CN209786043U

CN209786043U - electric automobile and battery box thereof

Info

Publication number: CN209786043U
Application number: CN201921100815.1U
Authority: CN
Inventors: 黄河; 刘进程; 张彪; 李启辉
Original assignee: CRRC Electric Vehicle Co Ltd
Current assignee: CRRC Electric Vehicle Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2019-12-13
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses an electric automobile and battery box thereof, including the box covering, wherein, the side of bending of box covering has protruding muscle, protruding muscle is connected the flange face at side, bottom surface and the top of box covering. The side face, the bottom face and the flange face of the box body skin are connected together by adding the convex ribs, the flatness of the side face and the flange face of the box body and the strength of the side face of the box body are increased, the buckling deformation is prevented, and the rigidity of the bending faces of the two sides of the battery box body is improved.

Description

Electric automobile and battery box thereof

Technical Field

The utility model relates to an electric automobile's technical field, in particular to electric automobile and battery box thereof.

background

The power battery is the only power energy source of the pure electric vehicle at present, and is one of the important factors influencing the performance of the pure electric vehicle. The security of battery package directly influences the security of whole car, at present, adopts the battery box as the carrier of group battery, plays the key role to group battery safety work and protection. Inside the battery box was placed to the battery, connected each electric core through the mode of busbar, electric core encapsulates through the box.

The bending surfaces on two sides of the sheet metal box body in the prior art are planes, so that the sheet metal box body is poor in self strength and large in deformation. After the reinforcing beams on the two sides are welded, the flatness of the two sides is greatly influenced, and the flatness of the bending surfaces on the two sides of the box body is difficult to ensure. If the flatness and the rigidity of the bending surfaces on the two sides of the sheet metal box body are not enough, the situation of unqualified air tightness exists in the process of installing the sheet metal box body and the upper cover of the box body.

Therefore, it is an urgent technical problem to be solved by those skilled in the art how to provide a battery box to improve the rigidity of the bending surfaces at two sides of the battery box.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a battery box to improve the rigidity of the bending surfaces on the two sides of the battery box. Another object of the utility model is to provide an electric automobile with above-mentioned battery box.

In order to achieve the above object, the utility model provides a following technical scheme:

The battery box body comprises a box body skin, wherein a bent side face of the box body skin is provided with a convex rib, and the convex rib is connected with the side face, the bottom face and the flange face at the top of the box body skin.

Preferably, in the battery box, the two bent side surfaces of the box skin are provided with convex ribs.

Preferably, in the above battery case, each of the side faces has three of the ribs.

Preferably, in the battery box, the rib and the side face are integrally formed by stamping.

Preferably, in the above battery box, the battery box further includes a bearing beam group connecting the two side faces, and the bearing beam group is attached to the outer side of the bottom face.

Preferably, in the above battery box, the load-bearing beam assembly includes:

the bearing beams are connected with the two side surfaces and are connected with the bottom surface in an attaching mode, and the bearing beams are uniformly arranged along the bottom surface;

the reinforcing beam is connected with the adjacent bearing beams, and the bearing beams and the reinforcing beams are vertically arranged.

Preferably, the battery case further includes:

The end plate positioning support is arranged on the inner side of the bottom surface and used for positioning an end plate of the power battery;

And the battery cell positioning bracket is arranged on the inner side of the side surface and used for positioning the battery cell of the power battery.

Preferably, the battery box further comprises a fixing bracket arranged on the outer side of the side surface and used for fixing the battery box, and a lifting lug used for lifting the battery box.

an electric automobile, includes the battery box, wherein, the battery box is any above-mentioned battery box.

According to the technical scheme provided by the utility model, the utility model discloses a battery box links together side, bottom surface and the flange face of box covering through increasing protruding muscle, has increased the side of box and the roughness of flange face and the intensity of the side of box and has prevented warpage, has improved the rigidity of the face of bending of battery box both sides promptly.

Drawings

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic front structural view of a battery case disclosed in an embodiment of the present invention;

Fig. 2 is a schematic back structure view of a battery box disclosed in an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a box skin of the battery box disclosed in the embodiment of the present invention.

Detailed Description

In view of this, the core of the present invention is to provide a battery box to improve the rigidity of the bending surfaces on both sides of the battery box. Another core of the utility model is to provide an electric automobile with above-mentioned battery box.

in order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-3, the utility model discloses a battery box, including box covering 1, wherein, this box covering 1's the side 11 of bending has protruding muscle 8 to protruding muscle 8 connects the flange face 10 at side 11, bottom surface 9 and the top of box covering 1. Through increasing protruding muscle 8 in this application, link together side 11, bottom surface 9 and the flange face 10 of box covering 1, increased the roughness of the side 11 of box and flange face 10 and the intensity of the side 11 of box and prevented buckling deformation, improved the rigidity of the face of bending of battery box both sides promptly.

