CN215771314U

CN215771314U - Battery box

Info

Publication number: CN215771314U
Application number: CN202122172934.1U
Authority: CN
Inventors: 金朝阳; 韩晓明
Original assignee: Kaibo Energy Technology Jiangsu Co ltd
Current assignee: Zhongchuangxin Aviation Technology Jiangsu Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-08
Anticipated expiration: 2031-09-09

Abstract

The utility model relates to a battery box. The battery box comprises at least one longitudinal beam and at least one cross beam, and at least one side wall of the longitudinal beam is provided with at least one first insertion part; the end part of the cross beam is provided with a second insertion part which can be in insertion fit with the first insertion part, and the cross beam is connected with the longitudinal beam through the insertion fit of the second insertion part and the first insertion part. According to the battery box, the longitudinal beams are connected with the cross beams in an inserted manner, so that part of longitudinal downward impact load applied to the longitudinal beams is decomposed into transverse impact load and applied to the cross beams, the bearing capacity of the longitudinal beams and the cross beams in the battery box is improved, and the battery box has the advantages of good safety performance, long service life and light weight.

Description

Battery box

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery box.

Background

In the design process of the battery box, the longitudinal beams and the cross beams bear the weight of the whole module, the longitudinal beams and the cross beams are indispensable components as bearing beams, and the structures and the connection modes of the longitudinal beams and the cross beams determine the load capacity and the strength of the longitudinal beams and the cross beams, so that the stability of the whole battery box is influenced. However, the overlapping portion between the side member and the cross member is most likely to fail after being subjected to a force, and is also a portion which is difficult to design.

In current battery box, adopt ladder overlap joint structural connection between longeron and the crossbeam mostly to seam crossing welded fastening at the connection face, ladder overlap joint structure is though simple and the assembly of being convenient for, but the longeron and the crossbeam of overlap joint structure receive the influence of external forces such as jolting and vertical decurrent impact very easily in the use or after using for a long time, cause the overlap joint structural instability, lead to the bearing capacity of longeron and crossbeam limited, and occupation volume space is big.

SUMMERY OF THE UTILITY MODEL

One object of the utility model is to provide a battery box capable of improving the bearing capacity of longitudinal beams and transverse beams.

To achieve the above object, the present invention provides a battery box, comprising:

at least one longitudinal beam, wherein at least one side wall of the longitudinal beam is provided with at least one first insertion part;

the end part of the cross beam is provided with a second insertion part which can be in insertion fit with the first insertion part, and the cross beam is connected with the longitudinal beam through the insertion fit of the second insertion part and the first insertion part.

The technical scheme provided by the application can achieve the following beneficial effects:

according to the battery box, the longitudinal beams and the cross beams are connected in a splicing fit manner, and part of longitudinal downward impact load applied to the longitudinal beams can be decomposed into transverse impact load and applied to the cross beams, so that the bearing capacity of the longitudinal beams and the cross beams is improved, and the connection reliability of the longitudinal beams and the cross beams is improved, so that the battery box has the advantages of good safety performance, long service life and light weight.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1 is a schematic view of a first construction of a battery case of the present invention;

FIG. 2 is a schematic structural view of a side rail in the battery box shown in FIG. 1;

FIG. 3 is a schematic structural view of a cross member in the battery box shown in FIG. 1;

FIG. 4 is a schematic structural view of another perspective of the cross beam in the battery box shown in FIG. 1;

FIG. 5 is a schematic assembled cross-sectional view of cross and side rails in the battery box of FIG. 1;

FIG. 6 is a schematic view of a second construction of the battery case of the present invention;

FIG. 7 is a schematic structural view of the side rails in the battery box shown in FIG. 6;

FIG. 8 is a schematic structural view of a cross member in the battery box shown in FIG. 6;

FIG. 9 is a schematic structural view from another perspective of the cross beam in the battery box shown in FIG. 6;

fig. 10 is a third cross-sectional structural view of the stringer of the present invention.

The reference numbers illustrate:

10. a stringer; 11. connecting the terraces; 12. a first insertion part; 121. a first connection face; 122. a second connection face; 123. a third connection surface; 13. transverse reinforcing ribs;

20. a cross beam; 21. a second mating portion.

Detailed Description

The present application is described in further detail below with reference to the figures and examples. The features and advantages of the present application will become more apparent from the description.

The word "embodiment" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "an embodiment" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 6, the present invention provides a battery box, which includes at least one longitudinal beam 10 and at least one transverse beam 20, at least one sidewall of the longitudinal beam 10 is provided with at least one first insertion connection part 12; the end of the cross beam 20 is provided with a second inserting part 21 which can be inserted and matched with the first inserting part 12, and the connection between the longitudinal beam 10 and the cross beam 20 is realized through the insertion and matching of the second inserting part 21 and the first inserting part 12.

