CN106394685A

CN106394685A - Anti-collision system of chassis assembly of electric vehicle

Info

Publication number: CN106394685A
Application number: CN201611040471.0A
Authority: CN
Inventors: 王祖光; 钟巍
Original assignee: Hangzhou Hengyuan Automobile Technology Co Ltd
Current assignee: Hangzhou Hengyuan Automobile Technology Co Ltd
Priority date: 2016-11-12
Filing date: 2016-11-12
Publication date: 2017-02-15
Anticipated expiration: 2036-11-12
Also published as: CN106394685B

Abstract

The invention relates to an anti-collision system of a chassis assembly of an electric vehicle. The anti-collision system is composed of a front end chassis subsystem, a middle end chassis subsystem and a rear end chassis subsystem. The front end chassis subsystem comprises a polygonal truss, front energy absorption boxes, a front anti-collision beam, longitudinal beam extension plates and a front buffer assembly. The middle end chassis subsystem comprises a power stereoscopic case shell, a battery pack, longitudinal beams, longitudinal anti-collision beams and longitudinal buffer assemblies. The rear end chassis subsystem comprises a rear anti-collision beam, a rear energy absorption box, a truss frame, a buffer spring, buffer shafts and a rear buffer assembly arranged between the rear anti-collision beam and the truss frame. One end of the stereoscopic case shell is connected with the polytonal truss, and the other end of the stereoscopic case shell is connected with the truss frame. One ends of the longitudinal anti-collision beams are connected with the front buffer assembly, and the other ends of the longitudinal anti-collision beams are connected with the rear buffer assembly. Advantages of three energy absorption areas are reflected on the basis of multiple force transferring paths after collision of a vehicle body, collision energy can be reasonably and effectively buffered, absorbed and transferred, people in the vehicle can be better protected, and the safety of the people in the vehicle is better guaranteed after collision occurs.

Description

Electric automobile chassis assembly CAS

Technical field

A kind of the present invention relates to automotive field, more specifically, it relates to electric automobile chassis assembly CAS.

Background technology

Automobile chassis group is mainly made up of power train, running gear, steering system and braking system four part, plays supporting, installs Automobile engine and its assembly of each part, shaped automotive moulded and receiving again is clashed into play and supports and buffering Effect, body lightening has become study hotspot, and especially to electric automobile, light-weighted meaning is bigger, to light-weighted requirement Higher, in order to reach significant light weight effect, need upper searching from more directions to be newly suitable for scheme.

Traditional automobile chassis, great majority are middle column type or rectangular frame type, the China of Publication No. CN104494702A Patent discloses a kind of pure electric automobile chassis system of employing lightweight passenger-carrying chassis structure, if including two longitudinal girders and Dry crossbeam, some crossbeams are distributed in differing heights aspect and the different longitudinal position of two longitudinal girders, some crossbeam joggles in Article two, longitudinal girder forms double longeron multilayer soles of overall stress；The front portion of double longeron multilayer soles is connected with propons Frame, front axle bracket is fixed by two longitudinal girders；The rear portion of double longeron multilayer soles is connected with rear axle stand；Rear axle stand leads to Cross two longitudinal girders to be fixed；Front axle bracket is connected with front axle assy, and rear axle stand is connected with rear axle assy, double longeron multi-layered soles Plate rail is provided with drive assembly and energy assembly.

By to longitudinal girder and crossbeam joggle, forming double longeron multilayer soles so that forward and backward crane span structure passes through two respectively Bar longitudinal girder is fixed, and battery and motor are positioned over chassis both sides；Although combine overall stress type body structure and The advantage of double longeron body structures, when automobile is clashed into, reaches vehicle front by longeron and front axle bracket in the program Anticollision acts on, and due to anticollision performance and the limited strength of centre-pillar structure or rectangle mount structure, chassis are being impacted Performance substantially reduces, and simultaneously overall distribution inequality leads to that the center of gravity of car load is higher, and car load is unstable, when clashing, to taking advantage of The protection of member is inadequate, thus affecting the driving safety performance of burst accident during traveling.

Content of the invention

In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of vehicle anti-collision performance more preferably, travel Safer electric automobile chassis assembly CAS.

For achieving the above object, the invention provides following technical scheme：

A kind of electric automobile chassis assembly CAS, by leading chassis subsystem, middle-end chassis subsystem and rear end chassis System is constituted；Described leading chassis subsystem includes into the polygonal truss that the mode of subsiding arranges, is arranged on polygonal truss Front energy-absorption box and the front anti-collision beam being connected with front energy-absorption box, described polygonal truss be divided into the upper strata being sequentially connected and under Layer, described upper strata is included the enging cabin being connected with polygonal truss and is connected with enging cabin and in outstanding tower-like shape setting Cover plate, described lower floor includes the longeron extension board being connected with longeron, and described longeron extension board passes through front energy-absorption box and front anti-collision beam Connect, described front anti-collision beam is connected with enging cabin, Buffer Unit before being provided between longeron extension board described in two；Described Middle-end chassis subsystem includes power battery pack, is used for installing power battery pack and being in same level with power battery pack Three-dimensional case shell and the longeron being arranged at three-dimensional case shell both sides, described longeron is connected with the vertical anticollision of domed shape setting Beam, is provided with connecting rod at the two ends of described vertical collision prevention girders, is fixedly installed sleeve pipe on described longeron, connecting rod described in two One end may be contained within sleeve pipe and be connected with cannula slide, and the end of connecting rod described in two is interconnected by extension spring phase Connect, be additionally provided with the vertical Buffer Unit for buffering between described vertical collision prevention girders and longeron；Described rear end chassis subsystem bag Include the truss frame that the rear energy-absorption box that one end is connected with back buffer beam is connected with the rear energy-absorption box other end, be arranged at truss inframe and Buffer spring and the buffer shaft being arranged at the buffer spring other end that one end is connected with truss frame, buffer shaft described in two with described Truss frame triangularity shape is arranged, and buffer shaft described in two connects respectively at two longerons, and collision prevention girders and truss frame in the rear Between be additionally provided with for buffering back buffer assembly；Described solid case shell one end is connected with described polygonal truss, the other end Be connected with described truss frame, above described solid case shell, be provided with occupant's framework, described occupant's framework and back buffer beam it Between connected by pilot beam, pilot beam described in two is symmetricly set on back buffer beam, and described vertical collision prevention girders one end is front slow with described Rush assembly connection, the other end is connected with described back buffer assembly.

