CN112278073A - Rear longitudinal beam structure and hydrogen fuel cell automobile - Google Patents

Rear longitudinal beam structure and hydrogen fuel cell automobile Download PDF

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Publication number
CN112278073A
CN112278073A CN202011348484.0A CN202011348484A CN112278073A CN 112278073 A CN112278073 A CN 112278073A CN 202011348484 A CN202011348484 A CN 202011348484A CN 112278073 A CN112278073 A CN 112278073A
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CN
China
Prior art keywords
longitudinal beam
rear longitudinal
fuel cell
hydrogen fuel
upper rear
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011348484.0A
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Chinese (zh)
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CN112278073B (en
Inventor
谭尊有
郝义国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Grove Hydrogen Automobile Co Ltd
Wuhan Grove Hydrogen Energy Automobile Co Ltd
Original Assignee
Wuhan Grove Hydrogen Energy Automobile Co Ltd
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Application filed by Wuhan Grove Hydrogen Energy Automobile Co Ltd filed Critical Wuhan Grove Hydrogen Energy Automobile Co Ltd
Priority to CN202011348484.0A priority Critical patent/CN112278073B/en
Publication of CN112278073A publication Critical patent/CN112278073A/en
Application granted granted Critical
Publication of CN112278073B publication Critical patent/CN112278073B/en
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Classifications

    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03Fuel tanks
    • B60K15/063Arrangement of tanks
    • B60K15/067Mounting of tanks
    • B60K15/07Mounting of tanks of gas tanks
    • 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
    • B62D25/2009Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2027Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures

Abstract

The invention relates to the technical field of hydrogen fuel cell automobiles, in particular to a rear longitudinal beam structure and a hydrogen fuel cell automobile. The rear longitudinal beam structure comprises an upper rear longitudinal beam, a lower rear longitudinal beam and a lower longitudinal beam joint, the front portion of the upper rear longitudinal beam is fixedly connected with the upper surface of the lower longitudinal beam joint, the front portion of the lower rear longitudinal beam is fixedly connected with the lower longitudinal beam joint, the lower rear longitudinal beam is positioned right below the upper rear longitudinal beam, and a first vertical second force rod and a second vertical second force rod are arranged between the upper rear longitudinal beam and the lower rear longitudinal beam. The hydrogen fuel cell automobile comprises an automobile body and a hydrogen bottle, wherein the hydrogen bottle is arranged below the rear floor, two rear longitudinal beam structures are arranged in the automobile body, two upper rear longitudinal beams are respectively attached to two sides of the lower surface of the rear floor in the two rear longitudinal beam structures, the two upper rear longitudinal beams are connected between the front portions of the two upper rear longitudinal beams and between the middle portions of the two upper rear longitudinal beams through rear floor cross beams, and the anti-collision beam is connected between the rear portions of the two lower rear longitudinal beams. The invention not only meets the requirements of the laws and regulations, but also can completely meet the performance requirements of the hydrogen fuel cell automobile on the rear longitudinal beam structure.

