Vehicle

Abstract

The present disclosure relates to a vehicle, comprising: a rear compartment frame; a passenger compartment frame; and a connecting integrated piece, which is arranged between the rear compartment frame and the passenger compartment frame in the front-rear direction of the vehicle and connected with the rear compartment frame and the passenger compartment frame respectively, wherein the connecting integrated piece is an integral piece. In this way, the integration of the connecting integrated piece can be improved, the assembly process can be simplified, and the lightweight of the vehicle can be facilitated. Moreover, the strength of the mounting point of the battery pack can be better improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, in particular, to a vehicle. BACKGROUND

[0002] In the front-rear direction of the vehicle, a front longitudinal beam, a rocker beam and a rear longitudinal beam are sequentially connected from front to rear, and the front longitudinal beam, the rocker beam and the rear longitudinal beam constitute a force transmission path in the front-rear direction of the vehicle. However, in the related art, the part where the front end of the rear longitudinal beam is connected to the rocker beam is connected together by splicing a plurality of sheet metal parts (usually ten to twenty sheet metal parts), which not only causes a redundant structure of the lap joints between the plurality of sheet metal parts, but also causes the strength of the connection area to be distributed in a faulted manner, thereby affecting the connection stiffness of the rear longitudinal beam and the rocker beam, and thus affecting the transmission of the collision force in the front-rear direction of the vehicle during rear impact of the vehicle. SUMMARY

[0003] The purpose of the present disclosure is to provide a vehicle to at least partially solve the problems in the related art.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a vehicle, comprising: a rear compartment frame; a passenger compartment frame; and a connection integrated part, which is arranged between the rear compartment frame and the passenger compartment frame in the front-rear direction of the vehicle, and is connected to the rear compartment frame and the passenger compartment frame respectively, wherein the connection integrated part is an integral part.

[0005] Through the above technical solution, the integration degree of the connection integrated part can be improved, the assembly process is simplified, and the lightweight of the vehicle is facilitated. Moreover, the strength of the mounting point of the battery pack can be better improved.

[0006] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0007] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0008] Figure 1 is a whole vehicle side view schematic diagram of a vehicle provided by an embodiment of the present disclosure;

[0009] Figure 2 is a whole vehicle side view schematic diagram of a vehicle provided by an embodiment of the present disclosure;

[0010] Figure 3 is a whole vehicle side view schematic diagram of a vehicle provided by an embodiment of the present disclosure;

[0011] Figure 4 isFigure 1 schematic view in a section along N-N;

[0012] Figure 5 is Figure 1 schematic view in a section along N-N;

[0013] Figure 6 is Figure 5 schematic view in a section along N-N;

[0014] Figure 7 is Figure 5 schematic view in a section along N-N;

[0015] Figure 8 is a schematic view of a rear side of a vehicle according to an embodiment of the present disclosure;

[0016] Figure 9 is a schematic view of a longitudinal section of a part of a vehicle according to an embodiment of the present disclosure;

[0017] Figure 10 is a schematic view of a bottom side of a vehicle according to an embodiment of the present disclosure, wherein the ring-like structure is shown with dashed lines, wherein the battery pack is not shown;

[0018] Figure 11 is a schematic view of a bottom side of a vehicle according to an embodiment of the present disclosure, wherein the ring-like structure is shown with dashed lines, wherein the battery pack is shown;

[0019] Figure 12 is a schematic view of a vehicle according to an embodiment of the present disclosure, wherein the ring-like structure is shown with dashed lines;

[0020] Figure 13 is a schematic view of a part of a vehicle according to an embodiment of the present disclosure, wherein the first ring-like structure is shown with dashed lines;

[0021] Figure 14 is Figure 12 schematic view of a vehicle according to an embodiment of the present disclosure, wherein the first ring-like structure is shown with dashed lines;

[0022] Figure 15 is a schematic view of a part of a vehicle according to an embodiment of the present disclosure (F-F view);

[0023] Figure 16 is a schematic view of a part of a vehicle according to an embodiment of the present disclosure (front side view);

[0024] Figure 17 is a schematic view of a part of a vehicle according to an embodiment of the present disclosure (rear side view), wherein the third ring-like structure is shown with dashed lines;

[0025] Figure 18 is a perspective structural schematic view of a vehicle rear structure of an embodiment of the present disclosure;

[0026] Figure 19 is a partial side view schematic view of a vehicle of an embodiment of the present disclosure;

[0027] Figure 20 is a partial side view schematic view of a vehicle of an embodiment of the present disclosure; Figure 19 is a schematic view of the G-G interface in FIG. 8;

[0028] Figure 21 is a perspective structural schematic view of a vehicle partial structure of an embodiment of the present disclosure (H-H view);

[0029] Figure 22 is a side view schematic view of a front subframe and battery pack connection of a vehicle of an embodiment of the present disclosure;

[0030] Figure 23 is a side view schematic view of a rear subframe and battery pack connection of a vehicle of an embodiment of the present disclosure;

[0031] Figure 24 is a perspective structural schematic view of a battery pack and front cabin battery pack mount connection of a vehicle of an embodiment of the present disclosure;

[0032] Figure 25 is a perspective structural schematic view of a battery pack and rear cabin battery pack mount connection of a vehicle of an embodiment of the present disclosure;

[0033] Figure 26 is a front view schematic view of a side impact force transmission structure of a vehicle of an embodiment of the present disclosure;

[0034] Figure 27 is a perspective structural schematic view of a battery pack of a vehicle of an embodiment of the present disclosure;

[0035] Figure 28 is a schematic view of a battery pack and seat cross beam assembly of a vehicle of an embodiment of the present disclosure;

[0036] Figure 29-31 is a partial schematic view of a battery pack mount location of a vehicle of an embodiment of the present disclosure;

[0037] Figure 32 is a partial exploded schematic view of a vehicle of an embodiment of the present disclosure;

[0038] Figure 33 is a partial schematic view of a battery pack mount location of a vehicle of an embodiment of the present disclosure;

[0039] Figure 34 is a partial schematic view of a battery pack mount location of a vehicle of an embodiment of the present disclosure; Figure 33a schematic view of a Z1 cross-section of the vehicle of the present disclosure;

[0040] Figure 35 is Figure 33 a schematic view of an X1 cross-section of the vehicle of the present disclosure;

[0041] Figure 36 is Figure 33 a schematic view of a Y1 cross-section of the vehicle of the present disclosure;

[0042] Figure 37-39 is a partial schematic view of a battery pack mount location of a vehicle of an embodiment of the present disclosure;

[0043] Figure 40-41 is an exploded partial schematic view of a vehicle of an embodiment of the present disclosure;

[0044] Figure 42-45 is a partial schematic view of a battery pack mount location of a vehicle of an embodiment of the present disclosure;

[0045] Figure 46 is an exploded partial schematic view of a vehicle of an embodiment of the present disclosure;

[0046] Figure 47-54 is a partial schematic view of a battery pack mount location of a vehicle of an embodiment of the present disclosure;

[0047] Figure 55 is a partial schematic view of a vehicle of an embodiment of the present disclosure;

[0048] Figure 56 is a side cross-sectional view of a rear floor cross member location of a vehicle of an embodiment of the present disclosure;

[0049] Figure 57-58 is a partial schematic view of a rocker location of a vehicle of an embodiment of the present disclosure;

[0050] Figure 59 is a schematic view of a vehicle center tunnel and seat cross member connection of an embodiment of the present disclosure;

[0051] Figure 60-64 is a partial schematic view of a battery pack location of a vehicle of an embodiment of the present disclosure;

[0052] Figure 65-76 is a partial schematic view of a battery pack mount location of a vehicle of an embodiment of the present disclosure;

[0053] Figure 77 is a schematic view of a rear floor cross member and C-pillar front reinforcement relative location of a vehicle of an embodiment of the present disclosure;

[0054] Figure 78 is Figure 77D-D schematic diagram of the vehicle according to an embodiment of the present disclosure;

[0055] Figure 79 E-E schematic diagram of the vehicle according to an embodiment of the present disclosure. Figure 77

[0056] Figure 80-83 Figure 1 is a partial schematic diagram of a vehicle according to an embodiment of the present disclosure.

[0057] Legend

[0058] Front cabin frame 1000

[0059] Front cabin lower cross beam, second cross beam, second cross beam 1210

[0060] Cross beam mounting surface 1212

[0061] Second connecting piece connecting part 1210a / 1210b / 1210c / 1210d

[0062] Front apron lower cross beam battery pack mounting point 1211

[0063] Front apron upper cross beam, first cross beam 1220

[0064] First connecting piece connecting part 1220a / 1220b / 1220c / 1220d

[0065] Front longitudinal beam 1100

[0066] Front apron 1200

[0067] Longitudinal beam middle reinforcing rib, second reinforcing rib 1101

[0068] First cross beam 1230

[0069] First cross beam middle reinforcing rib, third middle rib 1231

[0070] Front subframe assembly 1300

[0071] Front subframe rear cross beam 1310

[0072] Front subframe rear mounting point 1301

[0073] Front subframe rear fork arm support 1302

[0074] Front energy absorption box 1400

[0075] Front anti-collision beam 1500

[0076] Passenger compartment frame 2000

[0077] Sill beam, aluminum sill beam, sill 2100

[0078] ​Threshold body 2100a

[0079] Threshold reinforcement beam receiving space 2101

[0080] Threshold reinforcement beam 2130

[0081] Receiving part 2170

[0082] Battery pack mounting part 2180

[0083] Threshold inner panel (integrally formed with the side wall inner panel) 2110

[0084] Threshold outer panel (integrally formed with the side wall outer panel) 2120

[0085] Threshold inner reinforcement profile 2140

[0086] Inner threshold reinforcement longitudinal beam, threshold diagonal support beam 2150

[0087] Lateral front reinforcement block, front connecting block 2151

[0088] Lateral rear reinforcement block, rear connecting block 2152

[0089] Inner threshold sealing plate 2160

[0090] Side wall outer panel 2210

[0091] Side wall inner panel 2220

[0092] Side wall inner panel reinforcement block 2222

[0093] Side wall inner panel sealing plate 2221 Side wall assembly 2200 First embedded block 2201 Second embedded block 2202 Third embedded block 2203 Fourth embedded block 2204 Side wall inner panel body 22201 Side wall inner panel middle surface 2220a Side wall inner panel lower end surface 2220b Side wall inner panel lower vertical surface 2220c Side wall inner panel middle surface 2220d Side wall inner panel upper vertical surface 2220e Side wall inner panel upper end surface 2220f First ring structure (A ring) L001 Second ring structure L002 Third ring structure (C ring) L003 Fourth ring structure L004 Fifth ring structure (B ring) L005 Sixth ring structure L006 A-pillar 2300 Seventh ring structure (D ring) L007 C-pillar 2400 C-pillar reinforcement plate 2410 C-pillar inner pillar, side wall reinforcement 2420 C-pillar outer pillar, middle connecting piece 2430 C-pillar inner pillar lower support block 2421 C-pillar front reinforcement plate 2411 C-pillar rear reinforcement plate 2412 C-pillar front reinforcement plate connecting portion 2412a Rear floor, second connecting plate 2500 Rear floor cross beam 2510 Rear floor upper cross beam, rear floor cross beam upper section 2511 Rear floor middle cross beam 2513 Rear floor lower cross beam, rear floor cross beam lower section 2512

[0094] Floor middle cross beam reinforcement beam 2514

[0095] First connecting plate 2520

[0096] Access hole 2521

[0097] Floor cover plate 2515

[0098] Seat front cross beam 2630

[0099] Seat cross beam 2610

[0100] Seat rear cross beam 2620

[0101] Seat cross beam connecting plate, transverse fixing piece 2611

[0102] Seat cross beam middle fixing point 2612

[0103] Seat cross beam side end plate 2613

[0104] Seat cross beam end fixing point 2614

[0105] Seat cross beam rubberized surface 2615

[0106] Central passage 2700

[0107] Central passage cover plate 2710

[0108] Central passage top surface 2720

[0109] central channel lower reinforcement plate 2730

[0110] roof outer panel 2810

[0111] roof rear cross beam upper panel 2820

[0112] roof rear cross beam lower panel 2830

[0113] vehicle frame longitudinal beam 2840

[0114] rear compartment frame 3000

[0115] rear longitudinal beam 3100

[0116] rear quarter upper cross beam 3220

[0117] rear quarter lower cross beam 3210

[0118] rear subframe assembly 3300

[0119] rear energy absorption box 3400

[0120] rear anti-collision beam 3500

[0121] rear quarter panel 3200

[0122] rear subframe front mounting point lower surface 3302

[0123] rear subframe front cross beam 3310

[0124] rear subframe front mounting point 3301

[0125] front brace beam 3640

[0126] rear brace beam 3650

[0127] first reinforcement beam 3610

[0128] second reinforcement beam 3620

[0129] third reinforcement beam 3630

[0130] rear wheelhouse 3700

[0131] rear wheelhouse cross beam 3710

[0132] battery pack 4000

[0133] seal 4100

[0134] battery pack sealing foam 4200

[0135] battery pack front cross beam 4300

[0136] Battery pack rear cross beam 4400

[0137] Battery pack longitudinal beam, battery pack frame longitudinal beam 4500

[0138] Battery pack upper surface 4001

[0139] Battery pack front cross beam front end surface 4301

[0140] Battery pack rear cross beam rear end surface 4401

[0141] Battery pack front mounting point 4002

[0142] Battery pack rear mounting point 4003

[0143] Battery pack front row left / right mounting point 4004

[0144] Battery pack front row left middle / right middle mounting point 4005

[0145] Battery pack middle front row mounting point 4006

[0146] Battery pack middle rear row mounting point 4007

[0147] Front middle cross beam, battery pack middle front cross beam 4600

[0148] Rear middle cross beam, battery pack middle rear cross beam 4700

[0149] Longitudinal beam upper side end surface 4501

[0150] Battery pack mounting surface 4502

[0151] Longitudinal beam outer end surface 4503

[0152] Battery pack side mounting point 4504

[0153] Front compartment battery pack mounting 5000

[0154] Second cross beam connecting portion 5000a2 / 5000b2 / 5000c2 / 5000d2

[0155] Front longitudinal beam rear section lower end surface 5001

[0156] Front longitudinal beam rear section battery pack mounting point 5002

[0157] First cross beam connecting portion 5000a1 / 5000b1 / 5000c1 / 5000d1

[0158] Third mounting portion 2031 5031

[0159] Fourth mounting portion 2032 5032

[0160] Front subframe mounting point (sixth mounting portion) 5003

[0161] Second intermediate rib 5101

[0162] Protruding beam 5100

[0163] Stop face 5102

[0164] Connecting integrated piece, rear compartment battery pack mounting piece 6000

[0165] First mounting face 6001

[0166] Connecting portion 6100

[0167] Longitudinal beam connecting portion, rear longitudinal beam connecting portion 6110

[0168] First opening 6111

[0169] Fifth mounting portion 4121 6121

[0170] Seventh mounting portion 4123 6123

[0171] Intermediate rib, first intermediate rib j12

[0172] Stiffener, first stiffener j10

[0173] Rib j1-j13

[0174] Lug 6002

[0175] Bolt S1-S30

[0176] First step 1-1

[0177] Second step 1-2

[0178] Third step 1-3 DETAILED DESCRIPTION

[0179] A detailed description of specific embodiments of the present disclosure will be made below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0180] In this disclosure, unless otherwise stated, directional terms such as "up," "down," "left," "right," "front," and "rear" are defined based on the orientation shown in the accompanying drawings. They are used solely for the convenience of describing this disclosure and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientation structure and operation. Therefore, they should not be construed as limitations on this disclosure. For example, "up," "down," "left," "right," "front," and "rear" can be defined based on the vertical, horizontal, and longitudinal directions of a vehicle in normal driving condition. Specifically, in the accompanying drawings, the X direction is the longitudinal direction of the vehicle, where the side pointed by the arrow is "front," and vice versa; the Y direction is the horizontal direction of the vehicle, where the side pointed by the arrow is "right," and vice versa; the Z direction is the vertical direction of the vehicle, where the side pointed by the arrow is "up," and vice versa. The terms "inner" and "outer" refer to the inner and outer contours of the corresponding structures.

[0181] Furthermore, it should be noted that the terms used, such as "first" and "second," are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0182] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connect," "link," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0183] In addition, the term "crossbeam" in this disclosure can refer to a beam extending in the left-right direction of the vehicle, and "longitudinal beam" can refer to a beam extending in the front-rear direction of the vehicle. Specifically, "front longitudinal beam" refers to a longitudinal beam extending rearward from the front crossbeam of the vehicle, and "rear longitudinal beam" refers to a longitudinal beam extending forward from the rear crossbeam of the vehicle. The longitudinal beams are typically two beams arranged symmetrically about the front and rear centerlines of the vehicle; for example, a "front longitudinal beam" typically includes a "left front longitudinal beam" and a "right front longitudinal beam" spaced apart in the left-right direction.

[0184] In addition, unless otherwise specified, the terms “seat crossbeam,” “rear floor center crossbeam,” “rear floor crossbeam,” “front bulkhead,” “rear bulkhead,” “side bulkhead,” “A-pillar,” “C-pillar,” “sill beam,” and “rear wheel arch” used in the various embodiments of this disclosure have their common meanings in the art.

[0185] like Figures 1 to 83 As shown, this disclosure provides a vehicle that may include a body and a battery pack disposed at the bottom of the body.

[0186] As shown in Figure 1 and Figure 2 , the vehicle body can include a front compartment, a passenger compartment and a rear compartment from front to rear. The front compartment can include a front compartment frame 1000 and a front subframe mounted below the front compartment frame 1000; the rear compartment can include a rear compartment frame and a rear subframe mounted below the rear compartment frame 3000. The battery pack 4000 can be mounted below the passenger compartment and between the front subframe and the rear subframe in the length direction of the vehicle.

[0187] As shown in Figure 3 , the front compartment frame 1000 can include two front longitudinal beams 1100 arranged along the width direction of the vehicle, the passenger compartment can include two rocker beams 2100 arranged along the width direction of the vehicle, and the rear compartment frame 3000 can include two rear longitudinal beams 3100 arranged along the width direction of the vehicle.

[0188] The rear end of the front longitudinal beam 1100 can be connected to the front end of the corresponding rocker beam 2100, and the front end of the rear longitudinal beam 3100 can be connected to the rear end of the corresponding rocker beam 2100, i.e. the front longitudinal beam 1100 on the left side of the vehicle is connected to the rocker beam 2100 on the left side of the vehicle, and the front longitudinal beam 1100 on the right side of the vehicle is connected to the rocker beam 2100 on the right side of the vehicle; the rear longitudinal beam 3100 on the left side of the vehicle is connected to the rocker beam 2100 on the left side of the vehicle, and the rear longitudinal beam 3100 on the right side of the vehicle is connected to the rocker beam 2100 on the right side of the vehicle.

[0189] As shown in Figure 3 , the rear end of the front longitudinal beam 1100 can be connected to the front end of the corresponding rocker beam 2100 through the front compartment battery pack mount 5000 described below, and the front end of the rear longitudinal beam 3100 can be connected to the rear end of the corresponding rocker beam 2100 through the rear compartment battery pack mount 6000 described below. For details, see the following.

[0190] As shown in Figure 3 , the front compartment frame 1000 can further include a front anti-collision beam 1500 arranged along the width direction of the vehicle, and the left and right ends of the front anti-collision beam 1500 are connected to the front ends of the corresponding front longitudinal beams 1100 in a pair of front longitudinal beams 1100 through front anti-collision boxes. The rear compartment frame 3000 can further include a rear anti-collision beam 3500 arranged along the width direction of the vehicle, and the left and right ends of the rear anti-collision beam 3500 are connected to the front ends of the corresponding rear longitudinal beams 3100 in a pair of front longitudinal beams 1100 through rear anti-collision boxes.

[0191] As shown in Figure 11As shown, the battery pack 4000 can include a battery tray, which includes a tray bottom plate and a battery pack front cross beam 4300, a battery pack rear cross beam 4400 and two battery pack longitudinal beams 4500 (a battery pack left longitudinal beam and a battery pack right longitudinal beam) all arranged on the tray bottom plate. The battery pack front cross beam 4300, the battery pack rear cross beam 4400 and the two battery pack longitudinal beams 4500 are connected to form a ring structure (i.e., a seventh ring structure L007).