It is arranged such, chassis is divided into leading chassis subsystem, middle-end chassis subsystem and rear end chassis subsystem three Part, wherein, leading chassis subsystem is set to polygonal truss structure, is built by steel, is hung thereon, is supported with convenient Various equipment, such as front-wheel and steering；Polygonal truss in front terminal chassis system is divided into upper and lower two-layer, by front The Path of Force Transfer of collision is separately transmitted；Head-on crash Path of Force Transfer upper strata is made up of parts such as enging cabin and cover plates, absorbs Collision energy that part transmits from front portion simultaneously carries out dispersion its complementary energy to longeron and front wall and its corresponding buttress brace and passes Pass；Lower floor is mainly made up of longeron extension board and front Buffer Unit, also includes front anti-collision beam and energy-absorption box etc. simultaneously, is main The Path of Force Transfer wanted；The collision energy receiving is carried out by left and right point by front anti-collision beam, front energy-absorption box and front Buffer Unit Stream and initial absorption, and by them, energy is disperseed transmission toward longeron extension board, threshold, centre gangway etc., when reaching shock The dissipation of most of power and buffering；Leading chassis are rigid structure simultaneously, energy-absorption box before simultaneously arranging on polygonal truss And front anti-collision beam, when automotive front is clashed, inhaled by deformation as much as possible using tough energy-absorbing material Receive because clashing into the huge energy producing, front anti-collision beam can bear substantial amounts of shock and damage；Passed with front end elevational collision multilayer The basis of power path, the advantage to embody front end energy-absorbing area for the purpose of setting head-on crash multilayer Path of Force Transfer, enable energy conjunction Reason effectively absorbs and transmits；It is carried out continuously left and right using the stress in structure to shunt and the longeron biography backward by energy simultaneously Pass, in leading chassis subsystem, polygonal truss subsides, absorb simultaneously and clash into kinetic energy；Greatly carried by the corresponding cooperation of two-layer The crashworthiness of high front terminal chassis system, thus protect the sub- chassis in middle part, occupant thereon and its interior power battery pack.

Accommodate, support by three-dimensional case shell in the subsystem of middle-end chassis, the whole power battery pack of fixation are so that the bottom of at Outside disk, battery no longer accounts for any volume, thus save space；Three-dimensional case shell and its internal power battery pack are constituted simultaneously One entirety, removes outside connection member outside three-dimensional case shell, no longer has extra evagination, limb angle and other burden, by three-dimensional case Shell is located at same level with power battery pack, makes the center of gravity of car load lower, more stable；The top of three-dimensional case shell is flat for one simultaneously Face, the convenient various structures of any arrangement and equipment, any its position of regulation on this plane, make the entire vehicle design of new car more just Profit, and make subsequent upgrade remodeling from now on more convenient；Rigidity solid tank shell, intensity highest, than leading chassis subsystem and Rear end chassis subsystem intensity is higher, and it builds material is aluminium, and to mitigate weight, occupant's framework is located on the sub- chassis in middle part, The security performance of effective protection occupant, power battery pack is located within the sub- chassis in middle part, and in-car is effectively ensured after receiving shock Safety and stability performance after shock；The longeron in outside is for the overall construction intensity in the middle part of connecting and main before and after connection Connecting portion, has the effect improving overall construction intensity, and the longeron of both sides plays good support and stable effect simultaneously；When When the side of car body is clashed into, first impact is acted in vertical collision prevention girders, the vertical anticollision beam stress of domed shape produces shape Become, vertical collision prevention girders extend to two ends, so that two ends is respectively acting on forward and backward energy-absorption box, by energy-absorption box by most of impact Absorbed and split-up；The connecting rod being simultaneously arranged in vertical collision prevention girders is in the generation sliding sleeve on longeron Nei, Extension spring stress stretches, absorbable portion of energy；Towards during the generation deformation of longeron direction, vertical collision prevention girders act on vertical collision prevention girders simultaneously On vertical Buffer Unit, row buffering is entered to the impact in vertical collision prevention girders again by vertical Buffer Unit；Vertical by will act on Impact in collision prevention girders carries out the dispersion of multiple directions, acts on and carry out energy-absorbing on corresponding energy-absorption box and indulge slow accordingly Rush the enterprising row buffering of assembly and dispersion, the impact of vehicle side is carried out multi-direction reduction and multiple buffering；By vehicle side Hold the basis as Path of Force Transfer for the structure of passive anticollision, by vertical Buffer Unit and corresponding structure annexation, make portion The energy clashing into is divided to be dispersed to all angles of occupant's framework to multiple directions by corresponding annexation, simultaneously by vertical slow Rush assembly to be absorbed part impact and cached the effect to reach buffering；Vehicle side is made to have good structure strong Degree and the effect preferably reaching shock buffering when being knocked；Pass through in design to avoid it may happen that unfavorable to occupant The relatively low collision deceleration of dangerous deformations, the intrusion to driving cabin that minimizing rearward collision leads to and holding, is ensured with this The safety of occupant.

Rear end chassis subsystem, including the truss frame of the steel structure of high intensity and rigidity, thus convenient suspension above, Support various equipment, such as trailing wheel；When automobile suffers from the fierce collision come from rear portion, back buffer beam absorbs shock kinetic energy and passes Deliver to rear energy-absorption box, back buffer assembly plays good cushioning effect using the shock-absorbing capacity of itself simultaneously, absorb part and clash into Energy, cache most of energy simultaneously；When truss frame is when subsiding, the energy that part is clashed into is passed through multiple directions by pilot beam It is dispersed to all angles of occupant's framework, reaches the effect of buffering, after truss frame subsides to a certain extent, back buffer beam is depressed into The effect of buffer spring enterprising row buffering decompression；The buffer spring other end is by the buffer shaft with truss shaped as frame triangularity shape even Connect, using the stability of triangle, on the one hand can improve the stability between buffer spring and truss during shock, improve Bonding strength between truss frame and buffer spring, reach more preferable protection middle-end chassis subsystem and occupant thereon and On the other hand the impact being subject to and is dispersed to multiple directions, reaches the effect of alleviation by its interior power battery pack；With vehicle Based on the buffer structure Path of Force Transfer of the passive collision in rear end, setting rear end collision multilayer buffers the purpose of Path of Force Transfer to embody The advantage in three energy-absorbing areas, enables energy rationally and effectively to absorb and to transmit；During shock, rear end chassis subsystem subsides, accordingly The effect absorbing impact energy is reached on back buffer assembly and attachment structure so that being located at the occupant on middle terminal chassis system With within battery preferably protected；Pass through in design to avoid the dangerous deformations it may happen that unfavorable to occupant simultaneously, Reduce the intrusion to driving cabin that leads to of rearward collision and keep relatively low collision deceleration, the peace of occupant is ensured with this Entirely.

By being respectively provided with corresponding Buffer Unit and corresponding attachment structure in three systems on vehicle body, make car body By can well impact be disperseed when clashing into, so that the personnel in occupant's framework are protected well, to pass through Increase the design and installation structure of car body, to improve the crashworthiness to car body during shock, thus improving passengers inside the car during shock Security performance, makes vehicle integrally have good structural strength and preferably reach the effect clashing into buffering when being knocked, By positioned at the occupant on middle-end body and within battery preferably protected, travel safer.

Arrange further：Described front Buffer Unit includes first-level buffer area and Secondary buffer, and described front anti-collision beam is towards many One end of side shape truss is in that isosceles trapezoid shape is arranged, and described first-level buffer area includes and the neat setting in the waist Liangping of front anti-collision beam First pilot beam and the first energy-absorption box for buffering, described first pilot beam passes through the company of the first energy-absorption box and front anti-collision beam Connect, and the first pilot beam is respectively at the two ends of the first energy-absorption box and the arrangement that misplaces with the waist rail of front anti-collision beam；Described second delays Rush area include the second pilot beam of setting concordant with longeron extension board and two ends respectively with the second pilot beam and longeron extension board The second energy-absorption box that dislocation connects, described first pilot beam and the second pilot beam are fixedly connected.