Description

Rear longitudinal beam structure and hydrogen fuel cell automobile
Technical Field
The invention relates to the technical field of hydrogen fuel cell automobiles, in particular to a rear longitudinal beam structure and a hydrogen fuel cell automobile.
Background
With the increasing requirements of the nation on energy conservation and emission reduction of automobiles, hydrogen fuel cell automobiles with light automobile body structures are gradually emerging. An important device of a hydrogen fuel cell vehicle is a high-pressure gas cylinder for storing hydrogen, and in order to fully utilize the existing space, it is considered that a large-capacity hydrogen cylinder is arranged at the lower part of a rear floor in a vehicle body, and the large-capacity hydrogen cylinder is arranged at the position, so that the height of the rear floor and a rear longitudinal beam attached to the rear floor are inevitably raised. However, the rear longitudinal beam must consider the anti-collision beam connected at the rear part of the rear longitudinal beam, the height of the anti-collision beam cannot be raised due to the regulation requirement, so that the rear longitudinal beam cannot be raised, the rear floor and the rear longitudinal beam cannot be directly attached together, and the rear floor and the rear longitudinal beam are in a suspension state, so that the traditional rear longitudinal beam cannot meet the requirement of the hydrogen fuel cell automobile on the aspect of structural performance.
Disclosure of Invention
The invention aims to provide a rear longitudinal beam structure and a hydrogen fuel cell automobile aiming at the existing technical situation, and provides a new rear longitudinal beam design scheme by combining the suspension state between a rear floor and a rear longitudinal beam when the hydrogen fuel cell automobile arranges hydrogen bottles, so that the rear longitudinal beam structure not only meets the requirements of regulations, but also can completely meet the performance requirements of the hydrogen fuel cell automobile on the rear longitudinal beam structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a back longeron structure, includes that last back longeron, back longeron and longeron down connect, goes up the front portion of back longeron and longeron down and connects upper surface fixed connection, and back longeron front portion and longeron down connect fixed connection and back longeron lie in under the back longeron down, go up and be equipped with first vertical second power pole and the vertical second power pole of second between back longeron and the back longeron down.
Furthermore, the first vertical second force rod and the second vertical second force rod are in an inverted splayed shape.
The utility model provides a hydrogen fuel cell car, includes automobile body and hydrogen cylinder, and the hydrogen cylinder sets up the below on back floor, be equipped with two back longeron structures in the automobile body, in two back longeron structures, two back longerons laminate respectively and set up in back floor lower surface both sides, connect through the back floor crossbeam between two back longeron front portions and between two back longeron middle parts, and the anticollision roof beam is connected between two back longeron rear portions down.
Furthermore, the upper rear longitudinal beam is made of carbon fiber composite materials, and the two flanges on the upper side of the upper rear longitudinal beam are bonded with the rear floor through adhesives to form a closed cavity beam.
Furthermore, the rear part of the upper rear longitudinal beam is bonded with the rear wall cross beam through an adhesive.
Furthermore, the outer side flanging of the front part of the upper rear longitudinal beam is connected with the wheel cover inner plate in an overlapping mode, and the outer side flanging and the wheel cover inner plate are bonded through adhesive.
Furthermore, the upper rear longitudinal beam is connected with the side wall inner plate through an L-shaped reinforcing part to form a closed cavity.
Furthermore, the lower longitudinal beam joint is an aluminum alloy die casting, the upper rear longitudinal beam and the lower longitudinal beam joint are bonded through an adhesive and connected through a bolt, and the lower rear longitudinal beam and the lower longitudinal beam joint are connected through a bolt.
Furthermore, the lower longitudinal beam joint is provided with an interface, and the lower rear longitudinal beam is connected with the lower longitudinal beam joint in an inserting mode.
Furthermore, the lower rear longitudinal beam is made of aluminum alloy sections, and a flange edge is arranged at the rear part of the lower rear longitudinal beam.
The invention has the beneficial effects that:
this back longeron structure divide into about two-layer, and set up two vertical two power poles between last back longeron and the back longeron down, form a stable frame construction, be equipped with two back longeron structures in the automobile body, in two back longeron structures, two back longerons laminate respectively and set up in back floor lower surface both sides, connect through the back floor crossbeam between two back longeron front portions and between two back longeron middle parts, the anticollision roof beam is connected between two back longeron rear portions down, new back longeron design not only accords with the law requirement, still can satisfy the performance demand of hydrogen fuel cell car to back longeron structure completely, in addition, this back longeron structure has adopted combined material's design, lightweight demand has been realized.
