CN106394685B - Electric automobile chassis assembly anti-collision system - Google Patents

Abstract

The present invention relates to a kind of electric automobile chassis assembly anti-collision system, are made of front end, middle-end and the chassis subsystem of rear end three；Leading chassis subsystem includes polygonal truss, preceding energy-absorption box, front anti-collision beam, longeron extension board and preceding Buffer Unit, middle-end chassis subsystem includes power solid box shell, battery pack, longeron, vertical collision prevention girders and vertical Buffer Unit, rear end chassis subsystem includes back buffer beam, energy-absorption box afterwards, truss frame, buffer spring, buffer shaft and the back buffer assembly being set between back buffer beam and truss frame, three-dimensional box shell one end is connect with polygonal truss, the other end is connect with truss frame, vertical collision prevention girders one end is connect with preceding Buffer Unit, the other end is connect with back buffer assembly；Based on multiple Path of Force Transfer after being collided to vehicle body, to embody the advantage in three energy-absorbing areas, so that Impact energy is rationally and effectively carried out snubber and transmission, occupant is made preferably to be protected, preferably protects occupant safe when being hit.

Description

Electric automobile chassis assembly anti-collision system

Technical field

The present invention relates to automotive fields, more specifically, it relates to a kind of electric automobile chassis assembly anti-collision system.

Background technology

Automobile chassis group is mainly made of power train, running gear, steering system and four part of braking system, plays bearing, installation The assembly of automobile engine and its each component shapes the moulded of automobile and receives to hit again and plays support and buffering Effect, body lightening has become research hotspot, especially to electric vehicle, light-weighted meaning bigger, to light-weighted requirement Higher needs upper find from more directions to be newly applicable in scheme to reach significant light weight effect.

Traditional automobile chassis, most of is middle column type or rectangular frame type, the China of Publication No. CN104494702A Patent discloses a kind of pure electric automobile chassis system using lightweight passenger-carrying chassis structure, if including two longitudinal girders and Dry crossbeam, several crossbeams are distributed in the different height level and different longitudinal position of two longitudinal girders, several crossbeam joggles in Two longitudinal girders form double longeron multilayer soles of whole stress；The front of double longeron multilayer soles is connected with preceding bridge Frame, front axle bracket are fixed by two longitudinal girders；The rear portion of double longeron multilayer soles is connected with rear axle stand；Rear axle stand is logical Two longitudinal girders are crossed 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 Longitudinal girder is fixed, and battery and motor are positioned over chassis both sides；Although combine whole stress type body structure and The advantages of double longeron body structures, reaches front of the car in the program when automobile is hit by longeron and front axle bracket Anticollision acts on, and due to centre-pillar structure or the anticollision performance and limited strength of rectangular frame structure, chassis is being impacted Performance substantially reduces, while overall distribution unevenness causes the center of gravity of vehicle higher, and vehicle is unstable, when clashing, to multiplying The protection of member is inadequate, to influence the driving safety performance of burst accident in driving process.

Invention content

In view of the deficienciess of the prior art, the object of the present invention is to provide a kind of vehicle anti-collision performances more preferably, traveling Safer electric automobile chassis assembly anti-collision system.

To achieve the above object, the present invention provides following technical solutions：

A kind of electric automobile chassis assembly anti-collision system, by leading chassis subsystem, middle-end chassis subsystem and rear end bottom Disc subsystem is constituted；The leading chassis subsystem includes into the polygonal truss that the mode of collapsing is arranged, is set to polygon purlin Preceding energy-absorption box on frame and the front anti-collision beam being connect with preceding energy-absorption box, the polygonal truss be divided into sequentially connected upper layer and Lower layer, the upper layer include the enging cabin being connect with polygonal truss and connect with enging cabin and be arranged in outstanding tower-like shape Cover plate, the lower layer includes the longeron extension board being connect with longeron, and the longeron extension board passes through preceding energy-absorption box and preceding anticollision Beam connects, and the front anti-collision beam is connect with enging cabin, Buffer Unit before being provided between the two longeron extension boards；Institute It includes power battery pack, for installing power battery pack and being in same level with power battery pack to state middle-end chassis subsystem On three-dimensional box shell and be set to the longerons of three-dimensional box shell both sides, the vertical anticollision of domed shape setting is connected on the longeron Beam is both provided with connecting rod at the both ends of the vertical collision prevention girders, casing, two connecting rods is fixedly installed on the longeron One end may be contained within connecting in casing and with cannula slide, and the end of two connecting rods is mutually interconnected by extension spring It connects, the vertical Buffer Unit for buffering is additionally provided between the vertical collision prevention girders and longeron；The rear end chassis subsystem packet Include rear energy-absorption box that one end connect with back buffer beam, the truss frame that is connect with the rear energy-absorption box other end, be set in truss frame and Buffer spring that one end is connect with truss frame and the buffer shaft for being set to the buffer spring other end, two buffer shafts with it is described Truss frame is arranged at triangle, and two buffer shafts are connected respectively at two longerons, and collision prevention girders and truss frame in the rear Between be additionally provided with back buffer assembly for buffering；It is described solid box shell one end connect with the polygonal truss, the other end Connect with the truss frame, be provided with occupant's frame above the three-dimensional box shell, occupant's frame and back buffer beam it Between connected by pilot beam, two pilot beams are symmetrically disposed on back buffer beam, described vertical collision prevention girders one end with it is described preceding slow Rush component connection, the other end is connect with the back buffer assembly.

So set, chassis is divided into leading chassis subsystem, middle-end chassis subsystem and rear end chassis subsystem three Part, wherein set leading chassis subsystem to polygonal truss structure, built by steel, with convenient suspension on it, supported Various equipment, such as front-wheel and steering；Polygonal truss in front terminal chassis system is divided into upper layer and lower layer, it will be positive The Path of Force Transfer of collision is separately transmitted；Head-on crash Path of Force Transfer upper layer is made of parts such as enging cabin and cover plates, is absorbed Its complementary energy is simultaneously carried out dispersion biography by collision energy that part is transmitted from front to longeron and front wall and its corresponding reinforcing beam It passs；Lower layer is mainly to be made of longeron extension board and preceding Buffer Unit, while also including front anti-collision beam and energy-absorption box etc., is main The Path of Force Transfer wanted；The collision energy received is subjected to left and right point by front anti-collision beam, preceding energy-absorption box and preceding Buffer Unit Stream and initial absorption, and transmitted energy toward dispersions such as longeron extension board, threshold, centre gangways by them, when reaching shock The dissipation of most of power and buffering；Leading chassis is rigid structure simultaneously, while preceding energy-absorption box being arranged on polygonal truss And front anti-collision beam is inhaled by deforming when automobile front is by clashing using tough energy-absorbing material as much as possible It receives because hitting the huge energy generated, front anti-collision beam can bear largely shock and damage；It is passed with front end elevational collision multilayer The basis of power path is arranged the purpose of head-on crash multilayer Path of Force Transfer to embody the advantage in front end energy-absorbing area, energy is enable to close Reason is effectively absorbed and is transmitted；Left and right shunting is carried out continuously using the stress in structure and pass the longeron of energy backward simultaneously It passs, polygonal truss collapses in leading chassis subsystem, while absorbing shock kinetic energy；It is greatly carried by two layers of corresponding cooperation The crashworthiness of high front terminal chassis system, to protect the sub- chassis in middle part, occupant thereon and the power battery pack in it.

