through flange butt joint welding, so that the right side wall assembly and the lower body assembly are welded as a whole. The internal boundary of the right rear longitudinal beam assembly 35 is different due to the existence of the Z-direction height of the battery and the oil tank installation space of the range-extending oil tank of the middle floor assembly 31, which causes the welding inner flange height difference of the front section longitudinal beam.

[0147] The right side wall assembly 2 and the left side wall assembly are synchronously welded by left and right welding robot hands in the same process and station, wherein the right side wall inner plate front assembly is provided with a welding part, i.e., a front top cross beam right connecting plate, and the right side wall inner plate rear upper segment assembly is provided with a welding body composed of a right rear top cross beam lower connecting plate, a right D column upper reinforcing plate and a right rear top cross beam upper connecting plate.

[0148] The right side wall assembly 2 of the pure electric vehicle and the right side wall assembly 2 of the range-extending vehicle are only different in oil filler, and the molds are universal.

[0149] The right side wall inner plate rear upper segment assembly is different due to the right side fuel oil filling system.

[0150] Fig. 7 is a front view of the roof system 3, and Fig. 8 is a top view of the roof system 3, as shown in Figs. 7 and 8, the roof system 3 includes a front roof crossbeam inner plate, a front roof crossbeam assembly, a rear roof crossbeam assembly and a rear roof crossbeam inner plate. Among them, the front roof crossbeam inner plate and the front roof crossbeam assembly are welded by pressure welding to form a front welding cavity, and are respectively welded and connected with the front roof crossbeam left connecting plate and the front roof crossbeam right connecting plate in the two side grooves. Among them, the rear roof crossbeam assembly and the rear roof crossbeam inner plate are welded by pressure welding to form a rear welding cavity, and are respectively welded with the welding body composed of the left rear roof crossbeam lower connecting plate, the left D column upper reinforcing plate and the left rear roof crossbeam upper connecting plate on the left and right sides, and the welding body composed of the right rear roof crossbeam lower connecting plate, the right D column upper reinforcing plate and the right rear roof crossbeam upper connecting plate on the right side. Pressure welding is carried out. Through the front and rear welding cavities, the left side wall assembly and the right side wall assembly are connected into a welding body at the top of the vehicle body, so that the lower vehicle body and the upper vehicle body form a cage type vehicle body structure.

[0151] (2) For the lower vehicle body assembly, it includes the engine compartment assembly, the front floor assembly and the rear floor assembly.

[0152] (201) As shown in Figs. 9, 16 and 27, the engine compartment assembly includes: a front apron crossbeam 4, a front bumper beam assembly 5, a lower bumper beam assembly 6, a right front longitudinal beam assembly 7, a left front longitudinal beam assembly 8, a right front wheelhouse assembly 9, a left front wheelhouse assembly 10, a front end structure assembly 11, a front apron body upper part 12, a front apron body lower part 13, a front apron left support plate 14, a front apron right support plate 15, a left front vertical plate assembly 16, a right front vertical plate assembly 17, and a front windshield lower crossbeam assembly 18.

[0153] For pure electric and extended range vehicles, the left front vertical plate assembly 16, the right front vertical plate assembly 17 and the front windshield lower crossbeam assembly 18 are common; and the front apron crossbeam 4, the front bumper beam assembly 5, the lower bumper beam assembly 6, the right front longitudinal beam assembly 7, the left front longitudinal beam assembly 8, the right front wheelhouse assembly 9, the left front wheelhouse assembly 10, the front end structure assembly 11, the front apron body upper part 12, the front apron body lower part 13, the front apron left support plate 14 and the front apron right support plate 15 are different.

[0154] ① The front apron crossbeam 4, as shown in Fig. 9, is welded at the lower position of the engine compartment front apron (firewall), and is welded with the left front wheelhouse longitudinal beam assembly and the right front wheelhouse longitudinal beam assembly to form a welding assembly. By adopting the reverse concave structure design, it can better absorb energy and deformation when the front collision and small offset collision occurs. Fig. 10 is a front view of the front apron crossbeam 4, and Fig. 11 is a top view of the front apron crossbeam 4. As shown in Figs. 10 and 11, the front apron crossbeam 4 adopts a W-shaped structure to closely fit the firewall, and the body adopts a groove structure to increase the strength of the body. For pure electric and extended range vehicles, due to the difference in the Y direction structure size of the dynamic total structure between the extended range and the pure electric vehicle, the installation distance and the stress point of the longitudinal beam are different, so the front apron crossbeam 4 is a different part.

[0155] ②Front anti-collision beam assembly 5, Fig. 12 is a front view of the front anti-collision beam assembly 5, Fig. 13 is a top view of the front anti-collision beam assembly 5, as shown in Fig. 12 and Fig. 13, the arc-shaped rectangular tube structure can meet the front guard modeling three-dimensional CAS curved surface, the rectangular tube has a welded reinforcing rib structure inside to effectively strengthen the body structure strength, four L-shaped supports are welded on the upper part and can be used to fix the front guard body, the left side built-in welded threaded round pipe can be used to fix the trailer hook, two groups of a total of four pull rivet bolts are provided on both sides of the lower part to fix the front guard beam mounting and connecting outer plate to form a whole structure after being connected with the lower anti-collision beam assembly 6, effectively increase the leg force area of the pedestrian and can improve the pedestrian protection score, specifically, the front anti-collision beam assembly 5, the lower anti-collision beam assembly 6 and the front guard beam mounting and connecting outer plate are fixed to form a rigid rectangular plane, which can effectively increase the leg contact area of the pedestrian and avoid the pedestrian from being rolled into the car bottom. Two rectangular energy absorption boxes are welded on both sides of the arc-shaped rectangular tube, a plurality of through holes are punched at the round corners of the rectangular tube to bend and weaken the effect of absorbing collision energy when the collision occurs, square mounting end plates are welded on the end faces of the rectangular tube, and the above welding forms the front anti-collision beam assembly. There are four mounting holes on both sides of the anti-collision beam end plate, which are connected with the right front wheel cover longitudinal beam assembly and the left front wheel cover longitudinal beam assembly to form a whole with the whole vehicle. Due to the difference in Y-direction installation distance of the range extender and the pure electric longitudinal beam, a different part is made.

[0156] ③Lower anti-collision beam assembly 6, Fig. 14 is a front view of the lower anti-collision beam assembly 6, Fig. 15 is a top view of the lower anti-collision beam assembly 6, as shown in Fig. 14 and Fig. 15, the arc-shaped rectangular tube structure can meet the front guard modeling three-dimensional CAS curved surface, two groups of a total of four pull rivet bolts are provided on both sides to fix the front guard beam mounting and connecting outer plate to form a whole structure after being connected with the front anti-collision beam assembly 5, effectively increase the leg force area of the pedestrian and can improve the pedestrian protection score. Two rectangular energy absorption boxes are welded on both sides of the arc-shaped rectangular tube, a plurality of through holes are punched at the round corners of the rectangular tube to bend and weaken the effect of absorbing collision energy when the collision occurs, triangular mounting end plates are welded on the end faces of the rectangular tube, and the above welding forms the lower anti-collision beam assembly. There are three mounting holes on both sides of the anti-collision beam end plate, which are connected with the front subframe assembly to form a whole with the whole vehicle. Due to the difference in Y-direction installation distance of the range extender and the pure electric longitudinal beam, a different part is made.