Drawings
FIG. 1 is a schematic structural view of the tail of an automobile body (hydrogen-containing bottle, looking up from the bottom of the automobile) according to the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 of the present invention (as viewed from the left to the right of the vehicle);
FIG. 3 is a schematic structural view of the tail of the automobile body (no hydrogen bottle, looking up from the bottom of the automobile);
FIG. 4 is a cross-sectional view taken at B-B of FIG. 3 of the present invention (as viewed from the left to the right of the vehicle);
FIG. 5 is a cross-sectional view taken at C-C of FIG. 4 of the present invention (as viewed from the rear to the front of the vehicle);
fig. 6 is a cross-sectional view (looking forward from the rear of the vehicle) taken at D-D of fig. 4 in accordance with the present invention.
Description of the labeling: 1. the hydrogen bottle, 2, the back floor, 3, the anticollision roof beam, 4, the lower longitudinal beam joint, 5, the lower back longitudinal beam, 6, the back floor crossbeam, 7, first vertical two power poles, 8, the second vertical two power poles, 9, the energy-absorbing box, 10, the back wall crossbeam, 11, the upper back longitudinal beam, 12, the side wall, 13, the side wall planking, 14, the side wall inner panel, 15, L type reinforcement, 16, the wheel casing inner panel.
Detailed Description
The invention will be further explained with reference to the drawings.
Example 1:
referring to fig. 4, a rear longitudinal beam structure includes an upper rear longitudinal beam 11, a lower rear longitudinal beam 5 and a lower longitudinal beam joint 4, a front portion of the upper rear longitudinal beam 11 is fixedly connected to an upper surface of the lower longitudinal beam joint 4, a front portion of the lower rear longitudinal beam 5 is fixedly connected to the lower longitudinal beam joint 4, the lower rear longitudinal beam 5 is located right below the upper rear longitudinal beam 11, a first vertical secondary force rod 7 and a second vertical secondary force rod 8 are disposed between the upper rear longitudinal beam 11 and the lower rear longitudinal beam 5, the first vertical secondary force rod 7, the upper rear longitudinal beam 11, the lower rear longitudinal beam 5, the second vertical secondary force rod 8, the upper rear longitudinal beam 11, the lower rear longitudinal beam 5, the first vertical secondary force rod 7 and the second vertical secondary force rod 8 are connected by bolts, and the upper rear longitudinal beam 11, the lower rear longitudinal beam 5, the first vertical secondary force rod 7 and the second vertical secondary force. Preferably, the first vertical second force rod 7 and the second vertical second force rod 8 are in an inverted splayed shape, so that the stability of the rear longitudinal beam structure is further enhanced.
Example 2:
referring to fig. 1-4, a hydrogen fuel cell vehicle comprises a vehicle body and a hydrogen bottle 1, wherein the vehicle body comprises a rear floor 2, a rear floor cross beam 6, a rear wall cross beam 10, a wheel cover inner plate 16, a side wall 12, a side wall inner plate 14, a side wall outer plate 13, an anti-collision beam 3, an energy absorption box 9 and other structures, the hydrogen bottle 1 is arranged below the rear floor 2, two rear longitudinal beam structures are arranged in the vehicle body, in the two rear longitudinal beam structures, two upper rear longitudinal beams 11 are respectively attached to two sides of the lower surface of the rear floor 2, the front parts of the two upper rear longitudinal beams 11 and the middle parts of the two upper rear longitudinal beams 11 are connected through the rear floor cross beam 6, so that the two upper rear longitudinal beams 11 and the rear floor 2 form a stable frame structure in a horizontal plane, and the anti-collision beam 3 is.
The frame structure formed by the upper rear longitudinal beam 11, the lower rear longitudinal beam 5, the first vertical secondary force rod 7 and the second vertical secondary force rod 8 supports the load caused by the hydrogen bottle 1 arranged below the rear floor 2 together, so that the lower rear longitudinal beam 5 is prevented from vibrating, and the supporting effect of the upper rear longitudinal beam 11 on the rear floor 2 is enhanced.
It is worth mentioning that the height of the lower rear side member 5 should be as high as the regulations allow to reduce its distance from the upper rear side member 11.
The upper rear longitudinal beam 11 is made of carbon fiber composite materials. As shown in fig. 5, the two flanges on the upper side of the upper rear longitudinal beam 11 are bonded to the rear floor 2 by an adhesive to form a closed cavity beam, so as to improve the structural stability and the anti-torsion capability of the upper rear longitudinal beam 11, and fig. 5 also shows the relative position of the upper rear longitudinal beam 11 and the lower rear longitudinal beam 5. As shown in fig. 4, the rear portion of the upper rear side member 11 is bonded to the rear wall cross member 10 by an adhesive. As shown in fig. 6, the outside flanges at the front part of the upper rear longitudinal beam 11 are connected with the wheel cover inner plate 16 in a lap joint manner and are bonded with each other by adhesives, so that the load borne by the wheel cover is transferred to the upper rear longitudinal beam 11, and the load borne by the upper rear longitudinal beam 11 from the rear floor 2 is transferred to the wheel cover, and fig. 6 also shows the connection relationship between the lower longitudinal beam joint 4 and the upper rear longitudinal beam 11. As shown in fig. 4 and 5, the upper rear longitudinal beam 11 and the side wall inner panel 14 are connected by the L-shaped reinforcement 15 to form a closed cavity, so as to improve the connection performance between the side wall 12 and the rear floor 2, and facilitate the load on the rear floor 2 to be transferred to the side wall 12 through the closed cavity.
