CN216916061U

CN216916061U - Electric automobile body structure and electric automobile

Info

Publication number: CN216916061U
Application number: CN202220310736.9U
Authority: CN
Inventors: 麦文豪; 薛明; 张加勋
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-07-08
Anticipated expiration: 2032-02-16

Abstract

The utility model provides an electric automobile body structure, which comprises a threshold outer beam, a battery pack fixing support and a threshold inner beam, wherein the battery pack fixing support is connected to the threshold outer beam and is used for fixing a battery pack; the threshold inner beam is connected to the battery pack fixing support and arranged between the threshold outer beam and the battery pack. The utility model provides an electric automobile body structure which comprises a doorsill outer beam, a battery pack fixing support and a doorsill inner beam, wherein the battery pack fixing support is connected to the doorsill outer beam and used for fixing a battery pack, the doorsill inner beam is connected to the battery pack fixing support, and the doorsill inner beam is arranged between the doorsill outer beam and the battery pack. The utility model further provides an electric automobile.

Description

Electric automobile body structure and electric automobile

Technical Field

The utility model relates to the technical field of electric automobiles, in particular to an electric automobile body structure and an electric automobile.

Background

With the development of automobile electromotion, more and more accidents of battery pack fire after collision occur in society, and great attention and worry of consumers are caused. In order to improve the protection performance of the battery pack, it is required that the vehicle body provides sufficient protection to the battery pack in the event of a collision. To bumping before and bumping the operating mode after, preceding cabin and back floor provide sufficient energy-absorbing space to arranging the battery package under the preceding floor, nevertheless bump under the operating mode at the side pillar, only threshold roof beam can protect the battery package, and the battery package protection degree of difficulty is very big, and electric automobile bumps the security performance under the operating mode at the side pillar and remains to promote.

SUMMERY OF THE UTILITY MODEL

An object of an embodiment of the present invention is to provide an electric vehicle body structure and an electric vehicle, so as to solve the above problems. The embodiment of the utility model achieves the aim through the following technical scheme.

In a first aspect, the utility model provides an electric vehicle body structure, which comprises a threshold outer beam, a battery pack fixing support and a threshold inner beam, wherein the battery pack fixing support is connected to the threshold outer beam and is used for fixing a battery pack; the threshold inner beam is connected to the battery pack fixing support and arranged between the threshold outer beam and the battery pack.

In one embodiment, the inner sill beam is spaced from the outer sill beam.

In one embodiment, the distance between the inner sill beam and the outer sill beam is G, wherein G is more than or equal to 5mm and less than or equal to 10 mm.

In one embodiment, the battery pack fixing bracket comprises a battery pack supporting beam and a battery pack side beam which are connected, the battery pack side beam is arranged between the threshold outer beam and the battery pack and is connected to the threshold outer beam, and the threshold inner beam is connected to the top of the battery pack side beam.

In one embodiment, the number of the outer doorsill beams and the number of the inner doorsill beams are two, the two inner doorsill beams are arranged at intervals, the two inner doorsill beams are located between the two outer doorsill beams, the electric automobile body structure further comprises a seat cross beam, and the seat cross beam is connected between the two inner doorsill beams.

In one embodiment, the seat rail is in contact with the battery pack.

In one implementation mode, the doorsill inner beam comprises a bottom plate, a first side plate and a second side plate, the bottom plate is connected to the battery pack fixing support, the first side plate and the second side plate are arranged oppositely and are respectively connected with the bottom plate, and the first side plate, the second side plate and the bottom plate define a forming cavity.

In one embodiment, the inner sill of the doorsill further comprises a reinforcing rib, and the reinforcing rib is arranged on the first side plate and the second side plate and is located in the forming cavity.

In one embodiment, at least one of the outer sill, the inner sill and the battery pack fixing bracket is an aluminum extrusion molding structure.

In a second aspect, the utility model further provides an electric vehicle, which includes a battery pack and the electric vehicle body structure according to the first aspect, wherein the battery pack is fixedly arranged on the battery pack fixing support.

