CN106143646B - Electric car body substructure - Google Patents

Electric car body substructure Download PDF

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Publication number
CN106143646B
CN106143646B CN201610606309.4A CN201610606309A CN106143646B CN 106143646 B CN106143646 B CN 106143646B CN 201610606309 A CN201610606309 A CN 201610606309A CN 106143646 B CN106143646 B CN 106143646B
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CN
China
Prior art keywords
floor
sill strip
longitudinal
electric car
nutplate
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Application number
CN201610606309.4A
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Chinese (zh)
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CN106143646A (en
Inventor
朱浩
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Chery New Energy Automobile Co Ltd
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Chery New Energy Automobile Technology Co Ltd
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Priority to CN201610606309.4A priority Critical patent/CN106143646B/en
Publication of CN106143646A publication Critical patent/CN106143646A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20Floors or bottom sub-units
    • B62D25/2054Load carrying floors for commercial vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D21/00Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152Front or rear frames
    • B62D21/155Sub-frames or underguards

Abstract

The invention discloses a kind of electric car body substructures, including preceding Floor frame structure and rear Floor frame structure and front longitudinal beam, the preceding Floor frame structure includes front apron lower beam, a pair of of sill strip and rear floor front beam, front apron lower beam and rear floor front beam, which are located between a pair of of sill strip, forms front baffle, Floor frame structure includes rear floor front beam after described, longitudinal floor beam and rear Floor rear crossbeam after a pair, longitudinal floor beam, which is located between rear floor front beam and rear Floor rear crossbeam, after the pair of forms afterframe, the rear end of the front longitudinal beam is connected with front apron lower beam, the front apron lower beam, sill strip, floor front beam afterwards, longitudinal floor beam afterwards, Floor rear crossbeam and front longitudinal beam are hollow aluminium profile structure afterwards.All girder constructions use hollow aluminium profile structure, and light-weight, structural strength is big, and both collision effect and weight can combine.

