CN111391922B - Electric automobile frame - Google Patents

Electric automobile frame Download PDF

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Publication number
CN111391922B
CN111391922B CN201811645879.XA CN201811645879A CN111391922B CN 111391922 B CN111391922 B CN 111391922B CN 201811645879 A CN201811645879 A CN 201811645879A CN 111391922 B CN111391922 B CN 111391922B
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CN
China
Prior art keywords
mounting
support
shock absorber
sides
frame
Prior art date
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Active
Application number
CN201811645879.XA
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Chinese (zh)
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CN111391922A (en
Inventor
马广
王志平
王毅
王蒙
许晓楠
朱景鑫
孙喜冬
邢俊涛
田圆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Great Wall Motor Co Ltd
Original Assignee
Great Wall Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Great Wall Motor Co Ltd filed Critical Great Wall Motor Co Ltd
Priority to CN201811645879.XA priority Critical patent/CN111391922B/en
Publication of CN111391922A publication Critical patent/CN111391922A/en
Application granted granted Critical
Publication of CN111391922B publication Critical patent/CN111391922B/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/09—Means for mounting load bearing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B62D25/084—Radiator supports

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention relates to an electric automobile frame, which comprises longitudinal beams arranged on two sides respectively, and a front end structure, a middle structure and a rear end structure which are arranged at the front part, the middle part and the rear part of the longitudinal beams on the two sides respectively, and also comprises a plurality of suspension mounting brackets which are arranged on the longitudinal beams on the two sides respectively, wherein a suspension is arranged in each suspension mounting bracket, and a motor mounting assembly with motor mounting brackets which are arranged on the longitudinal beams on the two sides relatively is also arranged in at least one of the front end structure and the rear end structure. According to the electric automobile frame, the two motor mounting brackets are arranged on the longitudinal beams on the two sides, so that the motor shell can play a role of a transverse beam due to the mounting of the motors on the motor mounting brackets; in addition, the frame cross beam is formed by the power battery pack shell fixedly connected with the longitudinal beams on the two sides, so that the arrangement of the existing frame cross beam can be omitted, the overall weight of the frame is reduced, and the light-weight design of the vehicle can be facilitated.

Description

Electric automobile frame
Technical Field
The invention relates to the technical field of automobiles, in particular to an electric automobile frame.
Background
With the increasing shortage of energy and environmental pollution, electric vehicles are receiving more and more attention. At present, an electric automobile body in the prior art is usually composed of more beam structures because of the need of bearing more cabin components, so that the structure is complex, the weight is large, and the light weight design of the automobile is not facilitated. In addition, the electric automobile frame has longeron and crossbeam simultaneously usually, and locates on the frame crossbeam with motor and power battery packing usually to lead to the whole weight of frame great, be unfavorable for lightweight design, also lead to electric automobile's energy consumption simultaneously more.
Disclosure of Invention
In view of the above, the present invention is directed to a frame of an electric vehicle, so as to reduce the weight of the frame and facilitate light weight design.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an electric automobile frame comprises longitudinal beams arranged on two sides respectively, and a front end structure, a middle structure and a rear end structure which are arranged at the front part, the middle part and the rear part of the longitudinal beams on the two sides respectively, wherein the front end structure comprises a front shock absorber tower assembly, a water tank installation assembly with an installation frame, a front cross beam which is close to the installation frame and connected between the longitudinal beams on the two sides, a front anti-collision beam assembly fixedly connected to the end parts of the longitudinal beams on the two sides, and front suspension frame installation assemblies which are arranged on the longitudinal beams on the two sides respectively; and the number of the first and second electrodes,
the middle structure comprises a beam structure connected between the longitudinal beams on the two sides, and the beam structure is formed by power battery pack shells fixedly connected with the longitudinal beams on the two sides through connecting parts;
the rear end structure comprises a rear shock absorber tower assembly, a rear cross beam connected between the longitudinal beams on the two sides, rear anti-collision beam assemblies fixedly connected to the end parts of the longitudinal beams on the two sides, and rear suspension mounting assemblies respectively arranged on the longitudinal beams on the two sides;
the electric automobile frame further comprises a plurality of suspension mounting brackets which are respectively arranged on the longitudinal beams on the two sides, suspensions are arranged in the suspension mounting brackets, and a motor mounting assembly with motor mounting brackets which are oppositely arranged on the longitudinal beams on the two sides is further arranged in at least one of the front end structure and the rear end structure.
Further, the front damper tower assembly comprises two front damper towers which are oppositely arranged on the longitudinal beams on two sides; the bottom of the mounting frame is connected with the longitudinal beams on two sides, and a water tank mounting point is arranged on the mounting frame; and the front suspension mounting assembly at least comprises a swing arm mounting part.
Furthermore, a front shock absorber reinforcing bracket is connected between the tops of the front shock absorber towers on the two sides.
Furthermore, the front shock absorber tower comprises a shock absorber tower body, wherein the shock absorber tower body is provided with a body support and a mounting support, the body support is composed of a first main body with a U-shaped section and a second main body fixedly connected to the top end of the first main body, and the mounting support is covered and buckled on the top of the body support; the shock absorber mounting structure comprises a first main body, a second main body, a mounting bracket, a shock absorber through hole and a shock absorber mounting portion, wherein a through hole is formed between the first main body and the second main body, a half shaft channel is formed at the bottom end of the first main body, the mounting bracket is fixedly connected with the first main body and the second main body, and the shock absorber through hole is communicated with the through hole and the shock absorber mounting portion is located on one side of the shock absorber through hole.
Further, a body reinforcing support is embedded in the body support, the body reinforcing support is fixedly connected with the first main body and the second main body respectively, and reinforcing support through holes are formed in the body reinforcing support corresponding to the shock absorber through holes.
Further, in uncovered department of first main part has linked firmly the body support reinforcing plate, the body support reinforcing plate is followed first main part direction of height extends the setting, and corresponding to the semi-axis passageway, in the semi-axis via hole has been constructed on the body support reinforcing plate.
Further, the front shock absorber reinforcing bracket comprises two connecting bodies which are respectively arranged corresponding to the front shock absorber towers on the two sides, and a connecting beam which is detachably connected between the connecting bodies on the two sides; each connector is fixedly connected to the mounting bracket on the corresponding side, and a connector through hole which is arranged to penetrate through the shock absorber through hole on the corresponding side is formed in each connector.
Furthermore, the water tank installation assembly further comprises two reinforcing beams which are respectively arranged corresponding to the longitudinal beams on the two sides, one end of each reinforcing beam is connected to the middle of the top end of the installation frame, and the other end of each reinforcing beam is connected with the front shock absorber tower arranged on the longitudinal beam on the corresponding side; and a support beam is respectively arranged at the outer side of each reinforcing beam, one end of each support beam is connected to the end part of the mounting frame, and the other end of each support beam is connected with the front shock absorber tower at the corresponding side.
Further, the front anti-collision beam assembly is fixedly connected with the longitudinal beams on two sides through the mounting frame, and the front anti-collision beam assembly and the longitudinal beams are located on two opposite sides of the mounting frame; and the front anti-collision beam assembly is provided with an upper anti-collision beam and a lower anti-collision beam which are arranged up and down, the upper anti-collision beam and the lower anti-collision beam are respectively connected onto the installation frame through an upper installation support and a lower installation support, the lower installation support is arranged corresponding to the longitudinal beam, and a force transmission structure with a crumple beam is arranged between the installation frame and the longitudinal beam corresponding to the upper installation support.
Further, the upper mounting bracket is an energy absorption box.
Further, the lower mounting bracket comprises a connecting plate connected with the first connecting piece and a connecting frame with one end fixedly connected to the connecting plate, and the lower anti-collision beam is connected to the other end of the connecting frame; and the connecting frame is provided with a first bracket arranged parallel to the longitudinal beam and a second bracket which is close to one end of the connecting plate and fixedly connected with the first bracket and the other end of which is arranged relative to the first bracket in a mode of outwards inclining towards one side of the end part of the lower anti-collision beam.
Further, one end of the crumple beam is connected to the mounting frame corresponding to the upper mounting bracket; the force transmission structure is also provided with the front shock absorber tower connected with the other end of the crumple beam, and one of the suspension mounting brackets located on the other side of the front shock absorber tower opposite to the crumple beam, and the suspension mounting bracket is respectively connected with the front shock absorber tower and the longitudinal beam.
Furthermore, force transmission reinforcing beams are arranged in the front shock absorber tower corresponding to the crumple beams on the two sides and the suspension mounting seat.
Furthermore, lower mounting cavities for accommodating lower mounting pieces are formed in the mounting frame corresponding to the longitudinal beams on the two sides respectively, each longitudinal beam is connected with the lower mounting piece on the corresponding side, and each lower mounting piece is connected with the lower anti-collision beam through a first connecting piece penetrating through the lower mounting piece and arranged at the bottom of the lower mounting cavity; and an upper mounting cavity for containing an upper mounting part is formed above the lower mounting cavity on two sides respectively, each crumple beam is connected with the upper mounting part on the corresponding side, and each upper mounting part is connected with the upper anti-collision beam through a second connecting piece penetrating through the upper mounting part and arranged at the bottom of the upper mounting cavity.
Furthermore, the collapse beam comprises a beam body, wherein at least part of the cross section of the beam body in the length direction of the beam body is provided with polygonal hole bodies, and the hole bodies are at least two connected in a row.
Furthermore, the beam body is composed of an outer plate body and an inner plate body which are fixedly connected together in a buckling mode, grooves are formed in the outer plate body and the inner plate body in a bending mode respectively, and the hole body is formed by surrounding the grooves formed in the outer plate body and the inner plate body in a corresponding mode.
Further, the swing arm installation department including link firmly respectively in preceding lower swing arm installing support on the longeron and back lower swing arm installing support, and in it has stabilizer bar installation position to integrate on the preceding lower swing arm installing support.
Furthermore, the motor mounting assembly is arranged in the front end structure, and the motor mounting bracket is fixedly connected to one of the suspension mounting brackets.
Further, power battery package casing including the drain pan that is constructed with the holding chamber, and constitute with be connected between the drain pan, with the closing cap the lid in holding chamber, in the holding intracavity is equipped with at least and places the district with the module of laying the battery module, and arrange with the pencil that the battery module links to each other and the pipeline passageway of cooling line, in the module is placed and is provided with the wall that the multichannel was arranged along frame width direction side by side in the district, each the both ends that cut off respectively with the double-phase offside inner wall in holding chamber meets, just cut off in the module is placed and is separated a plurality of fixes in the district the module place the unit of battery module, and in be equipped with on the drain pan or the lid and constitute the intercommunication mouth that pencil and cooling line are connected with the external world.
Furthermore, the connecting portion comprises a plurality of fixing holes which are formed in the bottom shell and are arranged around the edge of the bottom shell, connecting holes which are formed in the longitudinal beam and correspond to the fixing holes, and bolt pairs which are connected and arranged in the corresponding fixing holes and the connecting holes, and the fixing holes which are arranged close to the module placing area are respectively arranged at the end portions corresponding to the partitions.
Furthermore, the module placing area is positioned in the middle of the accommodating cavity, and module placing areas for placing the module control module and the cooling control module are arranged in the accommodating cavity on two sides of the module placing area; the wire harness and the cooling pipeline are respectively connected with the module control module and the cooling control module, and the module control module and the cooling control module are connected with the outside through the communication port.
Furthermore, a module fixing mechanism detachably fixed on the partition is arranged in the module placing unit, the module fixing mechanism is provided with a fixing plate attached to the partition and fixed to the top of the partition through a third connecting piece, and a pressing end for pressing and fixing the battery module is formed at the top of the fixing plate.