[0157] (4) The right front longitudinal beam assembly 7, as shown in FIG. 17 and FIG. 18, is formed by welding the right front longitudinal beam body and the right front longitudinal beam cover plate assembly into a rectangular tube structure. The welded rectangular tube structure has a larger opening size at the front end Y than at the tail end, and the overall structure is an r-shaped structure. By increasing the opening size at the front end Y, the opening area is increased, thereby increasing the butt joint interface area of the front crash beam assembly 5 and the right front longitudinal beam assembly 7 (increasing the cross-sectional area and volume of the energy absorption box), thereby increasing the stress area and improving the energy absorption effect. The upper surface of the front R end face of the rectangular tube structure provides more welding area in the Y direction for the right front longitudinal beam wheel cover connecting beam assembly I to improve the strength of the welded structure. The right front longitudinal beam wheel cover connecting beam assembly I provides mounting and fixing points for the right side wing panel. The lower surface of the front R end face of the rectangular tube structure is welded to the lower surface of the right front longitudinal beam wheel cover connecting beam assembly I. The lower surface of the right front longitudinal beam wheel cover connecting beam assembly I is embedded with a sub-frame mounting nut seat M14x1.5x70, which is connected to the front sub-frame assembly through a bolt hole. The welded rectangular upper plane provides, in sequence, a compressor bracket cross beam base mounting hole, a high-pressure electric heater bracket mounting hole, a right front wheel cover assembly welding plane, and a welding point. The root of the rear end face of the rectangular structure is welded to the right front longitudinal beam support plate II and the front bumper triangular beam right connecting bracket. The right front longitudinal beam assembly, which includes the right front longitudinal beam support plate II and the front bumper triangular beam right connecting bracket welded at the root, has an eight-shaped structure after welding, which can effectively fit the upper part 12 of the front bumper body and the lower part 13 of the front bumper body, improve the stress area and make the stress uniform, and improve the structural strength and the transmission path of the collision force. The root of the rear end face of the rectangular structure is welded to the front sub-frame right rear mounting reinforcement plate I and the front sub-frame right rear mounting reinforcement plate II, which are then welded to the right door sill connecting plate to form the right front longitudinal beam assembly. The right front longitudinal beam assembly 7 is welded to the front bumper cross beam 4 through a groove buckle, and forms four welds and inclined supports with the inclined surface of the lower part 13 of the front bumper body. The right front longitudinal beam assembly is integrated with the right door sill connecting plate through welding. This buckle and four inclined surface support design can effectively maintain the strength and stiffness of the longitudinal beam in the X direction. Due to the differences in the right front wheel cover assembly between the extended range and the pure electric vehicle, and the change in the collision boundary (X direction space distance) caused by replacing the moving total, the right front longitudinal beam assembly is a different part.

[0158] 5. The left front longitudinal beam assembly 8, as shown in FIG. 19 and FIG. 20, is a rectangular tube structure formed by welding the left front longitudinal beam body and the left front longitudinal beam cover plate assembly. The welding structure has a larger opening size at the front end Y direction than at the tail end, and the overall structure is an r-shaped structure. By increasing the opening size at the front end Y direction, the opening area is increased, thereby increasing the butt joint interface area of the front crash beam assembly 5 and the left front longitudinal beam assembly (increasing the cross-sectional area and volume of the energy absorption box), and further increasing the stress area to improve the energy absorption effect. The upper surface of the front R end of the rectangular structure provides more welding area in the Y direction for the left front longitudinal beam wheel cover connecting beam assembly I to improve the strength of the welding structure. The left front longitudinal beam wheel cover connecting beam assembly I provides mounting and fixing points for the left fender. The lower surface of the front R end of the rectangular tube structure is welded to the lower surface of the left front longitudinal beam wheel cover connecting beam assembly I. The lower surface of the left front longitudinal beam wheel cover connecting beam assembly I is embedded with a subframe mounting nut seat M14x1.5x70, which is connected to the front subframe assembly through a bolt hole. The rectangular upper plane provides, in order, a compressor bracket cross beam base mounting hole, an electric compressor bracket mounting hole, a left front wheel cover assembly welding plane, and a welding point. The root of the rear end of the rectangular structure is welded to the left front longitudinal beam support plate II and the front bumper triangular beam left connecting bracket. The left front longitudinal beam assembly includes the left front longitudinal beam support plate II and the front bumper triangular beam left connecting bracket welded at the root, which forms an eight-shaped structure after welding, effectively adheres to the upper part 12 of the front bumper body and the lower part 13 of the front bumper body, improves the stress area and makes the stress uniform, and improves the structural strength and the transmission path of the collision force. The root of the rear end of the rectangular structure is welded to the front subframe left rear mounting reinforcement plate I and the front subframe left rear mounting reinforcement plate II, which are then conformally welded to the front bumper cross beam and the lower part 13 of the front bumper body, and are welded to the left rocker panel connecting plate to form the left front longitudinal beam assembly. The left front longitudinal beam assembly is welded to the front bumper cross beam 4 through a groove, and forms four welds and inclined supports with the inclined surface of the lower part 13 of the front bumper body, and is integrated by welding with the left rocker panel connecting plate. This design of buckling and four inclined surface supports can effectively maintain the strength and stiffness of the longitudinal beam in the X direction. Due to the differences in the left front wheel cover assembly between the extended range and the pure electric vehicle, and the change in the collision boundary (X direction space distance) caused by replacing the moving total, the left front longitudinal beam assembly is a different part.

[0159] ⑥Right front wheel cover assembly 9, Fig. 21 is a front view of the right front wheel cover assembly 9, Fig. 22 is a top view of the right front wheel cover assembly 9, as shown in Fig. 21 and Fig. 22, the right front shock absorber seat, right front wheel cover side stiffener, right front wheel cover rear end plate and right front shock absorber seat stiffener are welded together, the right front shock absorber seat is designed with a protruding package and a waist-shaped hole, a large round hole, a special triangular hole and a mounting bolt structure, the three evenly distributed waist-shaped mounting holes around the large round hole are fixed with the right front air spring assembly through bolts to play the role of connecting the upper vehicle body and the lower vehicle body, at the same time, the large round hole in the middle can ensure that the vehicle avoids the impact or interference between the right front air spring assembly and the right front wheel cover assembly during the process of passing pits or obstacles, etc. Form process abnormal sound and failure, the special triangular hole outside the round hole has the same effect as the round hole to avoid the impact or interference with the right upper front control arm assembly and the right upper rear control arm assembly, which can avoid the form process abnormal sound and failure. The three circular mounting holes in the large round hole are connected with the heat pump upper cross beam assembly through bolts to improve the torsional stiffness of the vehicle. The right front wheel cover assembly 9 is welded with the right front longitudinal beam assembly 7, the upper part 12 of the front baffle body and the front compartment right vertical plate body respectively to form a inverted U-shaped structure with lower sealing. Due to the difference between the front compartment steering machine X position caused by the difference between the total difference, the difference between the front wheel load and the total mass of the vehicle, the right front wheel cover assembly of the extended range and the pure electric vehicle is different.

