Automobile battery box fireproof upper cover

Abstract

The application belongs to the technical field of new energy vehicles, and relates to an automobile battery box fireproof upper cover, which comprises an upper cover plate and a lower cover plate. The opposite surfaces of the upper cover plate and the lower cover plate are planes. The opposite surfaces of the upper cover plate and the lower cover plate are provided with reinforcing ribs. The reinforcing ribs are configured to divide the cavity between the upper cover plate and the lower cover plate into at least two accommodation cavities. The accommodation cavities are provided with fireproof fillers. The upper cover plate and the lower cover plate are carbon fiber composite material plates. The edge of the lower cover plate is provided with a turned-up edge extending towards the upper cover plate. The edge of the turned-up edge is provided with a connecting edge parallel to the upper cover plate. The connecting edge is connected to the upper cover plate. In the application, the upper cover of the battery box is made of carbon fiber composite material, which has the characteristics of light weight and high strength. Meanwhile, the interior of the upper cover is filled with fireproof fillers, which can effectively improve the fireproof performance of the upper cover of the battery box. The outer surfaces of the upper cover plate and the lower cover plate are planes, which is beneficial to the butt joint of the surface of the upper cover of the battery box and other structures.

Description

Technical Field

[0001] This application belongs to the field of new energy vehicle technology, and in particular relates to a fireproof cover for an automotive battery box. Background Technology

[0002] As new energy vehicles become increasingly popular, their safety issues are also becoming more prominent. Among these, the safety of the battery is the most concerning. The battery box, which houses and secures the battery pack, plays a crucial role in battery safety, especially fire resistance. Therefore, the battery box must not only possess high strength but also excellent fire resistance. Utility Model Content

[0003] To address the technical problems with the fire resistance of existing battery boxes, this application provides a fireproof cover for an automotive battery box.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a fireproof cover for an automotive battery box, comprising an upper cover plate and a lower cover plate, wherein the surfaces of the upper cover plate and the lower cover plate are planar, and reinforcing ribs are provided on the opposing surfaces of the upper cover plate and the lower cover plate. The reinforcing ribs are configured to divide the cavity between the upper cover plate and the lower cover plate into at least two receiving cavities, wherein fireproof filler is provided in the receiving cavities. Both the upper cover plate and the lower cover plate are made of carbon fiber composite material. The edge of the lower cover plate is provided with a flange extending toward the upper cover plate, and the flange edge is provided with a connecting edge parallel to the upper cover plate, wherein the connecting edge is connected to the upper cover plate.

[0005] In some embodiments, the reinforcing ribs include upper reinforcing ribs disposed on the upper cover plate and lower reinforcing ribs disposed on the lower cover plate.

[0006] In some embodiments, the upper reinforcing rib includes a first transverse reinforcing rib disposed along the width direction of the upper cover plate and a first longitudinal reinforcing rib disposed along the length direction of the upper cover plate; the lower reinforcing rib includes a second transverse reinforcing rib disposed along the width direction of the lower cover plate and a second longitudinal reinforcing rib disposed along the length direction of the lower cover plate.

[0007] In some embodiments, the upper reinforcing rib and the lower reinforcing rib are positioned opposite each other and abut against each other.

[0008] In some embodiments, the upper reinforcing rib and the lower reinforcing rib are staggered, with the upper reinforcing rib abutting against the lower cover plate and the lower reinforcing rib abutting against the upper cover plate.

[0009] In some embodiments, the accommodating cavities are interconnected.

[0010] In some embodiments, the flange is tilted.

[0011] In some embodiments, the fire-retardant filler is a silica filler.

[0012] In some embodiments, the edge of the upper cover is provided with a connecting hole, and a metal threaded sleeve is embedded in the connecting hole, the metal threaded sleeve passing through the upper cover plate and the lower cover plate.

[0013] In some embodiments, the metal threaded sleeve has internal threads and external threads.

[0014] Beneficial Effects: The battery box cover in this application is made of carbon fiber composite material, which is lightweight and high-strength. Furthermore, filling it with fire-retardant filler effectively improves the fire resistance of the battery box cover. Making the outer surfaces of the upper and lower cover plates, which are adjacent to each other, flat facilitates the connection between the battery box cover surface and other structures. In addition, reinforcing ribs are provided on the opposing surfaces of the upper and lower cover plates, which not only improves their strength but also forms a cavity for accommodating the fire-retardant filler. The design of the flange and connecting edge on the lower cover plate not only encloses the cavity between the upper and lower cover plates but also allows the flange to serve as a guiding mechanism for the assembly of the battery box cover and lower casing, improving assembly efficiency and accuracy. Attached Figure Description

[0015] Figure 1 A schematic diagram of the three-dimensional structure of the fireproof top cover of the battery box;

[0016] Figure 2 This is a schematic diagram of the upper cover plate structure;

[0017] Figure 3 This is a schematic diagram of the lower cover plate structure;

[0018] Figure 4 A cross-sectional view of a fireproof battery box cover according to one embodiment;

[0019] Figure 5 This is a cross-sectional view of a fireproof top cover for a battery box according to another embodiment.

