CN211107731U - Automobile floor boundary beam and electric vehicle body - Google Patents

Automobile floor boundary beam and electric vehicle body Download PDF

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Publication number
CN211107731U
CN211107731U CN201922146000.3U CN201922146000U CN211107731U CN 211107731 U CN211107731 U CN 211107731U CN 201922146000 U CN201922146000 U CN 201922146000U CN 211107731 U CN211107731 U CN 211107731U
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side plate
plate
reinforcement
mounting box
welded
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CN201922146000.3U
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Chinese (zh)
Inventor
王勇
冷文超
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WM Smart Mobility Shanghai Co Ltd
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WM Smart Mobility Shanghai Co Ltd
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Priority to CN201922146000.3U priority Critical patent/CN211107731U/en
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Abstract

The utility model discloses an automobile floor boundary beam and an electric vehicle body, which comprises a boundary beam main body, wherein a plurality of mounting boxes used for being connected with a hanging beam on a battery pack are arranged on the boundary beam main body at intervals; the mounting boxes are arranged at intervals along the length direction of the side beam main body; a connecting through hole is formed in the top of the mounting box; and a fixing nut is arranged below the connecting through hole in the mounting box. The utility model discloses a car floor boundary beam and electric motor car automobile body through set up the mounting box in the boundary beam main part for support and installation battery package, the mounting box has cavity structures, can the weight of equipartition battery package, thereby can support the battery package more steadily. During connection, the bolt penetrates through the bolt connecting hole in the suspension cross beam and the connecting through hole in the mounting box and then is connected with the fixing nut in the mounting box, and assembly is facilitated.