Furthermore, the pipeline channel comprises a channel bottom plate which is provided with a containing groove and is supported and fixed on the top of the partition, and a plurality of pipeline fixing seats which are arranged at intervals along the extending direction of the channel bottom plate, and the pipeline fixing seats are detachably fixed on the partition through fixing support legs constructed at the bottom of the pipeline fixing seats.
Furthermore, a plurality of connecting supports are detachably fixed at the top of the partition, the cover body is detachably fixed on the connecting supports through fixing pieces arranged by penetrating the cover body, and a sealing gasket is arranged between the cover body and the bottom shell.
Furthermore, battery modules are fixedly placed in each module placing unit, a wire harness and a cooling pipeline which are connected with a power supply end and a cooling unit in each battery module are arranged in the containing cavity, a module control module and a cooling control module are arranged in the containing cavity, the wire harness and the cooling pipeline are respectively connected with the module control module and the cooling control module, and the module control module and the cooling control module are connected with the outside through the communication ports on the cover body.
Furthermore, the parts of the longitudinal beams on the two sides, which are connected with the power battery pack shell, are provided with a straight middle beam body positioned in the middle and bent end beam bodies respectively connected with the two ends of the straight middle beam body; the two side edges of the power battery pack shell are arranged along the longitudinal beam.
Further, the longitudinal beams are divided into front longitudinal beams and rear longitudinal beams connected in series by the rear shock absorber tower due to the connection of the rear shock absorber tower.
Further, the rear shock absorber tower comprises a rear shock absorber support, a rear shock absorber mounting seat connected to the top of the rear shock absorber support, and a tower top support frame connected to one side of the rear shock absorber support; the rear shock absorber mounting seat is provided with a shock absorber through hole, and a shock absorber mounting part is arranged on one side of the shock absorber through hole; the rear shock absorber support is connected between the front longitudinal beam and the rear longitudinal beam in series, the tower top support frame is connected between the front longitudinal beam and one side of the rear shock absorber support, and a half shaft channel is formed between the bottom of the rear shock absorber support and the front longitudinal beam in an enclosing mode.
Further, a rear shock absorber support reinforcing plate is arranged in the rear shock absorber support; rear suspension installation assembly include in the back that sets up in the rear shock absorber support is gone up the control arm installation department, and in swing arm installation department and back lower swing arm installation department are gone up to the back that sets up in the top of the tower support frame.
Furthermore, the rear upper control arm mounting part comprises a rear upper control arm mounting bracket fixedly connected in the rear shock absorber support, the rear upper control arm mounting bracket is arranged close to the inner wall of one side of the rear shock absorber support, and control arm mounting holes are correspondingly formed in the rear upper control arm mounting bracket and the inner wall of the side; and the rear upper swing arm installation part and the rear lower swing arm installation part are arranged in the tower top support frame in an upper and lower way, and are respectively provided with swing arm installation holes.
Furthermore, in each of the suspension mounting brackets on both sides, one of the suspension mounting brackets is formed by the tower top support frame, and the suspension is supported on the top of the tower top support frame.
Furthermore, the motor mounting assembly is arranged in the rear end structure, and the motor mounting supports on two sides are fixedly connected to the tower top support frame on the corresponding side respectively.
Furthermore, the rear cross beam is connected between the front longitudinal beams on the two sides, and a rear reinforcing beam is arranged between the rear longitudinal beams on the two sides and the rear cross beam; the rear anti-collision beam assembly comprises rear crumple beams respectively connected to the end portions of the rear longitudinal beams on the two sides, and rear anti-collision beams connected between the rear crumple beams on the two sides.
Furthermore, the suspension comprises an outer sleeve which is arranged in the suspension mounting bracket in a pressing mode, and an inner sleeve which is arranged in the outer sleeve in a penetrating mode, the outer sleeve and the inner sleeve are fixedly connected together through a rubber bushing arranged between the outer sleeve and the inner sleeve, and two ends of the inner sleeve respectively extend out of the outer sleeve; the screw rod is characterized by further comprising a gasket buckled at one end of the inner sleeve, and a screw rod penetrating through the gasket and arranged on the inner sleeve, wherein the screw head of the screw rod is clamped on one side of the gasket, the rod body of the screw rod extends out of the inner sleeve, and a limiting mechanism limiting the gasket to rotate relative to the inner sleeve is arranged between the gasket and the inner sleeve.
Furthermore, the limiting mechanism comprises a limiting groove formed at one end of the inner sleeve close to the gasket and a limiting bulge arranged on the gasket and embedded in the limiting groove; and follow extremely close to the one end of gasket, interior sheathed tube internal diameter diminishes and sets up, the spacing groove is for following interior sheathed tube radial indent shaping in on interior sheathed tube inner wall.
Furthermore, the cross section of the longitudinal beam is in a square shape and is composed of an upper plate body and a lower plate body which are buckled with each other and are connected in a spot welding mode, the thickness of the upper plate body and the thickness of the lower plate body are 1.6-3.0mm, and a reinforcing plate body connected between the upper plate body and the lower plate body is arranged inside the longitudinal beam body.
Furthermore, a bottom guard plate is connected between the longitudinal beams on two sides adjacent to the front cross beam, and a rear guard plate is fixedly connected to the rear cross beam.
Compared with the prior art, the invention has the following advantages:
according to the electric automobile frame, the two motor mounting brackets are arranged on the longitudinal beams on the two sides, so that the motor shell can play a role of a transverse beam due to the mounting of the motors on the motor mounting brackets; in addition, the frame cross beam is formed by the power battery pack shell fixedly connected with the longitudinal beams on the two sides, so that the mounting requirement of the power battery pack shell can be met, the arrangement of the existing frame cross beam can be omitted, the overall weight of the frame is reduced, the light-weight design of a vehicle can be facilitated, and the electric vehicle frame can have better structural strength and rigidity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an electric vehicle frame according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a front end structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a front end structure according to another view angle in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a front end structure according to another view angle in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a front end structure according to another view angle in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a front end structure according to another view angle in the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a front shock absorber tower according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a front shock absorber tower from another perspective according to an embodiment of the present invention;
FIG. 9 is a diagram illustrating the connection between the body bracket and the force transmission reinforcing bracket according to the embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a first body according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a second body according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a body bracket stiffener according to an embodiment of the present invention;
FIG. 13 is a schematic structural view of a body-reinforcing brace according to an embodiment of the present invention;
FIG. 14 is a schematic view of a force transmitting reinforcing bracket according to an embodiment of the present invention;
FIG. 15 is a schematic view of a force-transmitting reinforcing brace according to an embodiment of the present invention from another perspective;
FIG. 16 is a schematic structural view of a front shock absorber tower reinforcing brace according to an embodiment of the present invention;
fig. 17 is a schematic structural view of a connection beam according to an embodiment of the present invention;
FIG. 18 is a schematic structural diagram of a connector according to an embodiment of the present invention;
fig. 19 is a schematic structural view of a water tank installation structure according to an embodiment of the present invention;
FIG. 20 is a schematic structural view of a water tank installation structure according to an embodiment of the present invention from another perspective;
FIG. 21 is a view showing an installation state of the water tank installation structure in a vehicle according to the embodiment of the present invention;
FIG. 22 is a view showing an installation state of the water tank installation structure according to the embodiment of the present invention at another view on the vehicle;
FIG. 23 is a schematic view of a lower mount according to an embodiment of the present invention;
FIG. 24 is a schematic structural view of an upper mounting member according to an embodiment of the present invention;
fig. 25 is an assembled state of the double impact beam structure according to the embodiment of the present invention on a vehicle;
fig. 26 is a schematic structural view of an upper impact beam according to an embodiment of the present invention;
FIG. 27 is a schematic structural view of an upper impact beam from another perspective in accordance with an embodiment of the present invention;
FIG. 28 is a schematic structural view of an upper mounting bracket according to an embodiment of the present invention;
fig. 29 is a schematic structural view of a lower impact beam according to an embodiment of the present invention;
fig. 30 is a schematic structural view of a front plate according to an embodiment of the present invention;
fig. 31 is a schematic structural view of a rear plate according to an embodiment of the present invention;
FIG. 32 is a schematic view of a lower mounting bracket according to an embodiment of the present invention;
FIG. 33 is a schematic structural view of a lower mounting bracket according to an embodiment of the present invention from another perspective;
FIG. 34 is a schematic structural view of a crush beam structure according to an embodiment of the invention;
FIG. 35 is a schematic structural view of a crush beam structure according to an embodiment of the invention from another perspective;
FIG. 36 is a cross-sectional view taken along line A-A of FIG. 34;
fig. 37 is a schematic structural view of an outer plate according to an embodiment of the present invention;
fig. 38 is a schematic structural view of an inner plate according to an embodiment of the present invention;
FIG. 39 is another schematic structural view of a crush beam in accordance with an embodiment of the present disclosure;
FIG. 40 is a schematic view of a suspension according to an embodiment of the present invention;
FIG. 41 is a schematic view of a suspension structure according to another aspect of the present invention;
FIG. 42 is a view of the connection of the outer sleeve to the inner sleeve according to the embodiment of the present invention;
FIG. 43 is a schematic view of the construction of the inner sleeve according to an embodiment of the present invention;
FIG. 44 is a cross-sectional view taken along line B-B of FIG. 43;
FIG. 45 is an assembled state view of a gasket and washer according to an embodiment of the present invention;
FIG. 46 is a view showing an assembled state of a screw, a washer and a washer according to the embodiment of the present invention;
FIG. 47 is a schematic illustration of a mid-frame configuration according to an embodiment of the present invention;
FIG. 48 is a cross-sectional view taken along line C-C of FIG. 47;
fig. 49 is a schematic structural diagram of a power battery pack case structure according to an embodiment of the invention;
fig. 50 is a schematic structural diagram of a bottom case according to an embodiment of the invention;
FIG. 51 is a schematic structural diagram of the bottom case according to another view angle of the present invention;
FIG. 52 is a schematic structural diagram of a module fixing mechanism according to an embodiment of the present invention;
FIG. 53 is an enlarged view of portion I of FIG. 51;
FIG. 54 is a schematic view of a pipeline fixing seat and a fixing leg according to an embodiment of the present invention;
FIG. 55 is a schematic structural diagram of a cover according to an embodiment of the present invention;
FIG. 56 is an enlarged view of section II of FIG. 51;
FIG. 57 is a schematic structural view of a connecting bracket according to an embodiment of the present invention;
FIG. 58 is a schematic structural view of a rear end structure of a vehicle frame in accordance with an embodiment of the present invention;
FIG. 59 is a structural schematic view of the rear end structure of the vehicle frame in accordance with the exemplary embodiment of the present invention from another perspective;
FIG. 60 is a schematic view of an installation configuration of a rear absorber tower on a stringer according to an embodiment of the present invention;
FIG. 61 is a schematic view of an alternative perspective view of the rear absorber tower mounted to a side rail in accordance with an embodiment of the present invention;
FIG. 62 is a schematic structural diagram of an aft absorber tower according to an embodiment of the present invention;
FIG. 63 is a schematic structural view of a rear absorber tower from another perspective in accordance with an embodiment of the present invention;
FIG. 64 is a schematic structural view of a rear shock absorber mount according to an embodiment of the present invention;
FIG. 65 is a schematic structural view of a rear shock absorber mount according to an embodiment of the present invention from another perspective;
description of reference numerals:
1-longitudinal beam, 101-upper plate, 102-lower plate, 103-front longitudinal beam, 104-rear longitudinal beam;
2-mounting a bracket on the rear lower swing arm;
3-front shock absorber tower, 301-first main body, 3011-half shaft channel, 302-second main body, 3021-bending edge, 303-body support reinforcing plate, 3031-half shaft via hole, 3032-notch, 304-mounting support, 3042-shock absorber mounting hole, 305-body reinforcing support, 306-force transmission reinforcing support, 3061-convex part and 3062-concave part;
4-mounting a bracket on the front lower swing arm;
5-a water tank mounting assembly, 501-a mounting frame, 5011-a frame body, 5012-a reinforcing rod, 503-a lower mounting cavity, 504-a lower mounting piece, 505-an upper mounting cavity, 506-an upper mounting piece;
6-front anti-collision beam;
601-upper anti-collision beam, 602-upper mounting bracket;
603-lower anti-collision beam, 6031-front plate body, 6032-rear plate body, 6033-through hole and 6034-annular bulge;
604-lower mounting bracket, 6041-first bracket, 6042-second bracket, 6043-connecting plate, 6044-connecting bolt;
605-an crumple beam, 6051-an outer plate body, 6052-an inner plate body, 6053-a hole body, 6054-a connecting cavity, 6055-a groove and 6056-welding flanging;
7-front shock absorber reinforcing support, 701-connecting beam, 7011-connecting hole, 702-connecting body, 7021-connecting body through hole, 7022-connecting body mounting through hole, 7023-mounting hole and 7024-connecting groove;
8-a suspension mounting bracket, 9-a motor mounting bracket, 10-a bottom guard plate and 11-a support beam;
12-suspension, 1201-outer sleeve, 1202-rubber bushing, 1203-inner sleeve, 12031-limiting groove, 1204-screw, 1205-gasket, 12051-limiting protrusion, 12052-fabrication hole, 1206-gasket.