[0020] In the figure: 1. Upper cover plate, 10. Accommodating cavity, 11. First transverse reinforcing rib, 12. First longitudinal reinforcing rib, 2. Lower cover plate, 21. Flanged edge, 22. Connecting edge, 23. Second transverse reinforcing rib, 24. Second longitudinal reinforcing rib, 3. Connecting hole. Detailed Implementation

[0021] The present application will be further described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making creative changes are within the protection scope of the present application.

[0022] like Figures 1-5 As shown, the fireproof cover for an automotive battery box provided in this application includes an upper cover plate 1 and a lower cover plate 2. The opposing surfaces of the upper cover plate 1 and the lower cover plate 2 are flat to avoid unevenness and facilitate connection between the lower cover plate 2 and other components. Reinforcing ribs are provided on the opposing surfaces of the upper cover plate 1 and the lower cover plate 2. The upper cover plate 1 and its reinforcing ribs are an integral structure, and the lower cover plate 2 and its reinforcing ribs are also an integral structure. The reinforcing ribs support the upper cover plate 1 and the lower cover plate 2, dividing the cavity between the upper cover plate 1 and the lower cover plate 2 into at least two receiving cavities 10. Fireproof filler is provided in each receiving cavity 10 to improve temperature resistance and fireproof effect. The reinforcing ribs serve as reinforcement structures for the upper cover plate 1 and the lower cover plate 2, and also as partition structures for the cavities. Both the upper cover plate 1 and the lower cover plate 2 are made of carbon fiber composite material, which has the advantages of being lightweight and having high strength. The lower cover plate 2 has a flange 21 extending toward the upper cover plate 1. The flange 21 has a connecting edge 22 parallel to the upper cover plate 1, and the connecting edge 22 is connected to the upper cover plate 1. The flange 21 can compensate for the height of the reinforcing rib, make the connecting edge 22 flush with the upper cover plate 1, and form a cavity between the upper cover plate 1 and the lower cover plate 2.

[0023] like Figures 2-5 As shown, in order to improve the strength of the upper cover plate 1 and the lower cover plate 2, in some embodiments, the reinforcing ribs include upper reinforcing ribs disposed on the upper cover plate 1 and lower reinforcing ribs disposed on the lower cover plate 2.

[0024] Specifically, such as Figure 2 and 3 As shown, in some embodiments, the upper reinforcing rib includes a first transverse reinforcing rib 11 arranged along the width direction of the upper cover plate 1 and a first longitudinal reinforcing rib 12 arranged along the length direction of the upper cover plate 1; the lower reinforcing rib includes a second transverse reinforcing rib 23 arranged along the width direction of the lower cover plate 2 and a second longitudinal reinforcing rib 24 arranged along the length direction of the lower cover plate 2. Providing reinforcing ribs in both the length and width directions of the upper cover plate 1 and the lower cover plate 2 is beneficial for further improving the strength of the upper cover plate 1 and the cover plate.

[0025] Specifically, such as Figure 4As shown, in some embodiments, the upper reinforcing rib and the lower reinforcing rib are positioned opposite each other and abut against each other. The abutment between the upper and lower reinforcing ribs increases their reinforcing effect and improves the rigidity of the battery box cover.

[0026] like Figure 5 As shown, in some other embodiments, the upper reinforcing rib and the lower reinforcing rib are staggered, with the upper reinforcing rib abutting against the lower cover plate 2 and the lower reinforcing rib abutting against the upper cover plate 1. This allows the upper reinforcing rib to provide support and reinforcement for the lower cover plate 2, and the lower reinforcing rib to provide support and reinforcement for the upper cover plate 1. In other words, the upper cover plate 1 and the lower cover plate 2 can be doubly reinforced, improving the overall strength of the battery box cover.

[0027] To prevent localized thermal expansion of the top cover, in some embodiments, the accommodating cavities 10 are interconnected. Setting the accommodating cavities 10 in a connected state allows expanding gas to diffuse to other accommodating cavities 10 when the top cover is locally heated, effectively reducing the possibility of localized expansion and improving the reliability of the battery box top cover. Figure 2 and 3 As shown, specifically, in some embodiments, the first transverse reinforcing rib 11, the first longitudinal reinforcing rib 12, the second transverse reinforcing rib 23 and the second longitudinal reinforcing rib 24 located on the same straight line are set as discontinuous and intermittent reinforcing ribs, and the intermittent part can form a connecting channel between adjacent accommodating cavities 10.