[0192] As mentioned above, in the related art, the structure in which the front longitudinal beam 1100 or the rear longitudinal beam 3100 is connected to the front end of the rocker beam 2100 is connected together by splicing of multiple sheet metal pieces, which is troublesome to assemble and has low connection rigidity, and is not conducive to the transmission of the collision force.

[0193] In view of this, as Figures 1 to 28 shown, the vehicle provided by the present disclosure further includes a plurality of battery pack mounting pieces, the battery pack mounting pieces are connected to at least one end of the rocker beam 2100 in the front-rear direction, two battery pack mounting pieces (front compartment battery pack mounting piece 5000 and rear compartment battery pack mounting piece 6000 below) are arranged at intervals in the vehicle width direction, and two rocker beams 2100 are arranged at intervals in the vehicle width direction. In the vehicle width direction, the minimum distance between the two battery pack mounting pieces is less than the minimum distance between the two rocker beams 2100, and the battery pack mounting piece is formed with a battery pack mounting portion adapted to be connected to the battery pack 4000, wherein the battery pack mounting piece is a unitary piece.

[0194] In the present disclosure, since the battery pack mounting piece is a unitary piece, the self-rigidity is good, and compared with the scheme in the prior art in which the connecting piece between the front longitudinal beam 1100 or the rear longitudinal beam 3100 and the rocker beam 2100 is spliced by multiple sheet metal pieces, the scheme of the present disclosure can improve the integration of the battery pack mounting piece, simplify the assembly process, and facilitate the lightweight of the vehicle. Moreover, since the self-rigidity of the battery pack mounting piece is good, the strength of the mounting point of the battery pack 4000 can be better improved, and by connecting the battery pack mounting piece and the battery pack 4000 into a unitary piece, the overall body rigidity can also be improved.

[0195] In addition, since the battery pack mounting piece is a unitary piece and is connected to the battery pack 4000, the effect of body-battery integration of the vehicle is improved, and when the vehicle is subjected to a collision, under the action of the battery pack mounting piece, the battery pack 4000 and the rocker beam 2100, a path with good front-rear force transmission effect is formed, which is conducive to the transmission and dispersion of the front-rear direction collision force. Such design makes the force transmission and rigidity of the vehicle better, and the crash performance of the vehicle can be improved.

[0196] Since the minimum distance between the two battery pack mounting components is less than the minimum distance between the two thresholds, the battery pack mounting components are located inside the threshold beam 2100. In this way, the thresholds can be used to absorb energy through crushing first, and then the battery pack mounting components can be used to assist in resisting the impact.

[0197] It is understood that the term "battery pack mounting component as a single piece" refers to a battery pack mounting component being a separate part. It can be a part obtained by integral molding, or it can be a part that is processed separately and then connected into one piece. This disclosure does not limit this.

[0198] Optionally, in one embodiment of this disclosure, the battery pack mounting component can be an integrally molded structure to simplify the processing and assembly process. At the same time, it can give the battery pack mounting component itself better rigidity to further improve the integration effect of the battery pack mounting component with the vehicle body and the battery pack 4000.

[0199] For example, in this disclosure, the battery pack mounting component can be a casting, specifically, a casting manufactured using an aluminum alloy die-casting process. It is understood that, in addition to aluminum alloy, the battery pack mounting component can be made of other materials, such as steel.

[0200] In this disclosure, the number and relative positions of the battery pack mounting components are not limited, such as Figures 1 to 3 As shown, there can be two, three, four, or more. When arranging them, the two battery pack mounting components can be connected to the front end of the corresponding sill beam 2100, or the two battery pack mounting components can be connected to the rear end of the corresponding sill beam 2100, or one of the two battery pack mounting components can be arranged and connected to the front end of the sill beam 2100, and the other of the two battery pack mounting components can be arranged and connected to the rear end of the corresponding sill beam 2100 (or the sill beam 2100 on the other side of the vehicle).

[0201] like Figure 3 As shown, in one embodiment of this disclosure, the plurality of battery pack mounting components may include at least two battery pack mounting components (i.e., two front compartment battery pack mounting components 5000) respectively connected to the front ends of the corresponding sill beam 2100, and two battery pack mounting components (i.e., two rear compartment battery pack mounting components 6000) respectively connected to the rear ends of the corresponding sill beam 2100. In this disclosure, the front compartment battery pack mounting component 5000 and the rear compartment battery pack mounting component 6000 located on the left side of the vehicle may be respectively connected to the two ends of the sill beam 2100 located on the left side of the vehicle body, and the front compartment battery pack mounting component 5000 and the rear compartment battery pack mounting component 6000 located on the right side of the vehicle body may be respectively connected to the two ends of the sill beam 2100 located on the right side of the vehicle body.

[0202] In this way, the installation strength and rigidity of the battery pack 4000 can be improved, and the reliability of the installation of the battery pack 4000 can be effectively improved.

[0203] Moreover, the front-cabin battery pack mount 5000 and the rear-cabin battery pack mount 6000 correspond to each other in the front-rear direction of the vehicle, and are connected to the front and rear end portions of the rocker beam 2100, respectively. The force transmission frame can be formed from the front-cabin battery pack mount 5000, the rocker beam 2100, and the rear-cabin battery pack mount 6000, and the collision force can be better transmitted and dispersed.

[0204] After the battery pack 4000 is installed, a relatively large force receiving surface can be formed. The front-cabin battery pack mount 5000 and the rear-cabin battery pack mount 6000 can form a frame with the rocker beam 2100, increase the body stiffness, improve the torsional stiffness, resist the deformation of the vehicle, and improve the ride comfort.

[0205] Optionally, the two front-cabin battery pack mounts 5000 can be respectively located at the left and right corners of the front side of the battery pack 4000, and the two rear-cabin battery pack mounts 6000 can be respectively located at the left and right corners of the rear side of the battery pack 4000, so as to further improve the reliability of the installation of the battery pack 4000.

[0206] As shown in Figure 3 In the vehicle length direction, the maximum distance between the battery pack mount (i.e., the front-cabin battery pack mount 5000) connected to the front end portion of the rocker beam 2100 and the battery pack mount (i.e., the rear-cabin battery pack mount 6000) connected to the rear end portion of the rocker beam 2100 is greater than the length of the rocker beam 2100.

[0207] In this way, the battery pack mount is a separate component relative to the rocker beam 2100, and when transmitting the force, the collision force can be first transmitted by the battery pack mount (the collision force is first transmitted by the front-cabin battery pack mount 5000 in a front collision, and the collision force is first transmitted by the rear-cabin battery pack mount 6000 in a rear collision) having a greater rigidity, and then transmitted by the rocker beam 2100, so as to improve the crashworthiness of the vehicle.

[0208] Optionally, in the present disclosure, the projection of the battery pack mounting member in the vehicle front-rear direction (i.e. the vehicle length direction) at least partially overlaps with the projection of the corresponding rocker beam 2100 in the vehicle front-rear direction, i.e. the projection of the battery pack mounting member located on the left side of the vehicle in the vehicle front-rear direction can at least partially overlap with the projection of the rocker beam 2100 located on the left side of the vehicle in the vehicle front-rear direction, and the projection of the battery pack mounting member located on the right side of the vehicle in the vehicle front-rear direction can at least partially overlap with the projection of the rocker beam 2100 located on the right side of the vehicle in the vehicle front-rear direction. In this way, the battery pack mounting member is connected to the rocker beam 2100, thereby forming a reliable force transmission path and achieving better and more effective force transmission.

[0209] Optionally, in the present disclosure, the projection of the battery pack mounting member in the vehicle left-right direction (i.e. the vehicle width direction) at least partially overlaps with the projection of the corresponding rocker beam 2100 in the vehicle left-right direction, i.e. the projection of the battery pack mounting member located on the left side of the vehicle in the vehicle left-right direction can at least partially overlap with the projection of the rocker beam 2100 located on the left side of the vehicle in the vehicle left-right direction, and the projection of the battery pack mounting member located on the right side of the vehicle in the vehicle left-right direction can at least partially overlap with the projection of the rocker beam 2100 located on the right side of the vehicle in the vehicle left-right direction. In this way, the battery pack mounting member and the corresponding rocker beam 2100 are configured to form a force transmission path extending in the vehicle front-rear direction, so that the force transmission in the vehicle left-right direction is better. In addition, the rocker beam 2100 can be limited in the front-rear and left-right directions, the connection is more stable, and the stiffness can be better improved.

[0210] Optionally, in the present disclosure, the projections of the battery pack mounting members located on the same side in the vehicle width direction at least partially overlap in the vehicle front-rear direction. For example, the projections of the front compartment battery pack mounting member 5000 and the rear compartment battery pack mounting member 6000 located on the left side in the vehicle width direction at least partially overlap in the vehicle front-rear direction, and the projections of the front compartment battery pack mounting member 5000 and the rear compartment battery pack mounting member 6000 located on the right side in the vehicle width direction at least partially overlap in the vehicle front-rear direction. In this way, the front compartment battery pack mounting member 5000 and the rear compartment battery pack mounting member 6000 are favorably arranged to face each other in the front-rear direction for force transmission, so that the force transmission is smoother and the deflection torque is prevented, facilitating the front-rear transmission and dispersion of the impact force, and the crash performance of the vehicle can also be improved.

[0211] In the present disclosure, referring to the drawings, in an embodiment of the present disclosure, the battery pack 4000 mounting surfaces of the four battery pack mounting members are located on the same horizontal plane, i.e. the battery pack 4000 mounting surfaces of the two front compartment battery pack mounting members 5000 and the two rear compartment battery pack mounting members 6000 are located on the same height in the height direction of the vehicle.

[0212] Thus, the four battery pack mounting members can be more closely connected with the battery pack 4000; secondly, the battery pack 4000 and the vehicle body can be better sealed; in addition, the collision force can be more smoothly transmitted among the front compartment battery pack mounting member 5000, the battery pack 4000 and the rear compartment battery pack mounting member 6000 without a deflection torque, which will not form an additional burden on the battery pack 4000 and will not damage the battery pack 4000 due to the deflection torque; and the gap between the battery pack 4000 and each component can be reduced, which is better integrated with the vehicle body, i.e., the battery pack 4000 is better integrated with the vehicle body.

[0213] It can be understood that in other embodiments of the present disclosure, any two, three or four of the battery pack 4000 mounting surfaces of the four battery pack mounting members can not be located on the same horizontal plane.

[0214] In the present disclosure, as shown in the drawings, the rocker beam 2100 is formed with a mounting point suitable for connecting with the battery pack 4000. That is, in the present disclosure, in addition to providing the battery pack 4000 mounting point on the above-mentioned battery pack mounting member, the mounting point (i.e., the battery pack 4000) for mounting the battery pack 4000 can also be provided on the rocker beam 2100, which can further improve the reliability of the battery pack 4000 installation, while improving the integration effect of the battery pack 4000, the battery pack mounting member and the rocker beam 2100, and can improve the stiffness of the rocker beam 2100, further improving the stiffness and force transmission effect of the vehicle body.

[0215] In addition, the stiffness of the rocker beam 2100 can form a large force transmission plane with the above-mentioned four battery pack mounting members, and the battery pack 4000, the battery pack mounting member and the rocker beam 2100 are formed as an integrated structure, which can better transmit force and effectively inhibit the deflection torque in the vertical direction when the force is transmitted in the front-rear direction.

[0216] Alternatively, the battery pack 4000 mounting surface on the battery pack 4000 mounting portion can be located on the same horizontal plane. Thus, the rocker beam 2100 can be more closely connected with the battery pack 4000; secondly, the battery pack 4000 and the vehicle body can be better sealed; in addition, the collision force can be more smoothly transmitted among the front compartment battery pack mounting member 5000, the battery pack 4000 and the rear compartment battery pack mounting member 6000 without a deflection torque, which will not form an additional burden on the battery pack 4000 and will not damage the battery pack 4000 due to the deflection torque; and the gap between the battery pack 4000 and each component can be reduced, which is better integrated with the vehicle body, i.e., the battery pack 4000 is better integrated with the vehicle body.

[0217] In the present disclosure, as shown in the drawings, the rocker beam 2100 is formed with a mounting point suitable for connecting with the battery pack 4000. That is, in the present disclosure, in addition to providing the battery pack 4000 mounting point on the above-mentioned battery pack mounting member, the mounting point (i.e., the battery pack 4000) for mounting the battery pack 4000 can also be provided on the rocker beam 2100, which can further improve the reliability of the battery pack 4000 installation, while improving the integration effect of the battery pack 4000, the battery pack mounting member and the rocker beam 2100, and can improve the stiffness of the rocker beam 2100, further improving the stiffness and force transmission effect of the vehicle body. Figure 3As shown, the vehicle can also include a front lower cross beam 1210, both ends of which are connected with the two front compartment battery pack mounting members 5000 respectively. The front lower cross beam 1210 is a cross beam connected with the lower end of the front apron 1200 on the vehicle, and by connecting the two front compartment battery pack mounting members 5000 with the front lower cross beam 1210, on the one hand, a force transmission path extending along the left-right direction of the vehicle body can be formed by the two front compartment battery pack mounting members 5000 and the front lower cross beam 1210, the force transmission area is increased, and the effect of transmitting the collision force can be achieved when the vehicle is subjected to a side impact; on the other hand, the reliability of the battery pack 4000 installation and the stiffness of the entire vehicle body can be improved, which is also conducive to the transmission and dispersion of the collision force in the front-rear direction. By increasing the stiffness of the front side of the force transmission plane, the forward impact can be effectively resisted, and the crashworthiness of the vehicle can be improved.

[0218] As shown, Figure 3 The front lower cross beam 1210 is provided with a lower cross beam battery pack mounting surface adapted to be connected with the battery pack 4000. That is, in the present disclosure, in addition to providing battery pack 4000 mounting points on the battery pack mounting member and / or the rocker beam 2100 described above, mounting points can also be provided on the lower cross beam to install the battery pack 4000, which can further improve the reliability of the battery pack 4000 installation, and at the same time improve the integration effect of the battery pack 4000, the battery pack mounting member, the rocker beam 2100, and the front lower cross beam 1210, and further improve the stiffness and force transmission effect of the vehicle body.

[0219] In addition, such design can make the connection between the lower cross beam and the battery pack 4000 more close, and the stress on the front side of the vehicle can be transmitted to the battery pack 4000 through the cross beam, increasing the force transmission path.

[0220] Alternatively, the lower cross beam battery pack mounting surface can be located on the same horizontal plane as the mounting surface on the battery pack 4000 mounting portion. Referring to Figures 3 to 28 , the lower cross beam battery pack 4 mounting surface and the battery pack mounting surface can be located on the same horizontal plane.

[0221] Such design can make the connection between the lower cross beam and the battery pack 4000 more close; secondly, it is convenient for better sealing the battery pack 4000 and the vehicle body; in addition, the transmission of the collision force between the front compartment battery pack mounting member 5000, the battery pack 4000 and the rear compartment battery pack mounting member 6000 is more smooth, there is no deflection torque, which will not form an additional burden on the battery pack 4000, nor will it damage the battery pack 4000 due to the deflection torque; and the gap between the battery pack 4000 and each component can be reduced, and the integration of the battery pack 4000 and the vehicle body is better, that is, the integration of the battery pack 4000 and the vehicle body is better.

[0222] In the present disclosure, as shown in the figure, the vehicle includes two A-pillars 2300 arranged at intervals in the vehicle width direction, and the front compartment battery pack mount 5000 is connected with the corresponding A-pillar 2300. That is, the front compartment battery pack mount 5000 located on the left side of the vehicle can be connected with the A-pillar 2300 located on the left side of the vehicle, and the front compartment battery pack mount 5000 located on the right side of the vehicle can be connected with the A-pillar 2300 located on the right side of the vehicle. By being connected with the A-pillar 2300, the force transmission path of the vehicle can be increased, and at the same time, the battery pack 4000, the A-pillar 2300, the rocker beam 2100, and the front compartment battery pack mount 5000 can be better integrated together, improving the reliability of the battery pack 4000 installation and the overall stiffness of the vehicle.

[0223] In the case where the front compartment battery pack mount 5000 is directly connected with the rocker beam 2100, the front longitudinal beam 1100, the A-pillar 2300, and the battery pack 4000 respectively, and the front compartment battery pack mount 5000 itself is an integral part, the force transmission of the above-mentioned parts can be better connected, the strength of the connection point is strong, and the overall integrity of the battery pack 4000, the A-pillar 2300, the rocker beam 2100, and the front compartment battery pack mount 5000 is better, and the stiffness is better.

[0224] In addition, because the battery pack 4000 is a component with a relatively large size, which is distributed under the vehicle body, and the A-pillar 2300 and the rocker beam 2100 are located on both sides of the front of the vehicle, and the connection form is adopted, the overall battery pack 4000 can be used to strengthen the stiffness of this part of the structure, so that the front side of the vehicle can be connected as a whole, the front side stiffness of the vehicle can be improved, the deformation of the vehicle during driving can be inhibited, the driving experience can be improved, and the safety of the vehicle can be improved.

[0225] Moreover, when subjected to a collision, since the battery pack 4000, the A-pillar 2300, the rocker beam 2100, and the front compartment battery pack mount 5000 are connected together to form a vertical ring, the torsional stiffness of the vehicle body can be enhanced, and at the same time, the vertical ring can also inhibit the vertical torsional moment of the front longitudinal beam 1100 due to the front collision and the battery pack 4000 (because the front longitudinal beam 1100 is spaced apart from the battery pack 4000 in the vertical direction, a vertical deflection moment is generated), so that the vertical overturning moment of the front longitudinal beam 1100 during the collision process can be effectively inhibited, the passenger compartment can be prevented from being damaged, and the components after overturning can also prevent the battery pack 4000 from being damaged.

[0226] As shown in the figure, the projection of the front compartment battery pack mount 5000 in the vehicle width direction at least partially overlaps the projection of the A-pillar 2300 in the vehicle width direction, thereby increasing the reliability of the connection and collision force transmission between the front compartment battery pack mount 5000 and the A-pillar 2300.

[0227] The front compartment battery pack mounting member 5000 can be directly connected with the corresponding A-pillar 2300 or indirectly connected, and the present disclosure does not limit this.

[0228] In the present disclosure, the front wall lower cross beam 1210 can be integrally formed, so that the battery pack mounting member and the front wall lower cross beam 1210 are integrally formed members, which can reduce the connection joint and prevent the connection from being damaged under stress, and these integrally formed members and the battery pack 4000 can better enhance the stiffness after being connected.

[0229] In the present disclosure, as shown in the drawings, the vehicle further comprises a front wall upper cross beam 1220, both ends of the front wall upper cross beam 1220 are connected with two A-pillars 2300, that is, the left end of the front wall upper cross beam 1220 is connected with the A-pillar 2300 located on the left side of the vehicle, and the right end of the front wall upper cross beam 1220 is connected with the A-pillar 2300 located on the right side of the vehicle, and the two A-pillars 2300 are connected as a whole by arranging the front wall upper cross beam 1220, which can improve the stiffness of the front side of the vehicle body, especially the stiffness of the upper part of the front side of the vehicle body. In addition, it is also conducive to inhibiting the torsional moment of the front longitudinal beam 1100 and the battery pack 4000 in the vertical direction due to the front collision.

[0230] As shown in the drawings, in the present disclosure, the front wall upper cross beam 1220 is arranged in a spaced manner with the front wall lower cross beam 1210 in the vehicle height direction, the two front compartment battery pack mounting members 5000, the front wall lower cross beam 1210, the front wall upper cross beam 1220 and the two A-pillars 2300 are connected to form a first ring structure L001, and thus, by forming the first ring structure L001, the stiffness of the front side of the vehicle can be effectively improved, especially the deformation of the front side of the vehicle body in the height direction can be inhibited, and the torsional moment of the front longitudinal beam 1100 and the battery pack 4000 in the vertical direction due to the front collision can also be inhibited by the vertical ring structure.

