CN220517967U - Vehicle and battery tray thereof - Google Patents

Abstract

Embodiments of the present application provide a vehicle and a battery tray thereof, wherein the battery tray is adapted to be integrated on a vehicle body floor. The battery tray includes a plate body, a frame, and a beam assembly. The plate body and the frame form a containing space in a surrounding mode, and the containing space is provided with a first central axis and a second central axis which are physically intersected. The frame comprises two first frames positioned on two opposite sides of the first central axis and two second frames positioned on two opposite sides of the second central axis. The beam assembly comprises a support beam obliquely connected between two first frames and a reinforcement beam obliquely connected between the adjacent first frames and second frames. In the embodiment of the application, the frame is connected with the stiffening beam in an inclined manner through the supporting beam, so that the inside is additionally supported in the component force direction between the longitudinal direction and the transverse direction, the overall structural strength and the extrusion resistance and torsion resistance are improved, and a reliable protection effect is provided for the battery pack.

Description

Vehicle and battery tray thereof

Technical Field

The application relates to the field of vehicles, in particular to a vehicle and a battery tray thereof.

Background

With the development of technology, electric automobiles are increasingly favored by consumers due to the advantages of the electric automobiles in terms of environmental protection, energy conservation and intelligence. In the battery pack arrangement of the electric automobile, one of the modes is a CTB (Cell ToBody) structure, namely, the battery pack is directly integrated under the floor of the automobile body, so that the space and the cost are saved.

In addition, the battery packs are increasingly being flattened in design for more efficient space saving. However, while a flattened battery pack structure may provide more efficient space utilization, battery trays also present a number of challenges in structural design. As shown in fig. 5, a schematic view of a typical battery tray is shown, in which a beam structure inside the battery tray is generally designed in a transverse or longitudinal direction, which is disadvantageous in terms of improving torsional rigidity and impact resistance of a battery pack, and the battery pack is insufficient in terms of torsional resistance during the production process or when an electric vehicle is bumped, and is easily deformed in terms of torsion during the processing or when it is bumped and extruded.

Disclosure of Invention

Aspects of the present application provide a vehicle and battery tray thereof, connect in the frame through supporting beam and stiffening beam slope, can solve the structural strength of current battery tray not enough to receive torsion or extrusion deformation's problem easily.

The embodiment of the application provides a battery tray of a vehicle, which comprises a plate body, a frame and a beam assembly. The frame comprises two first frame bodies and two second frame bodies, and the two first frame bodies and the two second frame bodies are connected end to form an annular structure. The plate body is connected to the bottom of the frame, and an accommodating space is formed between the plate body and the frame, wherein the accommodating space is provided with a first central axis and a second central axis which are physically intersected, two first frame bodies are respectively positioned on two opposite sides of the first central axis, and two second frame bodies are respectively positioned on two opposite sides of the second central axis. The beam assembly is arranged in the accommodating space. The beam assembly comprises a supporting beam and a reinforcing beam, wherein the supporting beam is obliquely connected between two first frame bodies, and the reinforcing beam is obliquely connected between the adjacent first frame bodies and the adjacent second frame bodies.

In some embodiments, one end of the reinforcement beam is connected to the support beam on the first frame and the other end is connected to the second frame.

In some embodiments, the other end is located on the first axis.

In some embodiments, the beam assembly includes two support beams, the two support beams are staggered, and an intersection point of the two support beams is located on the first central axis and/or the second central axis.

In some embodiments, the beam assembly includes a plurality of the stiffening beams connected between adjacent ones of the first and second frames on opposite sides of the first central axis and on opposite sides of the second central axis, respectively.

In some embodiments, on one of the second frames, two of the reinforcement beams located at opposite sides of the first central axis are spaced apart by a predetermined distance, and intersect the first central axis in the extending direction.

In some embodiments, the beam assembly further includes a side beam disposed on the second frame within the predetermined distance and connected between two of the reinforcement beams.

In some embodiments, the first frames have a first length therebetween, and the reinforcement beam is connected to the second frames at a distance between 0.3 and 0.45 times the first length from one of the first frames, and between 0.5 and 0.7 times the first length from the other of the first frames.

In some embodiments, on the other second frame, two reinforcing beams located on opposite sides of the first central axis are connected to the first central axis.

In some embodiments, two of the support beams and the plurality of reinforcement beams are symmetrically disposed on opposite sides of the first central axis and on opposite sides of the second central axis, respectively.