13-power battery pack housing;
1301-a bottom shell, 13011-a module placing unit, 13012-a partition, 13013-a pipeline channel, 13014-a pipeline fixing seat and 13015-a fixing hole;
13016-module fixing mechanism, 130161-fixing plate, 130162-flanging, 130163-connecting lug;
13017-battery module, 13018-wire harness, 13019-fixed leg, 130110-connecting bracket, 1301101-main body, 1301102-third threaded hole;
1302-cover, 13021-mounting hole, 13022-notch;
14-rear cross member;
15-rear shock absorber tower, 1501-rear shock absorber support, 15011-semicircular hole, 1502-rear upper control arm mounting bracket, 1503-rear shock absorber support reinforcing plate, 1504-rear shock absorber mounting seat and 15041-shock absorber through hole;
16-a tower top support frame, 17-a rear guard plate, 18-a rear lower control arm mounting bracket, 19-a toe-in arm mounting bracket, 20-a rear anti-collision beam, 22-a rear upper swing arm mounting bracket and 23-a rear lower swing arm mounting bracket.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment relates to an electric automobile frame, as shown in fig. 1, which comprises longitudinal beams 1 respectively arranged on two sides, a front end structure, a middle structure and a rear end structure which are respectively arranged at the front part, the middle part and the rear part of the longitudinal beams 1 on the two sides, a plurality of suspension mounting brackets 8 respectively arranged on the longitudinal beams 1 on the two sides, suspensions 12 arranged in the suspension mounting brackets 8, and a motor mounting assembly with motor mounting brackets 9 oppositely arranged on the longitudinal beams 1 on the two sides in at least one of the front end structure and the rear end structure. In the present embodiment, for convenience of the following description, the motor mounting assemblies mounted on the front end structure and the rear end structure are referred to as a "front motor mounting assembly" and a "rear motor mounting assembly", respectively.
Specifically, as shown in fig. 2 to 6, the front end structure of the present embodiment mainly includes longitudinal beams 1 disposed on both sides in a vehicle frame, a front shock absorber tower 3 assembly, a water tank mounting assembly 5, a front cross beam, a front impact beam assembly, a front suspension mounting assembly, a front motor mounting assembly, and a plurality of suspension mounting brackets 8. Wherein, the front beam is close to water tank installation assembly 5, connects between the longeron 1 of both sides, in addition, is adjacent to the front beam, is connected with end backplate 10 between the longeron 1 of both sides to improve frame anticollision and dustproof and waterproof effect.
As shown in fig. 2, the front suspension mounting assembly of the present embodiment is formed by two sets of side members 1 disposed on both sides, respectively, and includes a swing arm mounting portion. The swing arm mounting part specifically comprises a front upper swing arm mounting bracket 304 and a front lower swing arm mounting bracket 4 which are respectively fixedly connected to the longitudinal beam 1, hinge holes which can be hinged and connected with the swing arms are respectively formed in the front upper swing arm mounting bracket 304 and the front lower swing arm mounting bracket 4, and in addition, a mounting position of a stabilizer bar is further integrated on the front upper swing arm mounting bracket 304. The front motor mounting assembly comprises two motor mounting brackets 9 which are oppositely arranged on the longitudinal beams 1 at two sides, so that the connection between the motor and the two longitudinal beams 1 is formed by mounting the motor on the two motor mounting brackets 9, and the motor can play a role of a transverse beam. And as shown in fig. 2 and 3, the motor mounting bracket 9 is attached to the suspension mounting bracket 8 adjacent the front damper tower 3 assembly.
Specifically, as shown in fig. 2, the front absorber tower 3 assembly of the present embodiment includes two front absorber towers 3 arranged on the side members 1 on both sides in opposition. The front damper tower 3 includes a damper tower body, as shown in fig. 7 and 8, which mainly includes a body bracket fixedly connected to the longitudinal beam 1, a mounting bracket 304 covering the top of the body bracket, and a force-transmitting reinforcing bracket 306 provided inside the body bracket, in an overall structure. In this embodiment, the force transmission reinforcing bracket 306 is provided in the front absorber tower 3, so that not only can the structural strength of the front absorber tower 3 be improved, but also the transmission of the collision force applied to the front part of the vehicle to the rear part of the vehicle can be achieved when the vehicle collides, and the damage caused by the vehicle collision can be effectively reduced.
As shown in fig. 9, the body bracket of this embodiment is composed of a first main body 301 and a second main body 302 fixedly connected to the top end of the first main body 301, and a through hole is formed around the first main body 301 and the second main body 302, and the aforementioned mounting bracket 304 is fixedly connected to the first main body 301 and the second main body 302. In order to improve the structural strength and reduce the processing cost as much as possible, the first main body 301 of the present embodiment has a U-shaped cross section, and two flanges 130162 are formed at two sides and a bottom of the first main body 301, as shown in fig. 10. In addition, a half-shaft passage 3011 is formed at the bottom end of the first body 301 based on the usability of the front absorber tower 3.
The second main body 302 is formed in a C-shape in cross section as shown in fig. 11, and in order to improve the structural strength, a flange 130162 is formed at the edge of the second main body 302, and the first main body 301 and the second main body 302 are fixedly connected together by a flange 130162 formed at the edge of the first main body and the second main body, respectively, so as to improve the structural strength of the body bracket. In addition, in order to further improve the structural strength, a bent side 3021 extending away from the first body 301 is formed at the bottom end of the second body 302.
Still as shown in fig. 7, in this embodiment, in order to improve the structural strength of the body support, a body support reinforcing plate 303 is fixedly connected to the opening of the first main body 301, and the top of the body support reinforcing plate 303 is sunk into the first main body 301, so as to form a channel for passing the shock absorber between the body support reinforcing plate 303 and the second main body 302. The structure of the body support reinforcing plate 303 is shown in fig. 12, and the body support reinforcing plate 303 is integrally bent and extends along the height direction of the first main body 301, and a half-axis through hole 3031 is formed on the body support reinforcing plate 303 corresponding to the half-axis channel 3011.
In addition, in order to facilitate the fastening between the body frame stiffener 303 and the first main body 301, corresponding to the flanges 130162 on the first main body 301, flanges 130162 are also formed at two opposite edges of the body frame stiffener 303 to be fastened to the flanges 130162 of the first main body 301 in a lap joint manner, so as to form the fastening between the first main body 301 and the second main body 302. Meanwhile, the structural strength of the front absorber tower 3 can be further improved by providing the flanges 130162 on the body bracket reinforcing plate 303. In addition, as shown in fig. 7, the bottom end of the body bracket reinforcing plate 303 of the present embodiment is disposed to extend outward relative to the first main body 301, so that the body bracket reinforcing plate 303 can be easily fixed to the longitudinal beam 1, and the installation strength of the front absorber tower 3 can be further improved. At this time, in order to prevent the body frame reinforcing plate 303 from interfering with other members fixedly connected to the side member 1, as shown in fig. 12, a notch 3032 for avoiding the other members is provided at the overhanging end of the body frame reinforcing plate 303.
The aforementioned structure of the mounting bracket 304 is shown in fig. 7 and 13, and the mounting bracket 304 is configured as a cylindrical structure having a truncated cone shape as a whole, and a damper through hole penetrating the through hole is configured at the top of the mounting bracket 304, and a damper mounting portion is configured at one side of the damper through hole. Based on the structure of the existing shock absorber, the shock absorber through hole of the embodiment is generally configured as a round hole, and three notches which are arranged at intervals along the circumferential direction of the round hole and protrude outwards along the radial direction of the round hole are configured on the round hole. In addition, for convenience of manufacturing, the damper mounting portion of the present embodiment is specifically used for the damper mounting hole 3042 provided on the damper via hole side. Specifically, the damper mounting holes 3042 of the present embodiment are two oppositely disposed to improve the mounting effect of the damper. And a shock absorber mounting hole 3042 thereof is further configured as an elongated hole for easy installation.
In this embodiment, in order to further improve the installation effect of the shock absorber on the front shock absorber tower 3, as shown in fig. 7 and 8, a body reinforcing bracket 305 is embedded in the body bracket, and the body reinforcing bracket 305 is fixedly connected to the first main body 301 and the second main body 302, respectively. The structure of the body reinforcing bracket 305 is similar to that of the mounting bracket 304, the whole body is also configured into a truncated cone-shaped cylindrical structure, corresponding to the damper through hole, a reinforcing bracket through hole is also formed on the body reinforcing bracket 305, and the reinforcing bracket through hole is formed along with the damper through hole. At the same time, corresponding to the damper mounting hole 3042, a reinforcing bracket mounting through hole is also provided on the body reinforcing bracket 305.
As shown in fig. 9, the aforementioned force transmission reinforcing bracket 306 is specifically located above the half-shaft channel 3011 and arranged along the length direction of the longitudinal beam 1, and in order to improve the use effect, the force transmission reinforcing bracket 306 is fixedly connected with at least two inner side walls of the first main body 301, so as to improve the connection firmness between the force transmission reinforcing bracket 306 and the first main body 301. In order to improve the use effect, as shown in fig. 14 and fig. 15, the force transmission reinforcing bracket 306 of the present embodiment has a cross section configured with alternately arranged convex portions 3061 and concave portions 3062, which not only improves the structural strength of the force transmission reinforcing bracket 306, but also improves the force transmission effect.
Further, the convex portion 3061 and the concave portion 3062 of the present embodiment are arranged in parallel and extend along the length direction of the side member 1, so that the effect of transmitting the collision force along the side member 1 can be further improved. In addition, in order to facilitate the fixing between the force transmission reinforcing bracket 306 and the first main body 301, a flange 130162 is formed at the edge of the force transmission reinforcing bracket 306, and the force transmission reinforcing bracket 306 is fixed to the inner side wall of the first main body 301 through a flange 130162 formed at the edge of the force transmission reinforcing bracket 306.