It accommodates, support, fix whole power battery packs by three-dimensional box shell in the subsystem of middle-end chassis so that the bottom of at Battery no longer accounts for any volume except disk, to save space；Three-dimensional box shell and its internal power battery pack are constituted simultaneously One entirety removes outside connecting component except three-dimensional box shell, and there is no additional evagination, limb angle and other burden, by three-dimensional case Shell is located at same level with power battery pack, keeps the center of gravity of vehicle lower, more stable；The top of three-dimensional box shell is one flat simultaneously Face, facility arbitrarily arrange various structures and equipment on this plane, arbitrarily adjust its position, make the entire vehicle design of new car more just Profit, and keep subsequent upgrade remodeling from now on more convenient；Rigidity solid tank shell, intensity highest, than leading chassis subsystem and Rear end chassis subsystem intensity higher, structure material are aluminium, and to mitigate weight, occupant's frame is located on the sub- chassis in middle part, The security performance of effective protection occupant, power battery pack are located within the sub- chassis in middle part, and car is effectively ensured after receiving shock Safety and stability performance after shock；Overall construction intensity of the longeron in outside for connecting middle part, and it is main before and after connection Interconnecting piece has the function of improving overall construction intensity, while the effect that the longeron of both sides plays good support and stablizes；When When the side of car body is hit, first impact force is acted in vertical collision prevention girders, the vertical anticollision beam stress of domed shape generates shape Become, indulges collision prevention girders and extend to both ends, both ends is made to be respectively acting on forward and backward energy-absorption box, by energy-absorption box by most of impact force Carry out absorption and split-up；It is slid in the sleeve that the connecting rod being set in vertical collision prevention girders simultaneously is on longeron, Extension spring stress stretches, and can absorb portion of energy；When vertical collision prevention girders generate deformation towards longeron direction, vertical collision prevention girders act on simultaneously In indulging on Buffer Unit, by indulging Buffer Unit again to indulging the impact force in collision prevention girders into row buffering；It is vertical by will act on Impact force in collision prevention girders carries out the dispersion of multiple directions, acts on progress energy-absorbing on corresponding energy-absorption box and indulge accordingly slow The enterprising row buffering of component and dispersion are rushed, the impact force of vehicle side is subjected to multi-direction reduction and repeatedly buffering；Pass through vehicle side It holds the structure of passive anticollision as the basis of Path of Force Transfer, by vertical Buffer Unit and corresponding structure connection relation, makes portion The all angles for dividing the energy hit to be dispersed to occupant's frame to multiple directions by corresponding connection relation, while by vertical slow Component is rushed to absorb part impact force and cache to have the function that buffering；Vehicle side is set to have good structure strong It spends and preferably has the function that hit buffering when being knocked；It is unfavorable to occupant by avoiding to occur in design Dangerous deformations are reduced the intrusion caused by rearward collision to cockpit and keep relatively low collision deceleration, ensured with this The safety of occupant.

Rear end chassis subsystem includes the truss frame of the steel of high intensity and rigidity structure, thus convenient suspension above, Support various equipment, such as trailing wheel；When automobile is by the fierce collision come from rear portion, back buffer beam absorbs shock kinetic energy and passes again It send to rear energy-absorption box, while back buffer assembly plays good cushioning effect using the cushion performance of itself, absorbs part and hit Energy, while caching most of energy；When truss frame is when collapsing, the energy that part is hit is passed through multiple directions by pilot beam The all angles of occupant's frame are dispersed to, have the function that buffering, after truss frame collapses to a certain extent, back buffer beam is depressed into The effect of the enterprising row buffering decompression of buffer spring；The buffer spring other end is connected by forming the buffer shaft of triangle with truss frame It connects, using the stability of triangle, stability when on the one hand can improve shock between buffer spring and truss improves Bonding strength between truss frame and buffer spring, reach preferably protection middle-end chassis subsystem and occupant thereon and On the other hand the impact force being subject to and is dispersed to multiple directions, has the function that alleviation by the power battery pack in it；With vehicle Based on the buffer structure Path of Force Transfer that rear end is passively collided, 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 transmit；Rear end chassis subsystem collapses, accordingly when shock Have the function that absorb impact energy on back buffer assembly and connection structure so that the occupant being located on middle terminal chassis system Battery within is preferably protected；Simultaneously in design by avoiding that the dangerous deformations unfavorable to occupant may occur, It reduces the intrusion caused by rearward collision to cockpit and keeps relatively low collision deceleration, ensure the peace of occupant with this Entirely.

By being respectively provided with corresponding Buffer Unit and corresponding connection structure in three systems on vehicle body, make car body Impact force can be disperseed well when being hit so that the personnel in occupant's frame are protected well, are passed through The design mounting structure for increasing car body, to the crashworthiness of car body when being hit with improving, passengers inside the car when to improve shock Security performance, making vehicle integrally has the function of good structural strength and preferably reaches shock buffering when being knocked, Battery of the occupant on middle-end ontology is preferably protected, traveling is safer.

Further setting：The preceding Buffer Unit includes first-level buffer area and Secondary buffer, and the front anti-collision beam is towards more One end of side shape truss is arranged in isosceles trapezoid shape, and the first-level buffer area includes being arranged together with the waist Liangping of front anti-collision beam First pilot beam and the first energy-absorption box for buffering, the company that first pilot beam passes through the first energy-absorption box and front anti-collision beam It connects, and the waist rail of the first pilot beam and front anti-collision beam is respectively at both ends and the dislocation arrangement of the first energy-absorption box；The two level is slow Rush area include the second pilot beam being arranged concordant with longeron extension board and both ends respectively with the second pilot beam and longeron extension board Misplace the second energy-absorption box connected, and first pilot beam and the second pilot beam are fixedly connected.