Description

Electric car body substructure
Technical field
The present invention relates to electric vehicle engineering fields, more particularly, to a kind of electric car body substructure.
Background technique
Electric car has energy-saving and environment-friendly advantage as a kind of new-energy automobile, and electric car increasingly becomes automobile The hot spot of area research.The generally existing problem in electric car field is that accumulator of electric car course continuation mileage is limited at present, this Limit the popularization and application of electric car.
Existing bottom section of body is mostly steel construction, and weight is big, is unfavorable for electric car lightweight, unfavorable effective extension Electric car course continuation mileage, and metalwork production assembly and maintenance cost are higher, are unfavorable for reducing cost, are not able to satisfy energy conservation Environmental requirement;To reach crash requirements, structural member weight is big, and both collision effect and weight are difficult to combine.
Summary of the invention
In view of the shortcomings of the prior art, technical problem to be solved by the invention is to provide a kind of electric car body lower junctions Structure meets vehicle lightweight requirements, and guarantees structural strength.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is as follows:
The electric car body substructure, including preceding Floor frame structure and rear Floor frame structure and front longitudinal beam, The preceding Floor frame structure includes front apron lower beam, a pair of of sill strip and rear floor front beam, front apron lower beam and Floor front beam, which is located between a pair of of sill strip, afterwards forms front baffle, it is described after Floor frame structure include rear floor front beam, Longitudinal floor beam and rear Floor rear crossbeam after a pair, the pair of rear longitudinal floor beam are located at cross behind rear floor front beam and rear floor Afterframe is formed between beam, the rear end of the front longitudinal beam is connected with front apron lower beam, the front apron lower beam, sill strip, Floor front beam, rear longitudinal floor beam, rear Floor rear crossbeam and front longitudinal beam are hollow aluminium profile structure afterwards.
Further, it is connected between the rear end of the front longitudinal beam and front apron lower beam by inclined attachment beam.
The section of the front longitudinal beam is " 8 " font structure.
The front longitudinal beam includes front longitudinal beam back segment and front longitudinal beam leading portion, and the front longitudinal beam leading portion is connected with energy-absorption box, energy-absorption box It is equipped with anti-collision beam;The energy-absorption box and the equal aluminum component structure of anti-collision beam.
Seat beam is equipped in the front baffle between a pair of of sill strip, the seat beam is hollow aluminum profile knot Structure, the seat beam include seat front beam and seat rear cross beam, and the seat front beam is equipped with secondary instrument anti-rotation bracket, Seat rear cross beam is equipped with parking brake mounting base.
The battery fixing structure for fixing battery is equipped with inside the sill strip.
The front longitudinal beam is structure as a whole with attachment beam, and the two sides of attachment beam are equipped with the reinforcement being connected with front apron lower beam Beam, attachment beam and reinforcing beam are hollow aluminium profile structure.
The battery fixing structure includes that nutplate mounting bar and the battery being located on nutplate mounting bar install nutplate, Nutplate mounting bar is fixed on the bottom plate of sill strip, and bottom plate is equipped with corresponding logical with the screw hole in battery installation nutplate Hole.
Crumple groove is equipped on the front longitudinal beam leading portion and energy-absorption box.
The bottom plate of the sill strip is equipped with card slot, and nutplate mounting bar is inserted in card slot.
Compared with prior art, the present invention having the advantage that the electric car body design of substructure is reasonable, own Girder construction uses hollow aluminium profile structure, and light-weight, structural strength is big, and both collision effect and weight can combine, Be conducive to electric car lightweight, can effectively extend electric car course continuation mileage, reduces use cost.
Detailed description of the invention
Content expressed by each width attached drawing of this specification and the label in figure are briefly described below:
Fig. 1 is Floor frame structure lower part of the present invention schematic diagram.
Fig. 2 is Floor frame structure top of the present invention schematic diagram.
Fig. 3 is sill strip structural schematic diagram of the present invention.
Fig. 4 is the A-A cross-sectional view along Fig. 3.
Fig. 5 is the B-B cross-sectional view along Fig. 3.
Fig. 6 is sill strip decomposition diagram of the present invention.
Fig. 7 is front longitudinal beam of the present invention and front apron lower beam connection schematic diagram.
In figure:
1. front longitudinal beam back segment, 2. front apron lower beams,
3. sill strip, 301. seam allowance connecting plates, 302. lifting fixed frames, 303. nutplate mounting bars, the installation of 304. batteries Sealing plate before sealing plate, 307. behind nutplate, 305. rivets, 306.,
4. longitudinal floor beam behind floor front beam, 7. subframe mounting rails, 8. behind seat front beam, 5. seat rear cross beams, 6., It is examined before overhauling lid, 14. behind floor middle, 10., the reinforcement of rear Floor rear crossbeam 11. stringer, 12. web beams, 13. after 9. Repair ontology behind lid, 15. preceding floors, ontology, 18. secondary instrument anti-rotation brackets, 19. before ontology, 17. preceding floors in 16. preceding floors Parking brake mounting base, 20. front longitudinal beam leading portions, 21. energy-absorption boxes, 22. anti-collision beams.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of Explanation.