Compared with the prior art, the electric automobile body structure and the electric automobile provided by the utility model have the advantages that the electric automobile body structure comprises the doorsill outer beam, the battery pack fixing support and the doorsill inner beam, the battery pack fixing support is connected to the doorsill outer beam and used for fixing the battery pack, the doorsill inner beam is connected to the battery pack fixing support and arranged between the doorsill outer beam and the battery pack, and when the electric automobile body structure is used for the electric automobile, the protection performance of the battery pack can be improved under the side column collision working condition of the electric automobile, so that the safety performance of the electric automobile under the side column collision working condition is improved.

These and other aspects of the utility model are apparent from and will be elucidated with reference to the embodiments described hereinafter.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a conventional electric vehicle body structure.

Fig. 2 is a schematic structural diagram of an electric vehicle body structure provided by the utility model.

Fig. 3 is a transverse sectional view of the electric vehicle body structure shown in fig. 2.

Fig. 4 is another transverse sectional view of the electric vehicle body structure shown in fig. 2.

Fig. 5 is a schematic structural diagram of an electric vehicle provided by the present invention.

Detailed Description

In order to facilitate an understanding of the embodiments of the present invention, the embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the examples of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The inventor of the application finds that the traditional electric automobile only has the threshold beam to protect the battery pack under the working condition of side column collision, and only has the energy-absorbing protection space of 250 mm-300 mm, the battery pack protection difficulty is very high, the accident of the battery pack caused by collision is easy to occur, and the great attention and worry of consumers are caused.

In addition, in order to improve the cruising performance of the electric automobile, the light weight of the electric automobile is particularly important, and the traditional steel structure has large weight and can not meet the requirement of a user on the light weight of the electric automobile. Furthermore, as shown in fig. 1, for a conventional electric vehicle, when the battery pack 30 is installed, a safety distance of about 10mm needs to be maintained between the battery pack 30 and the floor panel 50, which may reduce a vertical space in the vehicle, and may easily result in a narrow space in the vehicle and poor man-machine performance.

In order to solve at least part of the problems, the applicant provides an electric automobile body structure and an electric automobile, wherein a threshold inner beam is connected to a battery pack fixing support and arranged between a threshold outer beam and a battery pack, and when the electric automobile body structure is used for the electric automobile, the protective performance of the battery pack can be improved under the side pillar collision working condition of the electric automobile, so that the safety performance of the electric automobile under the side pillar collision working condition is improved.

The following detailed description of the present invention will be made with reference to the drawings and the detailed description of the present invention.

Referring to fig. 1, the present invention provides an electric vehicle body structure 10, including a threshold outer beam 11, a battery pack fixing bracket 13 and a threshold inner beam 15, where the battery pack fixing bracket 13 is connected to the threshold outer beam 11, and the battery pack fixing bracket 13 is used to fix a battery pack 30; the threshold inner beam 15 is connected to the battery pack fixing bracket 13, and the threshold inner beam 15 is arranged between the threshold outer beam 11 and the battery pack 30.

The rocker outer 11 is disposed substantially in the front-rear direction of the vehicle body, and the rocker outer 11 may be connected to a pillar of the vehicle body, for example, the rocker outer 11 may be connected below the B-pillar 100 and inside the B-pillar 100.

Referring to fig. 2 and 3, the rocker outer 11 includes a first connecting member 111, a second connecting member 112, and a third connecting member 113, where, when viewed from a cross section of the electric vehicle body structure 10, the first connecting member 111 and the second connecting member 112 both extend substantially along a width direction of the vehicle body, the second connecting member 112 is disposed below the first connecting member 111, and the third connecting member 113 extends along a height direction of the vehicle body and is located between the first connecting member 111 and the B-pillar 100. In this embodiment, the first connecting member 111, the second connecting member 112, and the third connecting member 113 each include a horizontal rib and a vertical rib that are connected, and the first connecting member 111, the second connecting member 112, and the third connecting member 113 are connected in pairs, where the connection manner may be welding or the like. So set up, guaranteed that threshold outer beam 11 has better structural strength and stability.

In this embodiment, the number of the rocker outer beams 11 is two, and the two rocker outer beams 11 are arranged at intervals and are arranged on two opposite sides of the vehicle body. As an example, the two sill outer beams 11 may be connected by a battery pack fixing bracket 13 or the like.