[0231] As shown in the drawings, the vehicle further comprises a front wall panel 1200, both ends of the front wall panel 1200 can be connected with two A-pillars 2300, that is, the left and right ends of the front wall panel 1200 can be connected with the corresponding A-pillars 2300 respectively, and the upper and lower ends of the front wall panel 1200 can be connected with the front wall panel 1200 upper cross beam and the front wall panel 1200 lower cross beam respectively, in other words, the front wall panel 1200 can be arranged in the space defined by the above-mentioned first ring structure L001 (i.e. in the hollow area of the first ring structure). By cooperating the front wall panel 1200 with the first ring structure, a surface is formed, which can greatly improve the stiffness of the vehicle body.

[0232] In the present disclosure, the front wall panel 1200 can be an integrally formed structure to simplify processing and improve stiffness.

[0233] In the present disclosure, the front wall 1200 and the front wall upper cross beam 1220 can be an integrally formed structure, thereby facilitating processing and simplifying assembly, and the integrally formed structure can better improve the rigidity.

[0234] Optionally, the front wall 1200 and the upper cross beam connecting part can be formed with a cavity, and the left and right ends of the cavity can be respectively communicated with the space between the side wall inner panel 2220 and the side wall outer panel 2210 of the vehicle.

[0235] In the present disclosure, as shown in the figure, the vehicle can further include a central channel 2700 extending in the front-rear direction of the vehicle, and the central channel 2700 is connected with the front wall lower cross beam 1210. By connecting the central channel 2700 with the front wall lower cross beam 1210, the path of force transmission in the front-rear direction of the vehicle can be increased, and the rigidity of the vehicle body can also be improved. In addition, by providing the central channel 2700, the deflection of the front wall lower cross beam 1210 in the vertical direction can be inhibited, because the central channel 2700 is long in the front-rear direction, which can achieve this effect.

[0236] In the present disclosure, as shown in the figure, the vehicle further includes a rear wall lower cross beam 3210, and the two ends of the rear wall lower cross beam 3210 are respectively connected with the corresponding rear compartment battery pack mounting member 6000. In this way, the front wall lower cross beam 1210, the two front compartment battery pack mounting members 5000, the two rocker beams 2100, the two rear compartment battery pack mounting members 6000, and the rear wall lower cross beam 3210 are connected to form a ring-shaped structure, i.e., a bottom ring-shaped structure (which can be referred to as a sixth ring-shaped structure).

[0237] The rear wall lower cross beam 3210 is a cross beam connected with the lower end of the rear wall 3200 on the vehicle, and by connecting the two rear compartment battery pack mounting members 6000 with the rear wall lower cross beam 3210, on the one hand, the force transmission path can be increased, and the force transmission path extending in the left-right direction of the vehicle body can be formed by the two rear compartment battery pack mounting members 6000 and the rear wall lower cross beam 3210, which can play a role in transmitting collision force when the vehicle is subjected to a side impact. On the other hand, the reliability of the installation of the battery pack 4000 and the rigidity of the entire vehicle body can be improved.

[0238] Moreover, by forming the above-mentioned bottom ring-shaped structure, after installing the battery pack 4000, the rigidity of the vehicle can be effectively improved, especially the rigidity of the rear side of the vehicle body can be improved, and the deformation of the rear side of the vehicle body in the height direction can be inhibited.

[0239] Optionally, the rear wall lower cross beam 3210 can be integrally formed, which has good rigidity and is conducive to improving the rigidity of the entire vehicle body. When the parts on this ring are basically integrally formed, the effect of improving the rigidity of the vehicle will be more obvious.

[0240] In the present disclosure, the rear under cross beam 3210 can be arranged spaced apart from the battery pack 4000 in the vehicle height direction. In this way, the two rear compartment battery pack mounts 6000, the battery pack 4000, the rear upper cross beam 3220 and the rear under cross beam 3210 can form a ring structure in the vertical direction, which can improve the stiffness of the vehicle and inhibit the deformation of the vehicle.

[0241] In the present disclosure, the rear under cross beam 3210 can be arranged spaced apart from the battery pack 4000 in the vehicle height direction. In this way, the two rear compartment battery pack mounts 6000, the battery pack 4000, the rear upper cross beam 3220 and the rear under cross beam 3210 can form a ring structure in the vertical direction, which can improve the stiffness of the vehicle and inhibit the deformation of the vehicle.

[0242] As shown in the figure, in the present disclosure, the vehicle can further include a rear floor cross beam 2510 (also referred to as a rear floor 2500), and the rear floor cross beam 2510 is formed with a rear floor 2500 battery pack 4000 mounting surface which is at the same level as the rocker beam 2100. By arranging the rear floor cross beam 2510 connected to the battery pack 4000, the mounting point of the battery pack 4000 can be increased, the reliability of the battery pack 4000 mounting can be improved, and the stiffness of the vehicle as a whole can also be improved.

[0243] In this way, the connection between the rear floor cross beam 2510 and the battery pack 4000 can be more closely connected; secondly, the battery pack 4000 and the vehicle body can be better sealed; in addition, the transmission of the impact force between the front compartment battery pack mount 5000, the battery pack 4000 and the rear compartment battery pack mount 6000 is more smooth, there is no deflection torque, which will not form an additional burden on the battery pack 4000, nor will it damage the battery pack 4000 due to the deflection torque; and the gap between the battery pack 4000 and each component can be reduced, and the integration of the battery pack 4000 and the vehicle body is better, i.e., the integration of the battery pack 4000 and the vehicle body is better.

[0244] In the present disclosure, as shown in the figure, the two ends of the rear floor cross beam 2510 are respectively connected to the corresponding rocker beams 2100, and the rear floor cross beam 2510, the two rocker beams 2100 and the rear under cross beam 3210 form a second ring structure. That is, the left end of the rear floor cross beam 2510 can be connected to the rocker beam 2100 located on the left side of the vehicle, and the right end of the rear floor cross beam 2510 can be connected to the rocker beam 2100 located on the right side of the vehicle. By forming the second ring structure, the stiffness of the bottom of the vehicle can be effectively improved, especially the deformation of the bottom of the vehicle body can be inhibited, which can play a protective role for the battery pack 4000, and the reliability and safety of the battery pack 4000 mounting can be improved.

[0245] As shown in the figure, in the present disclosure, the vehicle can further include a rear floor middle beam 2513, both ends of the rear floor middle beam 2513 are connected with corresponding rocker beams 2100 respectively, by connecting the rocker beams 2100 through the middle beam, the force transmission path in the transverse direction can be increased, and the stiffness of the vehicle, especially the stiffness of the bottom of the vehicle, can be improved.

[0246] In the present disclosure, as shown in the figure, the rear floor middle beam 2513 can be connected with the battery pack 4000, in this way, the mounting points of the battery pack 4000 are increased, and the connection of the battery pack 4000 with the rear floor middle beam 2513 can further improve the stiffness of the vehicle.

[0247] Optionally, in the front-rear direction of the vehicle, the rear floor middle beam 2513 is arranged between the front lower beam 1210 and the rear lower beam 3210 of the vehicle. The ring structure between the front lower beam 1210 and the rear lower beam 3210 can be further strengthened by the rear floor middle beam 2513.

[0248] In the present disclosure, in the front-rear direction of the vehicle, the rear floor middle beam 2513 is connected with the rear floor beam 2510. The two beams strengthen each other, and when the rear floor beam 2510 and the battery pack 4000 are sealed, the battery pack 4000 is connected with the middle beam, and the two beams are closer to each other, so that the connection is more compact.

[0249] As shown in the figure, in the present disclosure, the vehicle further includes two C-pillars 2400 arranged at intervals in the width direction of the vehicle, and the two C-pillars 2400 are respectively connected with corresponding rear compartment battery pack mounting members 6000. That is, the rear compartment battery pack mounting member 6000 located on the left side of the vehicle can be connected with the C-pillar 2400 located on the left side of the vehicle, and the rear compartment battery pack mounting member 6000 located on the right side of the vehicle can be connected with the C-pillar 2400 located on the right side of the vehicle. By being connected with the C-pillar 2400, the force transmission path of the vehicle can be increased, and the C-pillar 2400, the rocker beam 2100 and the rear compartment battery pack mounting member 6000 can be better integrated, the reliability of the battery pack 4000 installation and the overall stiffness of the vehicle can be improved, and the stiffness of the rear side of the vehicle can be improved in particular.

[0250] In the case where the rear compartment battery pack mounting member 6000 is directly connected with the rocker beam 2100, the rear longitudinal beam 3100, the C-pillar 2400 and the battery pack 4000 respectively, and the rear compartment battery pack mounting member 6000 is an integral part, the force transmission of the above-mentioned parts can be better connected, the strength of the connection point is strong, and the integrity and stiffness of the battery pack 4000, the C-pillar 2400, the rocker beam 2100 and the rear compartment battery pack mounting member 6000 are better.

[0251] As shown in the figure, the projection of the C pillar 2400 in the vehicle front-rear direction at least partially overlaps with the projection of the corresponding rear compartment battery pack mounting member 6000 in the vehicle front-rear direction, thereby facilitating the transmission and dispersion of the front-rear direction collision force, and the transmission is also more smooth.

[0252] In the present disclosure, the rear compartment battery pack mounting member 6000 and the corresponding C pillar 2400 can be directly connected or indirectly connected, and the present disclosure does not limit this.

[0253] As shown in the figure, the vehicle further comprises a rear upper cross beam 3220, the two ends of the rear upper cross beam 3220 are connected with the corresponding C pillars 2400 respectively, and the rear upper cross beam 3220, the two C pillars 2400, the rear lower cross beam 3210 and the two rear compartment battery pack mounting members 6000 are connected to form a third ring structure L003. That is, the left end of the rear upper cross beam 3220 is connected with the C pillar 2400 located on the left side of the vehicle, and the right end of the rear upper cross beam 3220 is connected with the C pillar 2400 located on the right side of the vehicle. By arranging the rear upper cross beam 3220 to connect the two C pillars 2400 into one, the stiffness of the rear side of the vehicle can be improved, especially the stiffness of the upper part of the rear side of the vehicle.

[0254] Moreover, by forming the third ring structure L003, the stiffness of the rear side of the vehicle can be effectively improved, and the deformation of the rear side of the vehicle body in the height direction can be inhibited.

[0255] In the present disclosure, referring to the figure, in the vertical direction, the vehicle body has two ring structures arranged in the vehicle front-rear direction, i.e., a first ring structure and a third ring structure. The upper side of the first ring structure and the third ring structure can be connected by the roof of the vehicle body, and the lower side can be connected by the battery pack 4000 and the rocker beam 2100 (the bottom of the vehicle body also has a bottom ring structure), forming a frame with very high strength, which can greatly improve the stiffness of the vehicle.

[0256] Moreover, the roof is provided with a roof longitudinal beam, and the roof can be integrally formed, and the overall structural strength is very high. Therefore, the strength of the components on the upper side of the vehicle body is high, and the strength of the battery pack 4000 is also high. In the case that the rear lower cross beam 3210, the front lower cross beam 1210, the front wall 1200 and the battery pack mounting member are integrally formed, the overall strength of the vehicle is very high, and the strength after forming the frame is also high, and the stiffness can meet the requirements.

[0257] In addition, in the present disclosure, the two ends of the rear wall 3200 are connected with the side wall and the C pillar 2400. In this way, the ring between the rear lower cross beam 3210, the C pillar 2400 and the rear upper cross beam 3220 is filled by the rear wall 3200, forming a surface structure with good stiffness.

[0258] In the present disclosure, a cavity can be provided between the rear lower cross beam 3210 and the battery pack 4000, which can be used to ventilate and dissipate heat for the on-board charger.

[0259] In the present disclosure, in order to ensure the installation strength and reliability of the battery pack 4000, as an optional embodiment, the battery pack 4000 can be directly connected with the plurality of battery pack mounting members (i.e., the front compartment battery pack mounting member 5000 and the rear compartment battery pack mounting member 6000), which is beneficial to improve the connection strength of the connection points and improve the effect after the combination of the battery pack 4000 and the battery pack 4000. In addition, it can also save parts and simplify the structure.

[0260] As shown in the figure, in the embodiment in which the front end of the battery pack 4000 is connected with the two front compartment battery pack mounting members 5000 arranged in the vehicle width direction, and the rear end of the battery pack 4000 is connected with the two rear compartment battery pack mounting members 6000 arranged in the vehicle width direction, the front end of the battery pack 4000 can be directly connected with the two front compartment battery pack mounting members 5000, and the rear end of the battery pack 4000 can be directly connected with the two rear compartment battery pack mounting members 6000.

[0261] Similarly, the battery pack 4000 can be directly connected with the front lower cross beam 1210, the rocker beam 2100, and the rear floor middle cross beam 2513 of the vehicle, so as to improve the connection strength of the connection points of the battery pack 4000 and the above three parts and improve the effect after the combination of the battery pack 4000 and the above parts.

[0262] As shown in the figure, in the present disclosure, the rear floor middle cross beam 2513 is connected with the two rocker beams 2100 and the rear lower cross beam 3210 to form a fourth ring structure, and the connection in the ring structure is beneficial to improve the strength of the vehicle, especially the structural strength of the bottom of the vehicle body.

[0263] As shown in the figure, in the present disclosure, the rear floor middle cross beam 2513 is located on the front side of the rear compartment battery pack mounting member 6000, so that in the front-rear direction of the vehicle, the rear floor middle cross beam 2513 and the rear compartment battery pack mounting member 6000 can provide mounting points for the battery pack 4000 in the front-rear direction of the vehicle, which is beneficial to improve the reliability of the installation of the battery pack 4000.

[0264] As mentioned above, referring to the figure, at the bottom of the vehicle, the battery pack 4000, the two rocker beams 2100, the rear floor middle cross beam 2513, and the two rear compartment battery pack mounting members 6000 can be defined as a ring structure.

[0265] In the present disclosure, at least part of the upper surface of the battery pack 4000, such as part of the upper surface of the upper cover of the battery pack 4000, is formed as a vehicle floor. This design is beneficial in saving the Z-direction space of the vehicle bottom, increasing the accommodation space of the battery pack 4000 in the vehicle bottom, thereby facilitating the increase of the capacity of the battery pack 4000 and the cruising range of the vehicle, and simplifying the vehicle body structure and facilitating the lightweight of the vehicle.

[0266] In order to realize the sealed installation of the battery pack 4000 on the vehicle, especially when part of the upper surface of the battery pack 4000 is formed as a vehicle floor, the vehicle further comprises a sealing member 4100, and the battery pack 4000 is sealedly connected to the battery pack mounting surface on the vehicle through the sealing member 4100, so that the outside air or water and other substances can be prevented from entering the vehicle (passenger compartment) through the sealing member 4100.

[0267] As shown in the figure, in the present disclosure, the floor rear cross beam, the two rocker beams 2100, the two front compartment battery pack mounting members 5000, the front wall lower cross beam 1210, and the rear floor cross beam 2510 are connected to form a fifth ring-shaped structure, and the fifth ring-shaped structure has a hollow area, and part of the upper surface of the battery pack 4000 covering the hollow area is formed as a vehicle floor. By forming the fifth ring-shaped structure, the stiffness of the vehicle bottom can be improved. By connecting the fifth ring-shaped structure with the ring-shaped structure formed by the frame structure of the battery pack 4000, the connection strength of the battery pack 4000 and the integration of the vehicle body and the battery pack 4000 can be greatly improved.

[0268] In the present disclosure, as shown in the figure, the vehicle can further comprise a front brace beam 3640, one end of the front brace beam 3640 being connected to the rear wall upper cross beam 3220, and the other end of the front brace beam 3640 being connected to the rear longitudinal beam 3100. By providing the front brace beam 3640, a force transmission path in the front-rear direction other than the rear longitudinal beam 3100 can be added at the rear of the vehicle, which is beneficial for the transmission and dispersion of the front-rear directional collision force.

[0269] As shown in the figure, the vehicle can further comprise a rear wheel cover 3700, the rear wheel cover 3700 being connected to the rear longitudinal beam 3100, and the other end of the front brace beam 3640 being further connected to the rear wheel cover 3700, i.e., the front brace beam 3640 can transmit force through the wheel cover to increase the dispersion effect of force transmission.

[0270] As shown in the figure, in the vehicle height direction, the front brace beam 3640 and the rear longitudinal beam 3100 can be arranged in a spaced manner. In this way, in the up-down direction of the vehicle, the vehicle has two spaced paths for force transmission, thereby facilitating the transmission of collision forces at different positions of the vehicle.

[0271] As shown in the figure, the vehicle can further include a rear support beam 3650, one end of the rear support beam 3650 being connected with the rear wheel cover 3700, and the other end of the rear support beam 3650 being connected with the rear longitudinal beam 3100. In this way, the rear support beam 3650 is used to transmit force to the upper side force transmission path through the longitudinal beam, and the effect is better.

[0272] As shown in the figure, in the vehicle height direction, one end of the rear support beam 3650 is arranged in a spaced manner with the rear longitudinal beam 3100. In this way, in the up-down direction of the vehicle, the vehicle has two spaced paths for transmitting force, thereby facilitating the transmission of collision force at different positions of the vehicle.

[0273] As shown in the figure, the vehicle further includes a rear wheel cover cross beam 3710, both ends of the rear wheel cover cross beam 3710 being connected with two rear wheel covers 3700 arranged in a spaced manner in the vehicle width direction. In this way, the two rear wheel covers 3700 can be connected as a whole to improve the stiffness of the wheel cover. At the same time, the rear wheel cover 3700, the two rear longitudinal beams 3100, the rear wheel cover cross beam 3710, and the rear lower cross beam 3210 can be connected to form a frame (i.e., a ring structure), which can improve the stiffness of the vehicle body, especially the stiffness of the rear part of the vehicle body. In addition, the rear wheel cover 3700, the two rear longitudinal beams 3100, the rear wheel cover cross beam 3710, the two front support beams 3640, and the rear upper cross beam 3220 can also be connected to form a frame, which can further improve the stiffness of the vehicle body.

[0274] As shown in the figure, the vehicle can further include a first reinforcing beam 3610, the first reinforcing beam 3610 being connected with the front support beam 3640 and the wheel cover respectively. In this way, the front support beam 3640, the rear wheel cover 3700, the rear wheel cover cross beam 3710, and the first reinforcing beam can be connected to form a frame structure, which can reinforce the ring structure formed by the rear wall of the vehicle, improve the stiffness of the rear wall ring structure, and also improve the stiffness of the entire vehicle body.

[0275] As shown in the figure, in the present disclosure, the vehicle can further include a second reinforcing beam 3620 and a third reinforcing beam 3630, the upper end of the second reinforcing beam 3620 and the upper end of the third reinforcing beam 3630 can be connected with the front support beam 3640 respectively, and the lower end of the second reinforcing beam 3620 and the lower end of the third reinforcing beam 3630 can be connected with the rear compartment battery pack mounting member 6000 respectively, so as to increase the force transmission path and improve the stiffness of the vehicle.

[0276] Optionally, as shown in the figure, the second reinforcing beam 3620, the third reinforcing beam 3630, and the front support beam 3640 can form a triangular structure to enhance the stiffness.

[0277] As shown in the figure, in the present disclosure, the vehicle body structure further comprises a first cross beam 1230, two ends (left and right ends) of the first cross beam 1230 are connected with the two front compartment battery pack mounting members 5000 respectively, so that the two front compartment battery pack mounting members 5000 can be further connected as a whole, the rigidity of the front side of the vehicle is improved, and the force transmission path is increased. Wherein, referring to the figure, the first cross beam 1230, the two front compartment battery pack mounting members 5000 and the front wall lower cross beam 1210 can be connected to form a ring structure.

[0278] Optionally, the first cross beam 1230 can be a profile structure.

[0279] As shown in the figure, in the present disclosure, the first mounting portion is arranged on the front compartment battery pack mounting member 5000, and the first mounting portion is suitable for being connected with the front part of the battery pack 4000. The second mounting portion is arranged on the rear compartment battery pack mounting member 6000, and the second mounting portion is suitable for being connected with the rear part of the battery pack 4000.

[0280] Wherein, as shown in the figure, optionally, the first mounting portion can be configured as a first mounting surface, and the second mounting portion can be configured as a second mounting surface. The first mounting surface is provided with a first mounting hole, and the first mounting hole is suitable for cooperating with a fastener (such as a bolt) to mount the battery pack front cross beam 4300 of the battery pack 4000. The second mounting surface is provided with a second mounting hole, and the second mounting hole is suitable for cooperating with a fastener (such as a bolt) to mount the battery pack rear cross beam 4400 of the battery pack 4000.