It is arranged such, when vehicle is clashed into, leading chassis subsystem is pressurized, be wherein in the first buffering on middle level Area's compressive deformation, by the front anti-collision beam arranging in isosceles trapezoid shape, after being under pressure, two waists of front anti-collision beam inwardly extrude, Again the impact that front anti-collision beam passes over is absorbed by the first energy-absorption box, when the first energy-absorption box stress is excessive and impaired, by In the first pilot beam concordant with the waist rail of front anti-collision beam and misplace arrangement, make front end collision prevention girders be on the first pilot beam slide, It is concordant setting plus the second pilot beam and longeron, there is angle with the first pilot beam, so that the waist of front anti-collision beam both sides is in Frictional force on first pilot beam increases, and improves the effect of buffering effect；Front anti-collision beam upper bottom edge and the first pilot beam phase afterwards Conflict, now front anti-collision beam reaches the effect of buffering together with the first buffering establishment, and the second energy-absorption box is mainly to undertake postorder Clash into the effect of pressure, after the second energy-absorption box is impaired, front anti-collision beam and the first pilot beam, the second pilot beam are in longeron and extend Slide on plate, the front energy-absorption box being now arranged on longeron is mainly to absorb the effect clashed into, and longeron is main support and divides Scattered impact undertake part；By arranging multiple buffering area, connected according to mutual structure between buffering area, improve front end bottom The cushion bumper performance of disc subsystem and multiple impact performance, individually can be carried out more to it after certain buffering area is impaired simultaneously Change, effectively save the effect of maintenance cost.

Arrange further：Described first pilot beam is arranged at the inside side of front anti-collision beam, described second pilot beam setting In the side that longeron extension board is outside, described longeron extension board is fixedly connected with the two ends of the 3rd energy-absorption box respectively with longeron, and Longeron is arranged at the inner side of longeron extension board.

It is arranged such, when the first energy-absorption box stress is excessive and impaired, due to the waist rail of the first pilot beam and front anti-collision beam Concordantly, add that the second pilot beam is concordant setting with longeron, there is angle between the first pilot beam and the second pilot beam, before making End collision prevention girders are in slides outside the first pilot beam, and the waist of front anti-collision beam both sides is in the lasting slip of the first pilot beam to reach increasing The effect of big frictional force, improves the effect of buffering effect, and front anti-collision beam undertakes resistance buffering together with the first Buffer Unit simultaneously Effect；With should the second energy-absorption box impaired after, front anti-collision beam and the first pilot beam, the second pilot beam are in outside longeron extension board Slide, now front anti-collision beam, the first Buffer Unit, the second Buffer Unit undertake the follow-up effect clashed into together；Multiple buffering groups The effect that before improving vehicle, the multiple impact of disconnected chassis system buffers of the section of being equipped with of part；On the one hand can reduce beam impaired after The destruction of phase middle-end chassis subsystem internal, on the other hand because corresponding inclination angle is arranged, makes the second pilot beam be in longeron and prolongs Stretch the effect to reach increasing friction force outside plate, as long as the front energy-absorption box being now arranged on longeron is to absorb the work clashing into With.

Arrange further：Described vertical Buffer Unit includes arranging in hollow form and one end is provided with the housing of opening, setting In housing and the compression spring that is fixedly connected with the inwall of housing of one end and be arranged at the compression spring other end and by pressure The contracting spring baffle plate inconsistent with the opening of housing, the other end of described housing is connected with longeron, and described baffle plate setting is in housing Interior and with housing inwall is slidably connected, and described baffle plate is by the slip for buffering being arranged between baffle plate and vertical collision prevention girders Assembly is connected with longeron.

It is arranged such, when vertical collision prevention girders produce deformation, and when acting on vertical Buffer Unit, vertical collision prevention girders are passed through to be arranged at Slide assemblies on the openend of housing remake for baffle plate, and by conflicting with baffle plate, baffle plate is disengaged with opening, baffle plate And then be in housing and enter line slip, so that compression spring is in housing and be compressed, reach vertical Buffer Unit and enter row buffering Effect.

Arrange further：Described slide assemblies include conflict spring, the slide block being arranged at conflict both ends of the spring and setting Contiguous block on slide block end face, is conflicted with baffle plate by the vertical collision prevention girders being arranged on contiguous block in described slide block other end Connect, the opening of described housing is in diminishing prism-frustum-shaped setting, the end face of described slide block and conflict spring towards in housing Conflict and connect, other end obliquely arranges, and be in and be slidably connected with housing on the end face of opening.

It is arranged such, when vertical collision prevention girders produce deformation, the active force in vertical collision prevention girders acts on slide block by contiguous block On, because the opening of housing and the end face of shoe contact are inclined-plane, when the power of contiguous block one end becomes larger, two slide blocks are gradually Close, and be in the openend of housing and gradually slide into housing, the conflict spring-compressed between two slide blocks simultaneously, by conflicting The compression of spring can reach the effect absorbing part impact, reaches the effect of buffering；Rear slider by inconsistent with baffle plate, Make baffle plate be in housing to slide, promote compression spring to be compressed the effect of energy-absorbing simultaneously, reach the mesh of multiple buffering energy-absorbing , improve the effect of the overall slow energy-absorbing of buffering of vertical Buffer Unit.

Arrange further：Projection is provided with described truss frame, described raised end face pass through rear energy-absorption box with after Collision prevention girders connect, and an end of described buffer spring is arranged in the depression that raised other end is formed and is fixed even with truss frame Connect, the other end of buffer spring is fixedly connected with two interconnected buffer shaft, described back buffer assembly is symmetricly set in projection Both sides.

It is arranged such, when back buffer beam receives shock, back buffer beam is pressurized, simultaneously act on rear energy-absorption box and both sides Back buffer assembly on, absorbed using rear energy-absorption box and back buffer assembly and part impact during buffering collision of closed, simultaneously Raised setting, one end of its sunken inside can be easy to and buffer spring clamping, play fixing slow when playing buffer spring stress Rush the effect of spring, raised one end is used for energy-absorption box after support, and the impact that rear energy-absorption box is passed over is dispersed to truss The both sides of frame, reduce the problem concentrating stress when vehicle rear-side is clashed into.

Arrange further：Described back buffer assembly includes support shaft and is vertically arranged energy-absorbing spring with Impact direction, and two Between described support shaft and back buffer beam, triangularity shape is arranged, and the connection end of two support shafts is connected with truss frame, the other end It is fixedly connected with back buffer beam, described energy-absorbing spring is arranged on the center line of triangle, and the two ends company with support shaft respectively Connect end to be fixedly connected with back buffer beam.