In the present embodiment, the electric vehicle body structure 10 further includes a housing 12, and the housing 12 includes a beam inner plate 122 and a beam outer plate 124 that are connected, where one end of the beam inner plate 122 is connected to the inner side of the rocker outer beam 11, and the other end extends obliquely from the inner side of the rocker outer beam 11 in the vertical direction and toward the outer side of the rocker outer beam 11; the B column 100 is connected to the outer side of the outer beam plate 124, one end of the outer beam plate 124 is connected to the outer side of the outer sill beam 11, the other end of the outer beam plate 124 extends from the outer side of the outer sill beam 11 along the vertical direction and towards the inner side of the outer sill beam 11 in an inclined manner, and is connected with the other end of the inner beam plate 122, so that an accommodating cavity 126 is formed between the inner beam plate 122 and the outer beam plate 124 in an enclosing manner, the accommodating cavity 126 is used for accommodating part of the outer sill beam 11, the outer sill beam 11 is prevented from being exposed, and the outer sill beam 11 can be protected.

The battery pack fixing bracket 13 is connected to the threshold outer beam 11, for example, the battery pack fixing bracket 13 is connected to the second connecting member 112 of the threshold outer beam 11, and the battery pack fixing bracket 13 is used for fixing the battery pack 30, wherein the fixing manner may be bonding or clamping, etc.

In one embodiment, the battery pack securing bracket 13 includes a battery pack support beam 132 and a battery pack side beam 134 coupled together, and both the battery pack support beam 132 and the battery pack side beam 134 are coupled to the battery pack 30, wherein the battery pack side beam 134 is disposed between the sill outer beam 11 and the battery pack 30 and coupled to the sill outer beam 11, e.g., the battery pack side beam 134 is coupled to the second connector 112. In this embodiment, the number of the battery pack side members 134 may be two, and the two battery pack side members 134 are connected between the battery pack support beams 132. The battery pack support beam 132 is disposed at the bottom of the battery pack 30, and can be used for connecting and fixing the battery pack 30, and also for supporting the battery pack 30.

The inner sill 15 is connected to the battery pack fixing support 13, for example, the inner sill 15 is connected to the top of the battery pack side beam 134, and the inner sill 15 is arranged between the outer sill 11 and the battery pack 30, so that when the electric vehicle body structure 10 is used for an electric vehicle, the protective performance of the battery pack 30 can be improved under the side column collision condition of the electric vehicle, and the safety performance of the electric vehicle under the side column collision condition can be improved.

In this embodiment, the rocker inner beam 15 is spaced from the rocker outer beam 11, and since the rocker inner beam 15 is connected to the top of the battery pack side beam 134, the battery pack side beam 134 is also spaced from the rocker outer beam 11, which improves the fault tolerance of the assembly of the battery pack fixing bracket 13 and reduces the assembly difficulty of the battery pack fixing bracket 13. In one embodiment, the distance between the inner sill 15 and the outer sill 11 is G, wherein G is greater than or equal to 5mm and less than or equal to 10mm, and the inventor finds that, when the distance G between the inner sill 15 and the outer sill 11 is less than 5mm, the fault tolerance rate of the battery pack fixing support 13 assembly is significant, and the assembly difficulty of the battery pack fixing support 13 is increased; when the distance G between the sill inner beam 15 and the sill outer beam 11 is greater than 10mm, the difficulty of assembling the battery pack fixing bracket 13 is greatly reduced, but the protection performance of the battery pack 30 is reduced. In other embodiments, the rocker inner beam 15 may also be connected to the rocker outer beam 11.

In this embodiment, the number of the threshold inner beams 15 is two, two threshold inner beams 15 are arranged at intervals, and the two threshold inner beams 15 are located between the two threshold outer beams 11.

Referring to fig. 3 and 4, in one embodiment, the sill inner 15 includes a bottom plate 152, a first side plate 154 and a second side plate 155, wherein the bottom plate 152 is connected to the battery pack fixing bracket 13 by welding or integrally molding. The first side plate 154 and the second side plate 155 are disposed opposite to each other and are connected to the bottom plate 152, respectively, and the first side plate 154 is located between the second side plate 155 and the rocker outer 11. In the present embodiment, the first side plate 154, the second side plate 155, and the bottom plate 152 define a molding cavity 157, wherein the molding cavity 157 may be formed by an aluminum extrusion molding process.

