Box body and battery

Abstract

The utility model provides a box body which comprises a bottom plate and a side plate, and the bottom plate and the side plate are integrally formed in a punching mode. 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 partial 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 of the connecting part of the box body is greatly improved, the phenomenon that the thinned area deforms and even is broken is avoided, the overall strength of the box body is further improved, and the service life of the box body is prolonged. And the protective coatings only extend to partial areas of the side plates, so that the overall strength of the box body is improved, and meanwhile, the heat dissipation performance of the box body is not influenced.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing technology, and specifically relates to a housing and a battery. Background Technology

[0002] Against the backdrop of the rapid development of the new energy vehicle industry, the battery housing, as a key structural component for protecting the power battery system, plays a crucial role in the safety, stability, and reliability of the vehicle operation. Stamped housings have been widely used due to their significant advantages such as high production efficiency, good dimensional accuracy, and strong design flexibility.

[0003] However, existing stamped battery cases still have certain technical limitations. On the one hand, during the stamping process, due to the plastic deformation characteristics of the material, material thinning inevitably occurs in some areas of the case, especially in the area where the bottom and sides of the case meet. This results in the thinned area having significantly lower strength than other parts of the case. When the case is subjected to external impact, this thinned area is more prone to deformation or even cracking, seriously affecting the protective performance of the case. On the other hand, to meet the requirements of material formability for stamped battery cases, the materials currently used in stamped battery cases have relatively low strength, resulting in insufficient overall strength of the case. In particular, the area where the bottom and sides of the case meet is already weak due to thinning, and the limitations of material strength further exacerbate the strength defects in this area, making it difficult to meet the increasingly stringent safety standards and performance requirements for battery cases. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a box that can effectively improve the strength of the thinned area of ​​the box, thereby improving the overall strength of the box.

[0005] Another objective of this invention is to provide a battery.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A box body includes a bottom plate and a side plate, wherein the bottom plate and the side plate are integrally stamped;

[0008] A connecting portion is stamped between the base plate and the side plate, and a protective coating is provided on the outer surface of the base plate, extending from the base plate to a portion of the side plate.

[0009] As can be seen from the above technical solutions, compared with the prior art, the enclosure disclosed in this utility model embodiment has a protective coating that extends from the outer surface of the bottom plate to a portion of the side plate. This greatly enhances the strength of the thinned area at the connection part of the enclosure, preventing deformation or even cracking of the thinned area, thereby improving the overall strength of the enclosure. Moreover, since the protective coating only extends to a portion of the side plate, it does not affect the heat dissipation performance of the enclosure while improving its overall strength. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the bottom structure of the box body disclosed in the embodiment of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the box disclosed in the embodiment of this utility model.

[0013] Explanation of reference numerals in the attached figures:

[0014] 100-base plate,

[0015] 200-side panel,

[0016] 300 - First connecting part,

[0017] 400 - Second connecting part,

[0018] 500 - Protective coating,

[0019] 600 - Reinforcing rib,

[0020] 700-Lifting Beam

[0021] 800 - Intermediate beam. Detailed Implementation

[0022] In view of this, the purpose of this utility model is to provide a box that can effectively improve the strength of the thinned area of ​​the box, thereby improving the overall strength of the box.

[0023] Another objective of this invention is to provide a battery.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Please refer to... Figure 1 and Figure 2 .

[0025] The box disclosed in this embodiment of the utility model includes a bottom plate 100 and a side plate 200, which are integrally stamped. A connecting part is stamped between the bottom plate 100 and the side plate 200. A protective coating 500 is provided on the outer surface of the bottom plate 100, and the protective coating 500 extends from the bottom plate 100 to a part of the side plate 200.

[0026] Compared with the prior art, the enclosure disclosed in this utility model has a protective coating 500 that extends from the outer surface of the bottom plate 100 to a portion of the side plate 200. This greatly enhances the strength of the thinned area at the connection of the enclosure, preventing deformation or even cracking in the thinned area and thus improving the overall strength of the enclosure. Moreover, since the protective coating 500 only extends to a portion of the side plate 200, it does not affect the heat dissipation performance of the enclosure while improving its overall strength.

