CN210576109U

CN210576109U - Lightweight aluminum box structure

Info

Publication number: CN210576109U
Application number: CN201921631688.8U
Authority: CN
Inventors: 李世明; 徐秋鹏; 李鑫; 毛晓翔
Original assignee: Jiangxi Yotteo Auto Technology Co ltd
Current assignee: Jiangxi Yotteo Auto Technology Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-19
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a lightweight aluminum box body structure, which comprises an upper box cover and a lower box body, wherein the upper box cover is fixedly arranged on the upper part of the lower box body through bolts, and a battery module and accessories thereof are arranged between the upper box cover and the lower box body; the lower box body comprises a bottom plate, the upper surface of the bottom plate is welded with a frame section bar, the frame section bar comprises a first section bar, a fourth section bar and a fifth section bar, the inner side of the frame section bar is fixedly welded with a second section bar and a third section bar, the outer side of the first section bar is provided with a sealing plane, and the upper surface of the sealing plane is provided with a rivet nut. The utility model discloses a box and high strength combined material's upper box cover under the light aluminium alloy, box intensity satisfy under the condition of using, box weight descends, and the lower box comprises a plurality of section bar welding, and the lower box is inside not to have little installing support, and the location is convenient, and each hole site precision can better guarantee.

Description

Lightweight aluminum box structure

Technical Field

The utility model relates to an electric motor car battery technical field specifically is a lightweight aluminum box structure.

Background

Nowadays, new energy automobiles mainly using electric vehicles are rapidly developed, and the driving range of the electric vehicles is more and more required by people. The battery pack is used as a core energy supply component of the electric vehicle, and the improvement of the charging capacity and the energy density of the battery pack has great influence on the driving range of the electric vehicle, so that the weight of the battery pack is reduced as much as possible, and the development of a light box body is particularly important.

The traditional battery pack adopts steel welding upper and lower boxes, the sheet metal box structure is basically consistent, the sheet metal covering and the inner and outer reinforcing ribs are welded to form the traditional battery pack, the weight of the box is relatively heavier, the forming process is more, the weight is not easy to decrease, and the energy consumption of the electric vehicle is easily increased. Therefore, it is desirable to provide a lightweight aluminum box mechanism with simple forming process and light weight.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lightweight aluminium box structure adopts box and high strength combined material's upper box cover under the light aluminium alloy, and box intensity satisfies under the condition of using, and box weight descends, and the lower box comprises a plurality of section bar welding, and the lower box is inside not to have little installing support, and the location is convenient, and each hole site precision can better guarantee to solve the problem that proposes in the above-mentioned background art.

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

a lightweight aluminum box body structure comprises an upper box cover and a lower box body, wherein the upper box cover is fixedly arranged at the upper part of the lower box body through bolts, and a battery module and accessories thereof are arranged between the upper box cover and the lower box body; the lower box body comprises a bottom plate, the upper surface of the bottom plate is welded with a frame section bar, the frame section bar comprises a first section bar, a fourth section bar and a fifth section bar, the inner side of the frame section bar is fixedly welded with a second section bar and a third section bar, the outer side of the first section bar is provided with a sealing plane, and the upper surface of the sealing plane is provided with a rivet nut.

Preferably, a sealing gasket is arranged at the fixed assembly position between the upper box cover and the lower box body.

Preferably, the battery module is provided with one layer, two layers or three layers.

Preferably, the welding surfaces of the first profile, the fourth profile and the fifth profile of the frame profile and the bottom plate are hermetically fixed by full welding.

Preferably, the first profile, the second profile, the third profile, the fourth profile and the fifth profile are all made of light aluminum alloy profiles.

Preferably, the upper box cover is a glass fiber cover body made of composite materials, flanges are arranged on two sides of the upper box cover, and the flanges on the two sides of the upper box cover are fixedly arranged on the rivet nuts of the lower first sectional material through bolts.

Preferably, the sealing plane of the lower box body is fixedly connected with a positioning pin, and the flanging of the upper box cover is provided with a positioning hole corresponding to the positioning pin.