So set, when vehicle is hit, leading chassis subsystem is pressurized, wherein the first buffering on middle level Area's compressive deformation, by the front anti-collision beam being arranged in isosceles trapezoid shape, two waists of front anti-collision beam inwardly squeeze after being under pressure, The impact force that front anti-collision beam passes over is absorbed by the first energy-absorption box again, when the first energy-absorption box stress is excessive and impaired, by And dislocation arrangement concordant with the waist rail of front anti-collision beam in the first pilot beam, makes front end collision prevention girders be on the first pilot beam and slides, In addition the second pilot beam is concordant setting with longeron, i.e., there are angles with the first pilot beam, and the waist of front anti-collision beam both sides is made to be 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 later It contradicts, front anti-collision beam and the first buffering are set up and have the function that buffering together at this time, and the second energy-absorption box is mainly to undertake postorder The effect for hitting 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 extension It is slided on plate, the preceding energy-absorption box being set at this time on longeron is mainly to absorb the effect hit, and longeron is main support and divides Dissipate impact force undertakes component；It by the way that multiple buffering area is arranged, is connected according to structure mutual between buffering area, improves front end bottom The cushion bumper performance and multiple impact performance of disc subsystem, while it can individually be carried out more after some buffering area is impaired It changes, the effective effect for saving maintenance cost.

Further setting：First pilot beam is set to the inside side of front anti-collision beam, the second pilot beam setting In the side that longeron extension board is outside, the longeron extension board is fixedly connected with the both ends of third energy-absorption box respectively with longeron, and Longeron is set to the inside of longeron extension board.

So set, 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, in addition the second pilot beam is arranged with longeron to be concordant, i.e. there are angles between the first pilot beam and the second pilot beam, before making End collision prevention girders are in outside the first pilot beam and slide, and the waist of front anti-collision beam both sides increases in the lasting sliding of the first pilot beam to reach The effect of big frictional force improves the effect of buffering effect, while front anti-collision beam and the first Buffer Unit undertake resistance buffering together Effect；With should the second energy-absorption box it is impaired after, front anti-collision beam is in longeron extension board outside with the first pilot beam, the second pilot beam Sliding, front anti-collision beam, the first Buffer Unit, the second Buffer Unit undertake the effect subsequently hit together at this time；Multiple buffering groups The effect that the multiple impact of chassis system that breaks before the section's of being equipped with raising vehicle of part buffers；On the one hand can reduce beam it is impaired after The destruction of phase middle-end chassis subsystem internal makes the second pilot beam prolong in longeron on the other hand since corresponding inclination angle is arranged It stretches and has the function that increasing friction force on the outside of plate, as long as the preceding energy-absorption box being set at this time on longeron is to absorb the work hit With.

Further setting：The vertical Buffer Unit includes that hollow form setting and one end are provided with the shell of opening, setting It the compressed spring that is fixedly connected with the inner wall of shell in shell and one end and is set to the compressed spring other end and passes through pressure The inconsistent baffle of the opening of contracting spring and shell, the other end of the shell are connect with longeron, and the baffle plate setting is in shell Interior and with shell inner wall is slidably connected, and the slide assemblies for buffering are provided between the baffle and vertical collision prevention girders.

When generating deformation so set, working as and indulging collision prevention girders, and acting on vertical Buffer Unit, collision prevention girders are indulged by being set to Slide assemblies on the open end of shell remake for baffle, and by being contradicted with baffle, baffle is disengaged with opening, baffle And then slided in shell, so that compressed spring is in shell and compressed, reaches vertical Buffer Unit into row buffering Effect.

Further setting：The slide assemblies include contradicting spring, being set to the sliding block for contradicting both ends of the spring and setting Link block on sliding block end face, the sliding block other end and baffle, which contradict, to be connected, and the opening of the shell is towards in shell It is arranged in diminishing prism-frustum-shaped, the sliding block is connected towards the one side for contradicting spring with spring conflict is contradicted, and sliding block is separate It contradicts spring one side to be obliquely arranged, and is slidably connected with shell on the end face of opening.

So set, when vertical collision prevention girders generate deformation, the active force in vertical collision prevention girders acts on sliding block by link block On, since the opening of shell and the end face of shoe contact are inclined-plane, when the power of link block one end becomes larger, two sliding blocks are gradual It is close, and the open end in shell is gradually slided into shell, while the conflict spring-compressed between two sliding blocks, pass through conflict The compression of spring can reach the effect for absorbing part impact force, have the function that buffering；Rear slider by inconsistent with baffle, So that baffle is in sliding in shell, while compressed spring being promoted to carry out the effect of compression energy-absorbing, reaches the mesh of multiple buffering energy-absorbing , improve the effect for indulging the whole slow energy-absorbing of buffering of Buffer Unit.

Further setting：It is provided with protrusion on the truss frame, the end face of the protrusion is by rear energy-absorption box with after Collision prevention girders connect, and an end of the buffer spring, which is set in the recess that raised other end is formed and is fixed with truss frame, to be connected It connects, the other end of buffer spring is fixedly connected with two interconnected buffer shaft, and the back buffer assembly is symmetrically disposed on protrusion Both sides.

So set, when back buffer beam receives shock, back buffer beam is pressurized, while acting 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 force when buffering collision of closed, simultaneously It can be played when playing buffer spring stress fixed slow with convenient for being clamped with buffer spring one end of the setting of protrusion, sunken inside The effect of spring is rushed, raised one end is used to support rear energy-absorption box, and the impact force that rear energy-absorption box passes over is dispersed to truss The both sides of frame reduce the problem of concentrating stress when vehicle rear-side is hit.

Further setting：The back buffer assembly includes support shaft and is arranged in parallel energy-absorbing spring with Impact direction, and two It is arranged at triangle between the support shaft and back buffer beam, and the connecting pin of two support shafts is connect with truss frame, the other end Be fixedly connected with back buffer beam, the energy-absorbing spring is set on the center line of triangle, and both ends respectively with the company of support shaft End is connect to be fixedly connected with back buffer beam.

So set, when back buffer beam is hit, impact force forward direction suffered by back buffer beam in back buffer assembly, Support shaft is arranged with back buffer beam at triangular shape shape at this time, and the stability of strutting system of back buffer assembly can be improved using Triangle Principle Can, while when energy-absorbing spring is pressurized, supporting axial both sides expansion, the effect for increasing forced area that auxiliary is contributed to inhale Supporting role when energy spring-compressed；The wherein a side for simultaneously supporting axis is connect with rear energy-absorption box, can be increased forced area, be carried High crashworthiness.