In this embodiment, in order to improve the use effect, as shown in fig. 2 and 3, a supporting beam is connected between the front absorber towers 3 on both sides near the bottom of the front absorber tower 3, and a front absorber reinforcing bracket 7 is further connected between the tops of the front absorber towers 3 and the front absorber reinforcing bracket. As shown in fig. 16, the reinforcing bracket of the front absorber tower 3 of the present embodiment includes two connecting bodies 702 respectively disposed corresponding to the front absorber towers 3 on both sides, and a connecting beam 701 connected between the connecting bodies 702 on both sides, wherein each connecting body 702 is fixedly connected to the front absorber tower 3 on the corresponding side.
The connection beam 701 of the present embodiment has a structure as shown in fig. 17, which is configured to be elongated as a whole, and in order to reduce the processing cost, the connection beam 701 of the present embodiment is specifically made of a profile. And based on the symmetrical arrangement of the front shock absorber towers 3 on both sides, the connecting beam 701 is specifically made of a profile with a regular cross section, so that the reinforcing support of the front shock absorber tower 3 distributes a balanced connecting force on the front shock absorber towers 3 on both sides. In addition, in order to facilitate the coupling of the coupling bar 701 with the coupling body 702, the cross section of the coupling bar 701 of the present embodiment is configured to be rectangular, so that the coupling bar 701 can be directly manufactured by using a rectangular profile in actual manufacturing. In addition, in order to facilitate the detachable connection between the connection beam 701 and the connection body 702, connection holes 7011 are respectively formed at both ends of the connection beam 701. In addition, in order to improve the connection strength, the four connection holes 7011 of the present embodiment are arranged in a rectangular shape, and further, each connection hole 7011 is disposed to penetrate through both sides of the connection beam 701, so that the connection member is disposed to penetrate through the connection beam 701, and the connection effect between the connection beam 701 and the connection body 702 can be improved.
Based on the same structure of the front shock absorber towers 3 on both sides, the two connecting bodies 702 of the present embodiment are also substantially the same in structure and are specifically arranged in a left-right symmetrical relationship for the convenience of manufacturing, and the specific structure will be described in detail below by taking only the connecting body 702 on the right side shown in the state of fig. 16 as an example. Specifically, the structure of the connecting body 702 of the present embodiment is shown in fig. 18, the whole of which can be formed by stamping and bending a sheet metal member, a connecting body through hole 7021 arranged to penetrate through the damper through hole on the front damper tower 3 on the corresponding side is formed on the connecting body 702, and two through holes for passing a fastener are formed on one side of the connecting body through hole 7021 corresponding to the damper mounting holes 3042. In order to prevent the connector 702 from interfering with the damper, the connector via 7021 of the present embodiment is conformal with the damper via described below.
In addition, as shown in fig. 18, the connecting body 702 is provided with mounting holes 7023 corresponding to the connecting holes 7011, so that two ends of the connecting beam 701 are connected to the connecting body 702 through connecting members penetrating through the connecting holes 7011 and the mounting holes 7023, thereby achieving detachable connection between the connecting body 702 and the connecting beam 701, and facilitating assembly of the whole vehicle. Still referring to fig. 18, in the present embodiment, in order to improve the use effect, especially the structural strength of the front shock absorber reinforcing bracket 7, a connecting groove 7024 for inserting the end portion of the connecting beam 701 is formed at the portion of the connecting body 702 for connecting the connecting beam 701, that is, the left end of the connection, and the mounting hole 7023 is formed at the connecting groove 7024, and the mounting hole 7023 penetrates through the connecting groove 7024, so that the connecting member can traverse the connecting groove 7024, thereby improving the connection firmness between the connecting body 702 and the connecting beam 701.
As shown in fig. 19 to 22, the tank mounting assembly 5 of the present embodiment mainly includes a mounting frame 501 and a reinforcing beam; wherein, installation frame 501 is fixed to be set up in the front end of frame, and the bottom of installation frame 501 links to each other with longeron 1 of both sides in the frame to be equipped with the water tank mounting point on installation frame 501.
In order to improve the structural stability and reduce the overall weight of the mounting frame 501, the mounting frame 501 of this embodiment is configured to be rectangular, and includes a frame main body 5011 with a hollow portion and a reinforcing rod 5012 disposed at the hollow portion. Of course, the mounting frame 501 may be configured in other shapes such as "n" shape, "m" shape, and the like, in addition to being configured in a rectangular shape. In this embodiment, in order to further reduce the weight of the mounting frame 501, the frame body 5011 is constituted by an inner frame, an outer frame, and a plurality of support plates connected between the inner frame and the outer frame, which are nested. In addition, for convenience of manufacturing, the water tank mounting points of the present embodiment are embodied as a plurality of mounting holes 7023 configured on the mounting frame 501.
Based on the specific structure of the mounting frame 501, in order to improve the structural strength of the tank mounting assembly 5, as shown in fig. 19 and fig. 22, the reinforcing beams are specifically two reinforcing beams which are arranged corresponding to the longitudinal beams 1 on both sides, and one end of each reinforcing beam is connected to the middle of the top end of the mounting frame 501, and the other end of each reinforcing beam is connected to the front absorber tower 3 arranged on the longitudinal beam 1 on the corresponding side. In order to further increase the strength of the tank mounting assembly 5, a support beam 11 is provided outside each reinforcing beam, and one end of each support beam 11 is connected to the end of the mounting frame 501, and the other end is also connected to the front absorber tower 3 on the corresponding side.
Further, based on the arrangement position of the existing water tank in the vehicle, as shown in fig. 21 and 22, the mounting frame 501 of the present embodiment is provided to constitute the connection between the front impact beam 6 and the side member 1 in the vehicle frame, and the front impact beam 6 and the side member 1 are disposed on the opposite sides of the mounting frame 501. In this embodiment, in order to facilitate the connection between the mounting frame 501 and the impact beam and the longitudinal beams 1, as shown in fig. 20, lower mounting cavities 503 for accommodating the lower mounting members 504 are respectively formed on the frame main body 5011 corresponding to the longitudinal beams 1 on both sides, each longitudinal beam 1 is connected to the lower mounting member 504 on the corresponding side, and each lower mounting member 504 is connected to the impact beam through a first connecting member penetrating through the lower mounting member 504 and the bottom of the lower mounting cavity 503.
The concrete structure of lower installed part 504 is shown in fig. 23, and it includes connecting plate 6043 to and link firmly the grafting barrel in connecting plate 6043 one side, longeron 1 links firmly with the grafting barrel grafting promptly, and on foretell first connecting piece worn to locate connecting plate 6043, from this, link firmly with the grafting barrel through longeron 1, and first connecting piece pass connecting plate 6043 in proper order, install frame 501 and crashproof roof beam back and fastening even connection such as nut, can constitute the connection between crashproof roof beam, install frame 501 and longeron 1 three. For convenience of manufacturing, the first connecting member of the present embodiment may specifically adopt a connecting bolt 6044.
In addition, as shown in fig. 20 and 22, an upper mounting cavity 505 for receiving an upper mounting member 506 is formed above the lower mounting cavities 503 on both sides of the frame body 5011, and a second impact beam is provided above the impact beam. The structure of the upper mounting member 506 of this embodiment is similar to that of the lower mounting member 504 described above, and as shown in fig. 24, it is also composed of a connecting plate 6043 and a socket cylinder attached to one side of the connecting plate 6043. In addition, for the convenience of manufacturing, the second connecting member of the present embodiment may specifically employ a connecting bolt 6044.
The front impact beam assembly of this embodiment is fixedly connected to the end portions of the longitudinal beams 1 on both sides, and is fixedly connected to the longitudinal beams 1 on both sides by the mounting frame 501, and the front impact beam assembly and the longitudinal beams 1 are located on opposite sides of the mounting frame 501. As shown in fig. 25, the vehicle-mounted crash-proof structure includes an upper crash-proof beam 601 and a lower crash-proof beam 603 which are fixedly connected by a mounting frame 501 and a longitudinal beam 1, wherein the upper crash-proof beam 601 and the lower crash-proof beam 603 are respectively connected to the mounting frame 501 through an upper mounting bracket 602 and a lower mounting bracket 604, the lower mounting bracket 604 is arranged corresponding to the longitudinal beam 1 and corresponds to the upper mounting bracket 602, and a force-transmitting structure having a collapsing beam 605 is arranged between the mounting frame 501 and the longitudinal beam 1.
Specifically, the specific structure of the upper impact beam 601 of the present embodiment is shown in fig. 26 and 27, wherein the cross section of the upper impact beam 601 is specifically configured in a "square" shape in order to improve the structural stability of the upper impact beam 601. Based on this structure, in order to facilitate the manufacturing, the upper impact beam 601 of this embodiment can be formed by two front and rear plate bodies fastened together. In addition, in order to further improve the structural strength of the upper impact beam 601, as shown in fig. 27, a reinforcing plate is provided in the upper impact beam 601, and the reinforcing plate extends in the longitudinal direction of the upper impact beam 601 and is provided along the upper impact beam 601.
The upper mounting bracket 602 is specifically an energy absorption box, and the structure of the energy absorption box is as shown in fig. 28, the energy absorption box includes a box body fixedly connected to the upper impact beam 601, and a mounting plate fixedly connected to the other end of the box body relative to the upper impact beam 601, and a plurality of mounting holes 7023 for passing fasteners such as bolts are configured on the mounting plate.
The specific structure of the lower impact beam 603 of this embodiment is shown in fig. 29, and in order to improve the structural strength of the lower impact beam 603, a specific section of the lower impact beam is shaped like a Chinese character 'kou', and specifically, the lower impact beam is formed by fastening and fastening a front plate 6031 shown in fig. 30 and a rear plate 6032 shown in fig. 31. In addition, in order to improve the overall aesthetic property of the lower impact beam 603, the height of the middle portion of the lower impact beam 603 is greater than that of the two ends, and a through hole is formed in the middle portion of the lower impact beam 603 in the width direction of the lower impact beam 603. In order to improve the collapsing and energy absorbing effects of the lower impact beam 603, the through holes of the present embodiment are specially configured as kidney-shaped holes.
In this embodiment, in order to ensure the structural strength of the lower impact beam 603, the edge of the ring through hole is sealed with a cylinder connected between the front plate body 6031 and the rear plate body 6032 on both sides. Based on this structure, in this embodiment, in order to facilitate the manufacturing, as shown in fig. 29, 30 and 31, the cylinder is specifically formed by splicing annular protrusions 6034 integrally formed on the front plate 6031 and the rear plate 6032, respectively. Of course, the cylinder may be separately manufactured and then fixedly connected to the front plate 6031 and the rear plate 6032, respectively.
The specific structure of the lower mounting bracket 604 of this embodiment is shown in fig. 29 in combination with fig. 32 and 33, and mainly includes a connecting plate 6043 and a connecting frame having one end fixedly connected to the connecting plate 6043, wherein the lower impact beam 603 is fixedly connected to the other end of the connecting frame relative to the connecting plate 6043. In order to improve the connection effect, the connection plate 6043 of the present embodiment is configured to be trapezoidal, and thus the weight of the connection plate 6043 can be reduced as much as possible while facilitating the connection of the connection plate 6043 with the mounting frame 501. It should be noted that the connection plate 6043 may be configured in a triangular, rectangular, or circular structure instead of the trapezoidal shape.
In order to improve the use effect, the connecting frame at least comprises a first bracket 6041 arranged in parallel with the length direction of the vehicle and a second bracket 6042 which is close to one end of a connecting plate 6043, fixedly connected with the first bracket 6041 and provided with the other end outwards inclining relative to one side of the end part of the first bracket 6041 of the downward anti-collision beam 603. In the present embodiment, however, in order to reduce the processing cost, as shown in fig. 32 and 33, the connecting bracket is constituted only by the first bracket 6041 and the second bracket 6042. In order to improve the transmission effect of the oblique impact force, the angle between the first support 6041 and the second support 6042 is an acute angle, and thus the structural stability of the connecting frame can be improved to improve the connecting effect.