As shown in Figures 1 to 7, the electric car body substructure, including preceding Floor frame structure and rear floor frame Structure and front longitudinal beam, preceding Floor frame structure include front apron lower beam, a pair of of sill strip and rear floor front beam, front Plate lower beam and rear floor front beam are located between a pair of of sill strip and form front baffle, before rear Floor frame structure includes rear floor Crossbeam, it is a pair of after longitudinal floor beam and rear Floor rear crossbeam, it is the pair of after longitudinal floor beam be located at rear floor front beam with afterwards Afterframe is formed between plate rear cross beam, the rear end of front longitudinal beam is connected with front apron lower beam, front apron lower beam, sill strip, after Floor front beam, rear longitudinal floor beam, rear Floor rear crossbeam and front longitudinal beam are hollow aluminium profile structure.
It is connected between the rear end of front longitudinal beam and front apron lower beam 2 by inclined attachment beam.Pass through inclined attachment beam The rear end of front longitudinal beam is connected by transition with front apron lower beam.Front longitudinal beam is connected with the floor frame assembly at rear, central collision In the process, front longitudinal beam stress can pass in preceding Floor frame structure and rear Floor frame structure, guarantee collision effect.
Front longitudinal beam on vehicle body is higher than front apron lower beam 2, i.e. the attachment beam lower section that is located at front longitudinal beam, before central collision in the process The longitudinal force of stringer transmitting, front longitudinal beam are structure as a whole with attachment beam, and structural strength is able to satisfy crash requirements.
Front longitudinal beam includes front longitudinal beam back segment 1 and front longitudinal beam leading portion 20, and front longitudinal beam leading portion is connected with energy-absorption box 21, and energy-absorption box is located at The front of front longitudinal beam leading portion, energy-absorption box 21 are equipped with anti-collision beam 22;Energy-absorption box 21 and the equal aluminum component structure of anti-collision beam 22.Energy-absorbing The section of box and front longitudinal beam is " 8 " font structure, light-weight, there is another fixed structural strength.
The two sides of attachment beam are equipped with the reinforcing beam being connected with front apron lower beam, and attachment beam and reinforcing beam are hollow aluminium Profile structure.
Crumple groove is equipped on front longitudinal beam leading portion 20 and energy-absorption box 21.After energy-absorption box 21 and front longitudinal beam leading portion and front longitudinal beam Section forms three-stage structure, and the structural strength of front first segment energy-absorption box is less than the structural strength of front longitudinal beam leading portion, front longitudinal beam leading portion Structural strength be less than the structural strength of front longitudinal beam back segment, form preceding two sections and gone for crumple, latter section to stablize conducting region, it is preceding to indulge Beam rear has preferable central collision effect, and light-weight, is conducive to electricity by whole forward and backward Floor frame structure support Electrical automobile lightweight can effectively extend electric car course continuation mileage, reduce use cost.
Front floor of electric vehicle frame structure, including front apron lower beam 2, a pair of of sill strip 3, rear floor front beam 6, In, preceding floor, cross under front apron are equipped in the front baffle that front apron lower beam 2, a pair of of sill strip 3, rear floor front beam 6 are formed Beam 2, a pair of of sill strip 3, rear floor front beam 6 are hollow aluminium profile structure, and preceding floor is aluminium sheet structure.Aluminum profile passes through Mold extrusion molding, weight is small, and structural strength is big, is conducive to electric car lightweight, can effectively extend in electric car continuation of the journey Journey can reduce use cost.
Seat beam is equipped in front baffle between a pair of of sill strip, seat beam is hollow aluminium profile structure.Seat Crossbeam includes seat front beam 4 and seat rear cross beam 5, and seat front beam 5 is equipped with secondary instrument anti-rotation bracket 18, secondary instrument anti-rotation Bracket 18 is u-bracket, and secondary instrument rear end is fixed, and prevents secondary instrument from rotating;Seat rear cross beam 5 is installed equipped with parking brake Seat 19.Secondary instrument anti-rotation bracket 18 and parking brake mounting base 19 are aluminum component structure, light-weight.
Front apron lower beam 2, seat front beam 4, seat rear cross beam 5, rear floor front beam 6 are mutually arranged in parallel, preceding Baffle lower beam, seat rear cross beam, is equipped with reinforcing rib inside rear floor front beam at seat front beam, and structural strength is big.
Front apron lower beam 2 is connected with front longitudinal beam back segment 1.Front longitudinal beam back segment 1 is hollow aluminium profile structure.Automobile central collision When, before being transferred force to by front longitudinal beam in Floor frame structure, and to the battery shape below Floor frame structure before being located at At protection, central collision effect is improved.
Before the power battery of electric car is located at below Floor frame structure, it is equipped with inside sill strip 3 for fixing battery Battery fixing structure.Battery fixing structure is arranged inside sill strip, and tradition is arranged outside sill strip relatively, stable structure Reliably, and sill strip lower space is saved.
It is equipped in sill strip 3 for the reinforcing rib by sill strip inside division at one group of cavity.Battery fixing structure is located at It in the cavity of sill strip ontology bottom, that is, is mounted on the bottom plate of sill strip, the structure for improving sill strip by reinforcing rib is strong Degree, to be attained by requirement to the protection of battery module when forming reliable protection, side impact and central collision to battery fixing structure.
Battery fixing structure includes nutplate mounting bar 303 and the battery being located on nutplate mounting bar installation nutplate 304, nutplate mounting bar 303 is fixed on the bottom plate of sill strip, and bottom plate is equipped with and the screw hole phase in battery installation nutplate Corresponding through-hole.
