CN-224232822-U - Box and battery

Abstract

The utility model provides a box body which comprises a bottom plate and a side plate, wherein the bottom plate and the side plate are integrally formed by stamping, a connecting part is stamped between the bottom plate and the side plate, a protective coating is arranged on the outer surface of the bottom plate, and the protective coating extends from the bottom plate to a part of the area of the side plate. Compared with the prior art, the box body disclosed by the utility model has the advantages that the protective coating extends from the outer surface of the bottom plate to the partial area of the side plate, so that the strength of the thinned area, namely the connecting part of the box body, is greatly improved, the phenomenon that the thinned area deforms or even breaks is avoided, the integral strength of the box body is further improved, and the protective coating only extends to the partial area of the side plate, so that the integral strength of the box body is improved, and meanwhile, the heat dissipation performance of the box body is not influenced.

Inventors

• JIANG HAO
• YANG XULONG
• YIN DI

Assignees

• 中创新航科技集团股份有限公司

Dates

Publication Date

20260512

Application Date

20250528

Claims (10)

1. 1. The box body is characterized by comprising a bottom plate and a side plate, wherein the bottom plate and the side plate are integrally formed by stamping; The connecting part is stamped between the bottom plate and the side plate, the outer surface of the bottom plate is provided with a protective coating, and the protective coating extends from the bottom plate to a partial area of the side plate.
2. 2. The case of claim 1, wherein the protective coating has a height of 15% -80% of the height of the side panels.
3. 3. The box according to claim 1, wherein the thickness of the protective coating on the bottom plate is 0.5 mm-2.5 mm; And/or the thickness of the protective coating on the side plate is 0.8 mm-2.5 mm.
4. 4. The case according to claim 1, wherein the side plates are plural, and the connecting portion includes a first connecting portion and a second connecting portion; The first connecting part is connected to a corner area between the bottom plate and one side plate, and the second connecting part is connected to a corner area between the bottom plate and two adjacent side plates; the thickness of the protective coating at the second connecting part is larger than that of the first connecting part.
5. 5. The case according to claim 4, wherein the thickness of the protective coating at the first connection portion is 1.0 mm-2.5 mm; The thickness of the protective coating at the second connecting part is 1.2 mm-2.5 mm.
6. 6. The case according to claim 1, wherein the outer surface of the base plate is further provided with a reinforcing rib, and the outer surface of the reinforcing rib is further provided with the protective coating.
7. 7. The case of claim 1, further comprising a lifting beam disposed at a location of the side panel proximate the bottom panel, an outer surface of the lifting beam further being provided with the protective coating.
8. 8. The box according to claim 1, wherein an intermediate beam is further disposed in the box, and the thickness of the protective coating disposed on the base plate region corresponding to the intermediate beam is smaller than the thickness of the protective coating disposed on other regions of the base plate.
9. 9. The cabinet of claim 1, wherein the protective coating is a PVC coating, a polyurea coating, a polyurethane coating, or a fluorocarbon coating.
10. 10. A battery comprising a battery pack, and a case according to any one of claims 1 to 9, the battery pack being disposed in the case.

Description

Box and battery Technical Field The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a box body and a battery. Background Under the background of rapid development of new energy automobile industry, the battery box body is used as a key structural component for protecting a power battery system, the performance of the battery box body plays a crucial role in the safety and stability of the battery and the running reliability of the whole automobile, and the stamping box body has been widely applied by virtue of the remarkable advantages of high production efficiency, good dimensional accuracy, strong designability and the like. However, the existing stamping box body still has a certain limitation in technology, on one hand, in the stamping forming process, due to the plastic deformation characteristic of materials, partial areas of the box body, especially the areas where the bottom surface and the side surfaces of the box body are connected, inevitably have the phenomenon of thinning the materials, the strength of the thinned areas is obviously lower than that of other positions of the box body, when the box body is impacted by external force, the thinned areas are easier to deform or even crack, and the protective performance of the box body is seriously affected, on the other hand, in order to meet the requirement of the stamping box body on the formability of the materials, the strength of the materials adopted by the existing stamping box body is lower, so that the integral strength of the box body is insufficient, especially the areas where the bottom surface and the side surfaces of the box body are connected, the strength of the box body is weaker due to the thinning, and the limitation of the strength of the materials further aggravates the strength defect of the areas, and the increasingly strict safety standard and performance requirement of the battery box body are difficult to meet. Disclosure of utility model Accordingly, the present utility model is directed to a case, which can effectively improve the strength of the thinned region of the case, thereby improving the overall strength of the case. It is still another object of the present utility model to provide a battery. In order to achieve the above purpose, the present utility model provides the following technical solutions: The box body comprises a bottom plate and a side plate, wherein the bottom plate and the side plate are integrally formed by stamping; The connecting part is stamped between the bottom plate and the side plate, the outer surface of the bottom plate is provided with a protective coating, and the protective coating extends from the bottom plate to a partial area of the side plate. Compared with the prior art, the case disclosed by the embodiment of the utility model has the advantages that the strength of the thinned area of the connecting part of the case is greatly improved due to the fact that the protective coating extends from the outer surface of the bottom plate to the partial area of the side plate, the deformation and even cracking of the thinned area are avoided, the overall strength of the case is further improved, and the heat dissipation performance of the case is not influenced while the overall strength of the case is improved due to the fact that the protective coating only extends to the partial area of the side plate. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic view of the bottom structure of a case according to an embodiment of the present utility model; Fig. 2 is a schematic diagram of an internal structure of a case according to an embodiment of the present utility model. Reference numerals illustrate: 100-a bottom plate, wherein the bottom plate is provided with a plurality of grooves, 200-A side plate, 300-The first connection portion is provided with a first connecting portion, 400-A second connecting portion, which is provided with a second connecting portion, 500-A protective coating layer of the coating, 600-A reinforcing rib, wherein the reinforcing rib is provided with a plurality of reinforcing ribs, 700-A beam is hoisted and fixed, 800-Middle beam. Detailed Description Accordingly, the present utility model is directed to a case, which can effectively improve the strength of the thinned region of the case, thereby improving the overall strength of the case. It is still another object of the present utility model to provide a battery. The fol