In one embodiment, the rocker inner 15 further includes a stiffener 159, and the stiffener 159 is disposed on the first side plate 154 and the second side plate 155 and is located in the molding cavity 157. The reinforcing rib 159 can increase the structural strength and stability of the sill inner 15 to improve the protection performance of the battery pack 30, thereby improving the safety performance of the electric vehicle under the side pillar collision working condition.

In one embodiment, at least one of the outer sill 11, the inner sill 15 and the battery pack fixing bracket 13 is an aluminum extrusion structure, that is, at least one of the outer sill 11, the inner sill 15 and the battery pack fixing bracket 13 is made by an aluminum extrusion process. Compared with a traditional steel structure, the weight of the aluminum extrusion forming structure and the tooling cost are greatly reduced, for example, the weight of the aluminum extrusion forming structure with the same size is 30% lighter than that of the traditional steel structure, therefore, at least one of the doorsill outer beam 11, the doorsill inner beam 15 and the battery pack fixing support 13 is the aluminum extrusion forming structure, the weight of the electric automobile body structure 10 can be reduced, the electric automobile is obvious in light weight effect, the tooling cost is greatly saved, and the economic benefit is good. In the present embodiment, the sill outer 11, the sill inner 15, the battery pack fixing bracket 13, and the battery pack 30 are all formed by aluminum extrusion. Compared with the doorsill outer beam 11 and the doorsill inner beam 15 which are formed by a steel stamping process, the doorsill outer beam 11 and the doorsill inner beam 15 which are formed by the aluminum extrusion forming process are more beneficial to designing transverse ribs, the collision energy absorption efficiency of the doorsill outer beam 11 and the doorsill inner beam 15 is improved, the impact force on passengers in a vehicle is reduced, and the safety performance of the electric vehicle is improved. In other embodiments, both the sill outer 11 and sill inner 15 beams of the aluminum extrusion structure may be replaced with steel beam structures; or the threshold outer beam 11 is of a steel beam structure, and the threshold inner beam 15 is of an aluminum extrusion molding structure. In other embodiments, the aluminum extrusion-molded battery pack 30 may be replaced with the die-cast battery pack 30.

Electric automobile body structure 10 still includes seat crossbeam 17, along the width direction of automobile body, threshold outer beam 11, threshold inner beam 15 and seat crossbeam 17 set gradually, for example, seat crossbeam 17 connects between two threshold inner beams 15, can increase electric automobile body structure 10 along the width direction's of automobile body intensity, guarantees electric automobile and bumps the interior transverse space of car under the operating mode at the side pillar, promotes electric automobile and bumps the security performance under the operating mode at the side pillar. The seat cross member 17 may be used to provide a seat. In this embodiment, the seat cross member 17 may be formed by a steel rolling process. In other embodiments, the seat cross member 17 may be formed by other machining processes such as grinding and milling.

In one embodiment, the seat cross member 17 and the battery pack support beam 132 are respectively disposed on two sides of the battery pack 30, and the seat cross member 17 contacts with the battery pack 30, that is, the upper shell of the battery pack 30 is filled with the front floor panel, and the battery pack 30 and the front floor are of an integrated structure, so that the height of the vertical space in the vehicle is increased by about 10mm compared with the safety distance of about 10mm between the battery pack 30 and the bottom panel 152 of the driven electric vehicle, and the man-machine performance is excellent. Since the threshold inner beam 15 is disposed between the threshold outer beam 11 and the battery pack 30, the threshold inner beam 15 is spaced from the threshold outer beam 11, and the upper case of the battery pack 30 is a front floor panel, in this embodiment, the threshold outer beam 11 is not connected to the front floor panel.