Be arranged such, when back buffer beam is clashed into, impact suffered by back buffer beam positive in back buffer assembly, Now support shaft becomes triangular shape shape to arrange with back buffer beam, can improve the stability of strutting system of back buffer assembly using Triangle Principle Can, simultaneously when energy-absorbing spring is pressurized, support axial both sides to launch, for increasing the effect of lifting surface area, contribute to auxiliary and inhale Supporting role during energy spring-compressed；Wherein one side of support shaft is connected with rear energy-absorption box simultaneously, can increase lifting surface area, carry High crashworthiness.

Arrange further：Described rear energy-absorption box includes the body of the corrugated setting of watchcase, is arranged at intrinsic spring Seat and be arranged at outer coil spring in spring base both ends of the surface, described in two, outer coil spring is connected with the madial wall of body respectively, Limited block is provided with the madial wall of described body, limited block described in two forms the spacing draw-in groove for garter spring seat, and limits Position block is symmetricly set on the madial wall of body two opposition.

It is arranged such, undulatory body is easy to the compression in rear energy-absorption box stress, simultaneously can be by part force dispersion To the effect of all directions, and intrinsic outer coil spring is when body produces deformation, and the outer coil spring of front end carries out buffering pressure The effect of contracting, the spacing draw-in groove that limited block is formed plays the effect of the cylindrical spring stress of support front to spring base, works as limited block To after the limit, the cylindrical spring stress of rear end compresses stress, continues to produce, to clashing into, the effect buffering；Make rear energy-absorption box more preferable The effect that back buffer beam is repeatedly buffered, improves rear vehicle end crashworthiness.

Arrange further：Angled seat is provided with spring base, angle spring is provided with described angled seat, described angle spring Two ends are connected with body and angled seat respectively, and multiple described angles spring is all well-balanced to be arranged on the periphery of outer coil spring, and all with Impact direction is vertically arranged.

It is arranged such, is symmetrical arranged multiple angles spring by the both sides in outer coil spring, pass through angled seat by angle spring simultaneously Stable is installed between body and spring base, and angle spring is all vertically arranged with Impact direction, the energy-absorbing of energy-absorption box after raising Cushioning effect.

Arrange further：The structural form of described solid case shell is using any one in oval case shell, polygon case shell Kind, in the dividing plate being internally provided with for reinforcing three-dimensional case shell and fixing power battery pack of described solid case shell, some described Dividing plate transverse and longitudinal interleaved is arranged, and is provided with the supporting plate for support power battery pack in the bottom of three-dimensional case shell.

It is arranged such, oval case shell design, on the one hand when vehicle travels, arc-shaped edges also mitigate chassis in motion, car Resistance produced by body chassis, improves road holding；Another face to face, vehicle when being clashed into, because ellipse is being subject to During power, the angle tangent line between every section is in different angles, after stress, impact is scattered in all directions, mitigates the office on chassis Portion's stress；Three-dimensional case shell is arranged polygon case shell, increases respective outer side edges intensity on connecting for each side, in stress, lead to Cross the angle existing between adjacent edge, the impact being subject to is dispersed to all directions, reach mitigation but during side stress Concentration force-bearing situation, improve and be located on the sub- chassis in middle part the security performance of occupant and be located at dynamic within the sub- chassis in middle part Power battery pack；Increase shelf or dividing plate in the middle of three-dimensional case shell, on the one hand play and reinforce the overall structural strength of three-dimensional case shell Effect, on the other hand also allows for assisting fixing and management battery pack effect, improves between three-dimensional casing and power battery pack Layout；The three-dimensional case shell of erection truss can improve the shock-absorbing capacity during shock of middle-end chassis system, in three-dimensional case shell Bottom increase supporting plate, to hold battery, improve the stability of battery component.

By adopting technique scheme, hinge structure of the present invention is compared：By equal in three systems of car body Corresponding Buffer Unit and corresponding attachment structure are set, increase the design and installation structure of car body, to improve during shock to car The crashworthiness of body, enables car body by impact is disperseed when clashing into personnel so that in occupant's framework well Being protected well, thus improving the security performance of passengers inside the car during shock, making vehicle integrally have good structural strength And when being knocked preferably reach clash into buffering effect, by positioned at the occupant on middle-end body and within battery obtain Protect to more preferable, travel safer.

Brief description

Fig. 1 is the structural representation of electric automobile chassis assembly CAS；

Fig. 2 is the top view of electric automobile chassis assembly CAS；（With remove occupant's framework, luggage cover plate, cover plate etc. some Part）

Fig. 3 is the structural representation of leading chassis subsystem；

Fig. 4 is the attachment structure schematic diagram on total chassis in electric automobile chassis assembly CAS；

Fig. 5 is the enlarged drawing at A in Fig. 4；

Fig. 6 is the vertical sectional view at the 3rd guiding mast axis in vertical Buffer Unit；

Fig. 7 is the structural representation of rear end chassis subsystem；

Fig. 8 is the sectional view on the subsystem buffer spring axis of rear end chassis；

Fig. 9 is the partial exploded view of rear energy-absorption box.

In figure：1st, leading chassis subsystem；11st, polygonal truss；111st, upper strata；112nd, enging cabin；113rd, cover plate； 114th, lower floor；115th, longeron extension board；12nd, front energy-absorption box；13rd, front anti-collision beam；14th, front Buffer Unit；15th, first-level buffer area； 151st, the first pilot beam；152nd, the first energy-absorption box；16th, Secondary buffer；161st, the second pilot beam；162nd, the second energy-absorption box；17、 3rd energy-absorption box；18th, front beam；2nd, middle-end chassis subsystem；21st, power battery pack；22nd, three-dimensional case shell；221st, dividing plate；222、 Supporting plate；23rd, longeron；24th, collision prevention girders are indulged；25th, connecting rod；26th, sleeve pipe；27th, extension spring；28th, indulge Buffer Unit；281st, shell Body；282nd, opening；283rd, compression spring；284th, baffle plate；285th, slide assemblies；286th, conflict spring；287th, slide block；288th, connect Block；289th, chute；291st, doorframe；292nd, inner support plate；293rd, the first lead；294th, the second lead；295th, rectangle truss； 296th, bracing piece；297th, the 5th energy-absorption box；298th, installing plate；3rd, rear end chassis subsystem；31st, rear energy-absorption box；311st, body； 312nd, outer coil spring；313rd, limited block；314th, spacing draw-in groove；315th, angled seat；316th, angle spring；317th, spring base；32nd, truss Frame；321st, raised；33rd, buffer spring；331st, the second buffer spring；34th, buffer shaft；35th, back buffer assembly；351st, support shaft； 352nd, energy-absorbing spring；353rd, clamping block；354th, fixed column；36th, the 3rd lead；37th, back buffer beam；41st, occupant's framework；42、 Pilot beam；43rd, luggage cover plate；44th, interior securing plate；45th, connecting rod.

Specific embodiment

Referring to figs. 1 to Fig. 9, electric automobile chassis assembly CAS is described further.

As shown in figure 1, a kind of electric automobile chassis assembly CAS, by interconnective for install steering, The leading chassis subsystem 1 of the equipment such as front-wheel, for carrying occupant, installing the middle-end chassis subsystem of the equipment such as power transmission System 2, for installing trailing wheel, suspension, supporting rear end chassis subsystem 3 three part of various equipment to form.