Preferably, the second profile and the third profile serving as the reinforcing beam are provided with stepped surfaces for mounting the battery module.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model adopts the lower box body of the light aluminum profile and the upper box cover of the high-strength composite material, the weight of the box body is reduced under the condition that the strength of the box body meets the use requirement, the lower box body is formed by welding a plurality of profiles, no small mounting bracket is arranged inside the lower box body, the positioning is convenient, and the precision of each hole site can be better ensured;

2. the aluminum profile structure adopted by the utility model is hollow, the weight is further reduced, the section design of the profile is simple, the change is flexible, the design efficiency is improved, the profile extrusion process is simple, and the production efficiency is higher; and the aluminum alloy has better corrosion resistance, and the box body can achieve comprehensive corrosion resistance by matching with the surface coating, so that the service life is prolonged.

3. Because the utility model discloses a plurality of aluminum alloy section bar welding are constituteed, and different project battery package can share the section bar cross-section, shorten development cycle to developing the project with the platform, reduce development cost and have the significance.

Drawings

Fig. 1 is a schematic view of an assembly structure of the present invention;

FIG. 2 is a schematic view of the welding structure of the lower case of the present invention;

fig. 3 is a schematic structural diagram of a first section bar and a cross section thereof according to the present invention;

FIG. 4 is a schematic structural diagram of a second profile and a cross section thereof according to the present invention;

fig. 5 is a schematic structural view of a third section bar and a cross section thereof;

fig. 6 is a schematic structural view of a fourth section bar and a cross section thereof;

fig. 7 is a schematic structural diagram of a fifth section bar and a cross section thereof.

In the figure: 1. a first profile; 2. a second profile; 3. a third section bar; 4. a fourth section bar; 5. a fifth section bar; 7. an upper box cover; 8. a lower box body; 9. a base plate; 10. a battery module; 11. sealing the plane; 12. pulling and riveting the nut; 13. and a positioning pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the lightweight aluminum box structure comprises an upper box cover 7 and a lower box body 8, wherein the upper box cover 7 is fixedly arranged on the upper part of the lower box body 8 through bolts, and a battery module 10 and accessories thereof are arranged between the upper box cover 7 and the lower box body 8; lower box 8 is including bottom plate 9, and the upper portion surface welding of bottom plate 9 has the frame section bar, and the frame section bar is including first section bar 1, fourth section bar 4 and fifth section bar 5, and the inboard fixed welding of frame section bar has second section bar 2 and third section bar 3, and the outside of first section bar 1 is provided with sealed plane 11, and surface mounting has rivet nut 12 on the sealed plane 11.

A sealing gasket is arranged at the fixed assembly position between the upper box cover 7 and the lower box body 8. The battery module 10 is provided with one layer, two layers, or three layers. The welding surfaces of the first section bar 1, the fourth section bar 4 and the fifth section bar 5 of the frame section bar and the bottom plate 9 are fixed in a sealing mode by full welding. The first section bar 1, the second section bar 2, the third section bar 3, the fourth section bar 4 and the fifth section bar 5 are all set to be light aluminum alloy section bars. The upper box cover 7 is a glass fiber cover body made of composite materials, flanges are arranged on two sides of the upper box cover 7, and the flanges on the two sides of the upper box cover 7 are fixedly installed on the rivet nuts 12 of the lower first section bar 1 through bolts. The sealing plane 11 of the lower box body 8 is fixedly connected with a positioning pin 13, and the flanging of the upper box cover 7 is provided with a positioning hole corresponding to the positioning pin 13. The second profile 2 and the third profile 3, which are reinforcing members, are provided with stepped surfaces for attaching the battery modules 10.

The upper box cover 7 is molded by using a lightweight composite material, the lower box body 8 is formed by welding aluminum alloy sections with various sections, and the battery module 10 (the battery module 10 is not limited to one layer) and related accessories are arranged in the lower box body 8. This scheme adopts multiple cross-section light aluminium alloy to splice box 8 down, and different cross-section bars adopt two kinds of fastening standard components of rivet nut 12 and steel wire swivel nut to carry out mechanical connection respectively, and the section bar plays the box on the box and strengthens, install the battery module, with upper cover cooperation sealed, with whole car bracket installation effect. The section design of the section is flexible, the section can be adjusted according to the structural installation requirement, the aluminum extrusion processing of the section is convenient, and the cost is low. The utility model discloses an aluminium alloy box cooperation combined material upper cover, specific strength is high, and manufacturing process is simple and convenient, has practiced thrift the material promptly and has reached the purpose that box weight loss was again.