In some embodiments, the support beam and the reinforcement beam partition a plurality of battery assembly spaces within the receiving space.

In some embodiments, the second frames have a second length therebetween, and the support beam is connected to the first frame at a distance between 0.2 and 0.3 times the second length from one of the second frames and between 0.7 and 0.85 times the second length from the other of the second frames.

The embodiment of the application also provides a vehicle, which comprises a vehicle body floor and the battery tray according to any embodiment, wherein one side of the frame, which faces away from the plate body, is combined with the vehicle body floor.

In an embodiment of the present application, the beam assembly includes a support beam and a reinforcement beam obliquely disposed in the frame, and partitions the receiving space in the frame into a plurality of battery assembly spaces. The support beams and the reinforcement beams may be one or more combinations, for example, in some embodiments of the present application, two support beams disposed in a staggered manner, and a plurality of reinforcement beams disposed at corners around the frame. And, the intersection point of the two support beams may be located at the intersection point of the first central axis and the second central axis, and the intersection point of the plurality of reinforcement beams or the extending direction may be located at the first central axis. Therefore, the supporting beams and the reinforcing beams can be symmetrically arranged in the frame, for example, the supporting beams and the reinforcing beams are mutually connected to form a 8-shaped structure, so that the frame can be supported by the cooperation of the connected supporting beams and the reinforcing beams in the longitudinal direction, the transverse direction and the oblique direction (namely the component force direction between the longitudinal direction and the transverse direction), the extrusion resistance and the torsion resistance of the battery tray are greatly improved, and the problem that the battery is easy to be extruded and deformed in the accommodating process of the battery is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a perspective view of a battery tray according to an embodiment of the present application.

Fig. 2 is an exploded view of a battery tray and a vehicle body floor according to an embodiment of the present application.

Fig. 3 is a top view of a battery tray according to an embodiment of the present application.

Fig. 4 is a graph of compressive properties of a typical battery tray and a battery tray of an embodiment of the present application.

Fig. 5 is a perspective view of a general battery tray.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Referring to fig. 1 to 3, the embodiment of the present application provides a battery tray 1 of a vehicle, which is suitable for being combined on a vehicle body floor 60 in an electric vehicle, for mounting a battery 70, such as a cylindrical power battery, and providing protection for the battery 70. The battery tray 1 includes a plate body 10, a frame 20, and a beam assembly 30. The plate body 10 is arranged at the bottom of the battery tray 1, and the frame 20 is arranged along the periphery of the plate body 10 and forms a containing space around the plate body 10. For the sake of clarity, in the embodiment of the present application, the accommodating space has a first central axis 11 and a second central axis 12 that are physically intersected on the board body 10, for example, virtual lines that are respectively intersected on the center or the gravity center of the board body 10 in the horizontal direction and the vertical direction, so as to distinguish the spatial positions on the board body 10, and not the solid line segment structures formed on the board body 10.

The frame 20 includes two first frames 21, 21 'and two second frames 22, 22'. The two first frames 21, 21 'are respectively located at two opposite sides of the first central axis 11, the two second frames 22, 22' are respectively located at two opposite sides of the second central axis 12, and the two second frames 22, 22 'are respectively connected between the two first frames 21, 21', so that the frame 20 forms a hollow structure with rectangular appearance. However, the embodiments of the present application are not limited thereto, and in some embodiments, the frame 20 may be manufactured in different shapes according to the size or arrangement of the batteries 70, depending on the actual requirements.

The beam assembly 30 is disposed in the accommodating space defined by the frame 20, and includes support beams 31, 31' and reinforcement beams 32, 32', 32", 32 '". The supporting beams 31, 31 'are connected between the two first frames 21, 21' in an inclined manner, and the reinforcing beams 32 are connected between the adjacent first frames 21, 21 'and the second frames 22, 22' in an inclined manner, so that the reinforcing beams 32, 32', 32", 32'" and the connected first frames 21, 21 'and the second frames 22, 22' are enclosed into a triangular structure, thereby achieving the supporting effect.