As shown in FIG. 5, in the battery box of the present invention, the longitudinal beams 10 and the transverse beams 20 are connected by a plug-in fit, so that part of the longitudinal (Z direction) downward impact load (F) applied to the longitudinal beams 10 can be decomposed into a transverse (Y direction) impact load and applied to the transverse beams 20, thereby improving the bearing capacity of the longitudinal beams 10 and the transverse beams 20.

Example 1

As shown in fig. 1 and 2, the battery box of the present invention includes a longitudinal beam 10 and a cross beam 20, wherein two side walls of the longitudinal beam 10 are respectively provided with a connecting step 11, the connecting steps 11 are respectively provided with a first inserting portion 12, and the first inserting portion 12 is a slot; the second plug part 21 is a protrusion which is plugged and matched with the first plug part 12. Specifically, the first plugging portion 12 has three connection surfaces, which are a first connection surface 121, a second connection surface 122 and a third connection surface 123 respectively; the first connection surface 121 and the third connection surface 123 are respectively connected to two ends of the second connection surface 122, the first connection surface 121 and the third connection surface 123 are disposed oppositely, a first included angle is formed between the first connection surface 121 and the second connection surface 122, a second included angle is formed between the third connection surface 123 and the second connection surface 122, and the first included angle and the second included angle are obtuse angles, preferably, the first included angle and the second included angle are both 135 °.

The first plug-in part 12 of this embodiment sets up on connecting the halfpace 11 for be connected between first plug-in part 12 and the longeron 10 is simple and convenient, and because longeron 10 and crossbeam 20 adopt the mode of pegging graft to connect, connects halfpace 11 and can not increase the whole volume of longeron 10 yet, has avoided prior art to adopt the overlap joint mode to lead to the longeron to occupy too much battery box's the condition emergence of inner space, thereby has improved the inner space utilization of battery box.

Specifically, as shown in fig. 2, 3 and 4, the cross sections of the slots of the first inserting-connecting part 12 and the protrusions of the second inserting-connecting part 21 are both trapezoidal, preferably, the opening edge of the slot is a long trapezoidal bottom edge, the long protruding bottom edge is connected with the cross beam 20, and the purpose of double-layer overlapping can be achieved by the trapezoidal structure. Under the condition of meeting the same bearing capacity with the lap joint structure in the prior art, the size of the slot and the bulge matched with the slot can be designed to be smaller, so that the utilization rate of the space of the battery box is improved, and the structure of the longitudinal beam 10 and the cross beam 20 after being spliced is more stable.

Further, considering that when two lateral beams 20 are respectively connected to two sides of the longitudinal beam 10, and the two lateral beams 20 are adjacent or oppositely disposed, after the longitudinal beam 10 and the two lateral beams 20 are inserted into each other, the lateral beams 20 located at two sides of the longitudinal beam 10 generate opposite extrusion forces to the longitudinal beam 10, so that the longitudinal beam 10 deforms, and the longitudinal beam 10 deforms to prevent the extrusion, in this embodiment, a transverse reinforcing rib 13 is disposed on an inner wall of the longitudinal beam 10, and the transverse reinforcing rib 13 may penetrate through the entire longitudinal beam 10, or may be disposed only on a portion connected with the lateral beam 20, so as to enhance the transverse strength of the longitudinal beam 10.

Still further, the edge of the end of the second inserting portion 21 is welded and fixed to the connecting step 11 of the longitudinal beam 10, and compared with the overlapping manner in the prior art, the structure in this embodiment can increase the length of the weld in a limited space, which not only can improve the manufacturability, but also can improve the strength of the weld due to the increase of the welding length, and enhance the bearing capacity of the weld against the collision in the transverse direction (X direction) from the longitudinal beam 10 (see fig. 5).

Example 2

The parts of this embodiment that are the same as those of embodiment 1 are not repeated, and refer to the foregoing embodiments specifically, and only the differences will be described here.

As shown in fig. 6 and 7, in the present embodiment, the first insertion portion 12 is provided with a protrusion on two side walls of the longitudinal beam 10, the second insertion portion 21 is a slot (as shown in fig. 8 and 9) engaged with the protrusion of the first insertion portion 12 of the longitudinal beam 10, the cross section of the slot and the protrusion is trapezoidal, preferably, the opening edge of the slot is a long bottom edge of the trapezoid, the long bottom edge of the protrusion is connected to the longitudinal beam 10, and the function of the trapezoidal structure engaged with each other is the same as that of embodiment 1.

Example 3

The parts of this embodiment that are the same as those of embodiment 1 are not described again, and only the differences will be described here.

Referring to fig. 10, in the present embodiment, the first insertion part 12 and the second insertion part 21 have triangular cross sections, which facilitates insertion, so that the longitudinal beam 10 and the transverse beam 20 can be easily assembled.