Description

Automobile floor boundary beam and electric vehicle body
Technical Field
The utility model relates to an automobile body technical field especially relates to an automobile floor boundary beam and electric motor car automobile body.
Background
The electric automobile is the main development direction of present and future vehicle, and the battery package is as the power source of electric automobile, and the continuation of the journey mileage requires longer and longer, and the weight of battery package is also more and more heavy, and is very high to battery package mounting point intensity and rigidity requirement on the automobile body, and its fixed reliability of assembly and safety receive everybody's attention more.
In order to meet the assembly load-bearing requirements of the battery pack, most of the battery pack fixing points of the existing pure electric automobile are arranged on the longitudinal beam or a large and thick steel plate is welded on the longitudinal beam to serve as a mounting point.
Welding strength is difficult for guaranteeing behind this kind of structure panel beating thickness, and the degree of depth of longeron is dark, the part is heavy, with high costs, and the space that occupies is big, and the mount pad cantilever that the battery package body stretches out is long simultaneously, and mounting structure intensity is poor.
In view of this, it is necessary to provide a floor side rail for an automobile and an electric vehicle body, in which a battery pack is easily mounted and a structure is stable.
SUMMERY OF THE UTILITY MODEL
The technical scheme of the utility model provides an automobile floor boundary beam, which comprises a boundary beam main body, wherein a plurality of mounting boxes used for being connected with a hanging beam on a battery pack are arranged on the boundary beam main body at intervals;
the mounting boxes are arranged at intervals along the length direction of the side beam main body;
a connecting through hole is formed in the top of the mounting box;
and a fixing nut is arranged below the connecting through hole in the mounting box.
Through set up the mounting box in the boundary beam main part, be used for being connected with the last hanging beam of battery package, in order to support the battery package, the mounting box is box-shaped cavity structures, the curb plate of the gravity accessible box-shaped structure of battery package is equallyd divide, thereby requirement greatly reduced to the curb plate of unilateral, every curb plate of mounting box divides to one of several tenths of battery package gravity, the mounting box can bear bigger, heavier battery package, not only guaranteed the assembly steadiness of battery package, upgrade to follow-up battery package volume also can continue to use moreover. And a fixing nut is arranged in the battery box, so that the battery box is conveniently connected with the suspension cross beam on the battery pack through a bolt.
Further, the mounting box comprises a mounting box main body and a reinforcing piece;
the mounting box main body comprises a top plate, a first side plate, a second side plate and a third side plate;
the first side plate and the second side plate are oppositely connected to the front side and the rear side of the top plate, and the reinforcing piece and the third side plate are oppositely connected to the left side and the right side of the top plate;
the third side plate and the stiffener are connected between the first side plate and the second side plate, respectively;
the first side plate, the second side plate, the third side plate and the reinforcing piece are respectively connected with the edge beam main body;
the connecting through hole is formed in the top plate, and the fixing nut is installed on the lower surface of the top plate.
The mounting box main part seals box structure for forming five sides, and the reinforcement is connected on the opening of mounting box main part, has improved structural strength and connection stability.
Further, the reinforcement comprises a reinforcement transverse plate and a reinforcement vertical plate arranged on the reinforcement transverse plate;
the reinforcement vertical plates and the reinforcement transverse plates are connected to form an L shape;
the reinforcement transverse plate is welded on the boundary beam main body, and the reinforcement vertical plate is welded with the top plate, the first side plate and the second side plate.
The reinforcement is L shape structure, conveniently with boundary beam main part, roof, first curb plate and second curb plate welding to increased area of weld, improved structural stability.
Furthermore, a top plate flanging extends upwards on the top plate, and the top plate flanging is welded with the vertical plate of the reinforcement. The top plate flanging is welded with the vertical plate of the reinforcement, so that the structural strength and the connection stability between the top plate and the reinforcement are improved.
Further, a first flanging used for being connected with the edge beam main body is arranged at the bottom of the first side plate;
a second flanging used for being connected with the reinforcing piece is arranged on the first side plate;
the first flanging is welded with the edge beam main body, and the second flanging is welded with the vertical plate of the reinforcement;
a third flanging used for being connected with the boundary beam main body is arranged at the bottom of the second side plate;
a fourth flanging used for being connected with the reinforcing piece is arranged on the second side plate;