Further setting：Energy-absorption box includes the ontology of the corrugated setting of watchcase, is set to intrinsic spring after described Seat and the outer coil spring being set in spring base both ends of the surface, the two outer coil springs are connect with the madial wall of ontology respectively, Limited block is provided on the madial wall of the ontology, two limited blocks form the limit card slot for garter spring seat, and limit Position block is symmetrically disposed on the madial wall of the opposition of ontology two.

So set, undulatory ontology is convenient for the compression in rear energy-absorption box stress, while can be by part force dispersion To the effect of all directions, and intrinsic outer coil spring is when ontology generates deformation, and the outer coil spring of front end carries out buffering pressure The effect of contracting, the limit card slot that limited block is formed play the role of support front outer circle spring stress to spring base, work as limited block After stress to the limit, the outer circle spring stress of rear end compresses, and continues the effect that buffering is generated to hitting；Keep rear energy-absorption box better To the effect that back buffer beam is repeatedly buffered, rear vehicle end crashworthiness is improved.

Further setting：It is provided with angled seat on spring base, angle spring is provided in the angled seat, the angle spring Both ends are connect with ontology and angled seat respectively, and multiple angle springs are symmetrically set on the periphery of outer coil spring, and It is arranged in parallel with Impact direction.

So set, by being symmetrical arranged multiple angle springs in the both sides of outer coil spring, while by angled seat by angle spring Stable is installed between ontology and spring base, and angle spring is arranged in parallel with Impact direction, the energy-absorbing of energy-absorption box after raising Cushioning effect.

Further setting：The structural form of the solid box shell is using any one in oval box shell, polygon box shell Kind, it is several described in the partition board of the three-dimensional box shell being internally provided with for reinforcing three-dimensional box shell and fixed power battery pack Partition board transverse and longitudinal interleaved is arranged, and the bottom of three-dimensional box shell is provided with the supporting plate for support power battery pack.

So set, oval box shell design, on the one hand in vehicle, arc-shaped edges also mitigate chassis in motion when driving, vehicle Resistance caused by body chassis improves road holding；It is another face to face, vehicle when being hit, due to ellipse by When power, the angle tangent line between every section is in different angle, and impact force is scattered in all directions after stress, mitigates the office on chassis Portion's stress；Polygon box shell is arranged in three-dimensional box shell, increases each side in connected respective outer side edges intensity, in stress, leads to Existing angle between adjacent edge is crossed, the impact force being subject to is dispersed to all directions, when reaching mitigation but side stress Concentration force-bearing situation, improve and be located on the sub- chassis in middle part the security performance of occupant and dynamic within the sub- chassis in middle part Power battery pack；Increase shelf or partition board among three-dimensional box shell, on the one hand plays the structural strength for reinforcing three-dimensional box shell entirety On the other hand effect is also allowed for assisting fixed and management battery pack effect, be improved between three-dimensional babinet and power battery pack Layout；The cushion performance when shock of middle-end chassis system can be improved in the three-dimensional box shell of erection truss, in three-dimensional box shell Bottom increase supporting plate improve the stability of battery component to hold battery.

By using above-mentioned technical proposal, the present invention compares compared with the prior art：By equal in three systems of car body Corresponding Buffer Unit and corresponding connection structure are set, the design mounting structure of car body is increased, to vehicle when being hit with improving The crashworthiness of body, enables car body well to disperse impact force when being hit so that the personnel in occupant's frame It is protected well, the security performance of passengers inside the car when to improve shock, makes vehicle that integrally there is good structural strength And preferably have the function that hit buffering when being knocked, battery of the occupant on middle-end ontology is obtained To better protection, travel safer.

Description of the drawings

Fig. 1 is the structural schematic diagram of electric automobile chassis assembly anti-collision system；

Fig. 2 is the vertical view of electric automobile chassis assembly anti-collision system；（To remove occupant's frame, luggage cover board, cover plate etc. Some components）

Fig. 3 is the structural schematic diagram of leading chassis subsystem；

Fig. 4 is the attachment structure schematic diagram on total chassis in electric automobile chassis assembly anti-collision system；

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

Fig. 6 is that third is oriented to the vertical sectional view at mast axis in vertical Buffer Unit；

Fig. 7 is the structural schematic diagram 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：1, leading chassis subsystem；11, polygonal truss；111, upper layer；112, enging cabin；113, cover plate； 114, lower layer；115, longeron extension board；12, preceding energy-absorption box；13, front anti-collision beam；14, preceding Buffer Unit；15, first-level buffer area； 151, the first pilot beam；152, the first energy-absorption box；16, Secondary buffer；161, the second pilot beam；162, the second energy-absorption box；17、 Third energy-absorption box；18, front beam；2, middle-end chassis subsystem；21, power battery pack；22, three-dimensional box shell；221, partition board；222、 Supporting plate；23, longeron；24, collision prevention girders are indulged；25, connecting rod；26, casing；27, extension spring；28, Buffer Unit is indulged；281, shell Body；282, it is open；283, compressed spring；284, baffle；285, slide assemblies；286, spring is contradicted；287, sliding block；288, it connects Block；289, sliding slot；291, doorframe；292, inner support plate；293, the first guide post；294, the second guide post；295, rectangle truss； 296, bracing piece；297, the 5th energy-absorption box；298, mounting plate；3, rear end chassis subsystem；31, rear energy-absorption box；311, ontology； 312, outer coil spring；313, limited block；314, limit card slot；315, angled seat；316, angle spring；317, spring base；32, truss Frame；321, raised；33, buffer spring；331, the second buffer spring；34, buffer shaft；35, back buffer assembly；351, support shaft； 352, energy-absorbing spring；353, clamping block；354, fixed column；36, third guide post；37, back buffer beam；41, occupant's frame；42、 Pilot beam；43, luggage cover board；44, interior securing plate；45, connecting rod.

Specific implementation mode

Electric automobile chassis assembly anti-collision system is described further referring to figs. 1 to Fig. 9.

As shown in Figure 1, a kind of electric automobile chassis assembly anti-collision system, by be connected with each other for install steering, The leading chassis subsystem 1 of the equipment such as front-wheel, the middle-end chassis subsystem for carrying the equipment such as occupant, installation power transmission System 2, for installing trailing wheel, suspension, 3 three parts of the rear end chassis subsystem composition for supporting various equipment.