In a specific embodiment, the two bent side surfaces 11 of the box skin 1 are provided with the convex ribs 8, so that the flange surface 10, the bottom surface 9 and the side surfaces 11 at the top are connected into a whole through the convex ribs 8 in a vertical penetrating manner, and the rigidity of the side surfaces is improved. Specifically, the rib 8 is located inside the side surface 11, and in practice, may be located outside the side surface 11.

Preferably, each side 11 all has three protruding muscle 8, and in practice, can select the number of protruding muscle 8 according to the needs of difference, and all in the protective scope, to protruding muscle 8 on two sides 11, but symmetrical arrangement. The dimensions of the ribs 8 are not described in detail here, as long as the strength requirements of the battery case are met.

Protruding muscle 8 in this application and side 11 stamping forming as an organic whole reduce the number of part, still can improve the stability of being connected of protruding muscle 8 and battery box, improve the intensity of battery box. In practice, screw connections may also be used.

In a further embodiment, the battery box further comprises a bearing beam assembly connected with the two side surfaces 11, and the bearing beam assembly is attached to the outer side of the bottom surface 9. By adding the load beam assembly, the strength of the bottom surface 9 can be improved, the flatness of the bottom surface 9 can be increased, and buckling deformation can be prevented.

Specifically, spandrel girder subassembly in this application includes: a load beam 4 and a stiffening beam 5. The bearing beams 4 are connected with the two side surfaces 11, the bearing beams 4 are connected with the bottom surface 9 in an attaching mode, in practice, the bearing beams 4 are multiple and are uniformly arranged along the bottom surface 9, and therefore the strength and the flatness between the two side surfaces 44 and the bottom surface 9 are improved; furthermore, the above-described reinforcement beam 5 connects adjacent load beams 4, and the load beams 4 are arranged perpendicular to the reinforcement beam 5. The reinforcing beam 5 can increase the strength of the bearing beam 4, and the reinforcing beam 5 and the bearing beam 4 are vertically arranged, so that the strength of the bottom surface 9 is further improved.

In a further embodiment, the battery box further includes an end plate positioning bracket 6 and a cell positioning bracket 2. The end plate positioning bracket 6 is used for positioning the end plate, and the power battery is fixed on the end plate; the battery cell positioning support 2 is used for positioning the battery cell of the power battery. Can guarantee the installation that power battery can be stable in the battery box through above-mentioned setting. Specifically, the end plate positioning bracket 6 is fixed on the inner side of the bottom plate 9, i.e. on the inner side of the battery box, and the cell positioning bracket 2 is installed on the inner side of the side surface 11.

in order to fix the battery box body, the battery box body further comprises a fixing bracket 7 arranged outside the side surface 11 and used for fixing the battery box body and a lifting lug 3 used for lifting the battery box body. The positions and dimensions of the fixing bracket 7 and the lifting lug 3 are not limited in detail here.

In addition, this application has still disclosed an electric automobile, including the battery box, and is specific, and this battery box is the battery box disclosed in the above-mentioned embodiment, therefore, the electric automobile that has this battery box also has above-mentioned all technological effects, and the repeated description is no longer repeated here.

the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. 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. The battery box body comprises a box body skin and is characterized in that a bent side face of the box body skin is provided with a convex rib, and the convex rib is connected with the side face, the bottom face and the flange face at the top of the box body skin.

2. the battery box of claim 1, wherein the box skin has ribs on both sides of the bend.

3. the battery case according to claim 2, wherein each of the side faces has three of the ribs.

4. The battery box body as claimed in claim 1, wherein the rib is integrally formed with the side surface by press molding.

5. The battery box body of claim 1, further comprising a bearing beam group connecting the two side surfaces, wherein the bearing beam group is attached to the outer side of the bottom surface.

6. The battery box of claim 5, wherein the load beam assembly comprises:

7. The battery box of claim 1, further comprising:

8. The battery box body as claimed in claim 1, further comprising a fixing bracket arranged on the outer side of the side face and used for fixing the battery box body and a lifting lug used for lifting the battery box body.

9. An electric vehicle comprising a battery case, wherein the battery case is the battery case according to any one of claims 1 to 8.