In the present embodiment, the number of the support beams 31, 31' and the reinforcement beams 32, 32', 32", 32 '" may be a combination of one or more, respectively. For example, in some embodiments of the present application, the beam assembly 30 includes two support beams 31, 31'. The two support beams 31, 31' are inclined in opposite directions and are staggered with each other, so that two triangular structures are enclosed between the two support beams 31, 31' and the two first frames 21, 21' on two opposite sides of the first central axis 11. The intersection point of the two support beams 31, 31 'may be located on the first central axis 11 or the second central axis 12, so that the two support beams 31, 31' are symmetrical to each other and uniformly supported on the frame 20. For convenience of explanation, in the drawings of the embodiments of the present application, the intersection point of the two support beams 31, 31 'is located at the intersection point of the first central axis 11 and the second central axis 12, so that the two support beams 31, 31' form two symmetrically arranged triangle structures in the central area of the frame 20, which not only can play a supporting role, but also can improve the rigidity of the whole structure, and is not easy to distort when suffering from an impact.

Meanwhile, in order to provide the frame 20 with a higher strength supporting capability, the number of the reinforcing beams 32, 32', 32", 32'" may be plural. The plurality of reinforcement beams 32, 32', 32", 32'" are disposed on opposite sides of the first central axis 11 and opposite sides of the second central axis 12, and opposite ends of each reinforcement beam 32, 32', 32", 32'" are respectively connected to the adjacent first frame 21, 21 'and second frame 22, 22'. For example, the first reinforcement beam 32 is connected between the adjacent first frame 21 and second frame 22 in an inclined manner; the second reinforcement beam 32 'is connected between the adjacent first frame 21' and second frame 22 in an inclined manner; the third reinforcing beam 32″ is connected between the adjacent first and second frames 21 'and 22'; and a fourth reinforcing beam 32 '"is connected between the adjacent first and second frames 21, 22' in an inclined manner such that the four reinforcing beams 32, 32', 32", 32' "are symmetrically disposed at four corners of the rectangular frame 20 and are connected between the adjacent first and second frames 21, 21', 22' in an inclined manner, thereby forming four triangle structures with the frame 20.

Furthermore, in some embodiments, the stiffening beams 32, 32', 32", 32'" are connected at one end of the first frame 21, 21 'and also to the corresponding support beams 31, 31', further increasing the structural rigidity of the frame 20 in the longitudinal direction.

Similarly, in some embodiments, the two reinforcement beams 32, 32', 32", 32 '" connected to the same second frame 22, 22' may be connected to each other. For example, the reinforcement beams 32, 32 'are connected to the second frame 22 at one end thereof on the first central axis 11, such that the two reinforcement beams 32, 32' at the one end of the second frame 22 provide support in the lateral direction of the frame 20 and such that the central region of the second frame 22 has dual support for the two reinforcement beams 32.

In this way, the support beams 31, 31' and the reinforcement beams 32, 32', 32", 32 '" are connected in the frame 20 to form a 8-shaped structure, so that the central region and four corners of the frame 20 are uniformly supported while having sufficient structural strength in a plurality of facing directions (transverse, longitudinal and oblique directions). Such a structure helps to improve stability and rigidity of the overall structure, and can partition the assembly space of the plurality of batteries 70 in the accommodating space to accommodate the plurality of batteries 70 (as shown in fig. 2), and to surround the respective battery groups to provide protection.

In addition, in some embodiments of the present application, the beam assembly 30 may be configured with the support beams 31, 31' and the reinforcement beams 32, 32', 32", 32 '" according to the actual requirements of different vehicle models. Thus, the plurality of support beams 31, 31' and/or reinforcement beams 32, 32', 32", 32 '" may be of a partially symmetrical and partially asymmetrical design in addition to the symmetrical arrangement described above.

For example, on one of the second frames 22', two reinforcing beams 32", 32 '" located at opposite sides of the first central axis 11 are symmetrical to each other, but the two reinforcing beams 32", 32 '" are connected to one end of the second frame 22' without intersecting such that the two reinforcing beams 32", 32 '" are spaced apart from each other by a predetermined distance (as shown in the right-side structure of fig. 3). The two reinforcing beams 32", 32 '" may be, but are not limited to, intersecting the first central axis 11 on the outer side of the second frame 22' in the extending direction, and may be in a form symmetrical to each other. On the other second frame 22, two reinforcing beams 32, 32' located at opposite sides of the first central axis 11 may be, but are not limited to, respectively connected to the same location on the second frame 22, for example, located on the first central axis 11 and symmetrical to each other.