As shown in Figure 2, wherein leading chassis subsystem 1 includes into the mode of collapsing and polygon for buffering collision of closed is arranged Truss 11 is set on polygonal truss 11 using tough energy-absorbing material as much as possible by deforming absorption because hitting generation Huge energy preceding energy-absorption box 12 and connect with preceding energy-absorption box 12 and set towards one end of front anti-collision beam 13 in isosceles trapezoid shape The front anti-collision beam 13 set.

As shown in Figure 1, polygonal truss 11 divides for sequentially connected upper layer 111 and lower layer 114, and front anti-collision beam 13 is towards more One end of side shape truss 11 is arranged in isosceles trapezoid shape；Upper layer 111 include the enging cabin 112 that is connect with polygonal truss 11 with And the cover plate 113 for connecting with enging cabin 112 and being arranged in outstanding tower-like shape；Inner support plate 292 is provided in cover plate 113, if Dry inner support plate 292 is sequentially connected in M shapes；Lower layer 114 includes the longeron extension board 115 being connect with longeron 23.

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

As shown in Figures 2 and 3, preceding Buffer Unit 14 includes first-level buffer area 15 and Secondary buffer 16；First-level buffer area 15 include the first pilot beam 151 being arranged together with the waist Liangping of front anti-collision beam 13 and the first energy-absorption box 152 for buffering； First pilot beam 151 is by 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 is buffered with first Beam 151 is respectively at the both ends of the first energy-absorption box 152 and dislocation arrangement, while the first pilot beam 151 is set to front anti-collision beam 13 Inside side；Secondary buffer 16 includes the second pilot beam 161 being arranged concordant with longeron extension board 115 and both ends difference The second energy-absorption box 162 connected with the second pilot beam 161 and the dislocation of longeron extension board 115, while the second pilot beam 161 is set to The outside side of longeron extension board 115；Longeron extension board 115 is fixed with the both ends of third energy-absorption box 17 respectively with longeron 23 to be connected It connects, and longeron 23 is set to the inside of longeron extension board 115.

It ° inclination angle and is fixedly connected as shown in figure 3, being formed 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 Beam 161 is rushed 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 layer 111, lower layer 114 Buffer area is carried out, while repeatedly buffering or preventing secondary shock are carried out by the way that multiple buffer areas is arranged, with head-on crash The basis of multilayer Path of Force Transfer is arranged head-on crash multilayer Path of Force Transfer, energy is enable rationally and effectively to absorb and transmit；Front Collision Path of Force Transfer upper layer 111 is made of parts such as enging cabin 112 and cover plates 113, absorbs what part was transmitted from front Its complementary energy is simultaneously carried out dispersion transmission by collision energy on longeron 23 and its corresponding reinforcing beam；Lower layer 114 is mainly by indulging Beam extension board 115 and preceding Buffer Unit 14 form, while also including front anti-collision beam 13 and preceding energy-absorption box 12 etc., are main power transmissions Path；The collision energy received 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 transmitted toward dispersions such as longeron extension board 115, threshold, centre gangways, absorb the impact energy that is transmitted from front of part It measures and its complementary energy is transmitted to the dispersions such as longeron extension board 115 and threshold；So that multiplying on middle terminal chassis system Battery of the member within is preferably protected.

As shown in Figure 1, middle-end chassis subsystem 2 include power battery pack 21, for install power battery pack 21 and with it is dynamic Power battery pack 21 is in same level and its internal power battery pack 21 constitutes the three-dimensional box shell 22 of an entirety, setting In 22 both sides of three-dimensional box shell longeron 23, be set to three-dimensional box shell 22 top occupant's frame 41 and be set to occupant's frame On 41 and doorframe 291 that domed shape is outwardly protruding；Interior securing plate 44 is provided in doorframe 291, several interior securing plates 44 are in M Shape is sequentially connected, while several yielding rubber cushion blocks are filled in doorframe 291, improves cushion performance when doorframe 291 is hit, 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 box shell 22 uses any one in oval box shell, polygon box shell, Preferred ellipse box shell in this programme；In being internally provided with for reinforcing three-dimensional box shell 22 and fixed power electric for three-dimensional box shell 22 The partition board 221 of pond group 21, the setting of 221 transverse and longitudinal interleaved of several partition boards；Three-dimensional box shell 22 uses erection truss simultaneously, and vertical The bottom of body box shell 22 is provided with the supporting plate 222 for support power battery pack 21.

As shown in Figure 4 and Figure 5, it is connected with the vertical collision prevention girders 24 of domed shape setting on longeron 23, it is logical to indulge collision prevention girders 24 Polygonal truss 11 is crossed to connect with preceding energy-absorption box 12；It is both provided with connecting rod 25 at the both ends of vertical collision prevention girders 24, while in longeron Casing 26 is fixedly installed on 23, one end of two connecting rods 25 may be contained within being slidably connected in casing 26 and with casing 26, and two The end of connecting rod 25 is connected with each other by the extension spring 27 that original state is nature；It is generated by indulging collision prevention girders 24 Deformation makes two ends of vertical collision prevention girders 24 extend outwardly along both ends, promotes connecting rod 25 to be on longeron 23 and slide, is i.e. connecting rod 25 are in sliding in casing 26 with extension spring 27, and the deformation generated by extension spring 27 and vertical collision prevention girders 24 reaches energy-absorbing The effect of buffering.

As shown in fig. 6, in the vertical vertical Buffer Unit 28 being provided between collision prevention girders 24 and longeron 23 for buffering；Vertical buffering Component 28 can be placed equidistant with multiple；Vertical Buffer Unit 28 includes the shell that opening 282 is provided in hollow form setting and one end 281, the compressed spring 283 and be set to compression bullet that in shell 281 and one end is fixedly connected with the inner wall of shell 281 are set to 283 other end of spring and the inconsistent baffle 284 of the opening 282 for passing through compressed spring 283 and shell 281；In baffle 284 and shell The second guide post 294 is both provided on 281 madial wall, the both ends of compressed spring 283 are socketed in the second guide post 294, And it is fixedly connected respectively with shell 281 and baffle 284.