As shown in Fig. 2 wherein, leading chassis subsystem 1 includes into the polygon that the mode of subsiding is provided for buffering collision of closed Truss 11, it is arranged on polygonal truss 11 and utilizes tough energy-absorbing material to pass through deformation as much as possible and absorb to produce because clashing into The front energy-absorption box 12 of huge energy and be connected with front energy-absorption box 12 and set in isosceles trapezoid shape towards one end of front anti-collision beam 13 The front anti-collision beam 13 put.

As shown in figure 1, polygonal truss 11 is divided into the upper strata 111 being sequentially connected and lower floor 114, and front anti-collision beam 13 is towards many One end of side shape truss 11 is in that isosceles trapezoid shape is arranged；Upper strata 111 include the enging cabin 112 that is connected with polygonal truss 11 with And be connected and the cover plate 113 in outstanding tower-like shape setting with enging cabin 112；It is provided with inner support plate 292 in cover plate 113, if Dry inner support plate 292 is sequentially connected in M shape；Lower floor 114 includes the longeron extension board 115 being connected with longeron 23.

As shown in Fig. 2 longeron extension board 115 is connected with front anti-collision beam 13 by front energy-absorption box 12, front anti-collision beam 13 simultaneously It is connected with enging cabin 112, Buffer Unit 14 before being provided between two longeron extension boards 115.

As shown in Figures 2 and 3, front Buffer Unit 14 includes first-level buffer area 15 and Secondary buffer 16；First-level buffer area 15 include and the first pilot beam 151 of the neat setting in the waist Liangping of front anti-collision beam 13 and the first energy-absorption box 152 for buffering； First pilot beam 151 passes through the connection of the first energy-absorption box 152 and front anti-collision beam 13, and the waist rail of front anti-collision beam 13 and the first buffering Beam 151 is respectively at the two ends of the first energy-absorption box 152 and the arrangement that misplaces, and the first pilot beam 151 is arranged at front anti-collision beam 13 simultaneously Inside side；Second buffering area include second pilot beam 161 that arrange concordant with longeron extension board 115 and two ends respectively with Second pilot beam 161 and longeron extension board 115 dislocation connect the second energy-absorption box 162, simultaneously the second pilot beam 161 be arranged at vertical The outside side of beam extension board 115；Longeron extension board 115 is fixedly connected with the two ends of the 3rd energy-absorption box 17 respectively with longeron 23, And longeron 23 is arranged at the inner side of longeron extension board 115.

As shown in figure 3, forming ° inclination angle and being fixedly connected between the first pilot beam 151 and the second pilot beam 161, the The junction of one pilot beam 151 and the second pilot beam 161 is provided with front beam 18, and the first pilot beam 151 and second of both sides is slow Rush beam 161 to connect by front beam 18.

As depicted in figs. 1 and 2, the polygonal truss 11 in leading chassis subsystem 1 is classified as upper strata 111, lower floor 114 Carry out buffer area, repeatedly buffered or preventing secondary shock by arranging multiple buffering area domain, with head-on crash simultaneously The basis of multilayer Path of Force Transfer, arranges head-on crash multilayer Path of Force Transfer, so that energy is rationally and effectively absorbed and to transmit；Front Collision Path of Force Transfer upper strata 111 is made up of the part such as enging cabin 112 and cover plate 113, absorbs what part transmitted from front portion Collision energy simultaneously carries out dispersion transmission its complementary energy on longeron 23 and its corresponding buttress brace；Lower floor 114 is mainly by indulging Beam extension board 115 and front Buffer Unit 14 form, and also include front anti-collision beam 13 and front energy-absorption box 12 etc. simultaneously, are main power transmissions Path；The collision energy receiving is carried out left and right shunting and initial absorption by front anti-collision beam 13 and each energy-absorption box, and passes through it Energy is disperseed transmission toward longeron extension board 115, threshold, centre gangway etc., absorb the impact energy that transmits from front portion of part Amount simultaneously disperses transmission its complementary energy to longeron extension board 115 and threshold etc.；So that being located at taking advantage of on middle terminal chassis system Member and within battery preferably protected.

As shown in figure 1, middle-end chassis subsystem 2 include power battery pack 21, be used for installing power battery pack 21 and with dynamic Power battery pack 21 is in same level and its internal power battery pack 21 constitutes the three-dimensional case shell 22 of an entirety, setting In three-dimensional case shell 22 both sides longeron 23, be arranged at occupant's framework 41 of top of three-dimensional case shell 22 and be arranged at occupant's framework On 41 and domed shape doorframe 291 outwardly；It is provided with interior securing plate 44 in doorframe 291, some interior securing plates 44 are in M Shape is sequentially connected, and is filled with some yielding rubber cushion blocks in doorframe 291 simultaneously, improves shock-absorbing capacity when doorframe 291 clashes into, All it is fixedly connected by bolt thread with doorframe 291 in the end of interior securing plate 44.

As shown in figure 1, the structural form of three-dimensional case shell 22 is using any one in oval case shell, polygon case shell, Preferably oval case shell in this programme；Being internally provided with for reinforcing three-dimensional case shell 22 and fixing power electric in three-dimensional case shell 22 The dividing plate 221 of pond group 21, some dividing plate 221 transverse and longitudinal interleaved settings；Three-dimensional case shell 22 adopts erection truss simultaneously, and vertical The bottom of body case shell 22 is provided with the supporting plate 222 for support power battery pack 21.

As shown in Figure 4 and Figure 5, the vertical collision prevention girders 24 of domed shape setting are connected with longeron 23, vertical collision prevention girders 24 are led to Cross polygonal truss 11 to be connected with front energy-absorption box 12；It is provided with connecting rod 25 at the two ends of vertical collision prevention girders 24, simultaneously in longeron It is fixedly installed sleeve pipe 26, one end of two connecting rods 25 be may be contained within sleeve pipe 26 and is slidably connected with sleeve pipe 26 on 23, and two The end of connecting rod 25 is connected with each other by the extension spring 27 that original state is nature；Produced by vertical collision prevention girders 24 Deformation, makes two ends of vertical collision prevention girders 24 stretch out along two ends, promotes connecting rod 25 to be in and slide on longeron 23, i.e. connecting rod 25 are in slip in sleeve pipe 26 with extension spring 27, reach energy-absorbing by the deformation that extension spring 27 and vertical collision prevention girders 24 produce The effect of buffering.

As shown in fig. 6, being provided with the vertical Buffer Unit 28 for buffering between vertical collision prevention girders 24 and longeron 23；Vertical buffering Assembly 28 can be placed equidistant multiple；Vertical Buffer Unit 28 includes in hollow form setting and one end is provided with the housing of opening 282 281st, it is arranged in housing 281 and compression spring 283 that one end is fixedly connected with the inwall of housing 281 and be arranged at compression bullet Spring 283 other end and by compression spring 283 baffle plate 284 inconsistent with the opening 282 of housing 281；In baffle plate 284 and housing Second lead 294 is provided with 281 madial wall, the two ends of compression spring 283 are all socketed on the second lead 294, And be fixedly connected with housing 281 and baffle plate 284 respectively.