the third flanging is welded with the side beam main body, and the fourth flanging is welded with the vertical plate of the reinforcement.
Through setting up first turn-ups, second turn-ups, third turn-ups and fourth turn-ups to with first turn-ups and boundary beam main part welding, with second turn-ups and reinforcement riser welding, with third turn-ups and boundary beam main part welding, with fourth turn-ups and reinforcement riser welding, improved structural strength and connection stability between boundary beam main part, first curb plate, second curb plate and the reinforcement.
Furthermore, reinforcing ribs are arranged on the transverse plates of the reinforcing parts, so that the structural strength of the transverse plates of the reinforcing parts is improved.
Further, a side plate extending downwards is arranged at the bottom of the third side plate and is welded with the side part of the edge beam main body;
fifth flanges are respectively arranged at the front end and the rear end of the third side plate;
one of the fifth flanging is welded with the first side plate, and the other of the fifth flanging is welded with the second side plate.
Through setting up curb plate extension board, fifth turn-ups to with the curb plate extension board with the lateral part welding of boundary beam main part, weld a fifth turn-ups and first curb plate, weld another fifth turn-ups and second curb plate, promote the stability of being connected of third curb plate and boundary beam main part, first curb plate, second curb plate.
Further, the top plate, the first side plate, the second side plate and the third side plate are integrally formed, the box main body is convenient to install and machine-formed, and the structure is stable.
The technical scheme of the utility model also provides an electric vehicle body, including two car floor boundary beams and a battery pack arranged between the two car floor boundary beams according to any one of the above technical schemes;
a plurality of suspension cross beams are arranged on the battery pack, and each suspension cross beam is connected with a mounting box on the automobile floor edge beam;
one end of the hanging beam is fixed on the battery pack, and the other end of the hanging beam is provided with a bolt connecting hole;
the suspension cross beam is connected with the mounting box through bolts;
the bolt sequentially penetrates through the bolt connecting hole and the connecting through hole in the mounting box and is connected with the fixing nut in the mounting box.
The mounting box has a cavity structure, and the weight of the battery pack can be evenly divided, so that the battery pack can be more stably supported. During connection, the bolt penetrates through the bolt connecting hole in the suspension cross beam and the connecting through hole in the mounting box and then is connected with the fixing nut in the mounting box, and assembly is facilitated.
Furthermore, a reinforcing convex part is arranged on the suspension cross beam, and a lightening hole is arranged on the reinforcing convex part. The reinforcing convex part improves the structural strength of the suspension cross beam, and the lightening holes can correspondingly lighten the structural weight.
By adopting the technical scheme, the method has the following beneficial effects:
the utility model provides a car floor boundary beam and electric motor car automobile body through set up the mounting box in the boundary beam main part for support and installation battery package, the mounting box has cavity structures, can the weight of equipartition battery package, thereby can support the battery package more steadily. During connection, the bolt penetrates through the bolt connecting hole in the suspension cross beam and the connecting through hole in the mounting box and then is connected with the fixing nut in the mounting box, and assembly is facilitated.
Drawings
Fig. 1 is a perspective view of an automobile floor edge beam provided by an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the mounting box mounted to the sill body;
FIG. 3 is a perspective view of the mounting box;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 5 is a schematic view illustrating a battery pack in an electric vehicle body according to an embodiment of the present invention is connected to one of the floor side beams;
fig. 6 is an exploded view of the battery pack of fig. 5 coupled to one of the floor frames of an automobile.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1-4, an embodiment of the present invention provides an automobile floor boundary beam, which includes a boundary beam main body 1. A plurality of mounting boxes 2 for connection to the suspension cross members 4 of the battery pack 3 shown in fig. 5 to 6 are provided at intervals on the side sill body 1.
The plurality of mounting boxes 2 are arranged at intervals along the longitudinal direction of the side sill body 1.
A connection through hole 2110 is provided on the top of the mounting box 2.
A fixing nut 23 is provided below the coupling through hole 2110 in the mounting box 2.
The utility model provides a floor boundary beam is the boundary beam on the electric automobile body, and it includes boundary beam main part 1 and a plurality of mounting box 2 that extend along automobile body length direction. The plurality of mounting boxes 2 are arranged at intervals along the longitudinal direction of the side sill body 1. The mounting box 2 is adapted to be connected to a suspension beam 4 on the battery pack 3 to support and mount the battery pack 3.
The top of the mounting box 2 has a coupling through hole 2110, a fixing nut 23 is provided in the mounting box 2, the fixing nut 23 is located below the coupling through hole 2110, and the fixing nut 23 is coaxially disposed with the coupling through hole 2110.