As shown in fig. 6, the side wall in the other end of shell 281 is provided with convenient for shell 281 to be installed on longeron 23 Mounting plate 298, mounting plate 298 are arranged in arcuation, and mounting plate 298 is symmetrically disposed on the two side of shell 281, and passes through setting It is threadedly coupled and realizes the fixation of shell 281 and the purpose on longeron 23 with longeron 23 in the bolt on mounting plate 298；Baffle 284 It is set in shell 281 and is slidably connected with the conflict of the inner wall of shell 281, while baffle 284 is by being set to baffle 284 and indulging Slide assemblies 285 between collision prevention girders 24 are connect with longeron 23.

As shown in fig. 6, slide assemblies 285 include contradict spring 286, be set to contradict the sliding block 287 at spring 286 both ends with And it is set to the link block 288 being slidably connected on 287 end face of sliding block and with sliding block 287；Is both provided on two sliding blocks 287 One guide post 293, contradict spring 286 both ends be socketed on respectively in the first guide post 293 of two sliding blocks 287 and with sliding block 287 It is fixedly connected；287 other end of sliding block is contradicted with baffle 284 by the vertical collision prevention girders 24 being connected on link block 288 and is connected；Shell The opening 282 of body 281 is arranged towards shell 281 is interior in diminishing prism-frustum-shaped, and baffle 284 is made to pass through the bullet of compressed spring 283 Property power baffle 284 be pressed in 282 end of opening of shell 281 contradicted with opening 282 and connect.

As shown in fig. 6, sliding block 287 contradicts connection towards the one side for contradicting spring 286 with spring 286 is contradicted, sliding block 287 is remote Obliquely it is arranged from 286 one side of spring is contradicted, and concordant with shell 281 on the end face of opening 282；In sliding block 287 On be provided with sliding slot 289, and link block 288 is set in sliding slot 289, by sliding block 287 towards in 281 internal direction of shell Apply pressure, promotes sliding block 287 to be in opening 282 and be slidably connected with shell 281, while link block 288 is in sliding slot 289 Sliding contradicts spring 286 and gradually reduces, final sliding block 287 be in the inside of shell 281 by contradict spring 286 return and The inner wall of shell 281 is inconsistent.

As shown in Figure 4 and Figure 5, rectangle truss 295 is provided on longeron 23, multiple rectangle truss 295 are set to vertical slow Rush the both sides of component 28；The middle-end that Buffer Unit 28 is in longeron 23 is indulged in this programme, two rectangle truss 295 are symmetrically disposed on vertical It the both sides of Buffer Unit 28 and is fixedly connected with longeron 23；It is both provided with bracing piece on the longest diagonal line of rectangle truss 295 296, the middle-end of four bracing pieces 296 converges on the central point of rectangle truss 295, and bracing piece 296 passes through 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 hit, impact force act on simultaneously vertical collision prevention girders 24 and On doorframe 291, doorframe 291 is by internal connection structure and corresponding buffer substance, to reach buffering and increase anticollision The effect of structure, while the part anticollision power that doorframe 291 can will act on doorframe 291 is transferred to occupant's frame 41 and stands In body box shell 22, have the function that dispersion；And 24 stress of vertical collision prevention girders of domed shape generates deformation, promote vertical collision prevention girders 24 to Both ends extend, and will be transmitted on preceding energy-absorption box 12 that anticollision power is connected to 24 both ends of vertical collision prevention girders, by preceding energy-absorption box 12 by big portion Point impact force absorb and split-up；It is set to the set that the connecting rod 25 in vertical collision prevention girders 24 is on longeron 23 simultaneously It is slid in cylinder, 27 stress of extension spring stretches, and can absorb portion of energy；Vertical collision prevention girders 24 generate deformation towards 23 direction of longeron When, vertical collision prevention girders 24 act on vertical Buffer Unit 28 simultaneously, and vertical collision prevention girders 24 are acted on by link block 288 on sliding block 287, Two sliding blocks 287 move closer to, and in shell 281 opening 282 on gradually slided into shell 281, while two sliding blocks 287 it Between conflict spring 286 compress, by contradict spring 286 compression can reach absorption part impact force effect；Sliding block simultaneously Active force is acted on baffle 284 again when sliding in 287 casees, baffle 284 is separated with opening 282, and then is in shell 281 It is inside slided, so that compressed spring 283 is in shell 281 and compressed, have the function that buffer again；Contradict spring 286 And compressed spring 283 is gradually compressed into row energy-absorbing, and final sliding block 287 is in the inside of shell 281 by contradicting spring The inner wall of 286 return and shell 281 is inconsistent, completes the buffering energy-absorbing function for indulging Buffer Unit 28.

As shown in fig. 7, rear end chassis subsystem 3 includes the rear energy-absorbing that back buffer beam 37, one end and back buffer beam 37 connect Box 31, the truss frame 32 being connect with 31 other end of rear energy-absorption box are set in truss frame 32 and one end connect with truss frame 32 Buffer spring 33, is set between occupant's frame 41 and back buffer beam 37 buffer shaft 34 for being set to 33 other end of buffer spring And the pilot beam 42 of arc-shaped setting and be set between back buffer beam 37 and truss frame 32 for buffering back buffer assembly 35。

As shown in figure 9, rear energy-absorption box 31 includes the ontology 311 of the corrugated setting of watchcase, the bullet being set in ontology 311 Spring abutment 317 and the outer coil spring 312 being set in 317 both ends of the surface of spring base；Two outer coil springs 312 are set to same straight line On, while clamping block 353 is provided on the madial wall of ontology 311, 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 on the madial wall of ontology 311, the formation of two limited blocks 313 is used for The limit card slot 314 of garter spring seat 317, and limited block 313 is symmetrically disposed on the madial wall of 311 liang of opposition of ontology, by bullet Spring abutment 317 is fixedly installed on the middle part of ontology 311.

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

As shown in figure 8, the interlude in truss frame 32 towards 37 connecting pin of back buffer beam is provided with protrusion 321, protrusion 321 End face is connect by rear energy-absorption box 31 with back buffer beam 37, and other end is arranged in recess；It is provided on the end face of recess One end of third guide post 36, buffer spring 33 is socketed in third guide post 36 and is fixedly connected with truss frame 32, another End is fixedly connected with two interconnected buffer shaft 34；The junction of two buffer shafts 34 is equally provided with corresponding third to be oriented to Column 36 makes buffer spring 33 be socketed in third guide post 36 and is fixedly connected with buffer shaft 34.