[0160] ⑦Left front wheel cover assembly 10, Fig. 23 is a front view of the left front wheel cover assembly 10, Fig. 24 is a top view of the left front wheel cover assembly 10, as shown in Fig. 23 and Fig. 24, the left front shock absorber seat, left front wheel cover side stiffener, left front wheel cover rear end plate and left front shock absorber seat stiffener are welded together, the left front shock absorber seat is designed with a protruding package and a waist-shaped hole, a large round hole, a special triangular hole and a mounting bolt structure, the three evenly distributed waist-shaped mounting holes around the large round hole are fixed with the left front air spring assembly through bolts to play the role of connecting the upper vehicle body and the lower vehicle body, at the same time, the large round hole in the middle can ensure that the vehicle avoids the impact or interference between the left front air spring assembly and the left front wheel cover assembly during the process of passing pits or obstacles, etc. Form process abnormal sound and failure, the special triangular hole outside the round hole has the same effect as the round hole to avoid the impact or interference with the left upper front control arm assembly and the left upper rear control arm assembly, which can avoid the form process abnormal sound and failure. The three circular mounting holes in the large round hole are connected with the heat pump upper cross beam assembly through bolts to improve the torsional stiffness of the vehicle. The left front wheel cover assembly is welded with the left front longitudinal beam assembly 8, the upper part 12 of the front baffle body and the front compartment left vertical plate body respectively to form a inverted U-shaped structure with lower sealing. Due to the difference between the front compartment steering machine X position caused by the difference between the total difference, the difference between the front wheel load and the total mass of the vehicle, the left front wheel cover assembly of the extended range and the pure electric vehicle is different.

[0161] 8. Front end structure assembly 11, Fig. 25 is the front view of the front end structure assembly 11, Fig. 26 is the top view of the front end structure assembly 11, as shown in Fig. 25 and Fig. 26, the plastic frame is U-shaped in outer contour and V-shaped in inner contour, the two ends are thin-walled square with square hole and four mounting bolts, the front end structure assembly 11 is fixed in series with the front bumper beam assembly 5, the left front longitudinal beam assembly 8 and the right front longitudinal beam assembly 7 through bolts in the X direction; the direction hole structure in the middle of the front end structure assembly 11 can ensure the effective docking of the front bumper beam assembly with the left front longitudinal beam assembly and the right front longitudinal beam assembly; two fixing holes are designed in the middle of the front end structure assembly 11 to fix the middle support and connect with the middle of the front bumper beam assembly to support; there are a total of 10 holes on the upper surface of the front end structure assembly 11, six of which are in the middle, four are threaded holes and two are positioning holes, used for positioning and fixing the upper grille reinforcing bracket (indirectly fixing the front signal lamp assembly and the front bumper assembly), the two groups of holes on both sides fix the right front headlamp assembly and the left front headlamp assembly respectively. The front end structure assembly forms a triangular fixing structure through the two groups of eight bolts at both ends and the two bolts in the middle, which can effectively ensure the installation precision and position of the right front headlamp assembly, the left front headlamp assembly, the front signal lamp assembly and the front bumper assembly. Due to the difference in longitudinal beam Y direction spacing, the front end structure assembly of the extended range vehicle and the pure electric vehicle is different.

[0162] 9. Front apron body upper part 12, Fig. 28 is the front view of the front apron body upper part 12, Fig. 29 is the top view of the front apron body upper part 12, as shown in Fig. 28 and Fig. 29, sheet metal stamping is adopted, the two sides are bent into obtuse angle structure, the body is provided with multiple installation and process holes, from left to right, battery positive wire harness round hole, process special-shaped lightening and reinforcing structure hole, steering intermediate shaft assembly round hole, integrated brake controller assembly round hole, automatic three-zone air conditioning HVAC assembly vertical square water pipe through hole, automatic three-zone air conditioning HVAC assembly horizontal waist-shaped air conditioning pipe through hole, automatic three-zone air conditioning HVAC assembly horizontal square air inlet duct through hole and a number of process holes and mounting holes. Due to the difference in the position of the intermediate shaft of the steering system, the front apron body upper part of the extended range vehicle and the pure electric vehicle is different.

[0163] 10. Front apron body lower part 13, Fig. 30 is the front view of the front apron body lower part 13, Fig. 31 is the top view of the front apron body lower part 13, as shown in Fig. 30 and Fig. 31, the upper part is designed with two pull-riveting welding holes and mounting holes, which are welded and fixed with the front apron cross beam 4 through pull-riveting, the strength can be improved and the risk of cracking can be reduced by adding the middle welding point, the two sides also adopt the same bending angle as the front apron body upper part 12, which is triangularly bent on both sides, which can ensure the welding of the front apron body lower part 13 and the front apron body upper part 12, the bending structure on both sides of the welding body can improve the local deformation of the extrusion force transmitted by the right front longitudinal beam assembly and the left front longitudinal beam assembly when the front apron is extruded.

[0164] Front bumper left support plate 14, Fig. 32 is the front view of the front bumper left support plate 14, Fig. 33 is the front view of the front bumper left support plate 14, as shown in Fig. 32 and Fig. 33, using a circular arc triangle design, the cross section Z direction height uniform excessive increase, in the welding and fastening with the left front vertical plate assembly 16 Z direction cross section maximum, in the welding with the most right side of the front bumper body lower part 13 Z direction cross section minimum, with the front bumper cross beam 4, front bumper body lower part 13 staggered welding to form a welding body. Here the triangular welding body in front and left side when extruded can play a role in strengthening the structure and reducing the risk of extrusion deformation cracking. Due to the difference in the width of the longitudinal beam, the front bumper left support plate of the extended range and the pure electric vehicle is different.

[0165] Front bumper right support plate 15, Fig. 34 is the front view of the front bumper right support plate 15, Fig. 35 is the front view of the front bumper right support plate 15, as shown in Fig. 34 and Fig. 35, using a circular arc triangle design, the cross section Z direction height uniform excessive increase, in the welding and fastening with the right front vertical plate assembly 17 Z direction cross section maximum, in the welding with the most left side of the front bumper body lower part 13 Z direction cross section minimum, with the front bumper cross beam 4, front bumper body lower part 13 staggered welding to form a welding body. Here the triangular welding body in front and right side when extruded can play a role in strengthening the structure and reducing the risk of extrusion deformation cracking. Due to the difference in the width of the longitudinal beam, the front bumper right support plate of the extended range and the pure electric vehicle is different.

[0166] Left front vertical plate assembly 16, Fig. 36 is the front view of the left front vertical plate assembly 16, Fig. 37 is the front view of the left front vertical plate assembly 16, as shown in Fig. 36 and Fig. 37, the inside of the car (Fig. 37 upper) from top to bottom in turn with the front bumper lower cross beam assembly 18, front bumper body upper part 12, front bumper body lower part 13, front bumper left support plate assembly welding, the outside from top to bottom in turn with the left front wheel cover assembly 10, left front wheel cover upper reinforcing beam outer plate middle assembly, left door sill assembly 27, left side wall assembly 1 welding. Left front vertical plate assembly 16 in the top surface using the inside edge structure with the front bumper lower cross beam assembly XZ plane normal pressure welding, left front vertical plate assembly in the side using the outside edge structure with the left side wall assembly 1 positive Y direction buckling welding. The body through the process round hole and rectangular hole and the reinforcing rib structure to increase the strength and reduce the weight. Front bumper left support plate 14 is welded on the inside of the left front vertical plate assembly 16, which plays a role in strengthening the left front vertical plate assembly 16.

