CN110571385A - A shape-reinforced lightweight sheet metal box structure - Google Patents

Abstract

the invention discloses a clip-shaped reinforced lightweight sheet metal box body structure, which comprises a bottom box, wherein the bottom box comprises a bottom plate and side plates, the bottom plate comprises a first flat plate and a first concave rib, the lower side of the bottom plate is fixedly connected with a convex rib, the convex rib and the first concave rib are of an integrated structure, the upper side of the bottom plate is fixedly welded with a reinforcing rib, the reinforcing rib comprises a second flat plate and a second concave rib, the first concave rib and the second concave rib form a square-shaped cavity with a square-shaped cross section, the side plates comprise a first side plate and a second side plate, the upper side of the first side plate is fixedly connected with a first bending part, the upper side of the second side plate is fixedly connected with a second bending part, the battery metal plate box body is characterized in that the second side plate is provided with two groups, the convex ribs are arranged on the lower side of the bottom box, external reinforcing ribs are replaced, the weight of the battery metal plate box body is reduced, a square-shaped cavity is formed between the two groups of concave ribs, and the battery metal plate box body has a certain damping and buffering function on batteries on the box body.

Description

A shape-reinforced lightweight sheet metal box structure

technical field

The invention relates to the field of auto parts, in particular to a back-shaped reinforced lightweight sheet metal box structure.

Background technique

Nowadays, new energy vehicles, mainly electric vehicles, are developing rapidly, and people have higher and higher requirements for the driving range of electric vehicles. As the core energy supply component of electric vehicles, the battery pack has a great impact on the driving range of electric vehicles with the increase of its installed capacity and energy density. Therefore, it is particularly important to reduce the weight of the battery pack as much as possible. Most of the weight is not conducive to the lightweight improvement of battery packs, but due to the advantages of high strength, relatively low cost and short manufacturing cycle of sheet metal boxes, most battery packs still use sheet metal boxes. At present, the sheet metal box structure basically consists of a bottom box, inner and outer ribs. The bottom box is the skin of the battery box, which is used for the sealed packaging of the battery box. The inner rib is located inside the bottom box and is used to fix the internal battery module and box reinforcement. The outer rib is generally integrated with the vehicle mounting bracket. It is strengthened in the lifting of the bottom box. Based on the above, it is necessary to further simplify the existing sheet metal box structure and carry out lightweight design to meet the current development needs of new energy vehicles.

Some traditional battery sheet metal boxes are heavy, which is not conducive to the lightweight of battery packs, affects the cruising range of electric vehicles to a certain extent, and is not conducive to the promotion of new energy vehicles; some traditional battery sheet metal boxes cannot achieve The shock absorption of the battery and its components increases the probability of battery damage to a certain extent, which is not conducive to improving the service life of new energy vehicle batteries.

Contents of the invention

The object of the present invention is to provide a back-shaped reinforced lightweight sheet metal box structure, in which convex ribs are arranged on the lower side of the bottom box to replace the outer reinforcing ribs, thereby reducing the weight of the battery sheet metal box, and between the two groups of concave ribs A circular cavity is formed, which has a certain shock-absorbing and buffering function for the battery on the box, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a back-shaped reinforced lightweight sheet metal box structure, including a bottom box, the bottom box includes a bottom plate and side plates, and the bottom plate includes a first flat plate and a first concave Ribs, the underside of the bottom plate is fixedly connected with convex ribs, the convex ribs and the first concave ribs are integrated structure, the upper side of the bottom plate is fixedly welded with reinforcing ribs, and the reinforcing ribs include a second flat plate and a second concave rib The ribs, the first concave rib and the second concave rib form a zigzag cavity with a zigzag cross section.

Preferably, the side plate includes a first side plate and a second side plate, and a first bent portion is fixedly connected to the upper side of the first side plate.

Preferably, a second bent portion is fixedly connected to the upper side of the second side plate.

Preferably, two groups are provided on the second side plate, a fixing block is fixedly connected to the outer side of the second side plate, and positioning holes are opened on the fixing block.

Preferably, the first concave ribs are distributed in a rectangular array on the bottom plate.

Preferably, the surface of the bottom box and the reinforcement is covered with an anti-rust paint layer.

Compared with prior art, the beneficial effect of the present invention is:

1. The convex ribs are set on the lower side of the bottom plate, which can replace the traditional external ribs and strengthen the lower side of the bottom box. On the basis of not reducing the strength of the bottom box, the overall weight is reduced. At the same time, the external ribs are eliminated to reduce the amount of box processing. Reduce the difficulty of the process, thereby reducing the production cost.

2. The first concave rib is set on the inner side of the bottom box, and the second concave rib is set on the reinforcing rib. The first concave rib and the second concave rib form a back-shaped cavity, which increases the vibration mode of the box and is conducive to improving the battery pack. Anti-vibration performance.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the partial structure of the circular cavity of the present invention;

Fig. 3 is a schematic bottom view of the structure of the present invention.