As shown in fig. 7, the end face of two buffer shafts 34 and truss frame 32 towards longeron 23 is arranged at triangle；It is buffering The 4th energy-absorption box is provided between axis 34 and longeron 23, buffer shaft 34 is respectively arranged at the 4th energy-absorption box both ends of the surface with longeron 23 On, and buffer shaft 34 is set to the inside of longeron 23；It is set on the center line for the triangle that buffer shaft 34 is formed with truss frame 32 It is equipped with the second buffer spring 331,331 both ends of the second buffer spring, which are fixed with the junction of buffer shaft 34 and truss frame 32, to be connected It connects.

As shown in fig. 7, back buffer assembly 35 is symmetrically disposed on the both sides of protrusion 321；Back buffer assembly 35 includes support shaft 351 and energy-absorbing spring 352 is arranged in parallel with Impact direction, at triangle cloth between two support shafts 351 and back buffer beam 37 It sets, the support shaft 351 of two composition triangle arrangements forms tetrapyamid shape, and the connecting pin of support shaft 351 connects with truss frame 32 It connects, the other end is fixedly connected with back buffer beam 37；Energy-absorbing spring 352 is set on the center line of rectangular pyramid, and energy-absorbing spring 352 Both ends are fixedly connected with the connecting pin of support shaft 351 and back buffer beam 37 respectively；In back buffer beam 37 towards the end face of truss frame 32 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, several connecting rods 45 connect successively in W shapes It connects and is set between truss frame 32 and pilot beam 42, the pilot beam that the impact force being subject on truss frame 32 is arranged by arcuation 42 have the function that all directions are disperseed；It is connected with luggage cover board 43 on occupant's frame 41, interior add is provided in luggage cover board 43 Solid plate 44, several interior securing plates 44 are sequentially connected in M shapes.

As shown in Fig. 2, 22 one end of three-dimensional box shell is connect with polygonal truss 11, it is in the polygon of isosceles trapezoid shape to make front end Truss 11 is connect with the oval box shell of middle-end, and front of the car is made, in gradual increased trend, to improve vehicle when driving with middle-end Cleanliness；And the tail portion of the other end is connect with rectangle truss 295, increases the shock cushion performance of rear vehicle end；It is vertical simultaneously anti- The one end for hitting beam 24 is connect by third energy-absorption box 17 with polygonal truss 11, and the other end passes through the 4th energy-absorption box and truss frame 32 Connection.

At least provided with two in the first energy-absorption box 152, the second energy-absorption box 162, third energy-absorption box 17, the 4th energy-absorption box Energy-absorbing muscle, and the axis of energy-absorbing muscle is vertically arranged with Impact direction；Several conquassation muscle are preset on each energy-absorption box simultaneously, with Just it allows each energy-absorption box to occur to be crushed in the axial direction and then absorbs all energy, to reduce the body shell including longeron 23 311 generate damage.

As shown in Figure 1 and Figure 7, when automobile is by the fierce collision come from rear portion, back buffer beam 37, which absorbs, hits kinetic energy It is resent to rear energy-absorption box 31, while back buffer assembly 35 plays good cushioning effect using the cushion performance of itself, absorbed The energy that part is hit, while caching most of energy；When the energy that truss frame 32 is when collapsing, and pilot beam 42 hits part It is dispersed to all angles of occupant's frame 41 by multiple directions, has the function that buffering, when truss frame 32 collapses to certain journey After degree, back buffer beam 37 is depressed into the effect of 33 enterprising row buffering of buffer spring decompression；33 other end of buffer spring by with truss The buffer shaft 34 that frame 32 forms triangle connects, and using the stability of triangle, is buffered when on the one hand can improve shock Stability between spring 33 and truss improves the bonding strength between truss frame 32 and buffer spring 33, reaches better Protect middle-end chassis subsystem 2 and occupant thereon and the power battery pack 21 in it, another aspect and the shock being subject to Power is dispersed to multiple directions, has the function that alleviation；Simultaneously in design by avoiding that the danger unfavorable to occupant may occur Deformation reduces the intrusion caused by rearward collision to cockpit and keeps relatively low collision deceleration, ensures occupant with this Safety.

As shown in Figure 1, being used as the basis of Path of Force Transfer by the structure of the passive anticollision of vehicle, by the impact force of vehicle body side It is respectively acting on polygonal truss 11, truss frame 32, each collision prevention girders, occupant's frame 41, threshold and doorframe 291, makes shock Power carries out the dispersion of multiple directions, acts on progress energy-absorbing and the enterprising row buffering of corresponding Buffer Unit on corresponding energy-absorption box Etc. modes reduce damage when shock, the impact force of vehicle is subjected to multi-direction reduction and repeatedly buffering, passes through each buffering Component and corresponding structure connection relation make the energy that part is hit be dispersed to multiple directions by corresponding connection relation The all angles of occupant's frame 41, while part impact force being absorbed by each Buffer Unit and is cached to reach slow The effect of punching makes vehicle have the effect of good structural strength and preferably reaches shock buffering when being knocked；To Protect middle-end chassis subsystem 2 and occupant thereon and the power battery pack 21 in it；By avoiding possibility in design The dangerous deformations unfavorable to occupant reduce the intrusion caused by rearward collision to cockpit and relatively low collision are kept to slow down Degree, ensures the safety of occupant with this, and battery of the occupant on vehicle middle-end is preferably protected, is travelled It is safer.

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

Claims (10)

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

The leading chassis subsystem（1）Include into the polygonal truss that the mode of collapsing is arranged（11）, be set to polygonal truss （11）On preceding energy-absorption box（12）And with preceding energy-absorption box（12）The front anti-collision beam of connection（13）, the polygonal truss（11）Point For sequentially connected upper layer（111）And lower layer（114）, the upper layer（111）Including with polygonal truss（11）Connection is started Cabin（112）And and enging cabin（112）Connection and the cover plate being arranged in outstanding tower-like shape（113）, the lower layer（114）Including With longeron（23）The longeron extension board of connection（115）, the longeron extension board（115）Pass through preceding energy-absorption box（12）With front anti-collision beam （13）Connection, the front anti-collision beam（13）With enging cabin（112）Connection, in the two longeron extension boards（115）Between be arranged There is preceding Buffer Unit（14）；

Middle-end chassis subsystem（2）Including power battery pack（21）, for installing power battery pack（21）And and power electric Pond group（21）Three-dimensional box shell in same level（22）And it is set to three-dimensional box 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 the vertical collision prevention girders（24）Both ends be both provided with Connecting rod（25）, in the longeron（23）On be fixedly installed casing（26）, two connecting rods（25）One end may be contained within Casing（26）Interior and and casing（26）It is slidably connected, and two connecting rods（25）End pass through extension spring（27）Mutually interconnect It connects, in the vertical collision prevention girders（24）With longeron（23）Between be additionally provided with vertical Buffer Unit for buffering（28）；