The lower longitudinal beam joint 4 is an aluminum alloy die casting. As shown in fig. 6, the upper rear side member 11 and the lower side member joint 4 are bonded by adhesive and bolted. 3-4, the lower rear longitudinal beam 11 is connected with the lower longitudinal beam joint 4 through a bolt. Preferably, the lower longitudinal beam joint 4 is provided with an interface, and the lower rear longitudinal beam 5 is connected with the lower longitudinal beam joint 4 in an insertion mode.
The lower rear longitudinal beam 5 is made of an aluminum alloy section. Referring to fig. 4, the rear part of the lower rear longitudinal beam 5 is provided with a flange edge to facilitate the connection with the energy absorption box 9 of the impact beam 3.
Among the above-mentioned design, new back longeron design not only accords with the legislation requirement, still can satisfy the performance demand of hydrogen fuel cell car to the back longeron structure completely, in addition, adopts carbon-aluminum mixed structure to realize for the steel sheet structure that great range subtracts the weight, has reached the demand of lightweight, simultaneously, in order to adapt to the connection of mixed material structure, has adopted the connection form that mechanical connection and cementing combined together again.
It should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, therefore, all equivalent changes in the principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A rear longitudinal beam structure is characterized in that: the upper back longitudinal beam, the lower back longitudinal beam and the lower longitudinal beam are connected, the front portion of the upper back longitudinal beam is fixedly connected with the upper surface of the lower longitudinal beam, the front portion of the lower back longitudinal beam is fixedly connected with the lower longitudinal beam, the lower back longitudinal beam is positioned right below the upper back longitudinal beam, and a first vertical second force rod and a second vertical second force rod are arranged between the upper back longitudinal beam and the lower back longitudinal beam.
2. A rear side member structure according to claim 1, wherein: the first vertical second force rod and the second vertical second force rod are in an inverted splayed shape.
3. The utility model provides a hydrogen fuel cell car, includes car body and hydrogen bottle, and the hydrogen bottle sets up the below on floor after, its characterized in that: the automobile rear longitudinal beam structure is characterized in that two rear longitudinal beam structures according to any one of claims 1 to 2 are arranged in the automobile body, in the two rear longitudinal beam structures, two upper rear longitudinal beams are respectively attached to two sides of the lower surface of a rear floor, the front portions of the two upper rear longitudinal beams and the middle portions of the two upper rear longitudinal beams are connected through rear floor cross beams, and the anti-collision beam is connected between the rear portions of the two lower rear longitudinal beams.
4. A hydrogen fuel cell vehicle according to claim 3, characterized in that: the upper rear longitudinal beam is made of carbon fiber composite materials, and the two flanges on the upper side of the upper rear longitudinal beam are bonded with the rear floor through adhesives to form a closed cavity beam.
5. The hydrogen fuel cell vehicle according to claim 4, characterized in that: the rear part of the upper rear longitudinal beam is bonded with the rear wall cross beam through an adhesive.
6. The hydrogen fuel cell vehicle according to claim 4, characterized in that: the outer side flanging of the front part of the upper rear longitudinal beam is connected with the wheel cover inner plate in an overlapping mode, and the outer side flanging and the wheel cover inner plate are bonded through adhesive.
7. The hydrogen fuel cell vehicle according to claim 4, characterized in that: the upper rear longitudinal beam is connected with the side wall inner plate through an L-shaped reinforcing part to form a closed cavity.
8. A hydrogen fuel cell vehicle according to claim 3, characterized in that: the lower longitudinal beam joint is an aluminum alloy die casting, the upper rear longitudinal beam and the lower longitudinal beam joint are bonded through an adhesive and connected through a bolt, and the lower rear longitudinal beam and the lower longitudinal beam joint are connected through a bolt.
9. The hydrogen fuel cell vehicle according to claim 8, characterized in that: the lower longitudinal beam joint is provided with an interface, and the lower rear longitudinal beam is connected with the lower longitudinal beam joint in an inserting mode.
10. A hydrogen fuel cell vehicle according to claim 3, characterized in that: the lower rear longitudinal beam is made of aluminum alloy sections, and a flange edge is arranged at the rear part of the lower rear longitudinal beam.
CN202011348484.0A 2020-11-26 2020-11-26 Hydrogen fuel cell automobile Active CN112278073B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011348484.0A CN112278073B (en) 2020-11-26 2020-11-26 Hydrogen fuel cell automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011348484.0A CN112278073B (en) 2020-11-26 2020-11-26 Hydrogen fuel cell automobile