In this embodiment, the cross sections of the first bracket 6041 and the second bracket 6042 are both in a shape of a Chinese character 'kou', so as to improve the structural strength of the first bracket 6041 and the second bracket 6042, and reduce the weight of the first bracket 6041 and the second bracket 6042 to the maximum, thereby facilitating the light weight design of the entire vehicle. In addition to the cross-section of the first holder 6041 and the second holder 6042 of the present embodiment, the cross-section may have other configurations such as a "japanese" shape and a "U" shape.
In addition, in order to facilitate mounting of the lower mounting bracket 604 on the vehicle, as shown in fig. 29 and 32, a connecting portion for connecting the mounting frame 501 is provided on the connecting plate 6043. In addition, for the convenience of manufacturing, the connecting portion of the embodiment specifically includes a connecting hole 7011 disposed on the connecting plate 6043, and a bolt inserted into the connecting hole 7011. In this embodiment, the connection holes 7011 are preferably four that are distributed at each vertex of the connection plate 6043, and of course, when the specific shape of the connection plate 6043 changes, the number of the connection holes 7011 should be correspondingly adjusted.
In order to improve the energy absorption effect, the crumple beam 605 in this embodiment includes a beam body, and the cross section of the beam body in at least a part of the length direction of the beam body has a polygonal hole 6053 to increase the number of crumple sections and improve the energy absorption effect. In order to further improve the collapsing effect, the holes 6053 are at least two connected in a row, and each hole 6053 is arranged horizontally or vertically.
An exemplary structure of the above-described crush beam 605 is shown in fig. 34 to 36, wherein, for convenience of manufacturing, the beam body of the present embodiment is specifically composed of an outer plate body 6051 and an inner plate body 6052 which are fastened together, and the hole bodies 6053 are specifically two arranged in a vertical row and are arranged in a hexagonal shape. As shown in fig. 37 and 38, in order to construct the hole 6053, a groove 6055 is formed by bending the outer plate 6051 and the inner plate 6052, and the hole 6053 is formed by enclosing the grooves 6055 of the outer plate 6051 and the inner plate 6052. In addition, by constructing recess 6055, the structural strength of outer plate 6051 and inner plate 6052 can be improved.
In addition, the number of the hole bodies 6053 in this embodiment may be three, four, or the like, instead of two. In addition, the hole 6053 may be formed in other shapes such as a four-sided hole and a five-sided hole, instead of a six-sided hole. For convenience of manufacturing, the hole 6053 is preferably designed to have a polygonal structure with even number of sides, such as a quadrangular hole and a hexagonal hole.
In this embodiment, in order to improve the connection effect between the crush beam 605 and the mounting frame 501, a connection cavity 6054 into which the connection member is inserted is formed at one end of the beam body. In addition, for the convenience of manufacturing, as shown in fig. 35, the cross section of the connection cavity 6054 of the present embodiment is formed to be a single hole, so that the connection cavity 6054 is adapted to facilitate the manufacturing of the upper mounting member 506, and at the same time, the upper mounting member 506 and the connection cavity 6054 are engaged with each other. Further, as shown in fig. 34 and fig. 37 and 38, in order to improve the use effect, a welding flange 1301626056 is formed at the other end of the beam body with respect to the end having the connection cavity 6054 in an eversion arrangement, so that it is possible to facilitate the connection between the crush beam 605 and the front absorber tower 3 and, at the same time, to improve the reliability of the connection therebetween.
It should be noted that, in addition to the above structure, the crumple beam 605 may also adopt a structure as shown in fig. 39, and the crumple beam 605 of the structure includes a beam body, and a plurality of crumple holes are configured at intervals along the length direction of the beam body, so that the double-collision-prevention beam structure can rapidly transmit collision force when a vehicle collides, and the crumple beam 605 can efficiently collapse and absorb energy, thereby effectively protecting pedestrians and vehicles.
In addition, in order to further improve the use effect, as shown in fig. 39, the size of the crush hole is gradually reduced in the direction to the side member 1, so that the crush strength of the front portion of the crush beam 605 is greater than that of the rear portion of the crush beam 605, thereby effectively reducing the transmission of the collision force to the rear portion of the vehicle, and further effectively protecting other components of the vehicle. It should be noted that, instead of forming the crush holes in the crush beam 605, the crush grooves may be formed in the crush beam 605, and the crush energy absorption effect of the crush beam 605 may be achieved.
The suspension 12 of this embodiment is structured as shown in fig. 40 and fig. 41, and mainly includes, in its overall structure, an outer casing 1201, an inner casing 1203 penetrating through the outer casing 1201, a spacer 1205 fastened to one end of the inner casing 1203, a screw 1204 penetrating through the spacer 1205 and the inner casing 1203, and a position-limiting mechanism disposed between the spacer 1205 and the inner casing 1203. As shown in fig. 42, the outer sleeve 1201 and the inner sleeve 1203 of this embodiment are vulcanized and fixed together by a rubber bushing 1202 arranged therebetween, and two ends of the inner sleeve 1203 extend out of the outer sleeve 1201 respectively. As shown in fig. 40, in the assembled state of the suspension 12, the screw head of the screw 1204 is caught on the side of the washer 1205, and the shaft of the screw 1204 protrudes from the inner tube 1203 for screwing with the internal thread constructed on the vehicle body.
The limiting mechanism of the embodiment is mainly used for limiting the gasket 1205 to rotate relative to the inner sleeve 1203, so that when the suspension 12 is applied to connection between a vehicle body and a vehicle frame, the connection stability between the vehicle body and the vehicle frame can be improved. Referring to fig. 43, 44 and 45, based on the basic structure of the inner sleeve 1203 and the gasket 1205, the limiting mechanism of the present embodiment includes a limiting groove 12031 formed at an end of the inner sleeve 1203 close to the gasket 1205, and a limiting protrusion 12051 disposed on the gasket 1205 and embedded in the limiting groove 12031. In order to improve the insertion stability of the limiting protrusion 12051 in the limiting groove 12031 and further improve the limiting effect, as shown in fig. 44, the limiting groove 12031 of the present embodiment is formed on the inner wall of the inner tube 1203 in a concave manner along the radial direction of the inner tube 1203.
Based on the above structure, in order to prevent the structural strength of the inner tube 1203 from being reduced due to the formation of the stopper groove 12031, the inner diameter of the inner tube 1203 is gradually reduced toward the end close to the gasket 1205, so that the wall thickness of the end of the inner tube 1203 where the stopper groove 12031 is formed is made larger. In addition, in order to further reduce the influence of the arrangement of the limiting groove 12031 on the structural strength of the inner tube 1203, the limiting groove 12031 of the present embodiment is specifically configured as a right triangle groove as shown in fig. 44, and the arrangement is also convenient for the following limiting protrusion 12051 to be inserted into the limiting groove 12031. As shown in fig. 45, the gasket 1205 of the embodiment is configured into a circular ring shape as a whole, and for convenience of processing and manufacturing, the limiting protrusion 12051 is integrally formed by bending the gasket 1205 itself, and in addition, the position accuracy of the limiting protrusion 12051 on the gasket 1205 can be improved, so that the matching effect of the limiting protrusion 12051 and the limiting groove 12031 can be improved, and the limiting effect of the limiting mechanism can be improved. In addition, the pad 1205 is further provided with a fabrication hole 12052 for reducing weight. The process holes 12052 may be a plurality of holes formed on the gasket 1205, and the holes may be rectangular as shown in fig. 45, or may be circular, elliptical, or triangular.
In this embodiment, in order to further improve the limiting effect of the limiting mechanism, as shown in fig. 44, the limiting grooves 12031 are two grooves symmetrically arranged on the inner wall of the inner tube 1203. Correspondingly, the two limiting protrusions 12051 are symmetrically arranged on the gasket 1205. The number of the stopper grooves 12031 may be three, four, or five, or the like, which are provided at intervals in the circumferential direction of the inner tube 1203, instead of two, which are symmetrically provided. Accordingly, the limiting protrusions 12051 should also be constructed in plural on the gasket 1205 to fit into the limiting grooves 12031.
In addition, in order to further improve the using effect of the suspension 12, as shown in fig. 46, a washer 1206 sleeved on the screw 1204 is clamped between the screw head of the screw 1204 and the washer 1205, so that not only can the inner sleeve 1203 be prevented from being damaged when the screw 1204 is fastened, but also the washer 1206 can be pressed after the screw 1204 is fastened based on the elastic performance of the washer 1206, thereby improving the stability of the suspension 12 in connection between the vehicle body and the vehicle frame. Additionally, to prevent dirt, mud, etc. from entering the structure of the suspension 12, the spacer 1205 of this embodiment is larger in diameter than the outer sleeve 1201 arrangement as shown in FIG. 40.
When the suspension 12 of this embodiment is installed on a bracket of the suspension 12, the outer sleeve 1201 is press-fitted into the mounting hole 7023 of the vehicle frame by interference, the washer 1206 and the gasket 1205 are sequentially sleeved on the screw 1204, the screw 1204 is then inserted into the inner sleeve 1203, the limiting protrusion 12051 on the gasket 1205 is clamped into the limiting groove 12031 of the inner sleeve 1203, and finally the screw 1204 is screwed, so that the screw 1204 is screwed with a threaded hole on the vehicle body, and the connection between the vehicle frame and the vehicle body can be formed by the suspension 12.
The middle structure of the frame of the embodiment, as shown in fig. 1 and 47, includes longitudinal beams 1 disposed on both sides in the frame, and a cross beam structure connected between the longitudinal beams 1 on both sides, and the cross beam structure is configured to be composed of a power battery pack case 13 fixedly connected with the longitudinal beams 1 on both sides through a connecting portion; in addition, a plurality of suspension mounting brackets 8 are respectively arranged on the longitudinal beams 1 at two sides of the middle structure, and the suspension 12 is arranged in each suspension mounting bracket 8. Specifically, as shown in fig. 47, in order to reduce the bending moment applied to the vehicle in the frontal collision, the portions of the longitudinal beams 1 on both sides of the present embodiment, which are connected to the power battery pack case 13, have a straight middle beam body located in the middle, and curved end beam bodies connected to both ends of the straight middle beam body, respectively.
In addition, in order to facilitate the light weight design of the vehicle frame, as shown in fig. 48, the cross section of the longitudinal beam 1 of the present embodiment is in a square shape, and is composed of an upper plate body 101 and a lower plate body 102 which are fastened and connected by spot welding, and the thicknesses of the upper plate body 101 and the lower plate body 102 are both between 1.6 mm and 3.0 mm; by the arrangement, the whole weight of the longitudinal beam 1 can be effectively reduced, and the light weight design of the frame is facilitated; meanwhile, the upper plate body 101 and the lower plate body 102 are connected by spot welding, so that welding slag and welding man-hour can be reduced, and the total weight and the processing cost of the longitudinal beam 1 can be further reduced. In addition, in order to improve the structural strength of the side member 1, a reinforcing panel connected between the upper panel 101 and the lower panel 102 is provided inside the side member 1.
The structure of the power battery pack case 13 of the present embodiment is shown in fig. 46 and 49, in order to improve the connection effect between the power battery pack case 13 and the side members 1, both side edges of the power battery pack case 13 are disposed along the side members 1, and the power battery pack case 13 of the present embodiment is specifically configured in an octagonal shape based on the specific structure of the side members 1. Of course, when the structure of the longitudinal beam 1 is changed, the power battery pack shell 13 should be changed accordingly. The power battery pack case 13 mainly includes a bottom case 1301 having a receiving cavity, and a lid 1302 connected to the bottom case 1301 to close the receiving cavity, and a communication port communicating with the outside is provided on the bottom case 1301 or the lid 1302.