It should be noted that:

the parameters of the longitudinal beams 10 and the transverse beams 20 in the above embodiments, such as the mutual positional relationship, the number, the size, the material, and the like, are not limited to the above embodiments, and can be adjusted accordingly according to actual needs. For example: only one first plug-in part 12 can be arranged on one longitudinal beam 10, and then the longitudinal beam 10 can be connected with only one cross beam 20; a longitudinal beam 10 may also be correspondingly connected to a plurality of cross beams 20, that is, a plurality of first inserting portions 12 are disposed on the longitudinal beam 10, for example, if three first inserting portions 12 disposed at intervals are disposed on one longitudinal beam 10, the longitudinal beam 10 may be connected to three cross beams 20, and if six first inserting portions 12 disposed at intervals are disposed on one longitudinal beam 10, the longitudinal beam 10 may be connected to six cross beams 20.

The specific sizes of the first inserting part 12 and the second inserting part 21 can be set according to actual use requirements, as long as the required bearing capacity can be met, and details are not described herein.

The insertion angle of the longitudinal beam 10 and the cross beam 20 arranged in the battery box can be adjusted according to actual needs, as long as the stable insertion structure of the longitudinal beam 10 and the cross beam 20 can be met.

Whether the connecting terraces 11 on the two side walls of the longitudinal beam 10 are arranged or not can be determined according to actual needs, namely, the connecting terraces 11 can be arranged on the two side walls of the longitudinal beam 10, and the first inserting parts 12 are arranged on the connecting terraces 11; the first inserting portion 12 may be directly provided on both side walls of the longitudinal beam 10.

The specific angles of the first included angle and the second included angle can also be determined according to actual needs, such as but not limited to 120 °, 135 ° or 150 ° and the like; and the connection mode between the connection surfaces can be correspondingly adjusted according to the needs, so that the purpose of increasing the bearing capacity of the longitudinal beams 10 and the transverse beams 20 of the battery box can be achieved.

The shape of the cross section of the first socket portion 12 is not limited to the trapezoidal or triangular shape in the above embodiment, and may be provided in other shapes as needed as long as the purpose of decomposing a part of the longitudinal downward impact load applied to the side member 10 into the lateral impact load and applying the lateral impact load to the cross member 20 is satisfied.

The welding position of the second inserting portion 21 and the longitudinal beam 10 is not limited to the above-mentioned connecting step 11, and when in use, the second inserting portion 21 and the side wall surface of the longitudinal beam 10, the joint connected with the first inserting portion 12 or other welding methods can be set as required, as long as the purpose of increasing the bearing capacity of the longitudinal beam 10 and the cross beam 20 is satisfied.

In the above embodiment, the position, number, length, width, material, etc. of the transverse reinforcing ribs 13 transversely disposed in the longitudinal beam 10 may be determined according to actual needs; it is also possible to provide longitudinal beads staggered or perpendicularly connected to the transverse beads 13, as long as the longitudinal beams 10 are prevented from being crushed by the cross beams 20 on both sides thereof.

When the battery box is used, the peripheries of the longitudinal beam 10 and the transverse beam 20 are further connected with edge beams, the outer sides of the edge beams are fixedly connected with the outer shell of the battery box, and the connecting structures of the inner sides of the edge beams and the longitudinal beam 10 and the transverse beam 20 include, but are not limited to, lap joint structures, plug-in connection structures or butt joint structures.

In conclusion, the battery box comprises the longitudinal beam and the cross beam spliced with the longitudinal beam, and the splicing structure can decompose part of impact load on the longitudinal beam and act on the cross beam, so that the connection reliability of the longitudinal beam and the cross beam is improved, and the battery box has the advantages of good safety performance, long service life and light weight;

according to the battery box, the first inserting part is arranged on the connecting step, so that the connection between the first inserting part and the longitudinal beam is simple and convenient, the situation that the longitudinal beam occupies too much internal space of the battery box due to the lap joint mode is avoided, and the utilization rate of the internal space of the battery box is improved.

While the utility model has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model. Any person skilled in the art should also be able to cover the technical scope of the present invention by equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept.

The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the utility model, and any modifications, equivalents, improvements, etc. made therein are intended to be included within the scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery box, characterized in that the battery box comprises:

the end part of the beam is provided with a second insertion part which can be in insertion fit with the first insertion part, and the longitudinal beam is connected with the beam through the insertion fit of the second insertion part and the first insertion part.

2. The battery box according to claim 1, wherein at least one of the side walls of the longitudinal member is provided with at least one connection step, and the first insertion portion is provided on the connection step.

3. The battery box of claim 2, wherein the first insertion portion is a slot provided on the connecting step, and the second insertion portion is a protrusion engaged with the slot.

4. The battery box of claim 2, wherein the first insertion portion is a protrusion disposed on the connecting step, and the second insertion portion is a slot engaged with the protrusion.

5. A battery box according to claim 3 or 4, characterized in that the cross-section of the slot and the cross-section of the protrusion are both trapezoidal.

6. A battery box according to claim 3 or 4, characterized in that the cross-section of the slot and the cross-section of the protrusion are both triangular.

7. The battery box according to claim 1, wherein a lateral reinforcing rib is attached to an inner wall surface of the side member.

8. The battery box according to claim 2, wherein an edge of an end of the second insertion-fitting portion is welded and fixed to the connection step.