[0281] In the present disclosure, as shown in the figure, the rocker beam 2100 comprises a body beam and a rocker reinforcement beam 2130 located in the body beam, and the rocker beam 2100 further comprises a rocker inner panel 2110 and a rocker outer panel 2120, the rocker inner panel 2110 and the rocker outer panel 2120 form the body beam.

[0282] The side wall inner panel 2220 of the vehicle is integrally formed with the rocker inner panel 2110, which is equivalent to that the lower part of the side wall inner panel 2220 corresponding to the rocker reinforcement beam 2130 is configured as the rocker inner panel 2110. The side wall outer panel 2210 of the vehicle is integrally formed with the rocker outer panel 2120, which is equivalent to that the lower part of the side wall outer panel 2210 corresponding to the rocker reinforcement beam 2130 is configured as the rocker outer panel 2120.

[0283] As shown in the figure, the first casting further comprises a third mounting portion and a fourth mounting portion, the third mounting portion abuts against the side of the side wall inner panel 2220 (rocker inner panel 2110) facing the passenger compartment, and the fourth mounting portion is connected with the side wall inner panel 2220 and the rocker reinforcement beam 2130 through the first fastener, wherein the rocker reinforcement beam 2130 is located in the cavity enclosed by the side wall inner panel 2220 and the side wall outer panel 2210.

[0284] As shown in the figure, the vehicle further comprises a side wall inner plate reinforcing block 2222 (i.e. a threshold inner reinforcing profile 2140) located in the cavity, one end of the first fastener sequentially passes through the fourth mounting portion, the side wall inner plate 2220 and the side wall inner plate reinforcing block 2222, and is fixed to the threshold reinforcing beam 2130.

[0285] As shown in the figure, the third mounting portion extends along the width direction of the vehicle body frame, and the fourth mounting portion extends along the length direction of the vehicle body frame.

[0286] The C pillar 2400 of the vehicle can comprise a C pillar inner upright 2420 and a C pillar outer upright 2430, the C pillar inner upright 2420 is connected with the threshold reinforcing beam 2130 and is located in the cavity enclosed by the side wall inner plate 2220 and the side wall outer plate 2210, the rear compartment battery pack mounting member 6000 is further provided with a fifth mounting portion, the fifth mounting portion abuts against the rear end of the side wall inner plate 2220, and the fifth mounting portion is connected with the C pillar inner upright 2420 through a second fastener; the C pillar outer upright 2430 is connected with the side wall inner plate 2220 and the C pillar inner upright 2420 through a third fastener.

[0287] As shown in the figure, the fifth mounting portion can extend along the width direction of the vehicle.

[0288] As shown in the figure, the lower cross beam of the front wall plate 1200 is adapted to be connected with the front cross beam of the battery pack 4300,

[0289] In the length direction of the vehicle, the lower cross beam of the front wall plate 1200 is arranged to have a first overlapping area with the front cross beam of the battery pack 4300, the lower cross beam of the rear wall plate 3200 is adapted to be connected with the rear cross beam of the battery pack 4400, in the length direction of the vehicle, the lower cross beam of the rear wall plate 3200 is arranged to have a second overlapping area with the rear cross beam of the battery pack 4400, optionally, the length of the first overlapping area in the length direction of the vehicle body frame is 80-120mm, and the length of the second overlapping area in the length direction of the vehicle body frame is 80-120mm, by arranging the above-mentioned first overlapping area and the second overlapping area, the side of the battery pack 4000 as a whole is protected.

[0290] In the present disclosure, as shown in the figure, the vehicle can further comprise a seat front cross beam 2630, a seat rear cross beam 2620, a floor middle cross beam and a floor middle cross beam reinforcing beam;

[0291] The floor middle cross beam is located behind the seat rear cross beam 2620, and the two ends of the floor middle cross beam are respectively connected to the two side wall inner plates 2220 (connected to the two threshold beams 2100) of the vehicle body frame, and the central channel 2700 is sequentially connected with the No. 1 cross beam 1230, the lower cross beam of the front wall plate 1200, the seat front cross beam 2630, the seat rear cross beam 2620, the floor middle cross beam and the middle cross beam reinforcing beam from front to rear.

[0292] In this way, the central tunnel 2700 covers the plurality of root cross beams from front to back, and the central tunnel 2700 enhances the first annular structure at the front end of the vehicle and the sixth annular structure at the bottom from front to back, forming a "through" central tunnel 2700 structure.

[0293] When the seat assembly of the vehicle (not shown in the figure, which can be assembled on the front seat cross beam 2630 and the rear seat cross beam 2620) is subjected to Z-direction load (such as high-speed sudden acceleration and sudden deceleration), the covering structure of the central tunnel 2700 will minimize the risk of the seat being pulled up. And this "through" central tunnel 2700 structure is beneficial to the transmission and dispersion of the frontal and side impact forces.

[0294] As shown in the figure, the first cross beam 1230 is internally hollow and provided with reinforcing ribs, which can be flush with the upper surface of the front end of the central tunnel 2700.

[0295] As shown in the figure, the front end of the first cross beam 1230 has an inclined surface, and the upper end of the inclined surface is located in front of the lower end of the inclined surface. This arrangement is convenient for avoiding the wiring of the vehicle, for example, avoiding the motor wiring.

[0296] In the present disclosure, a scheme is adopted that the battery pack 4000 can extend forward towards the front subframe and extend backward towards the rear subframe without being hindered by the bodywork, so as to increase the capacity of the battery pack 4000.

[0297] Optionally, as shown in the figure, the front compartment battery pack mounting member 5000 can be provided with mounting points for mounting the front subframe, and the rear compartment battery pack mounting member 6000 can be provided with mounting points for mounting the rear subframe.

[0298] For example, referring to the figure, the front compartment battery pack mounting member 5000 is provided with a sixth mounting portion for mounting the front subframe, and the rear compartment battery pack mounting member 6000 is further provided with a seventh mounting portion for mounting the rear subframe.

[0299] In the present disclosure, the battery pack mounting member is located above and in front of the front end face of the battery pack 4000, and the lower beam of the front wall 1200 of the body frame is located above the front end face of the battery pack 4000, so that the front end of the battery pack 4000 can extend towards the front subframe of the body frame; the rear battery pack mounting member is located above and behind the rear end face of the battery pack 4000, so that the rear end of the battery pack 4000 can extend towards the rear subframe of the body frame. This design is beneficial to increasing the installation space of the battery pack 4000 in the front-rear direction of the vehicle, and is beneficial to increasing the capacity of the battery pack 4000 and improving the endurance of the vehicle.

[0300] Optionally, as shown in the figure, the battery pack 4000 is mounted in front of the lower transverse beam 1210 of the front wall, the front end face of the battery pack 4000 is the frontmost end of the battery pack 4000; the front subframe rear transverse beam is mounted below the front compartment battery pack mounting member 5000, the front subframe rear mounting point is the rearmost end of the front subframe assembly 1300; a gap L1 can be provided between the front end face of the battery pack front transverse beam 4300 and the front subframe rear mounting point, and the width of the gap L1 can be 30-50 mm.

[0301] As shown in the figure, the lower end face of the lower transverse beam 1210 of the front wall is the lowermost end face of the lower transverse beam of the front wall, and other faces of the part are higher (in the Z direction) than the face. The lower end face of the front compartment battery pack mounting member 5000 is the lowermost end face thereof, and other faces of the part are higher (in the Z direction) than the face. That is, the battery pack front transverse beam 4300 can be provided extending forward without being hindered by the front mounting point of the battery pack 4000.

[0302] The battery pack rear transverse beam 4400 is mounted below the rear compartment battery pack mounting member 6000, the rear end face of the battery pack rear transverse beam 4400 is the rearmost end of the battery pack 4000 assembly; the rear subframe front transverse beam is mounted below the battery pack mounting member, and the rear subframe front mounting point thereof is the foremost end of the rear subframe assembly 3300; a gap L2 can be provided between the rear end face of the battery pack rear transverse beam 4400 and the rear subframe rear mounting point, and the width of the gap L2 can be 30-50 mm.

[0303] Specifically, the middle part of the rear compartment battery pack mounting member 6000 is provided with the rear subframe front mounting point, and the front part is provided with the rear mounting point of the battery pack 4000, which is located at the lowermost end face of the rear compartment battery pack mounting member, and other faces of the part are higher (in the Z direction) than the face. That is, the battery pack rear transverse beam 4400 can be provided extending rearward without being hindered by the mounting point.

[0304] In summary, the battery pack 4000 can be provided extending in the front-rear direction of the vehicle body without being hindered, and can be provided abutting against the sealing plate of the battery pack 4000 upward. The left and right can abut against the middle vertical face of the side wall inner panel 2220. That is, the battery pack 4000 can make maximum use of the space below the vehicle body, further increase the actual loadable battery quantity of the battery pack 4000 in the manner of physical volume improvement, and ultimately achieve the purpose of longer endurance.

[0305] The present disclosure adopts a "collapsible" lateral force transmission frame and achieves lateral load dispersion.

[0306] As shown in the figure, the vehicle also includes connecting pieces, the seat front cross beam 2630 and the seat rear cross beam 2620 can be connected with the side wall inner plate 2220 through the connecting pieces, and the seat front cross beam 2630 and the seat rear cross beam 2620 are located at the end of the width direction of the vehicle body frame and have a gap with the corresponding side wall inner plate 2220, wherein the connecting pieces are collapsible pieces.

[0307] The gap is set so that the side wall panel of the vehicle does not directly extrude the seat front cross beam 2630 (and its sealing plate) and the seat rear cross beam 2620 in the Y direction. Instead, a "collapsible" lateral force transmission frame is formed, thereby achieving dispersion and absorption of side load. This "collapsible" lateral force transmission frame achieves the Y direction load demand.

[0308] When installing, the battery pack 4000 can be assembled with the seat front cross beam 2630 and the seat rear cross beam 2620 first, and then the whole is installed on the vehicle body from the bottom of the vehicle in the Z direction. In this way, it is beneficial to ensure that the gap between the battery pack 4000 and the vehicle body is minimized, and the space below the vehicle body is maximized for the arrangement of the battery pack 4000, thereby facilitating the improvement of the endurance capability.

[0309] As shown in the figure, the side wall outer plate 2210 and the side wall inner plate 2220 form a closed cavity, and the inside lower layer is provided with a threshold beam 2100 penetrating from front to back; a front connecting block 2151 is arranged at the position of the seat front cross beam 2630, and a rear connecting block 2152 is arranged at the position of the seat rear cross beam 2620; and the two connecting blocks and the threshold beam 2100 are fixedly connected together through the threshold front diagonal bracing beam.

[0310] At the upper part of the sealing plate of the battery pack 4000, there are two states of force transmission between the side wall of the vehicle and the seat cross beam. The upper half: the threshold beam 2100 is transmitted through the connecting block, the threshold front diagonal bracing beam, and then transmitted to the seat cross beam (upper surface) through the seat cross beam connecting plate. The lower half: a Y direction gap L4 is arranged between the threshold beam 2100 (specifically the side wall inner plate 2220) and the seat cross beam (specifically the seat cross beam side end plate), and the width of L4 can be 5-10mm.

[0311] In summary, between the side wall of the vehicle and the seat cross beam, the upper part is directly fixed by the connecting block, and the lower part is connected by the gap L4, so when the side wall is subjected to side load, it will first pass through the upper half path, and then the lower half path will be energy-absorbed after the upper part is damaged.

[0312] The present disclosure adopts a structure in which the seat cross beam overlaps the side wall inner plate 2220 in the Y direction, the threshold is fixed through the seat cross beam and the frame of the battery pack 4000 at two places at the same time, and a stable frame is formed.

[0313] As shown in the figure, in the present disclosure, the end of the seat front cross beam 2630 and the seat rear cross beam 2620 has an overlapping area with the corresponding side wall inner plate 2220 (the door sill inner plate 2110) in the vehicle width direction.

[0314] As shown in the figure, the two ends of the seat cross beam are closed with a sealing plate, and the end thereof has a Y-direction overlapping area with the door sill inner plate 2110. Above this overlapping area, the side wall inner plate 2220 is internally provided with a connecting block and a diagonal support beam and other side wall assembly 2200 reinforcing parts. When the seat cross beam is subjected to a Z-direction upward load, the side wall will protect it from being pulled up too much to cause injury to the occupant.

[0315] As shown in the figure, the assembly formed by the battery pack 4000 and the seat front cross beam 2630 and the seat rear cross beam 2620 has multiple Z-direction fixed connections with the vehicle body, including between the seat cross beam connecting plate and the seat cross beam, between the battery pack longitudinal beam 4500 and the side wall inner plate 2220 (the door sill beam 2100). Through the above-mentioned multiple fixed connections, the integrity between the battery pack 4000 and the vehicle body is further enhanced, thereby forming a stable vehicle body-battery integrated frame.

[0316] As shown in the figure, the battery pack front cross beam 4300 can be connected with the front compartment battery pack mounting member 5000 and / or the lower cross beam of the front wall 1200, and the battery pack rear cross beam 4400 can be connected with the rear compartment battery pack mounting member 6000. The battery pack 4000 left longitudinal beam and the battery pack 4000 right longitudinal beam can be connected with the corresponding door sill reinforcing beam 2130, respectively.

[0317] As shown in the figure, in the present disclosure, the seat front cross beam 2630 and the seat rear cross beam 2620 are arranged above the upper cover plate of the battery pack 4000 and are arranged in parallel.

[0318] Taking the seat front cross beam 2630 as an example, the left and right ends of the seat front cross beam 2630 are arranged in a Y-direction overlapping and lapping structure with the battery pack longitudinal beam 4500, and are fixedly connected through two or more screws. The connection point is located on the inner side of the battery pack longitudinal beam 4500 (close to the vehicle interior), and is parallel to the arrangement mode of the mounting points of the battery pack 4000 itself. Moreover, the Y-direction gap between the mounting points of the battery pack 4000 and the screws is arranged to be 50-100 mm. Optionally, the seat front cross beam 2630 can be made of aluminum alloy extrusion process, such as closed square or eye-shaped extruded section; or can be made of high-strength steel, such as a few characters or M type; but the part shape is designed to be straight, arranged along the Y direction to maximize the effect of Y-direction force transmission. The two end faces of the above-mentioned seat front cross beam 2630 can be designed with a flat sealing plate to close it into a completely closed part.

[0319] Bottom connection: The two sides of the seat front cross beam 2630 are provided with flanges for connecting with the upper cover plate of the battery pack 4000, which can be connected and fixed by laser welding or gluing. If the seat front cross beam 2630 is in the form of aluminum extrusion, no flange is arranged at the gluing and welding position; if it is made of high-strength steel, the flange is welded with the upper cover plate of the battery pack 4000 to ensure the connection strength.

[0320] Middle connection: The seat front cross beam 2630 is connected with the battery pack 4000 in a screwing manner. Alternatively, the bolts can be arranged on the front middle cross beam 4600 and the rear middle cross beam 4700 of the battery pack 4000.

[0321] In summary, the battery pack 4000 and the front seat cross beam and the seat rear cross beam 2620 can be assembled into an assembly, and then the assembly is assembled with the vehicle body in the Z direction.

[0322] Y direction: As shown in the figure, the gap cooperation L4 between the side end plate and the middle surface of the side wall inner plate 2220, the gap cooperation L3 between the side end surface of the battery pack 4000 left longitudinal beam and the middle vertical surface of the side wall inner plate 2220, and the gap cooperation L5 between the outer end surface and the lower vertical surface of the side wall inner plate 2220.

[0323] Z direction: The seat front cross beam 2630 and the seat cross beam connecting plate are fixed on the upper surface of the seat front cross beam 2630 in a screwing manner. The left mounting point on the battery pack longitudinal beam 4500 is fixed to the lower side (specifically, the lower end surface of the side wall inner plate 2220) of the rocker beam 2100 in a screwing manner. The battery pack 4000 and the vehicle body are sealed by sealing foam.

[0324] In the above assembly process, the tolerances of Y direction and Z direction can be absorbed by the seat cross beam connecting plate. The sealing foam can be first pasted (assembled) on the upper cover plate of the battery pack 4000, and then the assembly 6Z is assembled from bottom to top in the Z direction.

[0325] As can be seen from the above Z direction assembly process, the gap between the battery pack 4000 and the vehicle body is greatly reduced, thereby greatly improving the space utilization of the battery pack 4000 under the vehicle body, and thereby improving the vehicle endurance.

[0326] In the present disclosure, a Z direction pure flat battery pack 4000 sealing plate structure is adopted to form a sealing scheme of the battery pack 4000 and the vehicle body.

[0327] Alternatively, as shown in the figure, the vehicle can include a sealing member 4100 arranged at the bottom of the vehicle body frame for sealing contact with the upper cover plate of the battery pack 4000.

[0328] Alternatively, the sealing member 4100 is configured as a flat member with a ring shape and a uniform thickness.

[0329] As shown in the figure, the mounting surface of the battery pack 4000 on the front compartment battery pack mounting component 5000, the lower end surface of the lower crossbeam of the front bulkhead 1200, the middle surface of the inner side panel 2220, and the lower end surface of the rear floor 2500 are flush with the height direction of the vehicle frame to jointly construct a mounting surface for installing the seal 4100.

[0330] As shown in the figure, the inner side panel 2220 has a stepped cross-section and three transverse (flat) planes from the inside to the outside, including the middle surface of the inner side panel 2220.

[0331] The mounting surface of the aforementioned battery pack 4000 is a completely flat surface on the XY plane, which can be parallel to the XY plane of the entire vehicle. The lower end face of the lower crossbeam of the front bulkhead 1200, the middle surface of the inner side panel 2220, and the lower end face of the rear floor 2500 are at the same Z-axis height as the mounting surface of the battery pack 4000; thus forming a completely flat mounting surface in the Z-axis direction. The battery pack 4000 sealing element 4100 is set below this mounting surface and is connected and fixed by structural adhesive.

[0332] The aforementioned seal 4100 can be a flat plate part with a thickness of 1-5mm (Z-axis), surrounding the mounting surface, and has a hollow, U-shaped structure. The sealing plate and the battery pack 4000 are sealed together with sealing foam to prevent outside air or water from entering the vehicle interior (passenger compartment). The sealing foam can be made of silicone or other sealing materials, but it has a planar structure (parallel to the XY plane).

[0333] In this disclosure, referring to the figures, the upper crossbeam of the front bulkhead 1200 forms a closed cavity with the front bulkhead 1200 and extends horizontally through the upper part of the front bulkhead 1200, connecting to the two inner side panels 2220. The inner side panels 2220 and the outer side panels 2210 form a closed cavity at the front A-pillar 2300 of the passenger compartment. At this A-pillar 2300, within the cavity formed by the inner side panels 2220 and the outer side panels 2210, an inner side panel sealing plate 2221 is also provided; and a sill beam 2100 is located at the lower part of the cavity. At the lower part of the inner side panel 2220, a front compartment battery pack mounting component 5000 is connected.

[0334] As shown in the figure, the rear wall upper transverse beam 3220 can include a roof rear transverse beam upper plate 2820 and a rear transverse beam lower plate, the roof rear transverse beam upper plate 2820 and the rear transverse beam lower plate are buckled to form a closed cavity, and are connected to the side wall left and right through. The outer side is specifically connected with the C column 2400 rear reinforcement plate, and the inner side is connected with the side wall inner plate 2220. The side wall inner plate 2220 and the side wall outer plate 2210 form a closed cavity at the rear end of the passenger compartment C column 2400 position. At this C column 2400 position, the C column 2400 rear reinforcement plate is also arranged in the cavity, which forms a closed cavity with the side wall inner plate 2220. The rear compartment battery pack mounting 6000 is in abutment with the side wall inner plate 2220 and the rear wall plate 3200 forwardly. The rear wall lower transverse beam 3210 is arranged at the rear lower part of the rear wall plate 3200 and penetrates left and right, and the rear wall lower transverse beam 3210 is communicated with the side wall inner plate 2220 through the rear compartment battery pack mounting 6000.