[0167] Right front vertical plate assembly 17, Fig. 38 is the front view of the right front vertical plate assembly 17, Fig. 39 is the top view of the right front vertical plate assembly 17, as shown in Fig. 38 and Fig. 39, the inner side from top to bottom in turn with the front windshield lower cross beam assembly 18, front baffle body upper part 12, front baffle body lower part 13, front baffle right support plate assembly welding, the outer side from top to bottom in turn with the right front wheel cover assembly 9, right front wheel cover upper stiffener outer plate middle assembly, right door sill assembly 28, right side wall assembly 2 welding. Right front vertical plate assembly 17 in the top surface with the front windshield lower cross beam assembly using the inward flanging structure XZ plane normal pressure welding, right front vertical plate assembly in the side with the right side wall assembly using the outward flanging structure positive Y direction buckling welding. The body through the process round hole and rectangular hole and stiffener structure to increase the strength and reduce the weight. Front baffle right support plate 15 is welded on the inner side of the right front vertical plate assembly 17, which plays a role in strengthening the right front vertical plate assembly 17.

[0168] Front windshield lower cross beam assembly 18, Fig. 40 is the front view of the front windshield lower cross beam assembly 18, Fig. 41 is the top view of the front windshield lower cross beam assembly 18, as shown in Fig. 40 and Fig. 41, using a semicircular structure, both sides of the end face are welded with the left front vertical plate assembly 16 and the right front vertical plate assembly 17, and the lower end face is welded with the front baffle body upper part 12. The upper surface and inclined surface of the body have multiple stiffeners.

[0169] (202) Front floor assembly, Fig. 42 is the front view of the front floor assembly, Fig. 43 is the front view of the front floor assembly, Fig. 56 is the isometric view of the front floor assembly, as shown in Fig. 42 and Fig. 43 and Fig. 56, including: front longitudinal beam upper cover plate 19, front baffle and middle channel connecting plate 20, front seat front cross beam assembly 21, battery front middle mounting bracket 22, airbag ECU mounting plate 23, front seat rear cross beam assembly 24, front floor door sill assembly 25, front floor rear body 26, left door sill assembly 27, right door sill assembly 28, left door sill stiffener assembly 29, right door sill stiffener assembly 30.

[0170] For pure electric and extended range vehicles, the front seat front cross beam assembly 21, the front floor door sill assembly 25, the left door sill assembly 27, the right door sill assembly 28, the left door sill stiffener assembly 29, and the right door sill stiffener assembly 30 are common; however, the front longitudinal beam upper cover plate 19, the front baffle and middle channel connecting plate 20, the battery front middle mounting bracket 22, the airbag ECU mounting plate 23, the front seat rear cross beam assembly 24, and the front floor rear body 26 are different.

[0171] ①Front longitudinal beam upper cover plate 19, Fig. 44 is the front view of the front longitudinal beam upper cover plate 19, Fig. 45 is the top view of the front longitudinal beam upper cover plate 19, as shown in Fig. 44 and Fig. 45, the V-shaped bending design is adopted, the bending angle is the same as the lower part 13 of the front bumper body, the bending inclined surface of the front longitudinal beam upper cover plate is welded with the lower part 13 of the front bumper body, the flat surface of the front longitudinal beam upper cover plate is welded with the front floor body, and the front longitudinal beam upper cover plate is welded with the front bumper body and the front floor body to form a whole structure, and the Y direction welding positions of the front longitudinal beam upper cover plate on both sides are respectively aligned with the right front longitudinal beam assembly 7 and the left front longitudinal beam assembly 8 in Y direction, so that the extrusion force of the right front longitudinal beam assembly and the left front longitudinal beam assembly can be effectively transmitted from the engine compartment to the middle and rear areas of the vehicle body. For range extended vehicles, the front longitudinal beam upper cover plate 19 adopts a non-through beam, which is shaped like a "7" character; for pure electric vehicles, the front longitudinal beam upper cover plate 19 is a straight-through beam, the difference here is that the structure of the front crash requirement is strengthened.

[0172] ②Front bumper and middle channel connecting plate 20, Fig. 46 is the front view of the front bumper and middle channel connecting plate 20, Fig. 47 is the top view of the front bumper and middle channel connecting plate 20, as shown in Fig. 46 and Fig. 47, the cross section adopts W type structure, the front bumper and middle channel connecting plate 20 is welded on the front floor body, the rear end cross section of the front bumper and middle channel connecting plate 20 is welded with the front seat front cross beam assembly 21, which strengthens the bearing capacity of the front floor body to the front end extrusion, and forms the third transmission path of the whole vehicle with the left front longitudinal beam assembly 9 and the right front longitudinal beam assembly 7. The groove in the middle of the W shape can increase the strength of the welding structure with the front floor body, and the rear end plane of the front bumper and middle channel connecting plate 20 provides four nut holes for fixing the combined inertial navigation system, and the front end plane of the front bumper and middle channel connecting plate 20 provides two pull riveting welding studs for fixing the whole vehicle domain controller support. For range extended vehicles, the front bumper and middle channel connecting plate 20 is a closed structure; for pure electric vehicles, the front bumper and middle channel connecting plate 20 is lightened in process, and only the welding flange for docking is reserved for the part welded with the front bumper body lower part, and the rest of the structure is hollowed out. The difference here is that the structure of the front crash requirement is strengthened.

[0173] ③Front seat front cross beam assembly 21, Fig. 48 is the front view of the front seat front cross beam assembly 21, Fig. 49 is the bottom view of the front seat front cross beam assembly 21, as shown in Fig. 48 and Fig. 49, the cross section adopts C-shaped groove with flange structure, which is buckled on the front floor body and welded, and the front end face is spliced and welded with the front longitudinal beam upper cover plate 19 and the front bumper and middle channel connecting plate 20. This cross beam can improve the extrusion capacity of the vehicle body side, and can transmit the extrusion force of three longitudinal paths. And it can provide four fixing points for the left and right front seats.

[0174] (4) The battery front mounting bracket 22, Fig. 50 is the front view of the battery front mounting bracket 22, Fig. 51 is the left view of the battery front mounting bracket 22, as shown in Fig. 50 and Fig. 51, the bottom end face is welded on the front floor body, the rear end face is welded with the front seat rear cross beam assembly 24, the internal cavity has a welded nut for fixing the power battery pack assembly, the middle internal cross beam in the power battery pack assembly is combined with the lower vehicle body by bolts to form a rigid body to improve the side surface anti-extrusion capability. For extended range vehicles, the middle of the battery front mounting bracket 22 has a groove for reinforcement, and for pure electric vehicles, the middle of the battery front mounting bracket 22 has no groove, the difference is that the extended range battery is reinforced.

[0175] (5) The airbag ECU mounting plate 23, Fig. 52 is the front view of the airbag ECU mounting plate 23, Fig. 23 is the left view of the airbag ECU mounting plate 23, as shown in Fig. 52 and Fig. 53, the bottom end face is welded on the front floor body, the rear end face is welded with the front seat rear cross beam assembly 24, the upper surface has five bosses and two grooves, the front three bosses correspond to three welded nuts for fixing the airbag controller assembly, and the rear two bosses correspond to two welded nuts for fixing the armrest box bracket assembly. For the airbag ECU mounting plate 23, the extended range is larger than the pure electric in width and height dimensions.