As shown in fig. 50 and 51, the bottom case 1301 of the present embodiment has a module placement area in which the battery module 13017 is installed, and a pipeline channel 13013 for arranging the wire harness 13018 and the cooling pipeline connected to the battery module 13017 is further disposed in the accommodating cavity, and the wire harness 13018 and the cooling pipeline are connected to the outside through the communication port.
In order to improve the service performance of the power battery pack, the module placing area is arranged in the middle of the accommodating cavity, and in addition, module placing areas for installing the module control module and the cooling control module are arranged on two sides of the module placing area. The wire harness 13018 and the cooling pipeline are respectively connected with the module control module and the cooling control module, and the module control module and the cooling control module are also connected with the outside through the communication ports.
In addition, based on that battery modules 13017 are usually a plurality of battery modules arranged in sequence along the length direction of the power battery pack, as shown in fig. 50 and 51, in the present embodiment, a plurality of partitions 13012 arranged along the width direction of the vehicle frame are arranged side by side in the module placement area, so that the module placement area is divided by the partitions 13012 into a plurality of module placement units 13011 for fixing the battery modules 13017. And the two ends of each partition 13012 are respectively connected with the two opposite side inner walls of the accommodating cavity, so that the partitions 13012 can improve the transverse strength and rigidity of the frame when the power battery pack shell 13 is arranged between the longitudinal beams 1 at the two sides, and the vehicle can have better side collision safety.
As shown in fig. 51, in order to improve the placing stability of battery module 13017 in module placing unit 13011, module fixing mechanism 13016 detachably fixed on partition 13012 is provided in module placing unit 13011, and the specific structure thereof is shown in fig. 52, where module fixing mechanism 13016 includes fixing plate 130161 disposed against partition 13012 and fixed on the top of partition 13012 by a third connecting member, and a pressing end configured to press and fix battery module 13017 is provided on the top of fixing plate 130161. In order to improve the abutting effect between the fixing plate 130161 and the partition 13012, the fixing plate 130161 is disposed along the partition 13012 and is configured to be a rectangular plate-shaped structure. In addition, in order to reduce the processing cost, the pressing end of the present embodiment is formed by a flange 130162 integrally formed on the top of the fixing plate 130161 and bent toward the side of the partition 13012 facing away from and abutting against the fixing plate.
In addition, in order to facilitate the arrangement of the third connecting member, a plurality of connecting lugs 130163 are formed at intervals on the other side of the top of the fixing plate 130161 with respect to the flange 130162, and through holes for the third connecting member to pass through are formed on each connecting lug 130163. At the same time, first screw holes are formed in the partition 13012 corresponding to the respective through holes. In this embodiment, in order to facilitate design and installation, the third connecting member may specifically adopt a bolt. Based on the above structure, when battery module 13017 is placed in module placement unit 13011, fixing plate 130161 is abutted against partition 13012 and inserted in module placement unit 13011 until flange 130162 abuts against battery module 13017, and then the bolt is fastened to first threaded hole in partition 13012, so that battery module 13017 can be positioned in module placement unit 13011.
As shown in fig. 50, 51 and 52, the pipeline channel 13013 of the present embodiment includes a channel bottom plate 240101 having a receiving groove and supported and fixed on the top of the partition 13012, and a plurality of pipeline fixing bases 13014 arranged at intervals along the extending direction of the channel bottom plate 240101, that is, along the length direction of the longitudinal beam 1, and the pipeline fixing bases 13014 are detachably fixed on the partition 13012 by fixing legs 13019 configured on the bottom of the pipeline fixing bases 13014. In order to save space, the structure of the line holder 13014 and the fixed legs 13019 of the present embodiment is shown in fig. 54, wherein the line holder 13014 is specifically configured as a flat rectangular structure, and a through hole for passing the wire harness 13018 is formed thereon.
As also shown in fig. 54, in order to improve the support stability, the fixing leg 13019 of the present embodiment is configured to be substantially "pi" shaped, and specifically includes a top plate abutting against the line fixing seat 13014, and two legs relatively attached to the bottom of the top plate and abutting against the top of the partition 13012, and each leg is formed with a through hole for connecting with the partition 13012. As shown in fig. 53, in order to fix the fixed leg 13019 to the partition 13012, a second screw hole is formed in the partition 13012 corresponding to the through hole, and by this means, the line fixing base 13014 can be fixed to the partition 13012 and the harness 13018 can be fixed to the inside of the power battery pack case 13 by screwing the second screw hole to the through hole after passing through the through hole via a fastener such as a bolt.
The cover 1302 is configured as shown in fig. 55, and the overall shape of the cover 1302 is adapted to the shape of the bottom case 1301, and a notch 3032 is formed at a top corner of the cover 1302, so that the wire harness 13018 and the cooling pipeline can extend out of the accommodating cavity through the notch 3032 to the outside for connection with other components. In addition, in order to realize the connection between the cover 1302 and the bottom case 1301, a plurality of grooves 6055 are formed on the cover 1302 at intervals corresponding to the partitions 13012, and mounting holes 7023 are formed at the bottom of the grooves 6055. By configuring the mounting hole 7023 in the groove 6055, a fastener such as a bolt may not be exposed outside the cover 1302, thereby improving the overall aesthetic property of the power battery pack case 13.
In this embodiment, as shown in fig. 56, a plurality of connecting brackets 130110 are detachably fixed on the top of the partition 13012 corresponding to the mounting holes 7023, and the cover 1302 is detachably fixed on the connecting brackets 130110 by fasteners passing through the mounting holes 7023. The specific structure of the connecting bracket 130110 of this embodiment is shown in fig. 57, and it includes a long strip-shaped main body 1301101, two mounting posts are formed on two ends of the main body 1301101, and a through hole for passing a fastener such as a bolt to be fastened and connected with the partition 13012 is formed in the middle of the main body 1301101, and a third threaded hole 1301102 is formed on each mounting post. With such an arrangement, the connecting bracket 130110 may be fixed on the top of the partition 13012 in advance, and when the cover 1302 is buckled on the bottom case 1301, the fixing member may pass through the mounting hole 7023 on the cover 1302 and then be screwed with the third threaded hole 1301102, so as to achieve the fixed connection between the cover 1302 and the bottom case 1301. For convenience of processing and manufacturing, the fixing member of the embodiment specifically adopts a bolt. In addition, in order to improve the sealing effect between the cover 1302 and the bottom case 1301, a gasket is interposed between the cover 1302 and the bottom case 1301.
As shown in fig. 50 and 51, the connecting portion specifically includes a plurality of fixing holes 13015 provided on the bottom case 1301 and surrounding the edge of the bottom case 1301, a connecting hole 7011 provided on the longitudinal beam 1 corresponding to each fixing hole 13015, and a bolt pair connected to the corresponding fixing hole 13015 and the connecting hole 7011. In order to improve the use effect, the fixing holes 13015 arranged close to the module placing area are respectively arranged corresponding to the end parts of the partition 13012, so that the transverse strength and the rigidity of the frame can be improved, meanwhile, the transmission effect of external force, particularly side impact force, to the vehicle longitudinal beam 1 can be improved, and the side impact safety of the electric vehicle can be improved.
The rear end structure of the vehicle frame of the present embodiment is as shown in fig. 58 and fig. 59, and mainly includes, in its overall structure, a rear shock absorber tower 15 assembly, a rear cross member 14, a rear impact beam 20 assembly, a rear suspension mounting assembly, and a rear motor mounting assembly, and a plurality of suspension mounting brackets 8 having the above-described suspensions 12 are also provided on the rear ends of the side members. Wherein the rear shock absorber tower 15 assembly comprises two rear shock absorber towers 15 arranged oppositely at the longitudinal beams 1 on both sides. The rear suspension mounting assemblies are two groups respectively arranged on the longitudinal beams 1 at two sides. Then the motor installation assembly includes two motor installing supports 9 that set up on the longeron 1 of both sides relatively, can constitute the connection between motor and two longerons 1 because of the installation of motor on two motor installing supports 9 from this to can make the motor play the effect of crossbeam.
Specifically, as also shown in fig. 58 and 59, the side member 1 of the present embodiment is divided into a front side member 103 and a rear side member 104 connected in series by the rear absorber tower 15 due to the connection of the rear absorber tower 15. The rear cross member 14 is connected specifically between the front side members 103 on both sides, and a rear reinforcement member is provided between the rear side members 104 on both sides and the rear cross member 14 in order to improve the structural strength of the vehicle frame. In order to further enhance the use effect, the rear cross member 14 of the present embodiment is configured in an "X" shape. In addition, in order to improve the use effect of the frame, especially the anti-collision, dustproof and waterproof effect, as shown in fig. 59, a rear fender 17 is fixedly connected to the bottom of the rear cross member 14.
The rear impact beam 20 assembly of the present embodiment is fixedly connected to the end portions of the side sills 1, and includes rear crush beams 605 respectively connected to the end portions of the side sills 1, and a rear impact beam 20 connected between the rear crush beams 605 on both sides. The rear crush beam 605 of the present embodiment specifically uses an energy-absorbing box, and the specific structure thereof can refer to the prior art. Of course, the rear crush beam 605 can be constructed in the same manner as the lower mounting bracket 604 described above, rather than using an energy-absorbing box.
As shown in fig. 60 to 63, the rear absorber tower 15 mainly includes, in its entire structure, a rear absorber mount 1501 connected in series between the front side member 103 and the rear side member 104, a rear absorber mount 1504 connected to the top of the rear absorber mount 1501, and an overhead stay 16 connected between one side of the rear absorber mount 1501 and the front side member 103.
Specifically, referring to fig. 64 and 65, the rear cushion 1501 of the present embodiment is formed by bending a sheet metal member, and a cross section thereof is particularly formed in a "U" shape, so that a cavity can be formed in the rear cushion 1501, and the structural strength of the rear cushion 1501 can be improved, thereby improving the load-bearing effect of the rear cushion. It should be noted that the cross section of the rear shock absorber mount 1501 of the present embodiment may be configured in a "C" shape, a semicircular shape, or other structures besides the "U" shape. Further, a semicircular hole 15011 is formed at the bottom end of the rear cushion support 1501, and a semicircular recess is formed in the front side member 103 corresponding to the semicircular hole 15011, and the recess and the semicircular hole 15011 form a half shaft passage 3011. In addition, in order to further improve the structural strength of the rear cushion mount 1501, a burring 130162 is formed at the edge thereof.
In addition, in order to improve the use effect, as shown in fig. 62, a rear shock absorber support reinforcing plate 1503 is arranged in the rear shock absorber support 1501, and the rear shock absorber support reinforcing plate 1503 is configured to be convex bulge-shaped, so that when the rear shock absorber support reinforcing plate 1503 is fixedly connected with the inner wall of the rear shock absorber support 1501, the rear shock absorber support reinforcing plate 1503 and the rear shock absorber support 1501 form a closed stress space, thereby improving the structural strength of the rear shock absorber tower 15 and further improving the support effect of the rear shock absorber.