The bottom plate of sill strip 3 is equipped with card slot, and nutplate mounting bar 303 is inserted in card slot, and the installation of nutplate mounting bar is torn open Simplicity is unloaded, follow-up maintenance is facilitated.Nutplate mounting bar 303 is equipped with a pair of of clamp, and battery installation nutplate 304 is stuck in a pair of of card In son, battery installs nutplate simple installation, and battery installs nutplate and is equipped with project-welding nut.All parts are individual components, By fitting together, structure is simple, easy to process, low manufacture cost, replaces convenient for subsequent maintenance.
It is one group that battery, which installs nutplate 304, and uniform intervals are located on nutplate mounting bar, nutplate mounting bar insertion card After slot, nutplate mounting bar both ends are fixed on the bottom plate of sill strip by the rivet 305 of core pulling.Bolt on battery frame with Screw hole in battery installation nutplate matches, and battery is fixed, sill strip uniform force, and battery is fixed reliable.And Entire battery fixing structure is located in sill strip, is not take up exterior space, facilitates installation.
3 top of sill strip is equipped with hollow protrusion, and protrusion is structure as a whole with sill strip ontology.The both ends of sill strip ontology It is equipped with sealing plate, sealing plate is respectively preceding sealing plate 307 and rear sealing plate 306, and two sealing plates are aluminium sheet, and weight is small.The protrusion of sill strip It is equipped with lower part seam allowance, and is located at raised one end equipped with the seam allowance connecting plate for being connected with the side seam allowance in A column flowering structure 301, improve the structural strength of seam allowance.
It is equipped with lifting fixed frame 302 below 3 both ends of sill strip, that is, lifts the bottom that fixed frame is fixed on the bottom plate of sill strip On face, nutplate mounting bar is staggered with lifting fixed frame upper and lower position, and lifting fixed frame is arranged by the outside of sill strip, nutplate Mounting bar is arranged by the inside of sill strip, guarantees the structural strength of sill strip, lifting fixed frame is aluminium profile structure, light-weight.
Two lifting fixed frames 302 are located at the both ends of sill strip, tie wherein the lifting fixed frame for being located at front is located under A column The underface of structure is located at the underface of B column positioned at the lifting fixed frame at rear portion, when being lifted by lifting fixed frame to vehicle body, two The stress of end lifting fixed frame passes through sill strip respectively and passes in A column flowering structure and B column, and reliable and stable, sill strip is not pliable Song deformation.
It is ontology 17 before preceding floor, seat front beam and seat rear cross beam between front apron lower beam 2 and seat front beam 4 It is ontology 15 behind preceding floor between seat rear cross beam and rear floor front beam for ontology 16 in preceding floor.Preceding floor is divided into three Independent sector guarantees the structural strength on floor.
Preceding Floor frame structure and rear Floor frame structure form entire Floor frame structure, it is ensured that whole structure is strong Degree.
Floor frame structure afterwards, including rear floor front beam 6, a pair of of subframe mounting rail 7, it is a pair of after longitudinal floor beam 8 with And rear Floor rear crossbeam 10;Wherein, longitudinal floor beam 8 is located at shape between rear floor front beam 6 and rear Floor rear crossbeam 10 after a pair At frame, i.e., rear longitudinal floor beam front end is welded on rear floor front beam, and rear longitudinal floor beam rear end is welded on rear Floor rear crossbeam On.
Floor front beam 6, subframe mounting rail 7, rear longitudinal floor beam 8 and rear Floor rear crossbeam 10 are hollow aluminium afterwards Profile structure, for aluminium profile structure by mold extrusion molding, weight is small, and structural strength is big, is conducive to electric car lightweight, can Effectively extend electric car course continuation mileage, reduces use cost.
The end of floor front beam 6 is welded on the rear portion of sill strip 3 on vehicle body, 7 one end of subframe mounting rail and threshold afterwards 3 rear end of beam is connected, and the subframe mounting rail other end is connected with the front of rear longitudinal floor beam, improves structural strength.
Rear floor middle 9 is equipped with after a pair between longitudinal floor beam 8, correspondence is respectively welded in the both ends of rear floor middle 9 Rear longitudinal floor beam on, rear floor middle is parallel with rear Floor rear crossbeam and rear floor front beam.Floor middle afterwards It also is hollow aluminium profile structure.
The floor between floor middle and rear Floor rear crossbeam is bolted on crossbeam afterwards, and lid is overhauled after formation 13, rear maintenance lid is detachable, and the convenient component to below rear maintenance lid overhauls.
It is equipped between floor middle and rear floor front beam afterwards and reinforces stringer 11.Reinforce between stringer and rear longitudinal floor beam Floor fixed also by bolt, lid 14 is overhauled before being formed, rear lid of overhauling is detachable, it is convenient to rear maintenance lid below Component is overhauled.
Overhauling lid 13 and preceding maintenance lid 14 afterwards is aluminium sheet structure, and equipped with reinforcing rib in two lids, will after Floor is divided into several independent sectors, and light-weight, structural strength is big.It overhauls lid afterwards and preceding maintenance lid is dismountable lid Plate can disassemble when needing, convenient for below rear floor motor and the various control units of motor overhaul.
Reinforce being equipped with web beam 12 between stringer and rear longitudinal floor beam.It is parallel with rear longitudinal floor beam to reinforce stringer, adds Deck transverse is parallel with rear floor front beam, reinforces stringer and web beam is hollow aluminium profile structure, it is strong to improve structure Degree.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way Limitation, if use the improvement for the various unsubstantialities that conception and technical scheme of the invention carry out, or it is not improved will Conception and technical scheme of the invention directly apply to other occasions, within the scope of the present invention.