[0176] (6) The front seat rear cross beam assembly 24, Fig. 54 is the front view of the front seat rear cross beam assembly 24, Fig. 55 is the bottom view of the front seat rear cross beam assembly 24, as shown in Fig. 54 and Fig. 55, the bottom end face is welded on the front floor body, the two side end faces are welded with the inner surfaces of the left door sill assembly 27 and the right door sill assembly 28 respectively, and the front end faces are welded with the four battery front mounting brackets 22 and the airbag ECU mounting plate 23 respectively. The upper surface provides two sets of four welded nuts and four positioning pins respectively for fixing the left and right front seat assemblies. The front seat rear cross beam assembly and the front seat front cross beam assembly together bear the side extrusion and strengthen the structure strength of the front floor body, and are used for fixing and bearing the weight of the seat, passenger, battery, fuel tank, etc. For the front seat rear cross beam assembly 24, the length of the reinforcing plate on both sides of the rear cross beam is different, and the length of the extended range vehicle is longer than that of the pure electric vehicle, and the reinforcing structure is strengthened.

[0177] (7) The front floor sill assembly 25, Fig. 57 is the front view of the front floor sill assembly 25, as shown in Fig. 57, the upper surface is sequentially welded with two front longitudinal beam upper cover plates 19, a front baffle and a middle channel connecting plate 20, a front seat front cross beam assembly 21, four battery front mounting brackets 22, an airbag ECU mounting plate 23, and a front seat rear cross beam assembly 24 from front to rear, the two side end faces are sequentially welded with a left front vertical plate assembly 16, a right front vertical plate assembly 17, a left door sill assembly 27, and a right door sill assembly 28, the front end face is overlapped with the lower part 13 of the front baffle body and is rivet welded, and the rear end face is overlapped with the rear part 26 of the front floor body and is rivet welded. There are Z-shaped upward 90° angle bending flanges on both sides.

[0178] 8. The front floor rear body 26, Fig. 58 is the front floor rear body 26 of the front floor rear body 26, as shown in Fig. 58, the front end surface is overlapped and rivet welded with the front floor rocker assembly 25, the two side end surfaces are respectively welded with the left rocker assembly 27, the right rocker assembly 28, the left rocker inner plate rear assembly, the right rocker inner plate rear assembly, the rear end surface is pressure welded with the middle floor cross beam assembly, the left rear longitudinal beam body, the right rear longitudinal beam body. The front floor rear body is Z-shaped bending and flanging at the rear end, and the flanging height can be adjusted to adapt to the different requirements of EV battery and REEV fuel tank in Z direction height size, and the two sides have Z direction upward 90° angle bending flanging. For the front floor rear body 26, the range and pure electricity here are different due to the difference between the fuel tank and the battery, resulting in the difference in Z direction height, and the range is higher in Z direction, which matches the middle floor cross beam body of the rear floor assembly.

[0179] 9. The left rocker assembly 27, Fig. 59 is a schematic diagram of the left rocker assembly 27, as shown in Fig. 59, the left rocker connecting plate (with flanging structure and left side wall assembly 1 at the lower left corner) is nested and pressure welded with the left rocker inner plate body (C-shaped groove with two sides 90° outer flanging bending structure, and two 46° bending structures in the middle), the welded structure is reinforced by adding a left rocker inner plate reinforcement plate I at the second flanging and the joint, and there are four holes in the lower surface of the C-shaped groove of the left rocker inner plate body, corresponding to the welding of four battery pack mounting reinforcement plate assemblies (with welded nuts for fixing the side surface of the power battery pack assembly), and the range and pure electricity are universal at the single side four fixing points. The lower surface end of the welded body is welded with an assembly lifting device reinforcement plate.

[0180] 10. The right rocker assembly 28, Fig. 59 is a schematic diagram of the right rocker assembly 28, as shown in Fig. 60, the right rocker connecting plate (with flanging structure and right side wall assembly 2 at the lower right corner) is nested and pressure welded with the right rocker inner plate body (C-shaped groove with two sides 90° outer flanging bending structure, and two 46° bending structures in the middle), the welded structure is reinforced by adding a right rocker inner plate reinforcement plate I at the second flanging and the joint, and there are four holes in the lower surface of the C-shaped groove of the right rocker inner plate body, corresponding to the welding of four battery pack mounting reinforcement plate assemblies (with welded nuts for fixing the side surface of the power battery pack assembly), and the range and pure electricity are universal at the single side four fixing points. The lower surface end of the welded body is welded with an assembly lifting device reinforcement plate.

[0181] The left door sill reinforcement beam assembly 29 is shown in Fig. 61. As shown in Fig. 61, the structure is a rectangular rigid body with two reinforcing vertical rib plates, and the end is cut into a 45° angle. Four door sill connecting plates are evenly distributed on the lower surface. The middle two door sill connecting plates are welded on the lower surface of the left door sill reinforcement beam assembly by pull riveting. The outer two door sill connecting plates are fixed on the lower surface of the left door sill reinforcement beam assembly by bolts. The left door sill reinforcement beam assembly is aligned and welded with the second flange of the left door sill assembly 27 through the four door sill connecting plates. It is fixed in the front upper area of the left door sill assembly side by the fixing hole and fixing bolt in the front part.

[0182] The right door sill reinforcement beam assembly 30 is shown in Fig. 62. As shown in Fig. 62, the structure is a rectangular rigid body with two reinforcing vertical rib plates, and the end is cut into a 45° angle. Four door sill connecting plates are evenly distributed on the lower surface. The middle two door sill connecting plates are welded on the lower surface of the right door sill reinforcement beam assembly by pull riveting. The outer two door sill connecting plates are fixed on the lower surface of the right door sill reinforcement beam assembly by bolts. The right door sill reinforcement beam assembly is aligned and welded with the second flange of the right door sill assembly 28 through the four door sill connecting plates. It is fixed in the front upper area of the right door sill assembly side by the fixing hole and fixing bolt in the front part.

[0183] (203) The rear floor assembly is shown in Fig. 63 and Fig. 72. As shown in Fig. 63 and Fig. 72, it includes: the middle floor assembly 31, the right door sill inner plate rear assembly 32, the left door sill inner plate rear assembly 33, the left rear longitudinal beam assembly 34, the right rear longitudinal beam assembly 35, the rear floor body assembly 36, the rear floor left rear connecting plate 37, the rear floor storage box assembly 38, the rear floor right rear connecting plate 39, the rear floor rear connecting plate 40, the rear wall inner plate assembly 41, the rear wall outer plate assembly 42, and the rear anti-collision beam assembly 43.

[0184] For pure electric and extended range vehicles, the right door sill inner plate rear assembly 32, the left door sill inner plate rear assembly 33, the rear floor body assembly 36, the rear floor left rear connecting plate 37, the rear floor rear connecting plate 40, the rear wall inner plate assembly 41, the rear wall outer plate assembly 42, and the rear anti-collision beam assembly 43 are common; while the middle floor assembly 31, the left rear longitudinal beam assembly 34, the right rear longitudinal beam assembly 35, the rear floor storage box assembly 38, and the rear floor right rear connecting plate 39 are different.

[0185] ①Middle floor assembly 31, Fig. 64 is a front view of the middle floor assembly 31, Fig. 65 is a bottom view of the middle floor assembly 31, as shown in Fig. 64 and Fig. 65, the middle floor beam assembly with the lower flange and the upper flange, the lower flange and the front floor rear body 26 flange welding, the upper flange and the middle floor body assembly welding, the middle floor beam assembly both sides have two holes through the flow drill screw respectively fixed in the left rear longitudinal beam body and the right rear longitudinal beam body castings front end flange, the middle floor body assembly both sides are respectively welded and flow drill screw fastening with the left rear longitudinal beam body and the right rear longitudinal beam body, the middle floor assembly inclined flange and the rear floor body assembly and the left rear longitudinal beam body, the right rear longitudinal beam body both sides are respectively welded and flow drill screw fastening. The main difference between the extended range and the pure electric is that the fuel tank Z direction height increases, which leads to the Z direction height of the first flange of the middle floor assembly to increase to match the oil tank arrangement.