In summary, the electric vehicle body structure 10 provided by the utility model includes the outer sill 11, the battery pack fixing bracket 13 and the inner sill 15, the battery pack fixing bracket 13 is connected to the outer sill 11 and is used for fixing the battery pack 30, the inner sill 15 is connected to the battery pack fixing bracket 13, and the inner sill 15 is arranged between the outer sill 11 and the battery pack 30, when the electric vehicle body structure 10 is used for an electric vehicle, the protection performance of the battery pack 30 can be improved under the side pillar collision condition of the electric vehicle, so that the safety performance of the electric vehicle under the side pillar collision condition is improved.

Referring to fig. 5, the present invention further provides an electric vehicle 1, where the electric vehicle 1 may be a new energy vehicle such as a pure electric vehicle, a hybrid electric vehicle, or a fuel cell electric vehicle. The electric vehicle 1 includes a battery pack 30 and an electric vehicle body structure 10, wherein the battery pack 30 is fixedly disposed on the battery pack fixing bracket 13, for example, the battery pack 30 and the battery pack 30 may be fixed by screws, bolts or other fastening structures.

In summary, the electric vehicle 1 provided by the present invention includes a battery pack 30 and an electric vehicle body structure 10, the electric vehicle body structure 10 includes a threshold outer beam 11, a battery pack fixing bracket 13 and a threshold inner beam 15, the battery pack fixing bracket 13 is connected to the threshold outer beam 11 and is configured to fix the battery pack 30, and by connecting the threshold inner beam 15 to the battery pack fixing bracket 13 and disposing the threshold inner beam 15 between the threshold outer beam 11 and the battery pack 30, the protection performance of the battery pack 30 can be improved under a side pillar collision condition of the electric vehicle 1, so as to improve the safety performance of the electric vehicle 1 under the side pillar collision condition.

In the present invention, the terms "assembled" and the like are to be understood broadly unless otherwise explicitly specified or limited. For example, the connection can be fixed, detachable or integrated; may be a mechanical connection; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through the inside of two elements, or they may be connected only through surface contact or through surface contact of an intermediate member. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used solely to distinguish one from another and are not to be construed as referring to or particular structures. The description of the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In the present invention, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described herein can be combined and combined by those skilled in the art without contradiction.

The above embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. An electric vehicle body structure characterized by comprising:

a threshold outer beam;

the battery pack fixing support is connected to the doorsill outer beam and used for fixing a battery pack; and

the inner sill of the doorsill is connected with the battery pack fixing support and arranged between the outer sill of the doorsill and the battery pack.

2. The electric vehicle body structure according to claim 1, wherein the rocker inner beam is spaced apart from the rocker outer beam.

3. The electric vehicle body structure according to claim 2, wherein a distance between the rocker inner beam and the rocker outer beam is G, wherein G is 5mm or more and 10mm or less.

4. The electric vehicle body structure of claim 1, wherein the battery pack securing bracket comprises a battery pack support beam and a battery pack side beam connected to each other, the battery pack side beam being disposed between and connected to the threshold outer beam and the battery pack, and the threshold inner beam being connected to a top of the battery pack side beam.

5. The electric vehicle body structure according to claim 1, wherein the number of the threshold outer beams and the number of the threshold inner beams are two, the two threshold inner beams are arranged at intervals, and the two threshold inner beams are located between the two threshold outer beams, the electric vehicle body structure further comprising a seat cross beam, and the seat cross beam is connected between the two threshold inner beams.

6. The electric vehicle body structure according to claim 5, wherein the seat cross member is in contact with the battery pack.

7. The electric vehicle body structure according to claim 1, wherein the rocker inner beam includes a bottom plate, a first side plate, and a second side plate, the bottom plate is connected to the battery pack fixing bracket, the first side plate and the second side plate are disposed opposite to each other and are respectively connected to the bottom plate, and the first side plate, the second side plate, and the bottom plate define a molding cavity.

8. The electric vehicle body structure according to claim 7, wherein the rocker inner beam further includes a reinforcing rib provided to the first side plate and the second side plate and located in the molding cavity.

9. The electric vehicle body structure according to claim 1, wherein at least one of the rocker outer beam, the rocker inner beam, and the battery pack fixing bracket is an aluminum extrusion structure.

10. An electric vehicle, characterized by comprising a battery pack and the electric vehicle body structure according to any one of claims 1 to 9, wherein the battery pack is fixedly arranged on the battery pack fixing bracket.