The rear shock absorber mounting seat 1504 is constructed as shown in fig. 61 and 62, and is integrally formed as a truncated cone-shaped tubular structure, and has a shock absorber passing hole formed at the top thereof to communicate with the cavity, and a shock absorber mounting portion disposed at one side of the shock absorber passing hole. In addition, for convenience of manufacturing, the rear shock absorber mounting portion of the present embodiment is specifically a shock absorber mounting hole 3042 disposed on one side of the shock absorber via hole. Based on the structure of the rear shock absorber in the prior art, the shock absorber mounting holes 3042 of the present embodiment are specifically three ring shock absorber via holes arranged at intervals. It should be noted that, the shock absorber mounting portion of the present embodiment may be a nut fixedly connected to the shock absorber mounting seat, and a through hole is formed on the shock absorber mounting seat corresponding to the nut, and at this time, the fastener may sequentially pass through the rear shock absorber and the through hole and be screwed with the nut, so that the rear shock absorber may be mounted on the rear shock absorber mounting seat 1504.
The structure of the tower top support frame 16 of this embodiment is shown in fig. 63 and includes a receiving cavity defined by top, rear and side edges, wherein the top and rear edges are secured to the rear shock absorber mounts 1501 and the bottom ends of the rear and side edges are secured to the side rails 1. In addition, in order to improve the connection effect, the flanges 130162 are formed at the edges of the top edge, the rear edge and the side edges, and the tower top support frame 16 is fixedly connected with the rear shock absorber support 1501 and the longitudinal beam 1 through the flanges 130162. In addition, in order to improve the use effect, a mounting hole 7023 of the suspension 12 for accommodating the suspension 12 is formed on the top edge of the tower top support frame 16.
Based on the arrangement position of the rear shock absorber tower 15 on the longitudinal beam 1 and the structure thereof, as shown in fig. 61 and fig. 63, in this embodiment, the motor mounting brackets 9 on both sides are respectively fixedly connected to the tower top support frames 16 on the corresponding sides, so that the motor mounting brackets 9 and the longitudinal beam 1 are fixedly connected in an indirect manner. In order to improve the connection stability, the motor mounting bracket 9 of this embodiment is fixedly connected to the rear shock absorber support 1501 and the rear side of the tower top support frame 16. In addition, in order to improve the convenience of manufacturing, the motor mounting bracket 9 of the present embodiment is specifically formed by bending the motor mounting plate, and in order to improve the structural strength of the motor mounting bracket 9, a convex bulge is configured on the motor mounting plate.
As shown in fig. 58 and fig. 59, based on the rear suspension mounting assembly of this embodiment for mounting the five-link independent suspension, the rear suspension mounting assembly of this embodiment specifically includes a rear upper control arm mounting portion disposed in the cavity of the rear shock absorber support 1501, a rear upper swing arm mounting portion and a rear lower swing arm mounting portion disposed in the tower top support frame 16, and a rear lower control arm mounting portion and a toe arm mounting portion fixedly connected to the longitudinal beam 1.
As shown in fig. 59 and 62, the rear upper control arm mounting portion specifically includes a rear upper control arm mounting bracket 1502 fixedly connected in the rear shock absorber support 1501, and in order to improve structural strength, the rear upper control arm mounting bracket 1502 of this embodiment is specifically configured in an "L" shape and is arranged close to an inner wall of one side of the rear shock absorber support 1501, and control arm mounting holes 7023 are correspondingly formed in the inner wall of the side and the rear upper control arm mounting bracket 1502. In addition, in this embodiment, in order to facilitate the fixing between the rear upper control arm mounting bracket 1502 and the inner wall of the rear shock absorber support 1501, a flange 130162 is also configured at the edge of the rear upper control arm mounting bracket 1502, so that the flange 130162 can be fixed to the inner wall of the rear shock absorber support 1501 through a flange 130162.
As shown in fig. 59, the rear lower control arm mounting portion of the present embodiment is embodied as a rear lower control arm mounting bracket 18 fixedly attached to the front side member 103, and in order to improve the mounting strength, the rear lower control arm mounting bracket 18 is configured in a "U" shape, and a control arm mounting hole 7023 arranged through both sides is also configured thereon. As shown in fig. 59 and 62, the rear upper swing arm mounting portion and the rear lower swing arm mounting portion of the present embodiment are specifically the rear upper swing arm mounting bracket 22 and the rear lower swing arm mounting bracket 2 which are arranged up and down in the tower top support frame 16, and in order to improve the structural strength, the rear upper swing arm mounting bracket 22 and the rear lower swing arm mounting bracket 2 are also configured into a "U" shape, and are respectively provided with swing arm mounting holes 7023.
Based on the above overall description, in the electric vehicle frame of the embodiment, the two motor mounting brackets 9 are arranged on the longitudinal beams 1 on the two sides, so that the motor housing can function as a cross beam due to the mounting of the motor on the motor mounting brackets 9; in addition, the power battery pack shell 13 fixedly connected with the longitudinal beams 1 on the two sides forms a frame cross beam, so that the mounting requirement of the power battery pack shell 13 can be met, the arrangement of the existing frame cross beam can be omitted, the overall weight of the frame is reduced, the light weight design of a vehicle can be facilitated, and the electric vehicle frame has better structural strength and rigidity.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (36)

1. The utility model provides an electric automobile frame, includes longeron (1) of arranging both sides in the branch to and in both sides front end structure, middle part structure and the rear end structure that front portion, middle part and rear portion of longeron (1) were arranged respectively, its characterized in that:
the front end structure comprises a front shock absorber tower assembly, a water tank mounting assembly (5) with a mounting frame (501), a front cross beam close to the mounting frame (501) and connected between the longitudinal beams (1) on the two sides, a front anti-collision beam assembly fixedly connected to the end parts of the longitudinal beams (1) on the two sides, and front suspension mounting assemblies respectively arranged on the longitudinal beams (1) on the two sides;
the middle structure comprises a cross beam structure connected between the longitudinal beams (1) on the two sides, and the cross beam structure is formed by power battery pack shells (13) fixedly connected with the longitudinal beams (1) on the two sides through connecting parts;
the rear end structure comprises a rear shock absorber tower assembly, a rear cross beam (14) connected between the longitudinal beams (1) on the two sides, rear anti-collision beam assemblies fixedly connected to the end parts of the longitudinal beams (1) on the two sides, and rear suspension mounting assemblies respectively arranged on the longitudinal beams (1) on the two sides;
the electric automobile frame further comprises a plurality of suspension mounting brackets (8) respectively arranged on the longitudinal beams (1) on the two sides, a suspension (12) is arranged in each suspension mounting bracket (8), a motor mounting assembly with motor mounting brackets (9) oppositely arranged on the longitudinal beams (1) on the two sides is further arranged in the front end structure and the rear end structure, the motor mounting brackets (9) on the two sides form connection between a motor and the longitudinal beams (1) on the two sides, and a motor shell of the motor forms a cross beam connected between the longitudinal beams (1) on the two sides;
the front shock absorber tower assembly comprises two front shock absorber towers (3) which are oppositely arranged on the longitudinal beams (1) on two sides, each front shock absorber tower (3) comprises a shock absorber tower body, each shock absorber tower body is provided with a body support and a mounting support (304), wherein each body support is composed of a first main body (301) with a U-shaped cross section, a second main body (302) fixedly connected to the top end of the first main body (301), and the mounting support is covered and buckled on the top of the body support;
a force transmission structure with a crumple beam (605) is arranged between the mounting frame (501) and the longitudinal beam (1), the force transmission structure is further provided with the front shock absorber tower (3) connected with the other end of the crumple beam (605), one of the suspension mounting brackets (8) is arranged on the other side of the front shock absorber tower (3) opposite to the crumple beam (605), and a force transmission reinforcing bracket (306) is arranged in the front shock absorber tower (3) and corresponds to the mounting seats of the crumple beam (605) and the suspension (12) on the two sides;
the cross section of the force transmission reinforcing support (306) is configured to be provided with protruding portions (3061) and recessed portions (3062) which are alternately arranged, the protruding portions (3061) and the recessed portions (3062) are arranged in parallel, the protruding portions and the recessed portions extend along the length direction of the vehicle longitudinal beam (1), and a body support reinforcing plate (303) covering the force transmission reinforcing support (306) is fixedly connected to the opening of the first main body (301).
2. The electric vehicle frame of claim 1, wherein: the bottom of the mounting frame (501) is connected with the longitudinal beams (1) on two sides, and a water tank mounting point is arranged on the mounting frame (501); and the front suspension mounting assembly at least comprises a swing arm mounting part.
3. The electric vehicle frame of claim 2, wherein: and a front shock absorber reinforcing bracket (7) is connected between the tops of the front shock absorber towers (3) on the two sides.
4. The electric vehicle frame of claim 3, wherein: a through hole is formed between the first body (301) and the second body (302), a half shaft channel (3011) is formed at the bottom end of the first body (301), the mounting bracket (304) is fixedly connected with the first body (301) and the second body (302), and a damper through hole penetrating the through hole and a damper mounting portion located at one side of the damper through hole are formed on the mounting bracket (304).
5. The electric vehicle frame of claim 4, wherein: a body reinforcing support (305) is embedded in the body support, the body reinforcing support (305) is fixedly connected with the first main body (301) and the second main body (302) respectively, and reinforcing support through holes are formed in the body reinforcing support (305) corresponding to the shock absorber through holes.
6. The electric vehicle frame of claim 4, wherein: the body support reinforcing plate (303) extends along the height direction of the first main body (301), corresponds to the half-shaft channel (3011), and is provided with a half-shaft through hole (3031) on the body support reinforcing plate (303).
7. The electric vehicle frame of claim 4, wherein: the front shock absorber reinforcing bracket (7) comprises two connecting bodies (702) which are respectively arranged corresponding to the front shock absorber towers (3) on the two sides, and a connecting beam (701) which is detachably connected between the connecting bodies (702) on the two sides; each connector (702) is fixedly connected to the mounting bracket (304) on the corresponding side, and a connector through hole (7021) which is arranged to penetrate through the shock absorber through hole on the corresponding side is formed on each connector (702).
8. The electric vehicle frame of claim 2, wherein: the water tank installation assembly (5) further comprises two reinforcing beams which are arranged corresponding to the longitudinal beams (1) on the two sides respectively, one end of each reinforcing beam is connected to the middle of the top end of the installation frame (501), and the other end of each reinforcing beam is connected with the front shock absorber tower (3) arranged on the longitudinal beam (1) on the corresponding side; and a support beam (11) is respectively arranged at the outer side of each reinforcing beam, one end of each support beam (11) is connected to the end part of the mounting frame (501), and the other end of each support beam is connected with the front shock absorber tower (3) at the corresponding side.
9. The electric vehicle frame according to any one of claims 2 to 8, characterized in that: the front anti-collision beam assembly is fixedly connected with the longitudinal beams (1) on two sides through the mounting frame (501), and the front anti-collision beam assembly and the longitudinal beams (1) are located on two opposite sides of the mounting frame (501); and the front anti-collision beam assembly is provided with an upper anti-collision beam (601) and a lower anti-collision beam (603) which are arranged up and down, the upper anti-collision beam (601) and the lower anti-collision beam (603) are respectively connected onto the installation frame (501) through an upper installation support (602) and a lower installation support (604), the lower installation support (604) is arranged corresponding to the longitudinal beam (1), and the force transmission structure is arranged corresponding to the upper installation support (602).
10. The electric vehicle frame of claim 9, wherein: the upper mounting bracket (602) is an energy absorption box.
11. The electric vehicle frame of claim 9, wherein: the lower mounting bracket (604) comprises a connecting plate (6043) connected with a first connecting piece, and a connecting frame with one end fixedly connected with the connecting plate (6043), and the lower anti-collision beam (603) is connected to the other end of the connecting frame; and the link has a first support (6041) that is parallel to longeron (1) arranges, and be close to one end of connecting plate (6043) with first support (6041) link firmly, the other end for first support (6041) to second support (6042) that tip one side tilt-out of crashproof roof beam (603) set up down.