The mounting box 2 may be welded to the sill body 1. When the battery pack 3 needs to be installed, the suspension cross beam 4 on the battery pack 3 is connected with the fixing nut 23 in the installation box 2 through a bolt, and assembly is facilitated.
The mounting box 2 is box-shaped cavity structure, and the curb plate of the gravity accessible box-shaped structure of battery package 3 is equallyd divide to requirement greatly reduced to the curb plate of unilateral, every curb plate of mounting box 2 divide to one of several tens of battery package gravity, and mounting box 2 can bear bigger, heavier battery package 3, has not only guaranteed the assembly steadiness of battery package 3, and 3 capacity upgrading generations to follow-up battery package also can continue to use moreover.
In one embodiment, as shown in fig. 2-4, the mounting box 2 includes a mounting box body 21 and a stiffener 22.
The mounting box main body 21 includes a top plate 211, a first side plate 212, a second side plate 213, and a third side plate 214.
The first side plate 212 and the second side plate 213 are oppositely connected to the front and rear sides of the top plate 211, and the reinforcement 22 is oppositely connected to the left and right sides of the top plate 211 with the third side plate 214. The third side plate 214 and the reinforcement 22 are connected between the first side plate 212 and the second side plate 213, respectively.
The first side plate 212, the second side plate 213, the third side plate 214, and the reinforcement 22 are connected to the side sill body 1, respectively.
The coupling through-hole 2110 is provided on the top plate 211, and the fixing nut 23 is mounted on the lower surface of the top plate 211.
When the battery pack 3 is mounted, the reinforcing member 22 is positioned on the outer side, and the third side plate 214 is positioned on the battery pack 3 side.
The mounting box main body 21 is formed by connecting a top plate 211, a first side plate 212, a second side plate 213, and a third side plate 214.
First and second side plates 212 and 213 are connected between the front and rear ends of the top plate 211 and the side sill body 1. The third side plate 214 and the reinforcement 22 are connected between the left and right ends of the top plate 211 and the side sill body 1. From this, mounting box main part 21 is for forming five closed box structures, and reinforcement 22 is connected on mounting box main part 21's opening, can seal mounting box main part 21 to can improve its structural strength, with better support hanging beam 4, be used for installing battery package 3.
In one embodiment, as shown in fig. 2-4, the reinforcement 22 includes a reinforcement cross plate 221 and reinforcement risers 222 disposed on the reinforcement cross plate 221.
The reinforcement riser 222 is connected to the reinforcement cross plate 221 in the shape of L.
The reinforcement cross plate 221 is welded to the sill body 1, and the reinforcement riser 222 is welded to the top plate 211, the first side plate 212, and the second side plate 213.
The reinforcement vertical plate 222 and the reinforcement transverse plate 221 are integrally formed into an L-shaped structure, the reinforcement transverse plate 221 is basically horizontally arranged and welded with the top surface of the boundary beam main body 1, the reinforcement vertical plate 222 basically vertically extends and is welded with the top plate 211, the first side plate 212 and the second side plate 213, welding and installation are facilitated, the welding area is increased, structural stability is improved, and structural stability of the mounting box 2 can be improved.
In one embodiment, as shown in fig. 2-4, roof flanges 2111 extend upwardly on the roof 211, and the roof flanges 2111 are welded to the reinforcement risers 222. The roof flanges 2111 are welded to the reinforcement risers 222, improving the structural strength and connection stability between the roof 211 and the reinforcement 22.
In one embodiment, as shown in fig. 2-4, a first flange 2121 is provided at the bottom of the first side plate 212 for connecting to the sill body 1. A second flange 2122 for connecting to the reinforcement 2 is provided on the first side plate 212.
The first flange 2121 is welded to the sill body 1 and the second flange 2122 is welded to the reinforcement riser 222.
A third flange 2131 for connecting with the side sill main body 1 is provided on the bottom of the second side plate 213, and a fourth flange 2132 for connecting with the reinforcement 22 is provided on the second side plate 213.
The third flanging 2131 is welded with the edge beam main body 1, and the fourth flanging 2132 is welded with the reinforcement vertical plate 22.
A first flange 2121 is integrally formed at the bottom of the first side plate 212, extends toward the outer side of the mounting box 2, and is welded to the top surface of the side sill body 1.
A second turned-up edge 2122 is integrally formed on the end of the first side plate 212 close to the reinforcement 22, extends toward the outside of the mounting box 2, and is welded to the reinforcement riser 22.
A third flange 2131 is integrally formed at the bottom of the second side plate 231, extends toward the outside of the mounting box 2, and is welded to the top surface of the side sill body 1. The third cuff 2131 extends in the opposite direction to the first cuff 2121.
A fourth bead 2132 is integrally formed on the end of the second side plate 213 adjacent to the reinforcement 22, which extends toward the outside of the mounting box 2 and is welded to the reinforcement riser 22. The fourth cuff 2132 extends in the opposite direction to the second cuff 2122.