As shown in fig. 6, the side wall in the other end of housing 281 is provided with and is easy to housing 281 is installed on longeron 23 Installing plate 298, installing plate 298 is in that arcuation is arranged, and installing plate 298 is symmetricly set on the two side of housing 281, and by setting Threaded with longeron 23 in the bolt on installing plate 298 and realize fixing and the purpose on longeron 23 housing 281；Baffle plate 284 It is arranged in housing 281 and is slidably connected with the inwall conflict of housing 281, baffle plate 284 is by being arranged at baffle plate 284 and indulging simultaneously Slide assemblies 285 between collision prevention girders 24 are connected with longeron 23.

As shown in fig. 6, slide assemblies 285 include conflict spring 286, be arranged at the slide block 287 at conflict spring 286 two ends with And the contiguous block 288 being arranged on slide block 287 end face and being slidably connected with slide block 287；Two slide blocks 287 are provided with One lead 293, the two ends of conflict spring 286 be socketed on respectively on the first lead 293 of two slide blocks 287 and with slide block 287 It is fixedly connected；Conflicted with baffle plate 284 by the vertical collision prevention girders 24 being connected on contiguous block 288 and be connected in slide block 287 other end；Shell The opening 282 of body 281 in diminishing prism-frustum-shaped setting, makes baffle plate 284 pass through the bullet of compression spring 283 towards in housing 281 Conflicted with opening 282 and be connected in opening 282 end that baffle plate 284 is pressed in housing 281 by property power.

As shown in fig. 6, the end face of slide block 287 is conflicted with conflict spring 286 being connected, other end is obliquely arranged, And it is in concordant with housing 281 on the end face of opening 282；Chute 289 is provided with slide block 287, and contiguous block 288 is arranged at In chute 289, by applying pressure to slide block 287 towards in housing 281 internal direction, slide block 287 is promoted to be on opening 282 It is slidably connected with housing 281, be simultaneously connected with block 288 and be in slip in chute 289, conflict spring 286 gradually reduces, final slide block The return that conflict spring 286 is passed through in 287 inside being in housing 281 is inconsistent with the inwall of housing 281.

As shown in Figure 4 and Figure 5, rectangle truss 295 is provided with longeron 23, multiple rectangle truss 295 are arranged at vertical slow Rush the both sides of assembly 28；In this programme, vertical Buffer Unit 28 is in the middle-end of longeron 23, and two rectangle truss 295 are symmetricly set in vertical Both sides of Buffer Unit 28 and being fixedly connected with longeron 23；The long-diagonal of rectangle truss 295 is provided with bracing piece 296, the middle-end of four bracing pieces 296 converges on the central point of rectangle truss 295, and bracing piece 296 is all by the 5th energy-absorbing Box 297 is fixedly connected with rectangle truss 295.

As shown in Figure 1 and Figure 4, when the side of car body is clashed into, impact simultaneously act on vertical collision prevention girders 24 and On doorframe 291, doorframe 291 passes through internal attachment structure and corresponding buffer substance, to reach buffering and to increase anticollision The effect of structure, the part anticollision power that doorframe 291 can will act on doorframe 291 simultaneously is transferred to occupant's framework 41 and stands On body case shell 22, reach scattered effect；And vertical collision prevention girders 24 stress of domed shape produces deformation, promote vertical collision prevention girders 24 to Two ends extend, and transmission on the front energy-absorption box 12 that anticollision power is connected to vertical collision prevention girders 24 two ends, by front energy-absorption box 12 by big portion Point impact is absorbed and split-up；The connecting rod 25 being simultaneously arranged in vertical collision prevention girders 24 is in the set on longeron 23 There is sliding, extension spring 27 stress stretches, absorbable portion of energy in cylinder；Vertical collision prevention girders 24 produce deformation towards longeron 23 direction When, vertical collision prevention girders 24 simultaneously act on vertical Buffer Unit 28, and vertical collision prevention girders 24 act on slide block 287 by contiguous block 288, Two slide blocks 287 move closer to, and are in and gradually slide into housing 281 on the opening 282 of housing 281, simultaneously two slide blocks 287 it Between conflict spring 286 compress, by the compression of conflict spring 286 can reach absorb part impact effect；Slide block simultaneously Again active force is acted on baffle plate 284 when sliding in 287 casees, baffle plate 284 is separated with opening 282, and then is in housing 281 Inside enter line slip, so that compression spring 283 is in housing 281 and be compressed, reach the effect buffering again；Conflict spring 286 And compression spring 283 is gradually compressed into row energy-absorbing, and final slide block 287 is in the inside of housing 281 by conflict spring 286 return is inconsistent with the inwall of housing 281, completes the buffering energy-absorbing function of vertical Buffer Unit 28.

As shown in fig. 7, the rear energy-absorbing that rear end chassis subsystem 3 includes back buffer beam 37, one end is connected with back buffer beam 37 Truss frame 32 that box 31 is connected with rear energy-absorption box 31 other end, it is arranged in truss frame 32 and one end is connected with truss frame 32 Buffer spring 33, it is arranged at the buffer shaft 34 of buffer spring 33 other end, is arranged between occupant's framework 41 and back buffer beam 37 And the pilot beam 42 of curved setting and be arranged at the back buffer assembly being used for buffering between back buffer beam 37 and truss frame 32 35.

As shown in figure 9, rear energy-absorption box 31 includes the body 311 of the corrugated setting of watchcase, the bullet being arranged in body 311 Spring abutment 317 and be arranged at the outer coil spring 312 in spring base 317 both ends of the surface；Two outer coil springs 312 are arranged at same straight line On, clamping block 353 is provided with the madial wall of body 311 simultaneously, outer coil spring 312 be socketed on clamping block 353 and with this The madial wall of body 311 is fixedly connected；Limited block 313 is provided with the madial wall of body 311, two limited blocks 313 form and are used for The spacing draw-in groove 314 of garter spring seat 317, and limited block 313 is symmetricly set on the madial walls of 311 liang of body opposition, by bullet Spring abutment 317 is fixedly installed on the middle part of body 311.

As shown in figure 9, angled seat 315 is provided with spring base 317 simultaneously, angle spring 316 is provided with angled seat 315, The two ends of angle spring 316 are fixedly connected with body 311 and angled seat 315 respectively；Multiple angles spring 316 is uniformly arranged on outer coil spring On 312 periphery, and all it is vertically arranged with Impact direction.

As shown in figure 8, being provided with raised 321, raised 321 in truss frame 32 towards the interlude of back buffer beam 37 connection end End face is connected with back buffer beam 37 by rear energy-absorption box 31, the concave setting in other end；The end face of depression is provided with 3rd lead 36, an end of buffer spring 33 is socketed on the 3rd lead 36 and is fixedly connected with truss frame 32, another End is fixedly connected with two interconnected buffer shaft 34；Equally the junction of two buffer shafts 34 is provided with corresponding 3rd guiding Post 36, is made buffer spring 33 be socketed on and is fixedly connected with buffer shaft 34 on the 3rd lead 36.