In the figure: 1. bottom box; 2. bottom plate; 3. side plate; 4. first flat plate; 5. first concave rib; 6. convex rib; 7. rib; 8. second flat plate; 9. second Concave rib; 10, back-shaped cavity; 11, first side plate; 12, second side plate; 13, first bending portion; 14, second bending portion; 15, fixing block; 16, positioning hole.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-3, the present invention provides a technical solution: a back-shaped reinforced lightweight sheet metal box structure, including a bottom box 1, in order to prevent the bottom box 1 from rusting and increase its service life, the bottom box 1 The surface is covered with an anti-rust paint layer. The bottom box 1 is a thin-walled steel plate with a thickness of 1.0-1.5mm.

The bottom box 1 includes a bottom plate 2 and a side plate 3 , the side plate 3 includes a first side plate 11 and a second side plate 12 , and a first bent portion 13 is fixedly connected to the upper side of the first side plate 11 . A second bent portion 14 is fixedly connected to the upper side of the second side plate 12 . In order to facilitate the fixing of the bottom box 1 , two groups of second side plates 12 are provided, and a fixing block 15 is fixedly connected to the outer side of the second side plate 12 , and a positioning hole 16 is opened on the fixing block 15 . The bottom plate 2 includes a first flat plate 4 and a first concave rib 5 .

The lower side of the bottom plate 2 is fixedly connected with a convex rib 6, and the convex rib 6 and the first concave rib 5 are of an integrated structure. For the outside of the bottom box 1, the first concave rib 5 facing downward inside is the external convex rib 6, and the structural strength meets According to the requirements of use, the external reinforcing ribs can be canceled, so as to further simplify the structure of the box body and reduce the weight of the box body. In order to increase the strengthening and damping effect, multiple sets of first concave ribs 5 and convex ribs 6 need to be provided, and the first concave ribs 5 and convex ribs 6 are distributed in a rectangular array on the bottom plate 2 . The first concave rib 5 and the convex rib 6 are formed by stamping or bending to form a partially reinforced structure in the shape of a "Tian".

The upper side of the base plate 2 is fixedly welded with a reinforcing rib 7, and for preventing the reinforcing rib 7 from rusting and increasing its service life, the surface of the reinforcing rib 7 is covered with an antirust paint layer. The reinforcing rib 7 includes a second flat plate 8 and a second concave rib 9 , and the first concave rib 5 and the second concave rib 9 form a zigzag cavity 10 with a zigzag cross section. The reinforcing rib 7 is a thin-walled steel plate with a thickness of 0.8-1.2mm. The reinforcing rib 7 is formed by stamping or bending, and the cross section is in the shape of "Ji". The battery module and electrical components are fixed on the reinforcing rib 7 .

Working principle: The convex rib 6 is located on the lower side of the bottom plate 2, which can replace the traditional external reinforcing ribs, increase the strength of the lower side of the bottom box 1, and reduce the overall weight of the battery sheet metal box without reducing the strength of the bottom box 1. The cavity 10 is composed of the first concave rib 5 and the second concave rib 9, which is beneficial to improve the anti-vibration performance of the battery pack. The rib 7 is used to fix the battery module and electrical components, and can better withstand gravity.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a shape reinforcing lightweight panel beating box structure returns, includes under casing (1), its characterized in that: bottom case (1) includes bottom plate (2) and curb plate (3), bottom plate (2) are including first flat board (4) and first concave rib (5), bottom plate (2) downside fixedly connected with fin (6), fin (6) and first concave rib (5) formula structure as an organic whole, bottom plate (2) upside fixed weld has strengthening rib (7), strengthening rib (7) are including dull and stereotyped (8) of second and second concave rib (9), first concave rib (5) and second concave rib (9) form shape cavity (10) back of cross-section for returning the font.

2. The light-weight metal plate box structure with the reinforcing structure in the shape of a Chinese character 'hui' as claimed in claim 1, wherein: the side plate (3) comprises a first side plate (11) and a second side plate (12), and a first bending portion (13) is fixedly connected to the upper side of the first side plate (11).

3. The light-weight metal plate box structure with the reinforcing square-wave shape as claimed in claim 2, wherein: a second bending part (14) is fixedly connected to the upper side of the second side plate (12).

4. The clip-shaped reinforced lightweight sheet metal box structure according to claim 3, characterized in that: the two groups of second side plates (12) are arranged, fixing blocks (15) are fixedly connected to the outer sides of the second side plates (12), and positioning holes (16) are formed in the fixing blocks (15).

5. The light-weight metal plate box structure with the reinforcing structure in the shape of a Chinese character 'hui' as claimed in claim 1, wherein: the first concave ribs (5) are distributed on the bottom plate (2) in a rectangular array.

6. The light-weight metal plate box structure with the reinforcing structure in the shape of a Chinese character 'hui' as claimed in claim 1, wherein: and the surfaces of the bottom box (1) and the reinforcing ribs (7) are covered with antirust paint layers.