Claims (7)

1. a kind of electric car body substructure, including preceding Floor frame structure and rear Floor frame structure and front longitudinal beam, The preceding Floor frame structure includes front apron lower beam, a pair of of sill strip and rear floor front beam, front apron lower beam and Floor front beam, which is located between a pair of of sill strip, afterwards forms front baffle, it is described after Floor frame structure include rear floor front beam, Longitudinal floor beam and rear Floor rear crossbeam after a pair, the pair of rear longitudinal floor beam are located at cross behind rear floor front beam and rear floor Afterframe is formed between beam, it is characterised in that: the rear end of the front longitudinal beam is connected with front apron lower beam, horizontal under the front apron Beam, sill strip, rear floor front beam, rear longitudinal floor beam, rear Floor rear crossbeam and front longitudinal beam are hollow aluminium profile structure;
The battery fixing structure for fixing battery is equipped with inside the sill strip;The battery fixing structure includes nutplate peace Dress item and the battery being located on nutplate mounting bar installation nutplate, nutplate mounting bar are fixed on the bottom plate of sill strip, bottom Plate is equipped with through-hole corresponding with the screw hole in battery installation nutplate;
The bottom plate of the sill strip is equipped with card slot, and nutplate mounting bar is inserted in card slot;
It is one group that battery, which installs nutplate, and uniform intervals are located on nutplate mounting bar, after nutplate mounting bar is inserted into card slot, spiral shell Motherboard mounting bar both ends are fixed on the bottom plate of sill strip by the rivet of core pulling.
2. electric car body substructure as described in claim 1, it is characterised in that: the rear end of the front longitudinal beam and front apron It is connected between lower beam by inclined attachment beam.
3. electric car body substructure as described in claim 1, it is characterised in that: the section of the front longitudinal beam is " 8 " word Type structure.
4. electric car body substructure as described in claim 1, it is characterised in that: the front longitudinal beam includes front longitudinal beam back segment With front longitudinal beam leading portion, the front longitudinal beam leading portion is connected with energy-absorption box, and energy-absorption box is equipped with anti-collision beam;The energy-absorption box and anticollision are horizontal The equal aluminum component structure of beam.
5. electric car body substructure as described in claim 1, it is characterised in that: in a pair of of sill strip in the front baffle Between be equipped with seat beam, the seat beam be hollow aluminium profile structure, the seat beam include seat front beam and Seat rear cross beam, the seat front beam are equipped with secondary instrument anti-rotation bracket, and seat rear cross beam is equipped with parking brake mounting base.
6. electric car body substructure as claimed in claim 2, it is characterised in that: the front longitudinal beam is integrated with attachment beam Structure, the two sides of attachment beam are equipped with the reinforcing beam being connected with front apron lower beam, and attachment beam and reinforcing beam are hollow aluminium profiles Material structure.
7. electric car body substructure as claimed in claim 4, it is characterised in that: on the front longitudinal beam leading portion and energy-absorption box It is equipped with crumple groove.
CN201610606309.4A 2016-07-29 2016-07-29 Electric car body substructure Active CN106143646B (en)