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CN112278073A true CN112278073A (en) 2021-01-29
CN112278073B CN112278073B (en) 2021-11-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11292534B2 (en) * 2020-03-18 2022-04-05 Ford Global Technologies, Llc Vehicle cargo box floor-to-sidewall mating configurations

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062933A1 (en) * 2004-12-28 2006-08-17 Volkswagen Ag Floor assembly for motor vehicle body, has base unit part formed of base profiles, and rear end designed as integral casting component, where base part and rear end are connected with each other in form-fit and firmly bonded manner
CN101596857A (en) * 2009-07-09 2009-12-09 重庆小康汽车产业(集团)有限公司 A kind of air bottle mounting structure of dual-fuel small truck
WO2015144289A1 (en) * 2014-03-22 2015-10-01 Audi Ag Motor vehicle and rear-end module therefor
CN106476896A (en) * 2016-10-11 2017-03-08 北京长城华冠汽车科技股份有限公司 A kind of body frame and the automobile with the body frame
CN211731597U (en) * 2019-12-25 2020-10-23 众泰新能源汽车有限公司 Rear floor assembly structure for hydrogen fuel automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062933A1 (en) * 2004-12-28 2006-08-17 Volkswagen Ag Floor assembly for motor vehicle body, has base unit part formed of base profiles, and rear end designed as integral casting component, where base part and rear end are connected with each other in form-fit and firmly bonded manner
CN101596857A (en) * 2009-07-09 2009-12-09 重庆小康汽车产业(集团)有限公司 A kind of air bottle mounting structure of dual-fuel small truck
WO2015144289A1 (en) * 2014-03-22 2015-10-01 Audi Ag Motor vehicle and rear-end module therefor
CN106132812A (en) * 2014-03-22 2016-11-16 奥迪股份公司 Motor vehicles and the car rear module for motor vehicles
CN106476896A (en) * 2016-10-11 2017-03-08 北京长城华冠汽车科技股份有限公司 A kind of body frame and the automobile with the body frame
CN211731597U (en) * 2019-12-25 2020-10-23 众泰新能源汽车有限公司 Rear floor assembly structure for hydrogen fuel automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11292534B2 (en) * 2020-03-18 2022-04-05 Ford Global Technologies, Llc Vehicle cargo box floor-to-sidewall mating configurations

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