As shown in fig. 7, two buffer shafts 34 are arranged towards the end face triangularity shape of longeron 23 with truss frame 32；In buffering It is provided with the 4th energy-absorption box, buffer shaft 34 and longeron 23 are respectively arranged at the 4th energy-absorption box both ends of the surface between axle 34 and longeron 23 On, and buffer shaft 34 is arranged at the inner side of longeron 23；The center line of the triangle that buffer shaft 34 is formed with truss frame 32 sets It is equipped with the second buffer spring 331, the second buffer spring 331 two ends are all fixing even with the junction of buffer shaft 34 and truss frame 32 Connect.

As shown in fig. 7, back buffer assembly 35 is symmetricly set in raised 321 both sides；Back buffer assembly 35 includes support shaft 351 and be vertically arranged energy-absorbing spring 352 with Impact direction, triangularity shape cloth between two support shafts 351 and back buffer beam 37 Put, the support shaft 351 of two composition triangle arrangements forms tetrapyamid shape, and the connection end of support shaft 351 is with truss frame 32 even Connect, the other end is fixedly connected with back buffer beam 37；Energy-absorbing spring 352 is arranged on the center line of rectangular pyramid, and energy-absorbing spring 352 Two ends are fixedly connected with the connection end of support shaft 351 and back buffer beam 37 respectively；Back buffer beam 37 towards truss frame 32 end face On be provided with fixed column 354, an end of energy-absorbing spring 352 is socketed in fixed column 354 and is fixedly connected with back buffer beam 37.

As shown in figure 1, being provided with connecting rod 45 between truss frame 32 and pilot beam 42, some connecting rods 45 connect successively in W shape Connect and be arranged at the pilot beam between truss frame 32 and pilot beam 42, the impact that truss frame 32 is subject to being arranged by arcuation 42 reach the scattered effect of all directions；Luggage cover plate 43 is connected with occupant's framework 41, in luggage cover plate 43, is provided with interior adding Gu plate 44, some interior securing plates 44 are sequentially connected in M shape.

As shown in Fig. 2 three-dimensional case shell 22 one end is connected with polygonal truss 11, make the polygon that front end is in isosceles trapezoid shape Truss 11 is connected with the oval case shell of middle-end, makes vehicle front and middle-end be in the trend being gradually increased, when improving vehicle traveling Cleanliness；And the afterbody of the other end is connected, increase the shock shock-absorbing capacity of rear vehicle end with rectangle truss 295；Indulge anti-simultaneously The one end hitting beam 24 is connected with polygonal truss 11 by the 3rd energy-absorption box 17, and the other end passes through the 4th energy-absorption box and truss frame 32 Connect.

All at least provided with two in the first energy-absorption box 152, the second energy-absorption box 162, the 3rd energy-absorption box 17, the 4th energy-absorption box Bar energy-absorbing muscle, and the axis of energy-absorbing muscle is vertically arranged with Impact direction；Some conquassation muscle are preset on each energy-absorption box simultaneously, with Just each energy-absorption box is allowed conquassation to occur in the axial direction and then absorbs all energy, thus reducing longeron 23 in interior body shell 311 produce infringement.

As shown in Figure 1 and Figure 7, when automobile suffers from the fierce collision come from rear portion, back buffer beam 37 absorbs and clashes into kinetic energy It is resent to rear energy-absorption box 31, back buffer assembly 35 plays good cushioning effect using the shock-absorbing capacity of itself simultaneously, absorb The energy that part is clashed into, caches most of energy simultaneously；When truss frame 32 is when subsiding, the energy that part is clashed into by pilot beam 42 It is dispersed to all angles of occupant's framework 41 by multiple directions, reaches the effect of buffering, when truss frame 32 collapses to certain journey After degree, back buffer beam 37 is depressed into the effect of buffer spring 33 enterprising row buffering decompression；Buffer spring 33 other end by with truss The buffer shaft 34 that frame 32 forms triangle connects, and using the stability of triangle, on the one hand can improve buffering during shock Stability between spring 33 and truss, improves the bonding strength between truss frame 32 and buffer spring 33, reaches preferably Protection middle-end chassis subsystem 2 and occupant thereon and its interior power battery pack 21, on the other hand and by clashing into of being subject to Power is dispersed to multiple directions, reaches the effect of alleviation；Pass through in design to avoid the danger it may happen that unfavorable to occupant simultaneously The relatively low collision deceleration of deformation, the intrusion to driving cabin that minimizing rearward collision leads to and holding, ensures occupant with this Safety.

As shown in figure 1, by the structure of the passive anticollision of vehicle as Path of Force Transfer basis, by the impact of vehicle body side It is respectively acting on polygonal truss 11, truss frame 32, each collision prevention girders, occupant's framework 41, threshold and doorframe 291, make shock Power carries out the dispersion of multiple directions, acts on and carry out energy-absorbing and the enterprising row buffering of corresponding Buffer Unit on corresponding energy-absorption box To reduce damage during shock etc. mode, the impact of vehicle to be carried out multi-direction reduction and buffers with multiple, by each buffering Assembly and corresponding structure annexation, make the energy that part is clashed into be dispersed to multiple directions by corresponding annexation The all angles of occupant's framework 41, by each Buffer Unit, part impact is absorbed simultaneously and is cached to reach slow The effect of punching, makes vehicle have good structural strength and preferably reach the effect clashing into buffering when being knocked；Thus Protection middle-end chassis subsystem 2 and occupant thereon and its interior power battery pack 21；In design pass through avoid it may happen that The relatively low collision of the dangerous deformations unfavorable to occupant, the intrusion to driving cabin that minimizing rearward collision leads to and holding is slowed down Degree, the safety of occupant is ensured with this, by positioned at the occupant on vehicle middle-end and within battery preferably protected, travel Safer.

The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement Example, all technical schemes belonging under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications Should be regarded as protection scope of the present invention.

Claims

1. a kind of electric automobile chassis assembly CAS it is characterised in that：By leading chassis subsystem（1）, middle-end chassis son System（2）With rear end chassis subsystem（3）Constitute；

Described leading chassis subsystem（1）Including the polygonal truss becoming the mode of subsiding to arrange（11）, be arranged at polygonal truss （11）On front energy-absorption box（12）And with front energy-absorption box（12）The front anti-collision beam connecting（13）, described polygonal truss（11）Point For the upper strata being sequentially connected（111）And lower floor（114）, described upper strata（111）Including with polygonal truss（11）Connect starts Cabin（112）And and enging cabin（112）Connect and the cover plate in outstanding tower-like shape setting（113）, described lower floor（114）Including With longeron（23）The longeron extension board connecting（115）, described longeron extension board（115）By front energy-absorption box（12）With front anti-collision beam （13）Connect, described front anti-collision beam（13）With enging cabin（112）Connect, in longeron extension board described in two（115）Between arrange There is front Buffer Unit（14）；