[0335] In summary, in the present disclosure, by arranging a plurality of ring structures, for example, the first ring structure L001, the second ring structure, the third ring structure L003, the fourth ring structure, the fifth ring structure L005, the sixth ring structure and the seventh ring structure L007, and connecting the corresponding ring structures, the battery pack 4000 and the vehicle body form an integrated force transmission frame. When the battery pack 4000 is subjected to a front or side external force (such as in the case of a whole vehicle frontal crash, side crash or side column crash), the force can be transmitted through the directly connected rings. Through the above-mentioned related effects of the plurality of ring structures, the torsional stiffness and modal of the whole vehicle can be greatly improved, and the crash performance of the whole vehicle can be improved; moreover, the first ring structure L001 at the front end and the third ring structure L003 at the rear end are arranged vertically with the bottom ring structure (such as the second ring structure and the sixth ring structure) on the battery pack 4000, and the second ring structure and the sixth ring structure are arranged in parallel with the seventh ring structure of the battery pack 4000, which further protects the battery pack 4000 from the maximum damage caused by the impact.

[0336] Through the above-mentioned scheme, a vehicle body battery integrated frame structure with good whole vehicle crash force transmission effect and maximum battery pack 4000 space utilization rate can be obtained.

[0337] In the present disclosure, the vehicle can be a hybrid vehicle or an electric vehicle, and the present disclosure does not limit this. In addition, the present disclosure does not limit the vehicle type, which can be a sedan or other vehicle type, for example, a sports car.

[0338] Optionally, the vehicle of the present disclosure can be a pure electric vehicle without a traditional B column, and in particular, a pure electric sports car without a traditional B column.

[0339] Automobile lightweighting is the core technology and important development direction of the automobile industry, and has become the development strategy of the national manufacturing industry. It refers to reducing the weight of the whole vehicle without reducing the safety, reliability, comfort and cost controllability of the whole vehicle, so as to improve the power economy of the vehicle. With the implementation of the national carbon neutral energy-saving and emission reduction policy, the future development direction of automobiles must be fully electric. However, due to the fact that the specific energy of the battery is much lower than that of fuel, in order to achieve the same range as a fuel vehicle, the weight of the battery generally needs to be increased to more than 500 kg, accounting for about 20-30% of the weight of the whole vehicle. Therefore, the lightweighting demand of new energy vehicles, especially pure electric high-range vehicles, is more urgent.

[0340] As one of the five major components of the whole vehicle, the body-in-white accounts for about one-fourth of the weight of the whole vehicle. The purpose of automobile lightweighting can be achieved by reducing the weight of the body-in-white. The weight reduction of the body-in-white can be achieved by material substitution, structure optimization, process optimization, etc. For example, the use of ultra-high strength steel, hot forming steel, aluminum alloy, plastic and reinforced composite materials can achieve weight reduction of the body-in-white. Among them, carbon fiber reinforced plastic (CFRP) has the advantages of high specific strength (more than 5 times that of steel), large design freedom, corrosion resistance and fatigue resistance. The use of CFRP to replace steel body can ultimately achieve a weight reduction of about 40%-50%. However, at present, the research on carbon fiber reinforced plastic for vehicle body in China mainly focuses on the application of individual parts such as hoods, roof covers and other coverings. There is little in-depth research on the application of carbon fiber reinforced plastic to vehicle body structure assemblies, and mass production is a long way to go.

[0341] As we all know, there is no precedent for the development of new energy sports cars in the industry. First of all, sports cars require ultra-high performance, and the body architecture needs to be broken through to meet higher performance and lighter weight. The existing body architecture is generally in the form of traditional metal, which is difficult to meet the high performance requirements of sports cars. Second, the extreme driving performance of sports cars is common, and if you need to integrate driving comfort, such as air suspension, it will be a huge challenge.

[0342] Of course, sports cars also need to meet certain appearance requirements, such as lower height than traditional passenger cars, and more low and forward-looking front-end design. However, for new energy vehicles, especially pure electric vehicles, three-electric systems such as powertrains (battery pack 4000), motors and electronic controls are essential. At the same time, the volume and performance of these systems have a certain positive correlation; for example, if you want to achieve ultra-high vehicle horsepower or dynamic rate, you need to arrange more motors, and if you want to achieve ultra-long range, you need to arrange more battery pack 4000 modules. All of the above have put forward more requirements for the body architecture of pure electric sports cars.

[0343] At present, the more direct way for sports cars is to borrow traditional passenger car components. However, this measure will bring many problems such as vehicle layout, collision safety strategy, configuration distribution, etc.

[0344] The pure electric sports car is a two-door form without a traditional B-pillar structure, and the B-pillar structure has a great influence on the side crash and roof crush test of the whole vehicle. In order to meet the requirements of the severe side crash and roof crush, a new side wall reinforcing structure needs to be designed without the traditional B-pillar. Therefore, the whole vehicle can meet the requirements through the design of the vehicle body and the connection design with the battery pack 4000.

[0345] In the foregoing, the relative positions and corresponding connection relationships of the front longitudinal beam 1100, the battery pack mounting member (front cabin battery pack mounting member 5000 and rear cabin battery pack mounting member 6000), the rocker beam 2100, the A-pillar 2300, the C-pillar 2400, the first cross beam 1230, the front wall lower cross beam 1210, the front wall upper cross beam 1220, the front wall plate 1200, the side wall plate, the rear wall plate 3200, the rear wall lower cross beam 3210, the rear longitudinal beam 3100, the floor middle cross beam, the floor rear cross beam, the central channel 2700, the seat cross beam, the battery pack 4000 and other components are introduced. The specific connection structure between the related components will be introduced in detail below in combination with the drawings.

[0346] A vehicle is provided, comprising a front cabin frame 1000, a passenger cabin frame 2000, and a rear cabin frame 3000. Connection castings can be added between the front cabin and the passenger cabin, and between the rear cabin and the passenger cabin. The connection castings can be used for mounting battery packs, transmitting forces, and other structures.

[0347] For the convenience of description, the connection castings between the front cabin and the passenger cabin are defined as battery pack mounting members, and the connection castings between the rear cabin frame 3000 and the passenger cabin are defined as connection integrated members 6000. The battery mounting members and the connection integrated members can be connected to multiple vehicle body structure members, which will be introduced separately below.

[0348] I. Connection integrated member

[0349] As shown in the figure, in the front-rear direction of the vehicle, the connection integrated member 6000 can be arranged between the rear cabin frame 3000 and the passenger cabin frame 2000, and is connected with the rear cabin frame 3000 and the passenger cabin frame 2000 respectively. The connection integrated member can be a one-piece member. It needs to be explained that the "one-piece member" here refers to a single component, which can be a one-piece member or a member formed by connecting multiple components. Compared with the traditional scheme in which the front cabin frame 1000 and the passenger cabin frame 2000 are connected by splicing (electric welding, soldering, screwing, etc.) of multiple sheet metal members, the integration degree of the connection integrated member can be improved, and the assembly process can be simplified.

[0350] In the embodiment in which the connecting integrated part is integrally formed, since the splicing of multiple components causes the strength of the connecting area to present a faulted distribution (there are failure points, and the connecting strength is low), or a redundant structure of the lap joint edge (affecting lightweight), the integrally formed design can effectively avoid the foregoing problems and achieve lightweight and improve the stiffness of the integrated part. Meanwhile, topological optimization design can also be added to further theoretically improve the lightweight design effect and the rationality of the strength of the force transmission path.

[0351] As shown in the figure, in the embodiment of the present disclosure, the connecting integrated part can be formed with a first mounting surface, which can be configured as at least part of the battery pack mounting surface. By fixing the battery pack to the connecting integrated part through the first mounting surface, on the one hand, the stiffness of the battery pack mounting point can be improved, and on the other hand, when the vehicle receives an impact on the rear compartment frame 3000, the impact force can be transmitted to the battery pack through the connecting integrated part, so that the impact can be dispersed by the battery pack, the stiffness of the vehicle body can be improved by using the large area attribute of the battery pack, and the damage to the passenger compartment frame 2000 can be reduced.

[0352] As shown in the figure, in the embodiment of the present disclosure, the passenger compartment frame 2000 can include a rocker beam 2100, and at least part of the bottom surface of the rocker beam can be configured as at least part of the battery pack mounting surface. By forming the battery pack mounting surface on the rocker beam, the connecting strength of the battery pack and the vehicle body can be further improved, and the battery pack and the rocker beam are connected as a whole, so that the impact force from the rear can be better dispersed, and damage caused by stress concentration can be avoided.

[0353] As shown in the figure, in the embodiment of the present disclosure, the first mounting surface is flush with at least part of the bottom surface of the rocker beam 2100 in the horizontal plane. It needs to be explained that "flush" here does not require the first mounting surface to be absolutely the same height as at least part of the bottom surface of the rocker beam in the height direction, but means that the first mounting surface and at least part of the bottom surface of the rocker beam are close to the same height to facilitate the installation of the battery pack. In this way, when the battery pack is installed on the vehicle body, since the first mounting surface and at least part of the bottom surface of the rocker beam are flush, only the upper side connecting surface of the battery pack needs to be buckled with the first mounting surface and at least part of the bottom surface of the rocker beam, there is no installation interference, and it is beneficial to reduce the height of the vehicle body.

[0354] As shown in the figure, in the embodiments of the present disclosure, at least part of the first mounting surface can be located on the inner side of the rocker beam 2100 in the vehicle width direction. The "inner side" here refers to the side of the rocker beam close to the vehicle center axis in the vehicle width direction. In this way, the integrated part supports the battery pack in the length direction while also supporting the battery pack in the width direction, which can expand the connection area of the battery pack and the vehicle body, thereby improving the mounting stability and strength of the battery pack and the rocker beam, improving the integration, and improving the integration of the battery pack and the vehicle body. At the same time, the extension of the battery pack in the width direction can be expanded, and the volume can be increased.

[0355] As shown in the figure, in the embodiments of the present disclosure, the passenger compartment frame 2000 can further include a first connecting plate connected with the rocker beam. The two sides of the first connecting plate are connected with the rocker beams on both sides, which improves the stability of the vehicle body frame connection and improves the force transmission effect.

[0356] Further, as shown in the figure, in the embodiments of the present disclosure, a battery pack can also be included, and the battery pack and the first connecting plate can be spaced apart in the vehicle height direction to form an accommodation space. The accommodation space can be used to place a vehicle-mounted charger, and at this time, the battery pack can serve as a base for placing the vehicle-mounted charger. The vehicle-mounted charger and the battery pack can be detachably connected. In this case, the rocker beams on both sides of the first connecting plate can protect the vehicle-mounted charger in the accommodation space.

[0357] As shown in the figure, in the embodiments of the present disclosure, the passenger compartment frame 2000 can further include a second connecting plate 2500 connected with at least one of the first connecting plate and the rocker beam 2100. The battery pack, the first connecting plate, the second connecting plate 2500, and the rocker beam can form an accommodation space. The left and right sides of the accommodation space are the rocker beams and the side wall assembly 2200 of the vehicle, the lower side is the battery pack, and the front side is the second connecting plate 2500. The second connecting plate 2500 can also form a floor beam (the floor beam is formed by the first connecting plate, the rear floor cover plate, and the front floor beam) with other components. These components form a relatively firm accommodation space to protect the vehicle-mounted charger. At the same time, a cavity (accommodation space) for energy absorption is also formed on the rear side of the vehicle to reduce the risk of passengers in the passenger compartment.

[0358] As shown in the figure, in the embodiments of the present disclosure, the front floor beam can include an upper cross beam and a lower cross beam. The upper cross beam, the lower cross beam, and the battery pack can be connected in the height direction. The upper cross beam at least partially extends forward between the rear floor cover plate and the rear floor. The lower cross beam is connected with the battery pack to connect the battery pack with the vehicle body.

[0359] As shown in the figure, in the embodiments of the present disclosure, the floor beam, the rocker beam, and the cross beam of the battery pack can form a closed loop structure to improve the force transmission and torsional performance of the vehicle body.

[0360] As shown in the figure, in the embodiment of the present disclosure, the battery pack, the first connecting plate, the second connecting plate 2500, the rocker beam 2100 and the connecting integrated piece 6000 can form an accommodation space. In this way, the connecting integrated piece can also protect the on-board charger in the accommodation space at the rear end.

[0361] The present disclosure does not limit the connection form of the first connecting plate and the second connecting plate 2500. For example, in the embodiment of the present disclosure, the first connecting plate and the second connecting plate 2500 can be integrally formed. In this way, the assembly steps of the vehicle can be reduced and the assembly process difficulty can be reduced.

[0362] In order to facilitate the maintenance of the equipment in the accommodation space, as shown in the figure, in the example of the present disclosure, a maintenance opening 2521 can be arranged on the first connecting plate. When the equipment in the accommodation space needs to be maintained, the maintenance can be carried out by only opening the maintenance opening from the lower side.

[0363] As shown in the figure, in the embodiment of the present disclosure, two connecting integrated pieces are arranged in the vehicle width direction, and the vehicle can also include a rear wall cross beam, the two ends of the rear wall cross beam can be connected with the two connecting integrated pieces respectively. In this way, on the one hand, the force transmission capacity of the connecting integrated piece can be improved, that is, in addition to the front and rear transmission, the force can also be transmitted to the two sides, on the other hand, when the battery pack is connected with the connecting integrated piece, in addition to the stiffness of the passenger compartment can be improved, the rear wall cross beam can also restrain the overturning of the front longitudinal beam 1100 in the vertical direction. Specifically, connecting the rear wall cross beam with the connecting integrated piece, when the vehicle is impacted from the rear, the connecting integrated piece can transmit the impact to the rear wall cross beam, and then disperse the impact force to the rear wall 3200 and the like through the rear cross beam, so as to avoid the damage of stress concentration to the passenger compartment frame 2000. In the embodiment of the present disclosure, the rear wall cross beam can be integrally formed.

[0364] As shown in the figure, in the embodiment of the present disclosure, the connecting integrated piece 6000 can also include a connecting part 6100, one end of the connecting part can be connected with the rear wall cross beam, and the other end can be formed as a rear longitudinal beam connecting part 6110. By connecting the rear longitudinal beam 3100 and the rear wall cross beam through the connecting integrated piece, when the rear side of the vehicle is impacted, the impact force of the rear longitudinal beam to the front can be transmitted to the rear wall cross beam through the connecting integrated piece, and then the impact force is dispersed to the rear wall 3200 and the like. Specifically, as shown in the figure, the connecting part is provided with an accommodation part on the side away from the rocker beam of the vehicle, and the rear wall cross beam is connected through the accommodation part.

[0365] Further, in order to better transmit force between the rear longitudinal beam and the rear wall cross beam in the front-rear direction, as shown in the drawings, in the embodiments of the present disclosure, the projection of the rear wall cross beam in the front-rear direction of the vehicle can at least partially overlap with the projection of the longitudinal beam connecting portion in the front-rear direction of the vehicle. The overlapping part can better transmit force when force is transmitted from back to front. In addition, the transmission area can be effectively increased, the pressure can be reduced, and the rear longitudinal beam can be prevented from intruding into the passenger compartment under force. It should be noted that in some other embodiments, the projection of the rear wall cross beam in the front-rear direction of the vehicle can fully overlap with the projection of the rear longitudinal beam connecting portion in the front-rear direction of the vehicle. The size of the overlapping part in the present disclosure is not limited.

[0366] As shown in the drawings, in the embodiments of the present disclosure, the upper surface of the connecting integrated part can include a protruding plate extending forward from the front end, used for lapping on the upper surface of the rear wall cross beam, the lower surface of the connecting integrated part is used for aligning with the lower surface of the rear wall cross beam, wherein the protruding plate is used for connecting with the upper surface of the rear wall cross beam, and the front surface of the connecting integrated part is used for connecting with the rear surface of the rear wall cross beam. The cross section of the rear wall cross beam can be configured as a day-shaped, and the connecting integrated part can further be formed with a first reinforcing rib j10 aligned with the first intermediate rib j12 of the rear wall cross beam. Through the above design, the force transmission effect between the connecting integrated part and the rear wall cross beam can be improved.

[0367] Similarly, in the embodiments of the present disclosure, the projection of the rear longitudinal beam in the front-rear direction of the vehicle can at least partially overlap with the projection of the rear wall cross beam in the front-rear direction of the vehicle, so as to better transmit the force of the rear longitudinal beam to the rear wall cross beam.

[0368] As shown in the drawings, in the embodiments of the present disclosure, the projection of the rear wall cross beam in the left-right direction of the vehicle can at least partially overlap with the projection of the rear longitudinal beam connecting portion in the left-right direction of the vehicle. In this way, the force can be transmitted in the vehicle width direction, for example, when the rear longitudinal beam 3100 is impacted in the vehicle width direction, the force can be transmitted to the rear wall cross beam.

[0369] As shown in the drawings, in order to ensure ventilation of the above-mentioned accommodation space and avoid heat damage, as shown in the drawings, in the embodiments of the present disclosure, the rear wall cross beam and the battery pack 4000 are arranged in the vehicle height direction. The battery pack and the rear wall cross beam form a ventilation opening communicating with the accommodation space. In addition to the ventilation function, the above-mentioned ventilation opening can also buffer the components arranged in the accommodation space, for example, when the vehicle is impacted on the front side, the components in the accommodation space can be displaced backward through the ventilation opening to be buffered, so as to reduce the collision damage caused by the impact.

[0370] In order to form the above-mentioned accommodation space and ventilation opening, as shown in the drawings, in the embodiments of the present disclosure, in the vehicle height direction, the rear wall cross beam can be located on the side of the first connecting plate away from the battery pack

[0371] In order to form the above-mentioned accommodation space and ventilation opening, as shown in the drawings, in the embodiments of the present disclosure, in the vehicle height direction, the first connecting plate can be located on the upper side of the first mounting surface.

[0372] In order to connect the rear subframe assembly 3300 and the connecting integrated part, as shown in the drawings, in the embodiments of the present disclosure, the connecting integrated part can be formed with a rear subframe mounting point. In this way, the rear subframe assembly is mounted on the connecting integrated part, and when the rear side of the vehicle is impacted, the impact force from the rear longitudinal beam can be greatly dispersed to the entire vehicle body floor structure through the rear subframe assembly, and the rear subframe assembly participates in the force transmission of the entire vehicle bottom, thereby improving the performance of collision safety, torsional stiffness, etc.

[0373] As shown in the drawings, in the embodiments of the present disclosure, in the vehicle height direction, the plane where the rear subframe mounting point is located is on the upper side of the first mounting surface. In this way, when the rear subframe assembly moves forward under the impact of the rear side impact force, since it is staggered with the battery pack 4000 in the height direction, the rear subframe assembly can avoid directly impacting the battery pack and causing damage to the battery pack. Specifically, when the connecting integrated part is configured as a stepped shape as shown in the drawings, the rear subframe assembly can directly transmit the force to the connecting integrated part through the front side step surface when it is under stress, and further disperse the force through other components cooperating with the connecting integrated part. Specifically, in the shown embodiment, the connecting integrated part can be configured as a stepped shape and include a first step 1-3 and a second step 1-2 adjacent in the height direction, the rear end of the first step 1-3 is closer to the passenger compartment than the rear end of the second step 1-2, the second step 1-2 is provided with the above-mentioned rear subframe mounting point, and the first step 1-3 is located on the front side of the rear subframe mounting point to limit the forward displacement of the rear subframe assembly 3300.

[0374] In some embodiments, the rear subframe mounting point can be closer to the above-mentioned connecting part for connecting the rear quarter beam in the height direction. In this way, the force can be better transmitted to the rear quarter beam, and the moment of force in the vertical direction can be reduced.

[0375] As shown in the drawings, in the embodiments of the present disclosure, in the vehicle front-rear direction, the rear subframe mounting point can be located on the rear side of the connection between the battery pack 4000 and the connecting integrated part 6000 of the vehicle. In this way, on the one hand, the rear subframe can be formed as a rear side limiting surface of the battery pack, so that the battery pack can extend to the subframe all the time, thereby increasing the capacity of the battery pack, and on the other hand, when the rear subframe assembly transmits force forward, the battery pack can also be used as a force transmission path, thereby increasing a force transmission path and further dispersing the force.