[0186] ②Right door sill inner plate rear assembly 32, Fig. 66 is a front view of the right door sill inner plate rear assembly 32, Fig. 67 is a top view of the right door sill inner plate rear assembly 32, as shown in Fig. 66 and Fig. 67, embedded into the bayonet inside the right rear longitudinal beam body for welding, the right door sill inner plate rear assembly external flange and the right side wall assembly 2 internal flange butt welding, the lower plane of the right door sill inner plate rear assembly 32 is welded with a lifting bracket.

[0187] ③Left door sill inner plate rear assembly 33, Fig. 68 is a front view of the left door sill inner plate rear assembly 33, Fig. 69 is a top view of the left door sill inner plate rear assembly 33, as shown in Fig. 68 and Fig. 69, embedded into the bayonet inside the left rear longitudinal beam body for welding, the left door sill inner plate rear assembly external flange and the left side wall assembly 1 internal flange butt welding, the lower plane of the left door sill inner plate rear assembly 33 is welded with a lifting bracket.

[0188] (4) Left rear longitudinal beam assembly 34, Figure 70 is a schematic diagram of the left rear longitudinal beam assembly 34, as shown in Figure 70, the left rear longitudinal beam body front section longitudinal beam outer clamping groove and the left door sill inner plate rear assembly 33 after the welding, screw connection, clamping groove upper surface has installation hole through bolt connection left door sill inner plate rear assembly 33 upper inner surface of the projection welding nut, the lower clamping groove is inclined surface structure is more beneficial to absorb tolerance, make the left rear longitudinal beam body and left door sill inner plate rear assembly 33 more easily buckled together, the left rear longitudinal beam body lower clamping groove inclined surface and the left door sill inner plate rear assembly 33 inclined surface is connected through welding, the honeycomb structure inside the longitudinal beam can effectively increase the strength and reduce the weight and cost, at the same time provides the installation screw hole in the side left door sill inner plate rear assembly 33 through bolt and left rear longitudinal beam body inside honeycomb structure screw hole connection fastening. The left rear longitudinal beam body middle section is semicircular arc structure, avoid left rear tire envelope meet the clearance requirements of vehicle driving conditions and tire, the inside adopts honeycomb structure to reduce weight and provides the fixing point of wheel cover, left rear longitudinal beam body rear section longitudinal beam is used for connecting rear crash beam assembly and supporting rear floor left rear connecting plate, rear floor storage box assembly. The left rear longitudinal beam assembly 34 difference in the body front section longitudinal beam and middle floor assembly cooperation place, because the Z direction height of the middle floor assembly is higher here in order to assemble the extended range fuel tank, resulting in the welding flange height difference of the body front section longitudinal beam.

[0189] (5) Right rear longitudinal beam assembly 35, Figure 71 is a schematic diagram of the right rear longitudinal beam assembly 35, as shown in Figure 71, the right rear longitudinal beam body front section longitudinal beam outer clamping groove and the right door sill inner plate rear assembly 32 after the welding, screw connection, clamping groove upper surface has installation hole through bolt connection right door sill inner plate rear assembly 32 upper inner surface of the projection welding nut, the lower clamping groove is inclined surface structure is more beneficial to absorb tolerance, make the right rear longitudinal beam body and right door sill inner plate rear assembly 32 more easily buckled together, the right rear longitudinal beam body lower clamping groove inclined surface and the right door sill inner plate rear assembly inclined surface is connected through welding, the honeycomb structure inside the longitudinal beam can effectively increase the strength and reduce the weight and cost, at the same time provides the installation screw hole in the side right door sill inner plate rear assembly 32 through bolt and right rear longitudinal beam body inside honeycomb structure screw hole connection fastening. The right rear longitudinal beam body middle section is semicircular arc structure, avoid right rear tire envelope meet the clearance requirements of vehicle driving conditions and tire, the inside adopts honeycomb structure to reduce weight and provides the fixing point of wheel cover, right rear longitudinal beam body rear section longitudinal beam is used for connecting rear crash beam assembly 43 and supporting rear floor right rear connecting plate 39, rear floor storage box assembly 38. The right rear longitudinal beam assembly 35 difference in the body front section longitudinal beam and middle floor assembly cooperation place, because the Z direction height of the middle floor assembly is higher here in order to assemble the extended range fuel tank, resulting in the welding flange height difference of the body front section longitudinal beam, the body middle section is semicircular arc structure because the extended range increases the fuel system, here provides activated carbon tank assembly, fuel pipe with accessories assembly fixed after changing into circular arc and vertical structure combination brings difference.

[0190] (6) Rear floor body assembly 36, Fig. 73 is a front view of the rear floor body assembly 36, Fig. 74 is a top view of the rear floor body assembly 36, as shown in Fig. 73 and Fig. 74, the front end of the bending surface and the rear end of the bending surface of the middle floor assembly 31 lap welding and flow drilling screw fastening, the two sides are respectively lap on the inside of the left rear longitudinal beam assembly 34 and the right rear longitudinal beam assembly 35 and through welding and flow drilling screw fastening, the rear end surface provides support and fixation for the rear floor storage box assembly 38. The rear floor body assembly 36 forms a C-ring stiffener through the welding of the rear floor upper cross beam left connecting plate assembly on the left rear longitudinal beam body and the rear floor upper cross beam right connecting plate assembly on the right rear longitudinal beam body, and the rear floor upper cross beam body on the floor upper cross beam body, which improves the torsional strength of the vehicle body at the rear.

[0191] (7) Rear floor left connecting plate 37, Fig. 75 is a front view of the rear floor left connecting plate 37, Fig. 76 is a top view of the rear floor left connecting plate 37, as shown in Fig. 75 and Fig. 76, the front end of the bending edge is lap on the left rear longitudinal beam body and connected through welding, the side edge is lap on the left rear longitudinal beam body and fastened through bolt (shared fastening point with the left side of the rear floor storage box assembly), the rear end of the bending edge is welded with the rear wall inner plate assembly 41. The rear floor left connecting plate 37 fixes the 12V lithium battery, has a reinforcing groove in the middle part, and has a wire harness through hole.

[0192] (8) Rear floor storage box assembly 38, Fig. 77 is a schematic view of the rear floor storage box assembly 38, as shown in Fig. 77, the front end of the bending edge is lap on the upper surface of the rear floor body assembly 36 and connected through bolt, the two side edges are respectively lap on the upper surface of the rear floor left connecting plate 37 and the rear floor right connecting plate 39 and connected through bolt, the rear end of the bending edge is lap on the upper surface of the rear floor rear connecting plate 40 and connected through bolt.

[0193] (9) Rear floor right connecting plate 39, Fig. 78 is a front view of the rear floor right connecting plate 39, Fig. 79 is a top view of the rear floor right connecting plate 39, as shown in Fig. 78 and Fig. 79, the front end of the bending edge is lap on the right rear longitudinal beam body and connected through welding, the side edge is lap on the right rear longitudinal beam body and fastened through bolt (shared fastening point with the right side of the rear floor storage box assembly), the rear end of the bending edge is welded with the rear wall inner plate assembly 41. The rear floor right connecting plate 39 fixes the subwoofer, and has a reinforcing cross rib.