Furthermore, in other embodiments of the present application, beam assembly 30 further includes a side beam 33. The side beam 33 is disposed on the second frame 22 'within a predetermined distance from the two reinforcing beams 32", 32'", and may be spaced apart from the two reinforcing beams 32", 32 '" by a gap or connected between the two reinforcing beams 32", 32'". For example, the length of the side beam 33 is equal to a predetermined distance, such that one side of the side beam 33 is attached to the second frame 22', and opposite ends are respectively connected to the two reinforcement beams 32. Accordingly, the central region of the second frame 22' may be supported by both the two reinforcement beams 32", 32 '" and the side beam 33 at the same time, and different support ranges in the lateral direction of the frame 20 are provided with a predetermined distance between the two reinforcement beams 32", 32 '".

Referring to fig. 3, in the structural dimension design of the frame 20 and the beam assembly 30, a first length Y is provided between the two first frames 21, 21', and a second length X is provided between the two second frames 22, 22'. Of the two reinforcing beams 32", 32 '" which are separated from each other by a predetermined distance, the distance between the position where the reinforcing beam 32 "is connected to the second frame 22' and one of the first frames 21 is a first distance Y1, and the distance between the position where the other reinforcing beam 32 '" is connected to the same second frame 22' and the first frame 21 is a second distance Y2. And, the distance between the position where one support beam 31' is connected to the first frame 21 and one of the second frames 22 is a third distance X1, and the distance between the position where the other support beam 31 is connected to the same first frame 21 and the second frame 22 is a fourth distance X2.

Wherein the first distance Y1 is between 0.3 and 0.45 times the first length Y, the second distance Y2 is between 0.5 and 0.7 times the first length Y, the third distance X1 is between 0.2 and 0.3 times the second length X, and the fourth distance X2 is between 0.7 and 0.85 times the second length X. It will be appreciated that the dimensional conditions of the frame 20 and beam assembly 30 may also be simplified and represented by the following equations [1] to [4 ]:

and

The above dimensional conditions allow the battery tray 1 of the present application to have a torsional rigidity and a resistance to impact that meet expectations within a viable range. For example, under the working condition that the loading ends are respectively loaded with the concentrated loads of +/-1100N to form torsional moment, the maximum displacement of the loading ends of the feasible region is less than or equal to 12mm. Meanwhile, the ranges of the lengths and distances within the above-mentioned dimensional conditions can be adapted to the objective conditions of actual process production without affecting the torsional rigidity and the impact resistance of the battery tray 1.

In some embodiments of the present application, the first distance Y1 is between 0.33 and 0.43 times the first length Y, the second distance Y2 is between 0.56 and 0.65 times the first length Y, and the third distance X1 is between 0.22 and 0.29 times the second length X, and the fourth distance X2 is between 0.71 and 0.82 times the second length X. In other embodiments of the present application, the first distance Y1 is 0.38 times the first length Y, the second distance Y2 is 0.605 times the first length Y, and the third distance X1 is 0.255 times the second length X, and the fourth distance X2 is 0.765 times the second length X.

It should be noted that, in some embodiments of the present application, the two supporting beams 31, 31' and the four reinforcing beams 32, 32', 32", 32 '" are symmetrically disposed on opposite sides of the first central axis 11 on the solid structure in the frame 20, so that the first length Y is the sum of the first distance Y1 and the second distance Y2.

Referring to fig. 4, a graph of the compressive performance of a typical battery tray and a battery tray according to an embodiment of the present application is shown. Wherein, the broken line is the force-strain curve of a general battery tray, and the solid line is the force-strain curve of the battery tray of the embodiment of the application. For a deformation bearing force of 50mm, the battery tray can only bear the acting force of 42KN, but the acting force which can be born by the battery tray of the embodiment of the application is 90KN, and the extrusion resistance is greatly improved by 114%. Therefore, according to practical test results, through the structural configuration of the frame and the beam assembly, the anti-extrusion and anti-torsion capabilities of the battery tray are greatly improved, and good supporting and protecting effects can be provided for the battery.

The technical solutions in the embodiments of the present application are further described below in conjunction with specific application scenarios.

And (3) applying the first scene. Two supporting beams and four stiffening beams are symmetrically arranged on the frame. The stiffening beams are connected at one end of the first frame body and also connected with the supporting beams, and the two stiffening beams of each second frame body are also connected with each other on the first central axis, so that the first frame body has double support of the supporting beams and the stiffening beams, and the second frame body has double support of the two stiffening beams.