By arranging the first turned edge 2121, the second turned edge 2122, the third turned edge 2131 and the fourth turned edge 2132, the first turned edge 2121 is welded with the side beam main body 1, the second turned edge 2122 is welded with the reinforcement vertical plate 22, the third turned edge 2131 is welded with the side beam main body 1, the fourth turned edge 2132 is welded with the reinforcement vertical plate 22, and the structural strength and the connection stability among the side beam main body 1, the first side plate 212, the second side plate 213 and the reinforcement 22 are improved.
In one embodiment, as shown in fig. 2-3, the reinforcement cross plate 221 is provided with reinforcing ribs 2211 to improve the structural strength of the reinforcement cross plate 221.
In one embodiment, as shown in fig. 2-3, the bottom of the third side plate 214 is provided with a downwardly extending side plate extension plate 2141, and the side plate extension plate 2141 is welded to the side of the sill body 11.
The front and rear ends of the third side plate 214 are respectively provided with a fifth flange 2142. One fifth flange 2142 is welded to the first side plate 212, and the other fifth flange 2142 is welded to the second side plate 213.
A side plate extension plate 2141 is integrally provided at the bottom of the third side plate 214 and extends downward, and it is welded to the side of the side sill main body 1.
A fifth flange 2142 extending toward the reinforcement member 22 is provided at each of the front and rear ends of the third side plate 214. One fifth flanging 2142 is welded to the first side plate 212, and the other fifth flanging 2142 is welded to the second side plate 213, so that the connection stability of the third side plate 214 with the edge beam main body 1, the first side plate 212 and the second side plate 213 is improved, and better support can be provided for the battery pack 3.
In one embodiment, the top plate 211, the first side plate 212, the second side plate 213 and the third side plate 214 are integrally formed, so that the process of mounting the cartridge body 21 is facilitated, and the structure is stable.
Fig. 5 to 6 show only one automobile floor edge beam in relation to a battery pack, two automobile floor edge beams are arranged along the length direction in the body of the electric vehicle, and the battery pack is generally installed between the front ends of the two automobile floor edge beams.
As shown in fig. 5-6, an embodiment of the present invention provides an electric vehicle body, which includes two automobile floor edge beams in any of the foregoing embodiments and a battery pack 3 disposed between the two automobile floor edge beams.
Be provided with many hanging beam 4 on the battery package 3, every hanging beam 4 is connected with a mounting box 2 on the floor boundary beam of car respectively.
One end of the suspension cross member 4 is fixed to the battery pack 3, and the other end thereof is provided with a bolt coupling hole 41.
The suspension cross member 4 is connected to the mounting box 2 by bolts (not shown).
The bolt passes through the bolt coupling hole 41 and the coupling through hole 2110 on the mounting box 2 in order and is coupled with the fixing nut 23 in the mounting box 2.
The utility model provides an electric motor car automobile body includes that two have the vehicle floor boundary beam of mounting box 2, and battery package 3 is installed between two vehicle floor boundary beams.
Regarding the structure, structure and operation principle of the mounting box 2, please refer to the description part of the mounting box 2, which is not described herein again.
A suspension cross member 4 or suspension bracket is provided on the top surface of the battery pack 3 for suspending the battery pack 3 at a corresponding position in the vehicle cabin.
During assembly, bolts penetrate through the bolt connecting holes 41 in the suspension cross beam 4 and the connecting through holes 2110 in the mounting box 2 and then are connected with the fixing nuts 23 in the mounting box 2, and assembly is facilitated.
The left and right sides of battery package 3 sets up many suspension cross beams 4 respectively, and every suspension cross beam 4 all is connected with the mounting box 2 on the boundary beam main part 1 of corresponding side.
The mounting box 2 has a cavity structure, and the weight of the battery pack 3 can be equally divided, so that the battery pack 3 can be more stably supported.
In one embodiment, as shown in fig. 5 to 6, a reinforcing boss 42 is provided on the suspension cross member 4, and a lightening hole 43 is provided on the reinforcing boss 42. The reinforcing bosses 42 increase the structural strength of the suspension cross member 4, and the lightening holes 43 can correspondingly lighten the structural weight.
The utility model discloses in, every mounting box 2 is six confined box-like cavity structures, and the intensity height can bear bigger heavier battery package 3. The structure universal ratio of mounting box 2 is high, practices thrift the frock expense. By utilizing the cavity structure of the mounting box 2, the strength requirement on a single part is reduced, and the strength and the rigidity of the whole mounting point are improved; the side sill main body 1 can be made of a thinner material, so that the weight is reduced, and the cost is reduced.
According to the needs, the above technical schemes can be combined to achieve the best technical effect.
What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims (10)