[0194] (10) Rear floor rear connecting plate 40, Fig. 80 is a front view of the rear floor rear connecting plate 40, Fig. 81 is a top view of the rear floor rear connecting plate 40, as shown in Fig. 80 and Fig. 81, the two side end bottom planes are respectively lap on the upper planes of the rear floor left connecting plate 37 and the rear floor right connecting plate 39 and connected through bolt, the rear end of the bending edge is welded with the rear end of the bending edge of the rear floor left connecting plate 37 and the rear floor right connecting plate 39.

[0195] Rear inner panel assembly 41, Fig. 82 is a front view of the rear inner panel assembly 41, Fig. 83 is a top view of the rear inner panel assembly 41, as shown in Fig. 82 and Fig. 83, the inner surface is respectively welded with the rear end face of the rear floor left rear connecting plate 37, the rear floor rear connecting plate 40, the rear floor right rear connecting plate 39, the left side is clamped between the left rear longitudinal beam assembly 34 and the rear bumper beam assembly 43 through bolted connection, the right side is clamped between the right rear longitudinal beam assembly 35 and the rear bumper beam assembly 43 through bolted connection.

[0196] Rear outer panel assembly 42, Fig. 84 is a schematic diagram of the rear outer panel assembly 42, as shown in Fig. 84, the upper and lower sides are provided with two flange structures, the first flange is used to strengthen the body strength, the second flange is respectively welded with the flange of the rear inner panel assembly 41, the middle groove surface is welded with four rear bumper upper fixed supports for fixing the rear bumper assembly, the left side of the welded body of the rear inner panel assembly 41 and the rear outer panel assembly 42 is clamped between the left rear longitudinal beam assembly 34 and the rear bumper beam assembly 43 through bolted connection, the right side is clamped between the right rear longitudinal beam assembly 35 and the rear bumper beam assembly 43 through bolted connection.

[0197] Rear bumper beam assembly 43, Fig. 85 is a schematic diagram of the rear bumper beam assembly 43, as shown in Fig. 85, it is welded by the rear bumper beam left mounting plate (welding rear bumper left mounting bracket), the rear bumper beam right mounting plate (welding rear bumper right mounting bracket), the rear bumper beam upper energy absorption box, the rear bumper beam lower energy absorption box, the rear bumper beam body (welding rear bumper left lower mounting bracket); the rear bumper beam upper energy absorption box and the rear bumper beam lower energy absorption box are butt welded to form a welded body, and are welded with the rear bumper beam left mounting plate and the rear bumper beam right mounting plate, the two welded bodies are welded inside the rear bumper beam body respectively, the waist-shaped hole and the circular hole are opened on the upper and lower surfaces of the rear bumper beam upper energy absorption box and the rear bumper beam lower energy absorption box, which can deform and absorb energy when the rear part is extruded.

[0198] (3) For the outer cover, Fig. 86 is a front view of the outer cover, Fig. 87 is a top view of the outer cover, Fig. 88 is a left view of the outer cover, Fig. 89 is an isometric view of the outer cover, as shown in Fig. 86, Fig. 87, Fig. 88 and Fig. 89, it contains front windshield glass 44, panoramic sunroof glass 45, plastic tailgate assembly 46, rear windshield glass 47, left front door sheet metal assembly 48, left front side door glass assembly 49, left rear door sheet metal assembly 50, left rear side door glass assembly 51, right front door sheet metal assembly 52, right front side door glass assembly 53, right rear door sheet metal assembly 54, left rear side door glass assembly 55.

[0199] For pure electric and extended range cars, the front windshield glass 44, panoramic sunroof glass 45, plastic tailgate assembly 46, rear windshield glass 47, left front door metal assembly 48, left front side door glass assembly 49, left rear door metal assembly 50, left rear side door glass assembly 51, right front door metal assembly 52, right front side door glass assembly 53, right rear door metal assembly 54, left rear side door glass assembly 55 are all universal.

[0200] ① The front windshield glass 44 has a rubber strip pressed on the lower edge of the front windshield lower cross beam assembly 18, and rubber strips are pressed on the inner flanges of the A-pillar metal of the left side wall assembly 1 and the right side wall assembly 2 respectively; the upper edge of the front windshield glass has a rubber strip pressed on the upper surface of the welding cavity (the inner plate of the front top cross beam is welded with the front top cross beam assembly to form a welding cavity), and the glass is fixed after being buckled to the upper surface and fixed with adhesive, so the front windshield glass can be a universal part.

[0201] ② The panoramic sunroof glass 45 has a rubber strip pressed on the rear upper surface of the welding cavity (the inner plate of the front top cross beam is welded with the front top cross beam assembly to form a welding cavity), the inner metal flange of the A-pillar to C-pillar of the left side wall assembly 1, the inner metal flange of the A-pillar to C-pillar of the right side wall assembly 2, and the upper surface of the welding cavity (the rear top cross beam assembly is welded with the rear top cross beam inner plate to form a welding cavity), so the panoramic sunroof glass can be a universal part.

[0202] ③ The plastic tailgate assembly 46 has a rubber strip at the top to cooperate with the welding cavity (the rear top cross beam assembly is welded with the rear top cross beam inner plate to form a welding cavity), a rubber strip on the left side to cooperate with the welding body of the left side wall assembly 1 (left rear water channel body, left rear tail lamp mounting plate assembly), and a rubber strip on the right side to cooperate with the welding body of the right side wall assembly 2 (right rear water channel body, right rear tail lamp mounting plate assembly), so the plastic tailgate assembly can be a universal part.

[0203] ④ The rear windshield glass 47 has a rubber strip pressed on the inner flange of the plastic tailgate assembly 46, so the rear windshield glass can be a universal part.

[0204] ⑤ The left front door metal assembly 48 can be a universal part because it cooperates with the left side wall assembly 1 and the cooperation boundary is completely consistent.

[0205] ⑥ The left front side door glass assembly 49 can be a universal part because it cooperates with the left front door metal assembly 48 and the left side wall assembly 1, and the cooperation boundary is completely consistent.

[0206] 7. Left rear door panel assembly 50, because it cooperates with left side wall assembly 1, the cooperation boundary is completely consistent, so the left rear door panel assembly can be a universal part.

[0207] 7. Left rear door panel assembly 50, because it cooperates with left side wall assembly 1, the cooperation boundary is completely consistent, so the left rear door panel assembly can be a universal part.

[0208] 7. Left rear door panel assembly 50, because it cooperates with left side wall assembly 1, the cooperation boundary is completely consistent, so the left rear door panel assembly can be a universal part.

[0209] 7. Left rear door panel assembly 50, because it cooperates with left side wall assembly 1, the cooperation boundary is completely consistent, so the left rear door panel assembly can be a universal part.

[0210] 7. Left rear door panel assembly 50, because it cooperates with left side wall assembly 1, the cooperation boundary is completely consistent, so the left rear door panel assembly can be a universal part.

[0211] 7. Left rear door panel assembly 50, because it cooperates with left side wall assembly 1, the cooperation boundary is completely consistent, so the left rear door panel assembly can be a universal part.