The section bars on the lower box body 8 are not limited to 5 sections, and the optimal design can be adopted according to actual requirements. The first section bar 1 is a box body side beam and is provided with a flat sealing surface, a rivet nut of the sealing surface is matched and fastened with an upper box cover, a wider flanging is arranged on the side surface of the first section bar 1 along the side beam, the flanging is a whole vehicle mounting bracket and is provided with a whole vehicle positioning pin and a whole vehicle fixing hole, and a battery pack hoisting hole is further flanged; the second section bar 2 is a cross beam in the box body and is provided with a plurality of steps, the battery module 10 is arranged on the surface of each step, the steps are not limited to the section of the section bar and can be obtained by machining, and the outer contour of the section of the second section bar 2 is generally in an inverted T shape; the third section bar 3 is a cross beam in the box body and is provided with a plurality of steps, the step surfaces are used for installing the battery modules 10, the steps are not limited to the section of the section bar and can be obtained by machining, and meanwhile, the third section bar 3 is provided with step surfaces for supporting the two layers of module supports; the fourth section 4 is a box body rear edge beam and is provided with a horizontal sealing surface, a rivet nut 12 of the sealing surface is matched and fastened with the upper box cover 7, and the fourth section 4 is provided with a step higher than the sealing surface and can support a two-layer module support; the fifth section bar 5 is a box body front edge beam and is provided with a horizontal sealing surface, a rivet nut on the sealing surface is matched and fastened with the upper box cover, the fifth section bar 5 is provided with a plurality of steps, the battery module 10 is installed on the step surface, and the steps are not limited to the section of the section bar and can be obtained by machining.

The bottom plate 9 is a whole solid bottom plate, supports the inner beam and the sealing box body, is not limited to a solid plate, and can be formed by welding a plurality of same-section bar flat plates. The first section bar 1, the second section bar 2, the third section bar 3, the fourth section bar 4, the fifth section bar 5 and the bottom flat plate (bottom plate 9) can be machined according to different degrees to meet corner matching and accessory installation. The first section bar 1, the fourth section bar 4 and the fifth section bar 5 are fully welded with the outer side of a bottom flat plate (bottom plate 9) to meet the sealing requirement of a box body; the upper box cover 7 is provided with a flanging which is matched with the sealing surfaces of the first section bar 1, the fourth section bar 4 and the fifth section bar 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lightweight aluminium box structure, includes case lid (7) and lower box (8), its characterized in that: the upper box cover (7) is fixedly arranged on the upper part of the lower box body (8) through bolts, and a battery module (10) and accessories thereof are arranged between the upper box cover (7) and the lower box body (8);

lower box (8) are including bottom plate (9), the upper portion surface welding of bottom plate (9) has the frame section bar, the frame section bar is including first section bar (1), fourth section bar (4) and fifth section bar (5), the inboard fixed welding of frame section bar has second section bar (2) and third section bar (3), the outside of first section bar (1) is provided with sealed plane (11), surface mounting has rivet nut (12) on sealed plane (11).

2. The lightweight aluminum box structure of claim 1, wherein: and a sealing gasket is arranged at the fixed assembly position between the upper box cover (7) and the lower box body (8).

3. The lightweight aluminum box structure of claim 1, wherein: the battery module (10) is provided with one layer, two layers or three layers.

4. The lightweight aluminum box structure of claim 1, wherein: the welding surfaces of the first profile (1), the fourth profile (4) and the fifth profile (5) of the frame profile and the bottom plate (9) are fixed in a sealing mode through full welding.

5. The lightweight aluminum box structure of claim 1, wherein: the first section bar (1), the second section bar (2), the third section bar (3), the fourth section bar (4) and the fifth section bar (5) are all set to be light aluminum alloy section bars.

6. The lightweight aluminum box structure of claim 1, wherein: the upper box cover (7) is a glass fiber cover body made of composite materials, flanges are arranged on two sides of the upper box cover (7), and the flanges on two sides of the upper box cover (7) are fixedly arranged on the rivet nuts (12) of the lower first sectional material (1) through bolts.

7. The lightweight aluminum box structure of claim 1, wherein: the positioning device is characterized in that a positioning pin (13) is fixedly connected to a sealing plane (11) of the lower box body (8), and a positioning hole corresponding to the positioning pin (13) is formed in a flanging of the upper box cover (7).

8. The lightweight aluminum box structure of claim 1, wherein: the second section bar (2) and the third section bar (3) which are used as the reinforcing beams are provided with step surfaces for installing the battery module (10).