[0376] As shown in the figure, in the embodiment of the present disclosure, in the vehicle height direction, the first mounting surface 6001 can be located on the lower side of the rear subframe mounting point, and the rear longitudinal beam connecting portion 6110 can be located on the upper side of the rear subframe mounting point. In this way, a multi-layer force transmission path can be formed in the height direction of the vehicle, and the damage to the passenger compartment can be reduced.

[0377] As shown in the figure, in the embodiment of the present disclosure, the connecting integrated piece can further include a rear longitudinal beam connecting portion, which can be located on the rear side of the rear subframe mounting point in the vehicle front-rear direction. When the vehicle is subjected to a rear side impact force, the rear longitudinal beam is first subjected to the force. By arranging the rear longitudinal beam connecting portion on the rear side, a multi-layer force transmission structure can be formed, and the cross-sectional area of the connecting integrated piece can gradually increase from the rear to the front.

[0378] As shown in the figure, in the embodiment of the present disclosure, in the vehicle height direction, the rear longitudinal beam connecting portion can be located on the upper side of the plane where the rear subframe mounting point is located. In this way, when the vehicle is subjected to a rear side impact, a double-layer force transmission path can be formed in the front-rear direction, stress concentration can be avoided, and the damage to the passenger compartment can be reduced.

[0379] Specifically, as shown in the figure, in the embodiment of the present disclosure, the connecting integrated piece can include a third step 1-1 adjacent to a second step 1-2 in the height direction, and the rear end of the second step 1-2 is closer to the driver's cabin than the rear end of the third step 1-1. The rear longitudinal beam 3100 and the rear wall cross beam are arranged on the third step 1-1, respectively, so that in the height direction, the rear wall cross beam can be flush with the rear longitudinal beam.

[0380] Specifically, as shown in the figure, in the embodiment of the present disclosure, the rear end of the connecting integrated piece can form a first opening, and the rear longitudinal beam can extend into and be fixed in the first opening. The cross section of the rear longitudinal beam can be configured as a double-port type, and chamfers are formed at the corners to improve the connection strength and force transmission effect between the two.

[0381] As shown in the figure, in the embodiment of the present disclosure, the passenger compartment frame 2000 can include a rocker beam 2100, and the connecting integrated piece is connected to the rear end of the rocker beam. By connecting the connecting integrated piece and the rocker beam, when the vehicle is subjected to a rear side impact, the impact force of the rear longitudinal beam can be transmitted to the rocker beam through the connecting integrated piece, and then the impact force can be dispersed, thereby improving the vehicle crash safety, torsional stiffness and other performances.

[0382] As shown in the figure, in the embodiments of the present disclosure, the rocker beam can have a first connecting surface and a second connecting surface intersecting with each other, and the first connecting surface and the second connecting surface can be connected with the connecting integrated piece. The present disclosure does not limit the intersecting angle, which can be 90 degrees, 80 degrees, etc. In this way, on the one hand, force can be transmitted from two different angles, and the passenger compartment can be protected from different angles; on the second hand, the rocker beam, the connecting integrated piece and the battery pack can be better connected, and the two angles can be reinforced to integrate them into a whole, thereby improving the connection stiffness; on the third hand, the rear wall transverse beam, the two connecting integrated pieces and the battery pack can form a closed ring here, and the ring is connected with the rocker beam, which can improve the force transmission performance in the front-rear and left-right directions.

[0383] The present disclosure does not limit the first connecting surface and the second connecting surface, for example, in the shown embodiment, the first connecting surface can be located at the rear side end surface of the rocker beam 2100, and the connecting integrated piece can be directly connected with the first connecting surface. By directly connecting the connecting integrated piece with the rear side end surface of the rocker beam, the connecting integrated piece can directly transmit the rear side impact force to the rocker beam, thereby improving the force transmission effect between them.

[0384] In the shown embodiment, the vehicle can further include an intermediate connecting piece 2430, the second connecting surface can be the inner side surface of the rocker beam, and the connecting integrated piece can be connected with the second connecting surface through the intermediate connecting piece 2430. In this way, the force transmission area of the connecting integrated piece and the rocker beam can be increased, and the force transmission effect can be improved.

[0385] The present disclosure does not limit the structure of the intermediate connecting piece 2430, for example, in the shown embodiment, the intermediate connecting piece 2430 can include a third connecting surface and a fourth connecting surface, the third connecting surface can be connected with the second connecting surface, and the fourth connecting surface can be connected with the connecting integrated piece. Thus, the connecting integrated piece can be connected with the inner side surface of the rocker beam through the intermediate connecting piece 2430. Specifically, the cross section of the intermediate connecting piece 2430 can be a triangle as shown in the figure, and in this way, due to the stability of the triangle, the strength is higher, and the space utilization can be improved compared with a square.

[0386] The present disclosure does not limit the positional relationship between the fourth connecting surface and the first connecting surface, for example, in the shown embodiment, the fourth connecting surface can be parallel to the first connecting surface or can be located on the same plane. In this way, the force transmission area in the front-rear direction can be increased, and the connecting integrated piece can transmit force to the rocker beam 2100 and the intermediate connecting piece 2430 at the same time, so as to avoid excessive pressure when only contacting one of them.

[0387] In order to make the connecting integrated piece better transmit to the rocker beam in the front-rear direction, as shown in the figure, the projection of the rocker beam in the front-rear direction of the vehicle and the projection of the connecting integrated piece in the front-rear direction of the vehicle can at least partially overlap.

[0388] Similarly, in order to better transmit force between the connecting integrated piece and the rocker beam in the vehicle width direction, as shown in the drawings, in embodiments of the present disclosure, the projection of the rocker beam in the vehicle left-right direction and the projection of the connecting integrated piece in the vehicle left-right direction can at least partially overlap.

[0389] The present disclosure does not limit the specific structure of the rocker beam 2100, for example, in embodiments of the present disclosure, the rocker beam can include a body 2100a and a rocker reinforcement beam 2130, the body is provided with a rocker reinforcement beam accommodating space 2101, and the rocker reinforcement beam is arranged in the rocker reinforcement beam accommodating space 2101. Here, in embodiments of the present disclosure, the body can be a cavity formed by the outer panel 2210 and the inner panel 2220 of the side wall of the vehicle, wherein the portions of the outer panel and the inner panel corresponding to the rocker beam can also be called the rocker beam outer panel and the rocker beam inner panel, and the rocker beam outer panel can be integrally formed with the outer panel, and the rocker beam inner panel can be integrally formed with the inner panel. The connecting integrated piece, the body, and the rocker reinforcement beam can all be connected, and the intermediate connecting piece 2430 can be connected to the body and the rocker reinforcement beam. By connecting the connecting integrated piece to the body 2100a and the rocker reinforcement beam, the connection strength of the connecting integrated piece and the rocker beam can be ensured. The present disclosure does not limit the connection mode of the intermediate connecting piece 2430 and the rocker reinforcement beam, for example, it can be indirectly connected through the side reinforcement 2420 and the rocker reinforcement beam which will be described below.

[0390] As shown in the drawings, in embodiments of the present disclosure, the vehicle can also include a side reinforcement 2420, at least part of the side reinforcement 2420 is arranged in the rocker reinforcement beam accommodating space 2101, and the side reinforcement 2420 is connected to the rocker reinforcement beam and the body 2100a. Specifically, in the embodiment shown, the connecting integrated piece can be connected to the side reinforcement 2420 and the intermediate connecting piece 2430 through fasteners, respectively, the side reinforcement 2420 is connected to the rocker reinforcement beam, and at the same time, the side reinforcement 2420 is also connected to the intermediate connecting piece 2430 through fasteners. In this way, by arranging the side reinforcement 2420, the connection strength of the C pillar 2400, the rocker beam 2100, and the connecting integrated piece can be ensured, and the strength of the rocker beam and the A pillar 2300 can be improved.

[0391] As shown in the drawings, in embodiments of the present disclosure, the projection of the rocker reinforcement beam 2130 in the vehicle width direction, the projection of the intermediate connecting piece 2430 in the vehicle width direction, and the projection of the side reinforcement 2420 in the vehicle width direction at least partially overlap. In this way, when the vehicle is hit from both sides, the rocker reinforcement beam, the intermediate connecting piece 2430, and the side reinforcement 2420 can better transmit and disperse the impact force from the side.

[0392] As shown in the figure, in the embodiment of the present disclosure, the side wall reinforcement 2420 can extend out of the rocker reinforcement beam accommodating space 2101 to be connected with the C-pillar reinforcement plate 2410 of the vehicle. In this way, the pressure from the roof can be transmitted downward to the side wall reinforcement 2420 through the C-pillar reinforcement plate, and then dispersed through other components connected with the side wall reinforcement 2420. In addition, when the rear of the vehicle is impacted by a force, the side wall reinforcement 2420 can transmit part of the force upward through the C-pillar reinforcement plate 2410 to disperse the impact from the rear. In addition, when the side wall reinforcement 2420 is impacted by a force from the left and right sides of the vehicle, the impact force can also be transmitted to the C-pillar reinforcement plate, and then dispersed to the vehicle passenger compartment frame 2000 through the C-pillar, thereby improving the performance of the vehicle in terms of collision safety, torsional stiffness, etc.

[0393] As shown in the figure, in the embodiment of the present disclosure, in the vehicle height direction, the C-pillar reinforcement plate 2410 can be on the upper side of the rocker beam, and then the impact force received by the rocker beam and the side wall reinforcement 2420, etc. can be transmitted upward through the C-pillar reinforcement plate.

[0394] As shown in the figure, in the embodiment of the present disclosure, the connecting integrated member can also include a force transmission rib, which can extend in the direction of the rear compartment frame 3000 to the direction of the rocker beam. By providing the force transmission rib, on the one hand, the structure of the connecting integrated member itself can be strengthened, and on the other hand, the impact force from the rear can be better transmitted forward. The present disclosure does not limit the form of the force transmission rib, which can include a main rib, a cross-shaped rib, etc.

[0395] Further, in the embodiment of the present disclosure, the projection of the force transmission rib in the vehicle front-rear direction can at least partially overlap the projection of the rocker beam in the vehicle front-rear direction. In this way, the impact force from the rear can be better transmitted to the rocker beam through the force transmission rib for dispersion.

[0396] As shown in the figure, in the embodiment of the present disclosure, the passenger compartment frame 2000 can also include a seat cross beam, and the projection of the rocker beam in the vehicle height direction can at least partially overlap the projection of the seat cross beam in the vehicle height direction. In this way, the seat cross beam can be physically prevented from being pulled up when subjected to an upward pulling load (the rocker beam acts as a barrier), thereby ensuring the safety of the passenger compartment.

[0397] As shown in the figure, in the embodiment of the present disclosure, the projection of the rocker beam 2100 in the vehicle width direction at least partially overlaps the projection of the seat cross beam in the vehicle width direction. In this way, when the vehicle is impacted from the left and right sides, the rocker beam can transmit part of the impact force to the seat cross beam, and the dispersion of the impact force through the seat cross beam can reduce the damage of the impact force to the passenger compartment, thereby protecting the safety of the passengers.

[0398] As shown in the figure, in the embodiment of the present disclosure, the rocker beam can include a receiving portion 2170 for partially accommodating the seat cross beam. The receiving portion can be formed by the structure of the rocker beam itself, and the present disclosure does not limit the specific shape thereof as long as it can at least partially accommodate the seat cross beam. Specifically, in the illustrated embodiment, the rocker beam can be configured in a stepped shape, specifically can include a first step surface, a second step surface and a third step surface arranged in the height direction in turn, and a connecting surface is formed between the second step surface and the third step surface, and the receiving portion is formed by the third step surface and the connecting surface, wherein the third step surface overlaps the seat cross beam in the height direction, and the connecting surface overlaps the seat cross beam in the width direction.

[0399] As shown in the figure, in the embodiment of the present disclosure, the rocker beam can be provided with a battery pack mounting portion 2180, which can be located on the lower side of the receiving portion 2170 in the vehicle height direction, and on the outer side of the receiving portion in the vehicle width direction. In this way, the seat cross beam and the battery pack are connected, the battery pack is provided with a battery pack longitudinal beam 4500 in the left-right direction, the battery pack longitudinal beam is connected with the rocker beam battery pack mounting portion, and then the seat cross beam and the battery pack longitudinal beam 4500 are connected. Therefore, when the seat cross beam and the battery pack are connected, the seat cross beam is also on the lower side of the battery pack at this time, so the seat cross beam is less likely to move in the vertical direction. In addition, the battery pack longitudinal beam and the rocker beam are spaced apart in the vehicle width direction, the seat cross beam and the rocker beam are spaced apart in the width direction and the height direction, and the seat cross beam and the battery pack can be connected by a cross member to be mentioned below. When a side impact occurs, the force can be first transmitted to the cross member through the rocker beam, and then transmitted to the seat cross beam, the cross member is relatively weak, the seat cross beam, the battery pack and the rocker beam 2100 are spaced apart in the width direction, so there is a certain collapse distance when the force is transmitted, and then the force is transmitted to the seat cross beam to form multiple layers of force transmission in the vertical direction and multiple sections of force transmission in the left-right direction.

[0400] As shown in the figure, in the embodiment of the present disclosure, the rocker beam 2100 can also be provided with a battery pack sealing portion. It needs to be explained that the battery pack sealing portion here refers to the position for attaching a sealing member, which is used for sealing connection with the battery pack, thereby ensuring the sealing of the inside of the battery pack, avoiding rainwater, impurities, etc. from entering the inside of the battery pack through the connection gap between the battery pack and the vehicle body. In the vehicle height direction, the battery pack sealing portion can be located between the receiving portion 2170 and the battery pack mounting portion 2180, and in the vehicle width direction, the battery pack sealing portion is located between the receiving portion and the battery pack mounting portion, for example, in the above-mentioned embodiment in which the rocker beam is configured in a stepped shape, the battery pack sealing portion can be formed on the third step surface. While the battery pack and the rocker beam are sealed, the projection of the battery pack and the rocker beam in the vertical direction can also be overlapped, that is, the extension of the battery pack to the left and right is expanded, which meets the sealing requirement while increasing the capacity.

[0401] As shown in the figure, in the embodiments of the present disclosure, the vehicle can further comprise a transverse fixing member connected between the rocker beam and the seat cross beam. The rocker beam and the seat cross beam can be formed as a whole through the transverse fixing member to facilitate the transmission of the transverse impact force received by the rocker beam to the seat cross beam. The present disclosure does not limit the installation position of the transverse fixing member. For example, in the illustrated embodiment, the transverse fixing member can be located on the upper side of the seat cross beam.

[0402] As shown in the figure, in the embodiments of the present disclosure, the battery pack 4000 of the vehicle can be formed at least partially in the vehicle body floor. In this way, the vehicle body floor can be omitted to reduce the vehicle weight. In addition, the gap between the battery pack and the vehicle body can be reduced, the vehicle center of gravity can be lowered, the maneuverability can be improved, or the passenger compartment height can be increased, or the vehicle ground clearance can be increased to improve the passability of the vehicle.

[0403] As shown in the figure, in the embodiments of the present disclosure, the upper end of the C-pillar rear reinforcement plate 2412 of the vehicle can be connected with the vehicle frame longitudinal beam 2840 of the passenger compartment frame 2000. It should be noted that the vehicle frame longitudinal beam 2840 extends in the front-rear direction of the vehicle and is connected with the A-pillar 2300 and the C-pillar 2400 for force transmission. In this way, the impact force from the rear can be transmitted to the rocker beam and the vehicle frame longitudinal beam 2840 through the C-pillar rear reinforcement plate 2412, thereby increasing the force transmission area and the force transmission path.

[0404] Further, in the embodiments of the present disclosure, the upper end of the C-pillar rear reinforcement plate 2412 can be connected with the rear upper cross beam 3220 of the passenger compartment frame 2000. The rear upper cross beam 3220, the C-pillar rear reinforcement plate 2412, the side wall reinforcement 2420, the connecting integrated member, and the rear cross beam can form a ring structure, which on the one hand facilitates the force transmission of the battery pack, and on the other hand, when the connecting integrated member is connected with the battery pack, the vehicle body stiffness can be effectively improved. In addition, the accommodation space for accommodating the on-board charger is formed at this position, and therefore, when the battery pack is connected here, the ring structure can strengthen the accommodation space, and the battery pack is located at the lowermost side, so that a rizhong type structure can be formed at the rear to further enhance the stiffness.

[0405] As shown in the figure, in the embodiments of the present disclosure, the vehicle can further comprise a C-pillar front reinforcement plate 2411, the upper end of the C-pillar front reinforcement plate 2411 is connected with the frame longitudinal beam, and the lower end is connected with the rocker beam 2100 of the vehicle. In this way, the C-pillar front reinforcement plate 2411, the frame longitudinal beam, the rocker beam, the battery pack 4000, and the vehicle roof can also form a ring structure to enhance the stiffness of the vehicle body. The vehicle roof here refers to the roof portion, the sides of which are connected with the side wall assembly, and the A-pillar 2300 and the C-pillar 2400 are arranged on the side wall assembly.

[0406] In embodiments of the present disclosure, the C-pillar front reinforcement plate 2411 can be arranged at the front side of the C-pillar rear reinforcement plate 2412.

[0407] As shown in the figure, in embodiments of the present disclosure, the C-pillar rear reinforcement plate 2412 can be provided with a C-pillar front reinforcement plate 2411 connecting portion, and the C-pillar rear reinforcement plate 2412 can be connected with the C-pillar front reinforcement plate 2411 through the C-pillar front reinforcement plate 2411 connecting portion and the C-pillar front reinforcement plate 2411, so that the C-pillar front reinforcement plate 2411 and the C-pillar rear reinforcement plate 2412 can transmit force in the front-rear direction. At the same time, the C-pillar front reinforcement plate 2411 connecting portion and the rocker beam are arranged in height direction, so as to form a three-layer force transmission path of the car body side frame longitudinal beam 2840, the C-pillar front reinforcement plate 2411 connecting portion and the rocker beam in the vertical direction, so as to achieve better force transmission effect.

[0408] II. Battery pack mounting member

[0409] The battery pack mounting member can be connected to at least one end of the rocker beam 2100 in the front-rear direction, and the battery pack mounting member is formed with a battery pack mounting surface and is an integral member. In this way, the integral member is connected with the battery pack, which can better improve the strength of the mounting point of the battery pack, and through the combination of the integral member and the battery pack, the body stiffness can be effectively improved. In addition, when transmitting force in the front-rear direction, the force can be effectively transmitted to the rocker beam, and since it is an integral member, the front-rear direction transmission capability can be effectively improved under the support of the battery pack and the rocker beam, and the integral member itself has good stiffness, so the force transmission and stiffness improvement effect is better. Similar to the above-mentioned connecting integrated member, the integral member here refers to a single component, which can be a one-piece member or a member formed by connecting multiple components. It should be noted that the battery pack mounting bracket can be connected to the front end of the rocker beam, or can be connected to the rear end of the rocker beam. For the convenience of description, the following will be described by taking the example of being connected to the front end of the rocker beam.

[0410] In embodiments of the present disclosure, the battery pack mounting member can be a one-piece structure. In this way, the stiffness of the battery pack mounting member itself can be improved, and the effect of connecting the battery pack mounting member with the vehicle body and the battery pack can be improved, and the torsional performance and overall performance of the vehicle can be effectively improved.

[0411] As shown in the figure, in an embodiment of the present disclosure, the battery pack mounting member can be connected to the front end portion of the sill beam 2100 in the front-rear direction. With such a design, the force transmission effect during a frontal collision of the vehicle can be improved, and the stiffness of the front compartment part can be enhanced. Specifically, when the front compartment of the vehicle is impacted, it can transmit the impact force towards the sill beam and the battery pack through the battery pack mounting member, reducing the injury to the occupant compartment. In some embodiments, in order to further improve the force transmission effect between the battery pack mounting member and the sill beam, the projection of the battery pack mounting member in the vehicle's front-rear direction and the projection of the sill beam in the vehicle's front-rear direction can at least partially overlap.