And (3) applying a second scene. The two supporting beams are symmetrically arranged, and the reinforcing beams at two opposite sides of the second central axis are asymmetrically arranged in the solid structure. On one of the first frames, two reinforcing beams positioned on two opposite sides of the first central axis are symmetrical to each other, one ends of the two reinforcing beams connected with the second frame are not intersected, and are respectively connected with two ends of the side beams, but extension lines of the two reinforcing beams are intersected on the first central axis outside the frame. Therefore, as shown in fig. 3, in the solid structure, two support beams 31, 31 'and two reinforcement beams 32", 32'" are symmetrically disposed on opposite sides of the first central axis 11 in a polygonal structure formed on the right side of the second central axis 12. The polygonal structure formed by the two support beams 31, 31 'and the two reinforcement beams 32, 32' on the left side of the second central axis 12 is symmetrically disposed on the opposite sides of the first central axis 11. Furthermore, in some embodiments of the present application, the polygonal structures located on the left and right sides of the second central axis 12 are disposed in a symmetrical manner to each other. In other embodiments of the present application, the polygonal structures located on the left and right sides of the second central axis 12 may also be disposed in an asymmetric manner (as shown in fig. 3). Therefore, in this application scenario, one of the second frames has a dual support of two reinforcement beams, while the other second frame can be simultaneously supported by two reinforcement beams and a side beam.

From the above description, the embodiment of the application utilizes the support beam and the stiffening beam to connect in the frame to form a 8-shaped structure, so that not only the central area and four corners of the frame are uniformly supported, but also the extrusion resistance of the battery tray is greatly improved. Meanwhile, the 8-shaped structure also separates a plurality of spaces capable of accommodating batteries, and effective support and protection are provided for the flattened battery structure design.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (13)

1. A battery tray for a vehicle, comprising:

the frame comprises two first frame bodies and two second frame bodies, and the two first frame bodies and the two second frame bodies are connected end to form an annular structure;

the plate body is connected to the bottom of the frame, and an accommodating space is formed between the plate body and the frame, wherein the accommodating space is provided with a first central axis and a second central axis which are physically intersected, the two first frame bodies are respectively positioned at two opposite sides of the first central axis, and the two second frame bodies are respectively positioned at two opposite sides of the second central axis; and

the beam assembly is arranged in the accommodating space and comprises a supporting beam and a reinforcing beam, the supporting beam is obliquely connected between the two first frame bodies, and the reinforcing beam is obliquely connected between the adjacent first frame bodies and the second frame bodies.

2. The battery tray of claim 1, wherein one end of the reinforcement beam is connected to the support beam at the first frame and the other end is connected to the second frame.

3. The battery tray of claim 2, wherein the other end is located on the first axis.

4. The battery tray of claim 1, wherein the beam assembly comprises two of the support beams, the two support beams being staggered, and the points of intersection of the two support beams being located on the first central axis and/or the second central axis.

5. The battery tray of claim 4, wherein the beam assembly comprises a plurality of the stiffening beams connected between adjacent ones of the first and second frames on opposite sides of the first central axis and on opposite sides of the second central axis, respectively.

6. The battery tray according to claim 5, wherein two of the reinforcement beams located on opposite sides of the first central axis are spaced apart from each other by a predetermined distance on one of the second frames, and intersect the first central axis in the extending direction.

7. The battery tray of claim 6, wherein the beam assembly further comprises a side beam disposed on the second frame within the predetermined distance and connected between two of the reinforcement beams.

8. The battery tray of claim 6, wherein a first length is provided between two of the first frames, the reinforcement beam is coupled to the second frames at a distance between 0.3 and 0.45 times the first length from one of the first frames, and between 0.5 and 0.7 times the first length from the other of the first frames.

9. The battery tray according to claim 6, wherein two of the reinforcing beams located on opposite sides of the first central axis are connected to the first central axis on the other of the second frames.

10. The battery tray of claim 5, wherein two of the support beams and the plurality of reinforcement beams are symmetrically disposed on opposite sides of the first central axis and on opposite sides of the second central axis, respectively.

11. The battery tray of claim 1, wherein the support beam and the reinforcement beam separate a plurality of battery assembly spaces within the receiving space.

12. The battery tray of claim 1, wherein a second length is provided between two of the second frames, the support beam is attached to the first frame at a distance between 0.2 and 0.3 times the second length from one of the second frames, and between 0.7 and 0.85 times the second length from the other of the second frames.

13. A vehicle, characterized by comprising: a vehicle body floor and a battery tray as claimed in any one of claims 1 to 12, wherein a side of the frame facing away from the plate body is bonded to the vehicle body floor.