12. The electric vehicle frame of claim 9, wherein: one end of the crumple beam (605) is connected to the mounting frame (501) corresponding to the upper mounting bracket (602); one of the suspension mounting brackets (8) positioned on the other side of the front shock absorber tower (3) is respectively connected with the front shock absorber tower (3) and the longitudinal beam (1).
13. The electric vehicle frame of claim 12, wherein: lower mounting cavities (503) for accommodating lower mounting pieces (504) are formed in the mounting frame (501) corresponding to the longitudinal beams (1) on the two sides respectively, each longitudinal beam (1) is connected with the lower mounting piece (504) on the corresponding side, and each lower mounting piece (504) is connected with the lower anti-collision beam (603) through a first connecting piece arranged at the bottoms of the lower mounting pieces (504) and the lower mounting cavities (503) in a penetrating mode; and an upper mounting cavity (505) for accommodating an upper mounting piece (506) is formed above the lower mounting cavity (503) on two sides, each crumple beam (605) is connected with the upper mounting piece (506) on the corresponding side, and each upper mounting piece (506) is connected with the upper anti-collision beam (601) through a second connecting piece penetrating through the upper mounting piece (506) and the bottom of the upper mounting cavity (505).
14. The electric vehicle frame of claim 9, wherein: the collapse beam (605) comprises a beam body, wherein at least part of the cross section of the beam body in the length direction of the beam body is provided with polygonal hole bodies (6053), and the hole bodies (6053) are at least two connected in a row.
15. The electric vehicle frame of claim 14, wherein: the roof beam body comprises outer plate body (6051) and interior plate body (6052) that the lock links firmly together, and in outer plate body (6051) with it constructs recess (6055) to buckle respectively on interior plate body (6052), hole body (6053) by outer plate body (6051) with recess (6055) that interior plate body (6052) correspond to arrange enclose to close and form.
16. The electric vehicle frame of claim 2, wherein: the swing arm installation department including link firmly respectively in preceding lower swing arm installing support (4) on longeron (1) and back lower swing arm installing support (2), and in it has stabilizer bar installation position to integrate on preceding lower swing arm installing support (4).
17. The electric vehicle frame of claim 1, wherein: the motor mounting assembly is arranged in the front end structure, and the motor mounting bracket (9) is fixedly connected to one of the suspension mounting brackets (8).
18. The electric vehicle frame of claim 1, wherein: the power battery pack shell (13) comprises a bottom shell (1301) with an accommodating cavity, a cover body (1302) which forms connection with the bottom shell (1301) and covers the accommodating cavity, a module placing area for placing a battery module (13017) is at least arranged in the accommodating cavity, and a pipeline channel (13013) for arranging a wire harness (13018) and a cooling pipeline which are connected with the battery module (13017), wherein a plurality of partitions (13012) which are arranged along the width direction of the frame are arranged in the module placing area side by side, two ends of each partition (13012) are respectively connected with the inner walls of two opposite sides of the accommodating cavity, and the partition (13012) divides the module placing area into a plurality of module placing units (13011) for fixing the battery modules (13017), and a communication port for connecting the wiring harness (13018) and a cooling pipeline with the outside is arranged on the bottom case (1301) or the cover body (1302).
19. The electric vehicle frame of claim 18, wherein: the connecting portion comprises a plurality of fixing holes (13015) which are formed in the bottom shell (1301) and surround the edge of the bottom shell (1301), connecting holes (7011) which are formed in the longitudinal beam (1) corresponding to the fixing holes (13015), and bolt pairs which are connected and arranged in the corresponding fixing holes (13015) and the connecting holes (7011), and the fixing holes (13015) which are close to the module placing area are respectively arranged at the end portions corresponding to the partition walls (13012).
20. The electric vehicle frame of claim 18, wherein: the module placing area is positioned in the middle of the accommodating cavity, and module placing areas for placing the module control module and the cooling control module are arranged in the accommodating cavity on two sides of the module placing area; the wire harness (13018) and the cooling pipeline are respectively connected with the module control module and the cooling control module, and the module control module and the cooling control module are connected with the outside through the communication port.
21. The electric vehicle frame of claim 18, wherein: a module fixing mechanism (13016) detachably fixed on the partition (13012) is arranged in the module placing unit (13011), the module fixing mechanism (13016) is provided with a fixing plate (130161) which is arranged by being attached to the partition (13012) and is fixed to the top of the partition (13012) through a third connecting piece, and the top of the fixing plate (130161) is provided with a pressing end for pressing and fixing the battery module (13017).
22. The electric vehicle frame of claim 18, wherein: the pipeline channel (13013) comprises a channel bottom plate (240101) which is supported and fixed at the top of the partition (13012) and is provided with a receiving groove, and a plurality of pipeline fixing seats (13014) which are arranged at intervals along the extending direction of the channel bottom plate (240101), and the pipeline fixing seats (13014) are detachably fixed on the partition (13012) through fixing legs (13019) constructed at the bottom of the pipeline fixing seats.
23. The electric vehicle frame of claim 18, wherein: a plurality of connecting brackets (130110) are detachably fixed on the top of the partition (13012), the cover body (1302) is detachably fixed on the connecting brackets (130110) by fixing pieces arranged by penetrating through the cover body (1302), and a sealing gasket is arranged between the cover body (1302) and the bottom shell (1301).
24. The electric vehicle frame of claim 18, wherein: battery modules (13017) are fixedly placed in each module placing unit (13011), a wire harness (13018) and a cooling pipeline which are connected with a power supply end and a cooling unit in each battery module (13017) are arranged in the accommodating cavity, a module control module and a cooling control module are arranged in the accommodating cavity, the wire harness (13018) and the cooling pipeline are respectively connected with the module control module and the cooling control module, and the module control module and the cooling control module are connected with the outside through the communication ports on the cover body (1302).
25. The electric vehicle frame of any one of claims 18 to 24, wherein: the parts of the longitudinal beams (1) on the two sides, which are connected with the power battery pack shell (13), are provided with a straight middle beam body positioned in the middle and bent end beam bodies respectively connected with the two ends of the straight middle beam body; the two side edges of the power battery pack shell (13) are arranged along the longitudinal beam (1).
26. The electric vehicle frame of claim 1, wherein: the longitudinal beams (1) are divided into front longitudinal beams (103) and rear longitudinal beams (104) connected in series by the rear shock absorber tower (15) due to the connection of the rear shock absorber tower (15).
27. The electric vehicle frame of claim 26, wherein: the rear shock absorber tower (15) comprises a rear shock absorber support (1501), a rear shock absorber mounting seat (1504) connected to the top of the rear shock absorber support (1501), and a tower top support frame (16) connected to one side of the rear shock absorber support (1501); a shock absorber through hole is formed in the rear shock absorber mounting seat (1504), and a shock absorber mounting part is arranged on one side of the shock absorber through hole; the rear shock absorber support (1501) is connected in series between the front longitudinal beam (103) and the rear longitudinal beam (104), the tower top support frame (16) is connected between the front longitudinal beam (103) and one side of the rear shock absorber support, and a half-shaft channel (3011) is formed between the bottom of the rear shock absorber support (1501) and the front longitudinal beam (103).
28. The electric vehicle frame of claim 27, wherein: a rear shock absorber support reinforcing plate (1503) is arranged in the rear shock absorber support (1501); the rear suspension mounting assembly comprises a rear upper control arm mounting part arranged in the rear shock absorber support (1501), and a rear upper swing arm mounting part and a rear lower swing arm mounting part arranged in the tower top support frame (16).
29. The electric vehicle frame of claim 28, wherein: the rear upper control arm mounting part comprises a rear upper control arm mounting support (1502) fixedly connected in the rear shock absorber support (1501), the rear upper control arm mounting support (1502) is arranged close to the inner wall of one side of the rear shock absorber support (1501), and control arm mounting holes are correspondingly formed in the rear upper control arm mounting support (1502) and the inner wall of the side; the swing arm installation department is gone up in the back with after the swing arm installation department arranges for upper and lower in after in swing arm installing support (22) and after swing arm installing support (2) down in top of the tower support frame (16), and in be equipped with the swing arm mounting hole on after go up swing arm installing support (22) and after swing arm installing support (2) respectively.
30. The electric vehicle frame of claim 27, wherein: in each suspension mounting bracket (8) on two sides, one suspension mounting bracket (8) is composed of the tower top supporting frame (16), and the suspension (12) is supported on the top of the tower top supporting frame (16).
31. The electric vehicle frame of claim 27, wherein: the rear end structure is internally provided with the motor mounting assembly, and the motor mounting brackets (9) on two sides are respectively and fixedly connected to the tower top support frame (16) on the corresponding side.
32. The electric vehicle frame of any one of claims 26 to 31, wherein: the rear cross beam (14) is connected between the front longitudinal beams (103) on two sides, and a rear reinforcing beam is arranged between the rear longitudinal beams (104) on two sides and the rear cross beam (14); the rear anti-collision beam assembly comprises rear collapse beams respectively connected to the end parts of the rear longitudinal beams (104) on the two sides, and rear anti-collision beams (20) connected between the rear collapse beams on the two sides.
33. The electric vehicle frame of claim 1, wherein: the suspension (12) comprises an outer sleeve (1201) pressed in the suspension mounting bracket (8) and an inner sleeve (1203) arranged in the outer sleeve (1201) in a penetrating mode, the outer sleeve (1201) and the inner sleeve (1203) are fixedly connected together through a rubber bushing (1202) arranged between the outer sleeve and the inner sleeve, and two ends of the inner sleeve (1203) respectively extend out of the outer sleeve (1201) to be arranged; the device is characterized by further comprising a gasket (1205) buckled at one end of the inner sleeve (1203), and a screw (1204) arranged through the gasket (1205) and the inner sleeve (1203), wherein the screw head of the screw (1204) is clamped at one side of the gasket (1205), the rod body of the screw (1204) extends out of the inner sleeve (1203), and a limiting mechanism for limiting the gasket (1205) to rotate relative to the inner sleeve (1203) is arranged between the gasket (1205) and the inner sleeve (1203).
34. The electric vehicle frame of claim 33, wherein: the limiting mechanism comprises a limiting groove (12031) formed in one end, close to the gasket (1205), of the inner sleeve (1203), and a limiting protrusion (12051) arranged on the gasket (1205) and embedded in the limiting groove (12031); and along to being close to the one end of gasket (1205), the internal diameter of interior sleeve pipe (1203) sets up for dwindling, spacing groove (12031) is along the radial indent shaping of interior sleeve pipe (1203) on the inner wall of interior sleeve pipe (1203).
35. The electric vehicle frame of claim 1, wherein: the cross section of the longitudinal beam (1) is in a square shape and is composed of an upper plate body (101) and a lower plate body (102) which are buckled with each other and connected in a spot welding mode, the thickness of the upper plate body (101) and the thickness of the lower plate body (102) are 1.6-3.0mm, and a reinforcing plate body connected between the upper plate body (101) and the lower plate body (102) is arranged inside the longitudinal beam (1) body.
36. The electric vehicle frame of claim 1, wherein: a bottom guard plate (10) is connected between the longitudinal beams (1) on two sides adjacent to the front cross beam, and a rear guard plate (17) is fixedly connected to the rear cross beam (14).
CN201811645879.XA 2018-12-30 2018-12-30 Electric automobile frame Active CN111391922B (en)

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CN116406338A (en) * 2021-11-04 2023-07-07 宁德时代新能源科技股份有限公司 Longitudinal beam assembly and automobile chassis
CN115027557B (en) * 2021-11-08 2024-04-02 长城汽车股份有限公司 Front bracket, chassis and electric automobile

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