Described middle-end chassis subsystem（2）Including power battery pack（21）, be used for power battery pack is installed（21）And and power electric Pond group（21）It is in the three-dimensional case shell in same level（22）And it is arranged at three-dimensional case shell（22）The longeron of both sides（23）, institute State longeron（23）On be connected with the vertical collision prevention girders of domed shape setting（24）, in described vertical collision prevention girders（24）Two ends be provided with Connecting rod（25）, in described longeron（23）On be fixedly installed sleeve pipe（26）, connecting rod described in two（25）One end may be contained within Sleeve pipe（26）Interior and and sleeve pipe（26）It is slidably connected, and connecting rod described in two（25）End pass through extension spring（27）Mutually interconnect Connect, in described vertical collision prevention girders（24）With longeron（23）Between be additionally provided with for buffering vertical Buffer Unit（28）；

Described rear end chassis subsystem（3）Including back buffer beam（37）, one end and back buffer beam（37）The rear energy-absorption box connecting （31）, and rear energy-absorption box（31）The truss frame that the other end connects（32）, be arranged at truss frame（32）Interior and one end and truss frame （32）The buffer spring connecting（33）And it is arranged at buffer spring（33）The buffer shaft of the other end（34）, buffer shaft described in two （34）With described truss frame（32）Triangularity shape is arranged, and buffer shaft described in two（34）Respectively at two longerons（23）Connect, and Collision prevention girders in the rear（37）With truss frame（32）Between be additionally provided with for buffering back buffer assembly（35）；Described solid case Shell（22）One end and described polygonal truss（11）Connection, the other end and described truss frame（32）Connect, in described solid case shell （22）Top be provided with occupant's framework（41）, described occupant's framework（41）With back buffer beam（37）Between pass through pilot beam（42） Connect, pilot beam described in two（42）It is symmetricly set in back buffer beam（37）On, described vertical collision prevention girders（24）One end is front slow with described Rush assembly（14）Connection, the other end and described back buffer assembly（35）Connect.

2. electric automobile chassis assembly CAS according to claim 1 it is characterised in that：Described front Buffer Unit （14）Including first-level buffer area（15）And Secondary buffer（16）, described front anti-collision beam（13）Towards polygonal truss（11）One end Arrange in isosceles trapezoid shape, described first-level buffer area（15）Including with front anti-collision beam（13）First the delaying of the neat setting in waist Liangping Rush beam（151）And the first energy-absorption box for buffering（152）, described first pilot beam（151）By the first energy-absorption box（152） With front anti-collision beam（13）Connection, and the first pilot beam（151）With front anti-collision beam（13）Waist rail be respectively at the first energy-absorption box （152）Two ends and misplace arrangement；Described second buffering area includes and longeron extension board（115）Second pilot beam of concordant setting （161）And two ends respectively with the second pilot beam（161）With longeron extension board（115）The second energy-absorption box that dislocation connects（162）, Described first pilot beam（151）With the second pilot beam（161）It is fixedly connected.

3. electric automobile chassis assembly CAS according to claim 2 it is characterised in that：Described first pilot beam （151）It is arranged at front anti-collision beam（13）Inside side, described second pilot beam（161）It is arranged at longeron extension board（115）To Outer side, described longeron extension board（115）With longeron（23）Respectively with the 3rd energy-absorption box（17）Two ends be fixedly connected, and vertical Beam（23）It is arranged at longeron extension board（115）Inner side.

4. electric automobile chassis assembly CAS according to claim 1 it is characterised in that：Described vertical Buffer Unit （28）Including in hollow form setting and one end is provided with opening（282）Housing（281）, be arranged at housing（281）Interior and one end With housing（281）The compression spring that is fixedly connected of inwall（283）And it is arranged at compression spring（283）The other end and by pressure Contracting spring（283）With housing（281）Opening（282）Inconsistent baffle plate（284）, described housing（281）The other end with vertical Beam（23）Connect, described baffle plate（284）It is arranged at housing（281）Interior and and housing（281）Inwall be slidably connected, described baffle plate （284）By being arranged at baffle plate（284）With vertical collision prevention girders（24）Between for buffering slide assemblies（285）With longeron（23） Connect.

5. electric automobile chassis assembly CAS according to claim 4 it is characterised in that：Described slide assemblies （285）Including conflict spring（286）, be arranged at conflict spring（286）The slide block at two ends（287）And it is arranged at slide block（287） Contiguous block on end face（288）, described slide block（287）Other end is by being arranged at contiguous block（288）On vertical collision prevention girders （24）With baffle plate（284）Conflict and connect, described housing（281）Opening（282）Towards housing（281）Interior in diminishing terrace with edge Shape is arranged, described slide block（287）End face and conflict spring（286）Conflict and connect, other end is obliquely arranged, and locate In opening（282）End face on housing（281）It is slidably connected.

6. electric automobile chassis assembly CAS according to claim 1 it is characterised in that：In described truss frame（32） On be provided with projection（321）, described projection（321）End face pass through rear energy-absorption box（31）With back buffer beam（37）Connect, institute State buffer spring（33）An end be arranged at projection（321）Other end formed depression in and with truss frame（32）The company of fixation Connect, buffer spring（33）The other end and two interconnected buffer shaft（34）It is fixedly connected, described back buffer assembly（35）Right Claim to be arranged at projection（321）Both sides.

7. electric automobile chassis assembly CAS according to claim 6 it is characterised in that：Described back buffer assembly （35）Including support shaft（351）And it is vertically arranged energy-absorbing spring with Impact direction（352）, support shaft described in two（351）With rear Collision prevention girders（37）Between triangularity shape arrangement, and two support shafts（351）Connection end and truss frame（32）Connect, the other end with Back buffer beam（37）It is fixedly connected, described energy-absorbing spring（352）Be arranged on the center line of triangle, and two ends respectively with support Axle（351）Connection end and back buffer beam（37）It is fixedly connected.

8. electric automobile chassis assembly CAS according to claim 7 it is characterised in that：Described rear energy-absorption box（31） Body including the corrugated setting of watchcase（311）, be arranged at body（311）Interior spring base（317）And it is arranged at spring Seat（317）Outer coil spring in both ends of the surface（312）, outer coil spring described in two（312）Respectively with body（311）Madial wall even Connect, in described body（311）Madial wall on be provided with limited block（313）, limited block described in two（313）Formed for clamping bullet Spring abutment（317）Spacing draw-in groove（314）, and limited block（313）It is symmetricly set in body（311）On the madial wall of two opposition.

9. electric automobile chassis assembly CAS according to claim 8 it is characterised in that：In spring base（317）On It is provided with angled seat（315）, in described angled seat（315）On be provided with angle spring（316）, described angle spring（316）Two ends respectively With body（311）And angled seat（315）Connect, multiple described angles spring（316）All well-balanced it is arranged at outer coil spring（312）Circumference On face, and all it is vertically arranged with Impact direction.

10. electric automobile chassis assembly CAS according to claim 1 it is characterised in that：Described solid case shell （22）Structural form using any one in oval case shell, polygon case shell, in described solid case shell（22）Inside It is provided with for reinforcing three-dimensional case shell（22）And fix power battery pack（21）Dividing plate（221）, some described dividing plates（221）Horizontal Vertical interleaved setting, and in three-dimensional case shell（22）Bottom be provided with for support power battery pack（21）Supporting plate（222）.