1. The automobile floor boundary beam comprises a boundary beam main body and is characterized in that a plurality of mounting boxes used for being connected with a suspension cross beam on a battery pack are arranged on the boundary beam main body at intervals;
the mounting boxes are arranged at intervals along the length direction of the side beam main body;
a connecting through hole is formed in the top of the mounting box;
and a fixing nut is arranged below the connecting through hole in the mounting box.
2. The automotive floor sill of claim 1, wherein the mounting box includes a mounting box body and a reinforcement;
the mounting box main body comprises a top plate, a first side plate, a second side plate and a third side plate;
the first side plate and the second side plate are oppositely connected to the front side and the rear side of the top plate, and the reinforcing piece and the third side plate are oppositely connected to the left side and the right side of the top plate;
the third side plate and the stiffener are connected between the first side plate and the second side plate, respectively;
the first side plate, the second side plate, the third side plate and the reinforcing piece are respectively connected with the edge beam main body;
the connecting through hole is formed in the top plate, and the fixing nut is installed on the lower surface of the top plate.
3. The automotive floor flange of claim 2, wherein the reinforcement includes a reinforcement cross plate and a reinforcement riser disposed on the reinforcement cross plate;
the reinforcement vertical plates and the reinforcement transverse plates are connected to form an L shape;
the reinforcement transverse plate is welded on the boundary beam main body, and the reinforcement vertical plate is welded with the top plate, the first side plate and the second side plate.
4. The automotive floor flange of claim 3, wherein a roof flange extends upwardly from the roof panel, the roof flange being welded to the reinforcement riser.
5. The automotive floor edge beam of claim 3, wherein a first flange for connecting with the edge beam body is provided at the bottom of the first side plate;
a second flanging used for being connected with the reinforcing piece is arranged on the first side plate;
the first flanging is welded with the edge beam main body, and the second flanging is welded with the vertical plate of the reinforcement;
a third flanging used for being connected with the boundary beam main body is arranged at the bottom of the second side plate;
a fourth flanging used for being connected with the reinforcing piece is arranged on the second side plate;
the third flanging is welded with the side beam main body, and the fourth flanging is welded with the vertical plate of the reinforcement.
6. The floor rocker of claim 3, wherein a reinforcement is provided on the reinforcement cross plate.
7. The automotive floor sill of claim 2, wherein the bottom of the third side panel is provided with a downwardly extending side panel extension panel welded to the side of the sill body;
fifth flanges are respectively arranged at the front end and the rear end of the third side plate;
one of the fifth flanging is welded with the first side plate, and the other of the fifth flanging is welded with the second side plate.
8. The automotive floor flange of claim 2, wherein the top panel, the first side panel, the second side panel, and the third side panel are integrally formed.
9. An electric vehicle body characterized by comprising two automotive floor frames according to any one of claims 1 to 8 and a battery pack disposed between the two automotive floor frames;
a plurality of suspension cross beams are arranged on the battery pack, and each suspension cross beam is connected with a mounting box on the automobile floor edge beam;
one end of the hanging beam is fixed on the battery pack, and the other end of the hanging beam is provided with a bolt connecting hole;
the suspension cross beam is connected with the mounting box through bolts;
the bolt sequentially penetrates through the bolt connecting hole and the connecting through hole in the mounting box and is connected with the fixing nut in the mounting box.
10. The electric vehicle body of claim 9, wherein a reinforcing boss is provided on the suspension cross member, the reinforcing boss having a lightening hole.
CN201922146000.3U 2019-12-04 2019-12-04 Automobile floor boundary beam and electric vehicle body Active CN211107731U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922146000.3U CN211107731U (en) 2019-12-04 2019-12-04 Automobile floor boundary beam and electric vehicle body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922146000.3U CN211107731U (en) 2019-12-04 2019-12-04 Automobile floor boundary beam and electric vehicle body

Publications (1)

Publication Number Publication Date
CN211107731U true CN211107731U (en) 2020-07-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922146000.3U Active CN211107731U (en) 2019-12-04 2019-12-04 Automobile floor boundary beam and electric vehicle body

Country Status (1)

Country Link
CN (1) CN211107731U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112959879A (en) * 2021-03-30 2021-06-15 重庆长安汽车股份有限公司 Battery package mounting structure and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112959879A (en) * 2021-03-30 2021-06-15 重庆长安汽车股份有限公司 Battery package mounting structure and vehicle
CN112959879B (en) * 2021-03-30 2022-08-09 重庆长安汽车股份有限公司 Battery package mounting structure and vehicle

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