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CN106143646B true CN106143646B (en) 2019-03-19

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WO2018163815A1 (en) * 2017-03-10 2018-09-13 マツダ株式会社 Lower vehicle body structure for vehicle
CN109204561B (en) * 2017-06-30 2020-08-07 比亚迪股份有限公司 Vehicle body structure and vehicle
CN109204467B (en) * 2017-06-30 2021-02-23 比亚迪股份有限公司 Vehicle body structure and vehicle
CN109204557B (en) * 2017-06-30 2021-11-12 比亚迪股份有限公司 Vehicle body structure and vehicle
CN109204477B (en) * 2017-06-30 2020-11-20 比亚迪股份有限公司 Vehicle body structure and vehicle
CN107539166B (en) * 2017-08-23 2019-09-17 浙江英伦汽车有限公司 Seat mounting bracket and its assemble method
CN109895866A (en) * 2017-12-08 2019-06-18 蔚来汽车有限公司 Floor panel structure, aluminium alloy extruded molded part and vehicle before vehicle
CN108082287B (en) * 2017-12-20 2020-10-27 奇瑞新能源汽车股份有限公司 Half-bearing type frame structure of electric logistics vehicle
FR3082494B1 (en) * 2018-06-19 2021-05-14 Psa Automobiles Sa MOTOR VEHICLE CHASSIS, INCLUDING A MEANS OF DISTRIBUTION AGAINST A TUNNEL OF A FORCE APPLIED BY A CROSSMOUNT IN THE EVENT OF SIDE IMPACT.
CN112537370B (en) * 2020-12-10 2022-07-22 奇瑞新能源汽车股份有限公司 Vehicle front longitudinal assembly and vehicle
CN112896323B (en) * 2021-02-05 2022-06-21 奇瑞新能源汽车股份有限公司 Cage-shaped framework structure of vehicle body

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