[0412] As shown in the figure, in an embodiment of the present disclosure, the vehicle may further include a front longitudinal beam 1100. In the front-rear direction of the vehicle, the battery pack mounting member can be disposed behind the front longitudinal beam, and the front longitudinal beam is connected to the battery pack mounting member. With such a design, when the front longitudinal beam is impacted, it can transmit the impact force towards the sill beam and the battery pack through the battery pack mounting bracket, reducing the injury to the occupant compartment. In some embodiments, in order to improve the force transmission effect between the battery pack mounting member and the front longitudinal beam, the projection of the front longitudinal beam in the vehicle's front-rear direction and the projection of the battery pack mounting member in the vehicle's front-rear direction can at least partially overlap.

[0413] The present disclosure does not limit how the front longitudinal beam 1100 is connected to the battery pack mounting member. For example, in the illustrated embodiment, a protruding beam aligned with the front longitudinal beam may be formed at the front end of the battery pack mounting member, and the rear end of the front longitudinal beam may be configured to be hollow to sleeve around the outer periphery of the protruding beam and may be fixed by bolts or the like.

[0414] In order to enhance the connection strength of the connection position between the front longitudinal beam 1100 and the battery pack mounting member and prevent the front longitudinal beam from intruding into the occupant compartment under force, as shown in the figure, in an embodiment of the present disclosure, the front end of the battery pack mounting member may have a stop surface 5102 surrounding the protruding beam, and the stop surface is located at the end of the protruding beam away from the front longitudinal beam.

[0415] As shown in the figure, in some other embodiments, the cross-section of the protruding beam may be configured as a "day" shape, and a second reinforcing rib 1101 corresponding to the second intermediate rib 5101 of the protruding beam may be provided on the part of the front longitudinal beam 1100 located at the front end of the protruding beam.

[0416] After the front longitudinal beam 1100, the battery pack mounting member 5000, and the sill beam 2100 are sequentially connected, a force transmission path from the front of the vehicle to the rear of the vehicle can be formed among the three, thereby improving the smoothness of the force transmission of the entire vehicle body. In addition, after connecting the aforementioned connection integration member to the rear end of the sill beam, the stiffness of the connection integration member can be better and the process can be simpler.

[0417] In the embodiments of the present disclosure, at least one of the front longitudinal beam 1100 and the rocker beam can be detachably connected with the battery pack mounting member 5000. In this way, the battery pack mounting member is designed as an independent piece, which can facilitate the optimization design of the battery pack mounting member to improve its strength and rigidity, and the detachable design can simplify the processing and connection process of the vehicle body, and facilitate disassembly and assembly.

[0418] Further, in the embodiments of the present disclosure, the front longitudinal beam is detachably connected with the battery pack mounting member. As described above, in this way, the assembly process at this position can be more convenient and simple, and the operation is facilitated. It should be noted that the battery pack mounting member and the passenger cabin frame 2000 can be connected by bonding. Most of the battery pack mounting member is made of metal material, and the part connected with the passenger cabin can be made of carbon fiber material to facilitate bonding.

[0419] As shown in the drawings, in the embodiments of the present disclosure, the vehicle can further include an A-pillar, and the battery pack mounting member can be connected with the A-pillar. The present disclosure does not limit the connection between the battery pack mounting member and the A-pillar, which is preferably directly connected, or can also be indirectly connected. In this way, on the one hand, the force transmission path of the vehicle in the front-rear direction and the width direction is more, which is transmitted through the rocker beam, the battery pack, etc., and can also be transmitted through the A-pillar. In addition, the battery pack, the A-pillar, the rocker beam, and the battery pack mounting member can be integrated together. In particular, when the battery pack mounting member is directly connected with the rocker beam, the front longitudinal beam 1100, the A-pillar, and the battery pack respectively, and itself is an integral piece, the force transmission between each piece can be better, and the strength of the connection points between the battery pack mounting member and each component is also strong, so the integrity is better, and the stiffness of the vehicle body is better. In addition, since the battery pack is a relatively large component, it is distributed under the vehicle body, and these components are on both sides of the front of the vehicle. By using this connection form, the entire battery pack can be used to strengthen the stiffness of this part of the structure, so that the front side can be connected as a whole to improve its stiffness, inhibit the deformation of the vehicle during driving, and improve the driving experience. Moreover, when a collision occurs, since these components are connected together, the overturning moment of the front longitudinal beam in the vertical direction during the collision process can be effectively inhibited, the passenger cabin can be prevented from being damaged, and the battery pack can also be prevented from being damaged after the components are overturned.

[0420] As shown in the drawings, in the embodiments of the present disclosure, the projection of the battery pack mounting member 5000 in the vehicle width direction at least partially overlaps with the projection of the A-pillar in the vehicle width direction. In this way, the force transmission effect in the width direction of the two is more favorable.

[0421] As shown in the drawings, in embodiments of the present disclosure, the vehicle can further include a front panel 1200, and the battery pack mounting member is connected with the front panel 1200, the A-pillar, and the rocker beam 2100. Since the battery pack mounting member, the battery pack, and the rocker beam form a hollow annular structure in the vertical direction with the A-pillar, the front panel can be supplemented in the hollow part to further improve the rigidity of the structure.

[0422] Further, in some embodiments, the battery pack mounting member is preferably directly connected with the front panel 1200, and the front panel can be an integrally formed member. In this way, since the integrally formed member itself has high rigidity, the combination with other components is better.

[0423] In order to make the force transmission effect of the battery pack mounting member in the front-rear direction better and more smooth, and reduce the overturning moment in the vertical direction, as shown in the drawings, in embodiments of the present disclosure, the first end of the battery pack mounting member can be connected with the front longitudinal beam 1100 of the vehicle, and the second end of the battery pack mounting member can be connected with the rocker beam. It should be noted that the second end of the battery pack mounting member can also be connected with the battery pack.

[0424] As shown in the drawings, in embodiments of the present disclosure, the cross-sectional area of the side of the battery pack mounting member close to the rocker beam can be greater than the cross-sectional area of the side of the battery pack mounting member close to the front longitudinal beam 1100. In this way, when the impact force on the front side of the vehicle diffuses backward, the battery pack mounting member can increase the force transmission area to prevent the pressure from being too large due to the small force transmission area, thereby damaging the passenger compartment.

[0425] As shown in the drawings, in embodiments of the present disclosure, the vehicle can further include a battery pack, and the battery pack can be directly connected with at least one of the battery pack mounting member and the rocker beam 2100. Direct connection can improve the connection strength of the connection point and improve the effect after the combination of the battery pack with the battery pack mounting member and the rocker beam. In some embodiments, the battery pack can be directly connected with the battery pack mounting member and the rocker beam.

[0426] As shown in the drawings, in embodiments of the present disclosure, the vehicle can further include a battery pack, and the projection of the corner of the battery pack in the vehicle height direction can be located within the projection of the battery pack mounting member in the vehicle height direction. It should be explained that the corner here refers to the connection part of the front cross beam of the battery pack and the longitudinal beam of the battery pack, and the front cross beam and the longitudinal beam of the battery pack refer to the frame cross beam and the frame longitudinal beam, and the battery pack is connected with the vehicle through the frame cross beam and the frame longitudinal beam. In this way, the corner position can be protected by the battery pack mounting member.

[0427] As shown in the figure, in the embodiments of the present disclosure, the battery pack can be provided with a battery pack mounting point, and the battery pack can be connected with the battery pack mounting member through the battery pack mounting point, wherein the minimum distance from the battery pack mounting point to the corner is less than a preset distance. Since the mounting points of the battery pack are generally arranged on the frame of the battery pack, that is, the left and right side frames, increasing the connection with the battery pack near the corner can make the connection between the battery pack and the vehicle body more rigid.

[0428] For example, the preset distance can be 1 / 4 of the distance from the corner to the adjacent corner in the vehicle width direction.

[0429] For example, the preset distance is 1 / 4 of the maximum distance from the left edge of the battery pack to the right edge.

[0430] As shown in the figure, in the embodiments of the present disclosure, two battery pack mounting members 5000 can be arranged in the vehicle width direction, and the vehicle can further include a front lower cross beam 1210, both ends of the front lower cross beam being connected with the two battery pack mounting members respectively. Both ends of the front lower cross beam can be directly connected with the battery pack mounting members and indirectly connected with the rocker beam through the battery pack mounting members. The battery pack connecting member is connected with the front longitudinal beam 1100 and the A-pillar, the front side of the vehicle is mainly connected with the two battery pack mounting members and the front lower cross beam, the force transmission components are few, and the battery pack mounting member is an integral molding member, so that the front side force transmission components are relatively few, and the connection points are also relatively few, which can reduce the risk of fracture of the force transmission connection points. In addition, the two battery pack mounting members are connected with the A-pillar, and the front lower cross beam is directly connected with the battery pack mounting member, so that the force can be transmitted to the A-pillar through the battery pack mounting member, preventing the deformation of the components in the front compartment from invading the passenger compartment. In addition, in other embodiments, the front lower cross beam can also be an integral molding structure, so as to further reduce the connection points of the front side force transmission components.

[0431] As shown in the figure, in some embodiments, the front lower cross beam 1210 can be connected with the battery pack of the vehicle. In this way, the battery pack is connected with the front lower cross beam and the two battery pack mounting members respectively, and since the three members are connected with the A-pillar to transmit force, when the battery pack and the front lower cross beam and the battery pack mounting member are connected at the same time, the front compartment connection can be integrated as a whole, thereby improving the rigidity of the battery pack and the rigidity of the vehicle body.

[0432] In some embodiments, the front lower cross beam 1210 can be directly connected with the battery pack, so as to further reduce the connection points of the front side force transmission components and improve the connection strength. In addition, in other embodiments, the front lower cross beam can also be indirectly connected with the battery pack, and the present disclosure does not limit this.

[0433] As shown in the drawings, in the embodiments of the present disclosure, the bottom surface of the front lower cross beam 1210 can be provided with a cross beam mounting surface 1212, and the battery pack mounting member 5000 can be provided with a battery pack mounting member mounting surface, and the cross beam mounting surface 1212 and the battery pack mounting member mounting surface can be formed into a battery pack mounting surface. In this way, the connection area of the battery pack and the vehicle body can be improved, and the connection strength and the force transmission effect can be improved.

[0434] Further, the cross beam mounting surface 1212 and the battery pack mounting member mounting surface can be located on the same horizontal plane. In this way, on the one hand, the force transmission effect can be smoother, and on the other hand, when the battery pack is connected, it will not damage the battery pack.

[0435] As shown in the drawings, in the embodiments of the present disclosure, the projection of at least one of the front lower cross beam 1210 and the battery pack mounting member in the vehicle height direction at least partially overlaps the projection of the battery pack in the vehicle height direction. Preferably, the projection of at least one of the front lower cross beam and the battery pack mounting member in the vehicle height direction at least partially overlaps the projection of the battery cell of the battery pack in the vehicle height direction. In this way, the battery pack can expand more area to the front to improve the capacity of the battery pack.

[0436] As shown in the drawings, in the embodiments of the present disclosure, at least part of the bottom surface of the rocker beam 2100 can be formed into a battery pack mounting surface. In this way, the connection area of the battery pack and the vehicle body can be increased, and the connection stability can be improved. In addition, it can also allow the battery pack to expand to the left and right directions, and improve the capacity of the battery pack.

[0437] As shown in the drawings, in the embodiments of the present disclosure, the projection of the rocker beam in the vehicle height direction at least partially overlaps the projection of the battery cell of the battery pack of the vehicle in the vehicle height direction. On the one hand, it can allow the battery pack to expand more area to both sides to improve the capacity of the battery pack. In addition, by increasing the overlapping area of the rocker beam, the battery pack can be better integrated with the vehicle body in the front-rear direction of the vehicle, the stiffness of the vehicle body can be improved, and a very large force receiving surface can be formed by connecting the battery pack and the rocker beam, and when the front side component is connected, the overturning moment in the vertical direction of the front side component under force can be suppressed.

[0438] As shown in the drawings, in the embodiments of the present disclosure, the cross beam mounting surface 1212, the battery pack mounting member mounting surface, and at least part of the bottom surface of the rocker beam can be formed into a battery pack mounting surface. In this way, the area of the battery pack can be expanded from the front side and the left and right sides, and the capacity of the battery pack can be increased.

[0439] As shown in the drawings, preferably, the cross beam mounting surface 1212, the battery pack mounting member mounting surface, and at least part of the bottom surface of the rocker beam are located on the same horizontal plane. In this way, on the one hand, the force transmission effect can be smoother, and on the other hand, when the battery pack is connected, it will not damage the battery pack.

[0440] In embodiments of the present disclosure, the battery pack mounting member can be sealingly connected with the lower front cross beam 1210. Such a design can achieve front sealing to achieve multiple sealing of the passenger compartment together with the front panel 1200.

[0441] As shown in the figure, in some embodiments, the battery pack mounting member can be provided with a lower front cross beam connecting portion 5000a2 / 5000b2 / 5000c2 / 5000d2, and the lower front cross beam 1210 can be provided with a second connecting member connecting portion 1210a / 1210b / 1210c / 1210d, and the lower front cross beam connecting portion is connected with the second connecting member connecting portion 1210a / 1210b / 1210c / 1210d. Among them, in order to facilitate sealing, in the vehicle height direction, the second connecting member connecting portion 1210a / 1210b / 1210c / 1210d can be located on the upper side of the lower front cross beam connecting portion. Specifically, as shown in the figure, the battery pack mounting member can be provided with a lower front cross beam first connecting portion 11a2, a lower front cross beam second connecting portion 11b2, a lower front cross beam third connecting portion 11c2 and a lower front cross beam fourth connecting portion 11d2, wherein the first surface 15a of the lower front cross beam is connected with the lower front cross beam first connecting portion, the second surface 15b of the lower front cross beam is connected with the lower front cross beam second connecting portion 11b2, the third surface 15c of the lower front cross beam is connected with the lower front cross beam third connecting portion 11c2, and the fourth surface 15d of the lower front cross beam is connected with the lower front cross beam fourth connecting portion 11d2 to form the two Z-shaped lap joint relationship shown to improve the connection strength.

[0442] As shown in the figure, in embodiments of the present disclosure, the lower front cross beam 1210 can be connected to the rear side of the battery pack mounting member. It needs to be explained that the rear side here does not mean that the lower front cross beam is completely located on the rear side of the whole battery pack mounting member, as long as the connecting point of the lower front cross beam with the battery pack mounting member is located on the rear side of the front end stress surface of the battery pack mounting member. Such a design, since the battery pack mounting member is relatively forward, the forward impact force will first be transmitted to the relatively large and firm battery pack mounting member, and then transmitted to the lower front cross beam to be dispersed to both sides, and the force transmission effect is better.

[0443] As shown in the figure, in embodiments of the present disclosure, the vehicle can further include a first cross beam connected between the two battery pack mounting members. The first cross beam can increase the force transmission path of the vehicle in the width direction.

[0444] Preferably, in some embodiments, the length of the first cross beam can be shorter than that of the lower dash cross beam 1210. In this way, since the lower dash cross beam is located at the lower side of the first cross beam and is used to mount the battery pack, and can transmit force to the battery pack mount, when the lower dash cross beam is longer, the force receiving area can be increased, and the connection position of the lower dash cross beam and the battery pack mount can be closer to the connection position of the A-pillar and the battery pack mount, thereby reducing the torque between the two mounting positions.

[0445] Preferably, in some embodiments, the first cross beam can be sealingly connected with the battery pack mount, so as to achieve front sealing, and together with the dash panel 1200, to achieve multiple sealing of the passenger compartment.

[0446] As shown in the figure, in the embodiments of the present disclosure, in the vehicle height direction, the first cross beam can be located at the upper side of the lower dash cross beam 1210. In this way, when the vehicle front compartment is subjected to a front force, the front longitudinal beam 1100 and the front subframe assembly 1300 are located at two different heights, wherein the front longitudinal beam is higher (higher than the front floor surface), the first cross beam is the same height as the front longitudinal beam, and can transmit the upper layer load, and the lower dash cross beam can be said to be the same height as the front floor surface, that is, the same height as the front subframe assembly 1300 to transmit the lower layer load.

[0447] As shown in the figure, in the embodiments of the present disclosure, in the front-rear direction of the vehicle, the first cross beam can be located at the front side of the lower dash cross beam 1210. In this way, when the vehicle is subjected to a front side impact, the first cross beam is first subjected to force and transmits the force to the A-pillar through the two side battery pack mounts, and then the lower dash cross beam is subjected to force and transmits the force to the battery pack. To some extent, the front side first cross beam can protect the battery pack. In addition, the first cross beam, the lower dash cross beam, and the two battery pack mounts can form a mouth-shaped structure, which can improve the force transmission performance of this position, so as to improve the crash resistance, torsion resistance and other performances of the vehicle.

[0448] Similar to the front lower cross beam 1210, as shown in the figure, in the embodiments of the present disclosure, the battery pack mount can be provided with a first cross beam connecting portion (11a1 / 11b1 / 11c1 / 11d1), the first cross beam can be provided with a first connecting portion connecting portion (1220a / 1220b / 1220c / 1220d) (14d / 14c / 14a / 14b), and the first cross beam connecting portion is connected with the first connecting portion connecting portion (1220a / 1220b / 1220c / 1220d). Among them, in order to facilitate sealing connection, in the vehicle height direction, the first connecting portion connecting portion (1220a / 1220b / 1220c / 1220d) can be located on the upper side of the first cross beam connecting portion. Specifically, as shown in the figure, the first cross beam first connecting portion 11a1, the first cross beam second connecting portion 11b1, the first cross beam third connecting portion 11c1 and the first cross beam fourth connecting portion 11d1 can be arranged on the battery pack mount, wherein the first surface 14a of the first cross beam is connected with the first cross beam first connecting portion 11a1, the second surface 14b of the first cross beam is connected with the first cross beam second connecting portion 11b1, the third surface 14c of the first cross beam is connected with the first cross beam third connecting portion 11c1, and the fourth surface 14d of the first cross beam is connected with the first cross beam fourth connecting portion 11d1, so as to form the Z-shaped lap joint relationship shown in the figure, thereby improving the connection strength.

[0449] Similar to the above-mentioned front lower cross beam 1210, as shown in the figure, in the embodiments of the present disclosure, the first cross beam can be connected to the rear side of the battery pack mount. Similar to the above, the rear side here does not mean that the first cross beam is completely located on the rear side of the whole battery pack mount, as long as the connecting point of the first cross beam with the battery pack mount is located on the rear side of the front end stress surface of the battery pack mount. In this way, since the battery pack mount is relatively forward, the forward impact force will first be transmitted to the relatively large and firm battery pack mount, and then transmitted to the first cross beam to be dispersed to both sides, so that the force transmission effect is better.

[0450] As shown in the figure, in the embodiments of the present disclosure, the vehicle can further include a central channel 2700, and the central channel 2700 can be connected with the first cross beam to form a force transmission path from the first cross beam to the central channel 2700 in the vehicle length direction.

[0451] In order to make the force transmission effect of the first cross beam and the central channel 2700 better, as shown in the figure, in the embodiments of the present disclosure, the projection of the first cross beam in the vehicle front-rear direction at least partially overlaps with the projection of the central channel 2700 in the vehicle front-rear direction.

[0452] Further, as shown in the figures, in embodiments of the present disclosure, the first cross beam can be configured in a "day" shape in cross section, and the third middle rib of the first cross beam can be flush with the upper surface of the central tunnel 2700. The day shape structure can improve the strength of the first cross beam, and the third middle rib of the first cross beam being flush with the upper surface of the central tunnel 2700 can facilitate the transmission of force in the front-rear direction.

[0453] As shown in the figures, in embodiments of the present disclosure, the cross section of the lower front wall cross beam 1210 can be configured in a right triangle, and the inclined surface of the lower front wall cross beam faces upward and rearward. The triangular structure occupies less space to form a space upward and rearward for arranging other components.

[0454] As shown in the figures, in embodiments of the present disclosure, the central tunnel 2700 can be connected with the lower front wall cross beam 1210. This can form a force transmission path between the lower front wall cross beam and the central tunnel 2700.

[0455] The present disclosure does not limit the connection manner of the central tunnel 2700 with the first cross beam and the lower front wall cross beam. For example, in embodiments of the present disclosure, the front wall 1200 can be fixedly connected with the first cross beam and the lower front wall cross beam, and is located on the upper side of the first cross beam and the lower front wall cross beam, and the central tunnel 2700 is fixedly connected with the front wall to indirectly connect with the first cross beam and the lower front wall cross beam.