Rear end chassis subsystem（3）Including back buffer beam（37）, one end and back buffer beam（37）The rear energy-absorption box of connection （31）And rear energy-absorption box（31）The truss frame of other end connection（32）, be set to truss frame（32）Interior and one end and truss frame （32）The buffer spring of connection（33）And it is set to buffer spring（33）The buffer shaft of the other end（34）, two buffer shafts （34）With the truss frame（32）It is arranged at triangle, and two buffer shafts（34）Respectively at two longerons（23）Connection, and Collision prevention girders in the rear（37）With truss frame（32）Between be additionally provided with back buffer assembly for buffering（35）；The solid case Shell（22）One end and the polygonal truss（11）Connection, the other end and the truss frame（32）Connection, in the three-dimensional box shell （22）Top be provided with occupant's frame（41）, occupant's frame（41）With back buffer beam（37）Between pass through pilot beam（42） Connection, two pilot beams（42）It is symmetrically disposed on back buffer beam（37）On, the vertical collision prevention girders（24）One end with it is described preceding slow Rush component（14）Connection, the other end and the back buffer assembly（35）Connection.

2. electric automobile chassis assembly anti-collision system according to claim 1, it is characterised in that：The preceding Buffer Unit （14）Including first-level buffer area（15）And Secondary buffer（16）, the front anti-collision beam（13）Towards polygonal truss（11）One end It is arranged in isosceles trapezoid shape, the first-level buffer area（15）Including with front anti-collision beam（13）Waist Liangping be arranged together it is first slow Rush beam（151）And the first energy-absorption box for buffering（152）, first pilot beam（151）Pass through 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）Both ends and dislocation arrangement；The Secondary buffer（16）Including with longeron extension board（115）Second be concordantly arranged is slow Rush beam（161）And both ends respectively with the second pilot beam（161）With longeron extension board（115）Misplace the second energy-absorption box connected （162）, first pilot beam（151）With the second pilot beam（161）It is fixedly connected.

3. electric automobile chassis assembly anti-collision system according to claim 2, it is characterised in that：First pilot beam （151）It is set to front anti-collision beam（13）Inside side, second pilot beam（161）It is set to longeron extension board（115）To Outer side, the longeron extension board（115）With longeron（23）Respectively with third energy-absorption box（17）Both ends be fixedly connected, and it is vertical Beam（23）It is set to longeron extension board（115）Inside.

4. electric automobile chassis assembly anti-collision system according to claim 1, it is characterised in that：The vertical Buffer Unit （28）Including be in hollow form setting and one end be provided with opening（282）Shell（281）, be set to shell（281）Interior and one end With shell（281）The compressed spring that is fixedly connected of inner wall（283）And it is set to compressed spring（283）The other end and pass through pressure Contracting spring（283）With shell（281）Opening（282）Inconsistent baffle（284）, the shell（281）The other end with it is vertical Beam（23）Connection, the baffle（284）It is set to shell（281）Interior and and shell（281）Inner wall be slidably connected, the baffle （284）With vertical collision prevention girders（24）Between be provided with slide assemblies for buffering（285）.

5. electric automobile chassis assembly anti-collision system according to claim 4, it is characterised in that：The slide assemblies （285）Including contradicting spring（286）, be set to conflict spring（286）The sliding block at both ends（287）And it is set to sliding block（287） Link block on end face（288）, the sliding block（287）Other end and baffle（284）Contradict connection, the shell（281） Opening（282）Towards shell（281）It is interior to be arranged in diminishing prism-frustum-shaped, the sliding block（287）Towards conflict spring（286）'s One side and conflict spring（286）Contradict connection, sliding block（287）Far from conflict spring（286）One side is obliquely arranged, and In opening（282）End face on shell（281）It is slidably connected.

6. electric automobile chassis assembly anti-collision system according to claim 1, it is characterised in that：In the truss frame（32） On be provided with protrusion（321）, the protrusion（321）End face pass through rear energy-absorption box（31）With back buffer beam（37）Connection, institute State buffer spring（33）An end be set to protrusion（321）Other end formed recess in and with truss frame（32）It is fixed to connect It connects, buffer spring（33）The other end and two interconnected buffer shaft（34）It is fixedly connected, the back buffer assembly（35）It is right Title is set to protrusion（321）Both sides.

7. electric automobile chassis assembly anti-collision system according to claim 6, it is characterised in that：The back buffer assembly （35）Including support shaft（351）And energy-absorbing spring is arranged in parallel with Impact direction（352）, two support shafts（351）With it is rear Collision prevention girders（37）Between arranged at triangle, and two support shafts（351）Connecting pin and truss frame（32）Connection, the other end with Back buffer beam（37）It is fixedly connected, the energy-absorbing spring（352）Be set on the center line of triangle, and both ends respectively with support Axis（351）Connecting pin and back buffer beam（37）It is fixedly connected.

8. electric automobile chassis assembly anti-collision system according to claim 7, it is characterised in that：Energy-absorption box after described（31） Include the ontology of the corrugated setting of watchcase（311）, be set to ontology（311）Interior spring base（317）And it is set to spring Seat（317）Outer coil spring in both ends of the surface（312）, the two outer coil springs（312）Respectively with ontology（311）Madial wall connect It connects, in the ontology（311）Madial wall on be provided with limited block（313）, two limited blocks（313）It is formed and is used for clamping bullet Spring abutment（317）Limit card slot（314）, and limited block（313）It is symmetrically disposed on ontology（311）On the madial wall of two opposition.

9. electric automobile chassis assembly anti-collision system according to claim 8, it is characterised in that：In spring base（317）On It is provided with angled seat（315）, in the angled seat（315）On be provided with angle spring（316）, the angle spring（316）Both ends difference With ontology（311）And angled seat（315）Connection, multiple angle springs（316）Symmetrically it is set to outer coil spring（312）Circle On circumferential surface, and it is arranged in parallel with Impact direction.

10. electric automobile chassis assembly anti-collision system according to claim 1, it is characterised in that：The solid box shell （22）Structural form using any one in oval box shell, polygon box shell, in the three-dimensional box shell（22）Inside It is provided with for reinforcing three-dimensional box shell（22）And fixed power battery pack（21）Partition board（221）, several partition boards（221）It is horizontal Vertical interleaved setting, and in three-dimensional box shell（22）Bottom be provided with for support power battery pack（21）Supporting plate（222）.