[0028] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, when assembling the battery box top cover to the battery box bottom cover, the top cover and the battery box bottom cover need to be precisely aligned. In some embodiments, the flange 21 is inclined. During assembly, the inclined flange 21 can act as a guide, facilitating assembly. Furthermore, with inclined flanges 21 on all four sides, the upper battery box top cover can be centered on the lower battery box under the guiding effect of the flanges 21, which helps improve assembly accuracy.

[0029] Specifically, in some embodiments, the fire-retardant filler is silica filler, which has good high-temperature resistance and fire resistance, and can improve the fire resistance of the battery box cover. Specifically, ultrafine silica filler (such as Evonik Aerosil 200 fumed silica) or silica aerogel can be selected.

[0030] To facilitate the assembly and connection of the battery box upper cover and lower battery box, in some embodiments, the edge of the upper cover is provided with a connecting hole 3, and a metal threaded sleeve is embedded in the connecting hole 3, the metal threaded sleeve passing through the upper cover plate 1 and the lower cover plate 2. During assembly, the upper cover and lower battery box are connected by bolts and metal threaded sleeves, which can avoid damage caused by the bolts directly acting on the carbon fiber composite material and improve the stability of the connection structure.

[0031] As a further optimization of the above solution, in some embodiments, the metal threaded insert has internal and external threads. The internal thread of the metal threaded insert serves as the connection part for bolt connection, and the external thread serves as the connection part for carbon fiber composite material upper cover, which can improve the bonding force between the metal threaded insert and the upper cover and improve the connection firmness.

[0032] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this application.

Claims

1. An automobile battery case fireproof upper cover characterized by comprising: The device includes an upper cover plate (1) and a lower cover plate (2). The surfaces of the upper cover plate (1) and the lower cover plate (2) are flat. Reinforcing ribs are provided on the opposing surfaces of the upper cover plate (1) and the lower cover plate (2). The reinforcing ribs are configured to divide the cavity between the upper cover plate (1) and the lower cover plate (2) into at least two receiving cavities (10). Fireproof filler is provided in the receiving cavity (10). The upper cover plate (1) and the lower cover plate (2) are both carbon fiber composite material plates. The lower cover plate (2) has a flange (21) extending toward the upper cover plate (1) on its edge. The flange (21) has a connecting edge (22) parallel to the upper cover plate (1) on its edge. The connecting edge (22) is connected to the upper cover plate (1).

2. The fireproof cover for an automotive battery box according to claim 1, characterized in that, The reinforcing ribs include upper reinforcing ribs disposed on the upper cover plate (1) and lower reinforcing ribs disposed on the lower cover plate (2).

3. The fireproof cover for the automotive battery box according to claim 2, characterized in that, The upper reinforcing rib includes a first transverse reinforcing rib (11) arranged along the width direction of the upper cover plate (1) and a first longitudinal reinforcing rib (12) arranged along the length direction of the upper cover plate (1); the lower reinforcing rib includes a second transverse reinforcing rib (23) arranged along the width direction of the lower cover plate (2) and a second longitudinal reinforcing rib (24) arranged along the length direction of the lower cover plate (2).

4. The fireproof cover for an automotive battery box according to claim 2 or 3, characterized in that, The upper reinforcing rib and the lower reinforcing rib are positioned correspondingly, and the upper reinforcing rib and the lower reinforcing rib abut against each other.

5. The fireproof cover for an automotive battery box according to claim 2 or 3, characterized in that, The upper reinforcing rib and the lower reinforcing rib are staggered, with the upper reinforcing rib abutting against the lower cover plate (2) and the lower reinforcing rib abutting against the upper cover plate (1).

6. The fireproof cover for an automotive battery box according to any one of claims 1 to 3, characterized in that, The accommodating cavities (10) are interconnected.

7. The fireproof cover for an automotive battery box according to claim 1, characterized in that, The flange (21) is set at an angle.

8. The fireproof cover for an automotive battery box according to claim 1, characterized in that, The fire-retardant filler is a silica filler.

9. The fireproof cover for an automotive battery box according to claim 1, characterized in that, The upper cover edge is provided with a connecting hole (3), and a metal threaded sleeve is embedded in the connecting hole (3). The metal threaded sleeve passes through the upper cover plate (1) and the lower cover plate (2).

10. The fireproof cover for an automotive battery box according to claim 9, characterized in that, The metal threaded sleeve has internal and external threads.

Images