[0212] The vehicle body assembly shared by the pure electric and extended range vehicles provided in the embodiment can match two different power systems, i.e., the extended range and pure electric power systems, and through the universal lower vehicle body structure, the upper vehicle body structure can be shared, and the upper vehicle body outer cover can be shared.

[0213] The vehicle body assembly shared by the pure electric and extended range vehicles provided in the embodiment can match two different power systems, i.e., the extended range and pure electric power systems, and through the universal lower vehicle body structure, the upper vehicle body structure can be shared, and the upper vehicle body outer cover can be shared.

[0214] Embodiment 2

[0215] The embodiment 2 of the present application provides a pure electric vehicle.

[0216] The embodiment provides a pure electric vehicle, as shown in Figure 90, which adopts the vehicle body assembly shared by the pure electric vehicle and the extended-range vehicle as described in the embodiment one.

[0217] Embodiment 3

[0218] The embodiment 3 of the present application provides an extended-range vehicle.

[0219] The embodiment provides an extended-range vehicle, as shown in Figure 91, which adopts the vehicle body assembly shared by the pure electric vehicle and the extended-range vehicle as described in the embodiment one.

[0220] The above merely provides the preferred embodiments of the present application but not for limiting the present application, and for the person skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle body assembly common to a pure electric vehicle and a range-extended electric vehicle, characterized by: The front seat front cross beam assembly, the left door sill assembly, the right door sill assembly and the front floor sill assembly are included. The cross section of the front seat front cross beam assembly adopts a C-shaped groove with a flange structure, is buckled on the front floor body and welded, and the front end surface is spliced and welded with the front longitudinal beam upper cover plate, the front baffle and the middle channel connecting plate. The left door sill assembly and the right door sill assembly are composed of a sill connecting plate and a sill inner plate body through nested compression welding; the sill connecting plate is a flange structure and is butt welded with the left side wall assembly or the right side wall assembly; the sill inner plate body is a C-shaped groove, and a plurality of holes are formed in the lower surface to correspond to a plurality of battery pack mounting reinforcement plate assemblies. The front floor sill assembly is provided with a Z-direction upward 90° angle bending flange on both sides, and the end faces of the two sides are sequentially welded with the left front vertical plate assembly, the right front vertical plate assembly, the left door sill assembly and the right door sill assembly.

2. The common body assembly for a pure electric and extended-range vehicle of claim 1, wherein: The left door sill reinforcement beam assembly and the right door sill reinforcement beam assembly are also included. The lower surfaces of the left door sill reinforcement beam assembly and the right door sill reinforcement beam assembly are uniformly provided with a plurality of sill connecting plates to be aligned and welded with the flanges of the left door sill assembly or the right door sill assembly.

3. The common body assembly for a pure electric and extended-range vehicle of claim 1, wherein: The upper surface of the front floor sill assembly is sequentially welded from front to back with two front longitudinal beam upper cover plates, a front baffle and a middle channel connecting plate, a front seat front cross beam assembly, four front battery mounting supports, an airbag ECU mounting plate and a front seat rear cross beam assembly. The front end face of the front floor sill assembly is lap riveted and welded with the lower part of the front baffle body, and the rear end face is lap riveted and welded with the rear part of the front floor body.

4. The common body assembly for a pure electric and extended-range vehicle of claim 1, wherein: The left front vertical plate assembly, the right front vertical plate assembly and the front underhood cross beam assembly are also included. The lower end face of the front underhood cross beam assembly is X-directionally welded with the upper part of the front baffle body. The inner side of the left front vertical plate assembly is sequentially welded from top to bottom with the front underhood cross beam assembly, the upper part of the front baffle body, the lower part of the front baffle body and the left front baffle support plate assembly, and the outer side of the left front vertical plate assembly is sequentially welded from top to bottom with the left front wheel cover assembly, the left door sill assembly and the left side wall assembly; the left front vertical plate assembly adopts an inner flange structure on the top face to be XZ-plane normally compression welded with the front underhood cross beam assembly, and adopts an outer flange structure on the side face to be positively Y-directionally buckled welded with the left side wall assembly; The inner side of the right front vertical plate assembly is sequentially welded from top to bottom with the front underhood cross beam assembly, the upper part of the front baffle body, the lower part of the front baffle body and the right front baffle support plate assembly, and the outer side of the right front vertical plate assembly is sequentially welded from top to bottom with the right front wheel cover assembly, the right door sill assembly and the right side wall assembly; the right front vertical plate assembly adopts an inner flange structure on the top face to be XZ-plane normally compression welded with the front underhood cross beam assembly, and adopts an outer flange structure on the side face to be positively Y-directionally buckled welded with the right side wall assembly.

5. The common body assembly for a pure electric and extended-range vehicle of claim 1, wherein: The front longitudinal beam upper cover plate adopts a bending V-angle design, the bending angle is the same as that of the lower part of the front baffle body, to be welded with the lower part of the front baffle body, the plane of the front longitudinal beam upper cover plate is welded with the front floor body, an integral structure is formed through the welding of the front longitudinal beam upper cover plate, the lower part of the front baffle body and the front floor body, and the Y-directional welding positions of the front longitudinal beam upper cover plate on both sides are respectively aligned with the right front longitudinal beam assembly and the left front longitudinal beam assembly.

6. The common body assembly for a pure electric and extended-range vehicle of claim 1, wherein: The right door sill inner plate rear assembly and the left door sill inner plate rear assembly are further included; The right door sill inner plate rear assembly outer flange is butt-welded with the right side wall assembly inner flange; The left door sill inner plate rear assembly outer flange is butt-welded with the left side wall assembly inner flange.

7. The common body assembly for a pure electric and extended-range vehicle of claim 1, wherein: The rear floor body assembly is further included; The front end of the rear floor body assembly is butt-welded with the rear end of the middle floor assembly, and the two side faces are respectively butt-welded on the inner flanges of the left rear longitudinal beam assembly and the right rear longitudinal beam assembly through welding and flow-drilling screw fastening, and the rear end face provides support and fixation for the rear floor storage box assembly.

8. The common body assembly for a pure electric and extended-range vehicle of claim 1, wherein: The rear floor left rear connecting plate, the rear wall inner plate assembly and the rear wall outer plate assembly are further included; The front end of the rear floor left rear connecting plate is butt-welded with the left rear longitudinal beam body through welding, and the side edge is butt-welded with the left rear longitudinal beam body through bolt fastening, and the rear end flange is welded with the rear wall inner plate assembly; The inner surface of the rear wall inner plate assembly is respectively butt-welded with the rear end flange of the rear floor left rear connecting plate, the rear floor rear connecting plate and the rear floor right rear connecting plate; The upper and lower sides of the rear wall outer plate assembly are provided with two flange structures, the first flange is used for strengthening the body strength, the second flange is respectively butt-welded with the rear wall inner plate assembly flange, and the middle groove surface is welded with the rear bumper assembly fixing support for fixing the rear bumper assembly; The left side of the welded body of the rear wall inner plate assembly and the rear wall outer plate assembly is clamped between the left rear longitudinal beam assembly and the rear anti-collision beam assembly through bolt fixation, and the right side is clamped between the right rear longitudinal beam assembly and the rear anti-collision beam assembly through bolt fixation.

9. A battery electric vehicle characterized by: The vehicle body assembly shared by a pure electric vehicle and a range extended vehicle is adopted.

10. A range extended vehicle, characterized by: The vehicle body assembly shared by a pure electric vehicle and a range extended vehicle is adopted.

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