[0456] In order to make the lower front wall cross beam 1210 and the central tunnel 2700 have better force transmission effect in the front-rear direction, as shown in the figures, in embodiments of the present disclosure, the projection of the lower front wall cross beam in the front-rear direction of the vehicle and the projection of the central tunnel 2700 in the front-rear direction of the vehicle can at least partially overlap.

[0457] As shown in the figures, in embodiments of the present disclosure, the vehicle can further include a front wall 1200, a rear floor cross beam, a front seat cross beam 2630, and a rear seat cross beam 2620, wherein the front wall can be connected above the first cross beam and the lower front wall cross beam, and the central tunnel 2700 can be connected with the front wall, the rear floor cross beam, the front seat cross beam 2630, and the rear seat cross beam 2620, respectively.

[0458] As shown in the figures, in embodiments of the present disclosure, the battery pack mounting member can be formed with a front subframe mounting point adapted to be connected with a front subframe assembly 1300 of the vehicle. By connecting the front subframe assembly 1300 with the battery pack mounting member, another body force transmission path can be added. Specifically, when the front longitudinal beam 1100 of the vehicle is impacted, the impact force can be at least partially transmitted to the front subframe assembly 1300 through the battery pack mounting member to be dispersed, thereby protecting the passenger compartment.

[0459] In embodiments of the present disclosure, the front subframe mounting point can be arranged on the side of the battery pack mounting point away from the rocker beam, so that the force of the front subframe assembly 1300 can be transmitted to the battery pack, preventing the front subframe assembly 1300 from intruding into the passenger compartment.

[0460] Preferably, in embodiments of the present disclosure, the front subframe mounting point can be located in front of the front floor cross beam 1210, so that the front floor cross beam can limit the rearward displacement of the front subframe, preventing it from moving backward and intruding into the passenger compartment. The distance between the front subframe mounting point and the front floor cross beam in the length direction can be 100-150 mm.

[0461] As shown in the drawings, in embodiments of the present disclosure, the battery pack mounting member can include a first mounting portion, which can be directly connected to the A-pillar of the vehicle, and at least part of the first mounting portion is located on the front side of the A-pillar. It needs to be explained here that the position close to the lower side of the A-pillar coincides with part of the rocker beam, i.e., this "part" belongs to both the A-pillar and the rocker beam. Therefore, the connection of the first mounting portion with the A-pillar is actually also the connection with the rocker beam. In this way, the rocker beam, the A-pillar, and the battery pack mounting member can be formed as a whole, providing multiple force transmission paths to protect the passenger compartment.

[0462] Further, as shown in the drawings, in embodiments of the present disclosure, the battery pack mounting member can further include a second mounting portion connected to the side of the A-pillar facing the passenger compartment of the vehicle. Through the first mounting portion and the second mounting portion, the battery pack mounting member can be connected to the A-pillar in two directions, which can improve the connection strength of the two, and also increase the force transmission paths in the front-rear direction and the left-right direction.

[0463] As shown in the drawings, in embodiments of the present disclosure, the second mounting portion can be connected to the rocker beam to increase the force transmission path between the battery pack mounting member and the rocker beam.

[0464] The present disclosure does not limit the specific structure of the rocker beam 2100, for example, in the illustrated embodiment, the rocker beam can include a body beam and a reinforcing beam located inside the body beam, it needs to be explained that "inside" here refers to inside and outside in the vehicle width direction. In this case, the second mounting portion can be connected to the rocker reinforcing beam 2130 and located on the side of the rocker reinforcing beam facing the passenger compartment. By providing the rocker reinforcing beam, the strength and force transmission effect of the vehicle rocker beam can be improved.

[0465] As shown in the figure, in the embodiment of the present disclosure, the rocker beam can further include a rocker inner panel 2110 and a rocker outer panel 2120, the rocker inner panel 2110 and the rocker outer panel 2120 enclosing the body beam 2100a, and a first inlay 2201 between the rocker inner panel 2110 and the rocker outer panel 2120. The second mounting portion is sequentially connected with the rocker inner panel 2110, the first inlay 2201 and the reinforcing beam, and the battery pack mounting member is fixedly connected with the reinforcing beam through a bolt penetrating through the first inlay 2201 and the side wall assembly. It should be explained that the side wall assembly here includes a side wall outer panel 2210, a side wall inner panel 2220, the rocker inner panel 2110 and the rocker outer panel 2120, wherein the rocker inner panel 2110 and the side wall inner panel are integrally formed, and the rocker outer panel 2120 and the side wall outer panel are integrally formed, and the side wall outer panel and the side wall inner panel can enclose the A-pillar 2300.

[0466] The present disclosure does not limit the first inlay, for example, in the illustrated embodiment, the second inlay can be a cavity reinforcing foam or plastic, or other cavity filling lightweight material. The first inlay is an aluminum profile embedded in the second inlay 2202, which provides mounting threads or vias for the reinforcing beam and the battery pack mounting member.

[0467] As shown in the figure, in the embodiment of the present disclosure, the second inlay 2202 can be embedded with a third inlay 2203 and a fourth inlay 2204, and the third inlay and the fourth inlay are located in the A-pillar. The battery pack mounting member is connected with the third inlay in the width direction and connected with the fourth inlay in the length direction, that is, the third inlay and the fourth inlay are connected with the A-pillar in the width direction and the length direction.

[0468] As shown in the figure, in the embodiment of the present disclosure, the projection of the reinforcing beam in the vehicle width direction at least partially overlaps the projection of the second mounting portion in the vehicle width direction, so that the two can better transmit force in the vehicle width direction.

[0469] As shown in the figure, in the embodiment of the present disclosure, the rocker inner panel 2110 can be configured as a bent plate and has a flat surface flush with the bottom surface of the battery pack mounting member, so as to provide a mounting position for the sealing plate of the battery pack.

[0470] The position of the battery pack mounting member for lap joint with the side wall inner panel can be configured as an L-shaped, so as to be lap jointed with the rocker inner panel 2110 in the width direction and the length direction, respectively.

[0471] As shown in the figure, in the embodiment of the present disclosure, the bottom surface of the second mounting portion and the mounting surface of the rocker beam 2100 can be located on the same horizontal plane. In this way, the sealing can be more convenient, and the intrusion of foreign matter into the passenger compartment can be prevented.

[0472] As shown in the figures, in the embodiments of the present disclosure, the battery pack of the vehicle can be sealingly connected with the beam mounting surface 1212, the battery pack mounting member mounting surface, and at least part of the bottom surface of the rocker beam. In this way, impurities, moisture, and the like can be prevented from entering the passenger compartment through the connecting gap.

[0473] The present disclosure does not limit how the battery pack is sealingly connected with the beam mounting surface 1212, the battery pack mounting member mounting surface, and at least part of the bottom surface of the rocker beam. For example, in the embodiments shown in the figures, the vehicle can also include a seal 4100, and the battery pack can be sealingly connected with the beam mounting surface 1212, the battery pack mounting member mounting surface, and at least part of the bottom surface of the rocker beam through the seal. The seal can be a sealing plate, a sealing gasket, or the like.

[0474] Preferably, the beam mounting surface 1212, the battery pack mounting member mounting surface, and at least part of the bottom surface of the rocker beam are flush in the height direction to provide a mounting position for the seal of the battery pack.

[0475] The present disclosure does not limit the structure of the inner side wall panel, and the structure thereof will be introduced below with reference to the embodiments shown in the figures. Specifically, the inner side wall panel can be configured to have a first step surface, a second step surface, a third step surface, and a connecting surface connected between the second step surface and the third step surface, which are staggered in sequence from bottom to top. The vehicle can also include a front seat cross beam 2630 and a rear seat cross beam 2620, wherein the battery pack can be mounted on the first step surface, the sealing plate can be connected to the second step surface, and a space for avoiding the front seat cross beam 2630 and the rear seat cross beam 2620 can be formed between the third step surface and the connecting surface.

[0476] As shown in the figures, in the embodiments of the present disclosure, the outer surface of the inner side wall panel can be provided with an inner rocker structure 2150, the outer surface of the inner rocker structure can be provided with a first reinforcing profile 2151 at a position corresponding to the front seat cross beam 2630 and a second reinforcing profile 2152 at a position corresponding to the rear seat cross beam 2620, and the outer surfaces of the first reinforcing profile and the second reinforcing profile respectively abut against the rocker reinforcing beam 2130. The inner rocker structure can be connected with the upper surfaces of the front seat cross beam 2630 and the rear seat cross beam 2620 through a transverse fixing member. By providing the inner rocker structure, the first reinforcing profile, and the second reinforcing profile, the strength of the rocker beam itself and the connection strength with the front seat cross beam 2630 and the rear seat cross beam 2620 can be effectively improved.

[0477] In the embodiments of the present disclosure, the middle part of the front seat cross beam 2630 can be bonded with the battery pack, and the two ends of the front seat cross beam 2630 can be respectively screwed with the battery pack. The middle part of the rear seat cross beam 2620 can be bonded with the battery pack, and the two ends of the rear seat cross beam 2620 can be respectively connected with the battery pack.

[0478] In order to improve the sealing performance of the connection between the battery pack and the vehicle body, as shown in the figure, in the embodiment of the present disclosure, the distance between the mounting point of the battery pack and the first step surface and the sealing plate in the width direction is 20-30 mm, and the battery pack can be compressed and fitted with the sealing plate through the battery pack sealing foam 4200. Designing a smaller width distance can make the corresponding position of the battery pack and the sealing plate more tightly compressed to achieve sealing when the battery pack is fixed to the first step surface.

[0479] As shown in the figure, in the embodiment of the present disclosure, the battery pack mounting member can be provided with a third reinforcing rib extending in the direction from the front longitudinal beam 1100 of the vehicle to the A-pillar. In this way, on the one hand, the strength of the battery pack mounting member itself can be improved by the third reinforcing rib, and on the other hand, the battery pack mounting member can better transmit force in the front-rear direction of the vehicle.

[0480] As shown in the figure, in the embodiment of the present disclosure, a mounting groove can be formed on the battery pack mounting member, and a mounting hole for the steering column to pass through can be formed on the groove bottom of the mounting groove. During assembly, other components are pasted with sealing foam and the like extending into the mounting groove, and the sealing foam is extruded and sealed with the groove bottom surface. The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0481] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0482] In addition, various different embodiments of the present disclosure can also be combined in any appropriate manner, as long as they do not deviate from the idea of the present disclosure, they should also be considered as disclosed by the present disclosure.

Claims

1. A vehicle characterized by comprising: The vehicle comprises: a rear compartment frame; a passenger compartment frame; and a connecting integrated piece arranged between the rear compartment frame and the passenger compartment frame in a front-rear direction of the vehicle and connected to the rear compartment frame and the passenger compartment frame respectively, wherein the connecting integrated piece is an integral piece, the passenger compartment frame comprises a rocker beam, the connecting integrated piece is connected to a rear end of the rocker beam, the rocker beam has a first connecting surface and a second connecting surface intersecting with each other, and the first connecting surface and the second connecting surface are both connected to the connecting integrated piece, the vehicle further comprises an intermediate connecting piece, the second connecting surface is an inner side surface of the rocker beam, and the connecting integrated piece is connected to the second connecting surface through the intermediate connecting piece. The connecting integrated piece is integrally formed.

2. The vehicle of claim 1, wherein The connecting integrated piece is formed with a first mounting surface configured as at least a part of a battery pack mounting surface.

3. The vehicle of claim 1, wherein The passenger compartment frame comprises a rocker beam, and at least a part of a bottom surface of the rocker beam is configured as at least a part of a battery pack mounting surface.

4. The vehicle of claim 3, wherein The first mounting surface is flush with at least a part of the bottom surface of the rocker beam in a horizontal plane.

5. The vehicle of claim 4, wherein At least a part of the first mounting surface is located on an inner side of the rocker beam in a vehicle width direction.

6. The vehicle of claim 4, wherein The passenger compartment frame further comprises a first connecting plate connected to the rocker beam.

7. The vehicle of claim 4, wherein The vehicle further comprises a battery pack, and the battery pack and the first connecting plate are arranged to form an accommodation space in a vehicle height direction.

8. The vehicle of claim 7, wherein, The accommodation space is adapted to accommodate an on-board charger.

9. The vehicle of claim 8, wherein, The passenger compartment frame further comprises a second connecting plate connected to at least one of the first connecting plate, the rocker beam, and the battery pack, and the battery pack, the first connecting plate, the second connecting plate, and the rocker beam form the accommodation space.

10. The vehicle of claim 8, wherein, The first connecting plate and the second connecting plate are integrally formed.

11. The vehicle of claim 10, wherein, An access hole is arranged on the first connecting plate.

12. The vehicle of claim 11, wherein, The battery pack, the first connecting plate, the second connecting plate, the rocker beam, and the connecting integrated piece form the accommodation space.

13. The vehicle of claim 10, wherein, Two connecting integrated pieces are arranged to be spaced apart in a vehicle width direction, and the vehicle further comprises a rear wall cross beam, both ends of the rear wall cross beam being connected to the two connecting integrated pieces respectively.

14. The vehicle of claim 1, wherein, The connecting integrated piece further comprises a connecting portion, one end of the connecting portion being connected to the rear wall cross beam, and the other end of the connecting portion being formed as a rear longitudinal beam connecting portion for connecting a rear longitudinal beam.

15. The vehicle of claim 14, wherein, A projection of the rear wall cross beam in a front-rear direction of the vehicle at least partially overlaps a projection of the rear longitudinal beam connecting portion in the front-rear direction of the vehicle.

16. The vehicle of claim 15, wherein, A projection of the rear wall cross beam in a left-right direction of the vehicle at least partially overlaps a projection of the rear longitudinal beam connecting portion in the left-right direction of the vehicle.

17. The vehicle of claim 15, wherein, A projection of the rear longitudinal beam in the front-rear direction of the vehicle at least partially overlaps a projection of the rear wall cross beam in the front-rear direction of the vehicle.

18. The vehicle of claim 15, wherein, The passenger compartment frame further comprises a first connecting plate, the battery pack of the vehicle and the first connecting plate are arranged to form an accommodation space in a vehicle height direction, and the rear wall cross beam is arranged to be spaced apart from the battery pack in the vehicle height direction, so that a ventilation opening is formed between the battery pack and the rear wall cross beam and communicates with the accommodation space.

19. The vehicle of claim 14, wherein, ​ 20. The vehicle of claim 19, wherein, The rear wall cross beam is located on the side of the first connecting plate away from the battery pack in the vehicle height direction.

21. The vehicle of claim 19, wherein, The first connecting plate is located on the upper side of the first mounting surface of the connecting integrated piece in the vehicle height direction.

22. The vehicle of any one of claims 3-13, wherein, The connecting integrated piece is formed with a rear subframe mounting point.

23. The vehicle of claim 22, wherein, A plane on which the rear subframe mounting point is located is located on the upper side of the first mounting surface in the vehicle height direction.

24. The vehicle of claim 22, wherein, The rear subframe mounting point is located on the rear side of the connection between the battery pack and the connecting integrated piece of the vehicle in the vehicle front-rear direction.

25. The vehicle of claim 22, wherein, The connecting integrated piece further comprises a rear longitudinal beam connecting portion, which is located on the rear side of the rear subframe mounting point in the vehicle front-rear direction.

26. The vehicle of claim 25, wherein, The first mounting surface is located on the lower side of the rear subframe mounting point and the rear longitudinal beam connecting portion is located on the upper side of the rear subframe mounting point in the vehicle height direction.

27. The vehicle of claim 22, wherein, The connecting integrated piece further comprises a rear longitudinal beam connecting portion, which is located on the upper side of the plane on which the rear subframe mounting point is located in the vehicle height direction.

28. The vehicle of claim 1, wherein, The first connecting surface is located on the rear side end surface of the rocker beam, and the connecting integrated piece is directly connected with the first connecting surface.

29. The vehicle of claim 1, wherein, The intermediate connecting piece comprises a third connecting surface and a fourth connecting surface, the third connecting surface is connected with the second connecting surface, and the fourth connecting surface is connected with the connecting integrated piece.

30. The vehicle of claim 29, wherein, The fourth connecting surface is parallel to or located on the same plane as the first connecting surface.

31. The vehicle of claim 1, wherein, The projection of the rocker beam in the vehicle front-rear direction at least partially overlaps the projection of the connecting integrated piece in the vehicle front-rear direction.

32. The vehicle of claim 1, wherein, The projection of the rocker beam in the vehicle left-right direction at least partially overlaps the projection of the connecting integrated piece in the vehicle left-right direction.

33. The vehicle of claim 1, wherein, The rocker beam comprises a body and a rocker reinforcement beam, the rocker reinforcement beam accommodating space is arranged in the body, and the rocker reinforcement beam is arranged in the rocker reinforcement beam accommodating space. The connecting integrated piece and the body and the rocker reinforcement beam are all connected, and the intermediate connecting piece and the body and the rocker reinforcement beam are all connected.

34. The vehicle of claim 33, wherein, The side wall reinforcement is arranged at least partially in the rocker reinforcement beam accommodating space, and the side wall reinforcement is connected with the rocker reinforcement beam and the body.

35. The vehicle of claim 34, wherein, The projection of the rocker reinforcement beam in the vehicle width direction, the projection of the intermediate connecting piece in the vehicle width direction, and the projection of the side wall reinforcement in the vehicle width direction at least partially overlap.

36. The vehicle of claim 34, wherein, The side wall reinforcement extends out of the rocker reinforcement beam accommodating space to be connected with the C-pillar rear reinforcement plate of the vehicle.

37. The vehicle of claim 36, characterized in that, The C-pillar rear reinforcement plate is located on the upper side of the rocker beam in the vehicle height direction.

38. The vehicle of claim 1, wherein, The connecting integrated piece further comprises a force transmission rib, which extends to the direction of the rocker beam along the direction of the rear cabin frame.

39. The vehicle of claim 38, wherein, The projection of the force transmission rib in the vehicle front-rear direction at least partially overlaps the projection of the rocker beam in the vehicle front-rear direction.

40. The vehicle of claim 1, wherein, The passenger cabin frame further comprises a seat cross beam, and the projection of the rocker beam in the vehicle height direction at least partially overlaps the projection of the seat cross beam in the vehicle height direction.

41. The vehicle of claim 40, wherein, The projection of the rocker beam in the vehicle width direction at least partially overlaps the projection of the seat cross beam in the vehicle width direction.

42. The vehicle of claim 40, wherein, The rocker beam includes an accommodation portion for partially accommodating the seat cross beam.

43. The vehicle of claim 42, characterized in that, The rocker beam is provided with a battery pack mounting portion which is located on the lower side of the accommodation portion in the vehicle height direction and which is located on the outer side of the accommodation portion in the vehicle width direction.

44. The vehicle of claim 43, characterized in that, The rocker beam is further provided with a battery pack sealing portion which is located between the accommodation portion and the battery pack mounting portion in the vehicle height direction and which is located between the accommodation portion and the battery pack mounting portion in the vehicle width direction.

45. The vehicle of claim 40, wherein, A transverse fixing member is further included which is connected between the rocker beam and the seat cross beam.

46. The vehicle of claim 1, wherein, The battery pack of the vehicle is at least partially formed into a vehicle body floor.

47. The vehicle of claim 1, wherein, An upper end of a C-pillar rear reinforcement plate of the vehicle is connected to a vehicle frame longitudinal beam of the passenger compartment frame.

48. The vehicle of claim 47, characterized in that, An upper end of the C-pillar rear reinforcement plate is connected to a rear quarter upper cross beam of the passenger compartment frame.

49. The vehicle of claim 47, wherein, A C-pillar front reinforcement plate is further included, an upper end of the C-pillar front reinforcement plate is connected to the vehicle frame longitudinal beam, and a lower end of the C-pillar front reinforcement plate is connected to a rocker beam of the vehicle.

50. The vehicle of claim 49, wherein, The C-pillar front reinforcement plate is provided on a front side of the C-pillar rear reinforcement plate.

51. The vehicle of claim 49, wherein, The C-pillar rear reinforcement plate is provided with a C-pillar front reinforcement plate connecting portion, and the C-pillar rear reinforcement plate is connected to the C-pillar front reinforcement plate through the C-pillar front reinforcement plate connecting portion.

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