[0027] It should be explained that the base plate 100 is used to support the battery, and the side plate 200 is used to form a receiving cavity with the base plate 100 to receive the battery. The side plate 200 can be sealed with the sealing cover to isolate the individual battery from the external environment.

[0028] As a further embodiment, the height of the protective coating 500 disclosed in this utility model embodiment is 15% to 80% of the height of the side plate 200. For example, the height of the protective coating 500 may be 20%, 40%, or 60% of the height of the side plate 200.

[0029] As a specific embodiment, the height of the protective coating 500 disclosed in this utility model embodiment is 30mm~10mm. For example, the height of the protective coating 500 can be 25mm, 20mm or 15mm.

[0030] Since the weights borne by the bottom plate 100 and the side plate 200 of the enclosure are different, the thickness of the protective coating 500 provided on the bottom plate 100 and the side plate 200 can be set according to actual needs.

[0031] As a specific embodiment, the thickness of the protective coating 500 on the base plate 100 disclosed in this utility model embodiment is 0.5 mm to 2.5 mm. For example, the thickness of the protective coating 500 on the base plate 100 can be 1 mm, 1.5 mm, or 2 mm.

[0032] As a specific embodiment, the protective coating 500 disclosed in this utility model embodiment has a thickness of 0.8 mm to 2.5 mm on the side plate 200. For example, the thickness of the protective coating 500 on the side plate 200 can be 1.3 mm, 1.8 mm, or 2.3 mm.

[0033] As a further embodiment, the side plate 200 disclosed in this utility model embodiment is multiple, and the connecting part includes a first connecting part 300 and a second connecting part 400.

[0034] The first connecting part 300 is a corner area connecting the base plate 100 and a side plate 200, and the second connecting part 400 is a rounded corner area connecting the base plate 100 and two adjacent side plates 200.

[0035] Since the rounded corner areas are weaker than the corner areas during the stamping process, to improve the overall strength of the housing, it is preferable that the thickness of the protective coating 500 at the second connecting portion 400 is greater than the thickness at the first connecting portion 300. This arrangement further enhances the thickness of the rounded corner areas of the housing, thereby further improving the overall strength of the housing.

[0036] As a specific embodiment, the box disclosed in this utility model embodiment has a rectangular structure, wherein there are four side plates 200, and the four side plates 200 and the bottom plate 100 are integrally stamped to form a rectangular accommodating cavity.

[0037] As a specific embodiment, the thickness of the protective coating 500 disclosed in this utility model embodiment is 1.0 mm to 2.5 mm at the first connecting portion 300. For example, the thickness of the protective coating 500 at the first connecting portion 300 can be 1.1 mm, 1.8 mm, or 2.3 mm.

[0038] As a specific embodiment, the thickness of the protective coating 500 disclosed in this utility model embodiment on the second connecting portion 400 is 1.2 mm to 2.5 mm. For example, the thickness of the protective coating 500 on the second connecting portion 400 can be 1.5 mm, 2 mm, or 2.3 mm.

[0039] As a further embodiment, the enclosure disclosed in this utility model embodiment is provided with reinforcing ribs 600 on the outer surface of the base plate 100, and a protective coating 500 is provided on the outer surface of the reinforcing ribs 600. This arrangement can further improve the strength of the enclosure.

[0040] To facilitate the hoisting of the enclosure, the enclosure disclosed in this embodiment of the utility model further includes a hoisting beam 700, which is disposed on the side plate 200 and close to the bottom plate 100. The outer surface of the hoisting beam 700 is also provided with a protective coating 500. This arrangement further enhances the strength of the hoisting beam 700, thereby preventing damage to the enclosure during hoisting.

[0041] The protective coating 500 can be applied to the entire outer surface of the hoisting beam 700, or it can be applied only to the lower surface of the hoisting beam 700.

[0042] It should be explained that the lower surface of the hoisting beam 700 refers to the surface on the side closest to the bottom plate 100 of the box body.

[0043] To prevent excessive localized stress from causing deformation or damage to the enclosure, the enclosure disclosed in this embodiment of the invention also includes a central beam 800. The protective coating 500 is less thick in the area of ​​the base plate 100 corresponding to the central beam 800 than in other areas of the base plate 100. This arrangement allows for a weaker protective coating 500 in areas of higher enclosure strength and a thicker protective coating 500 in areas of relatively lower enclosure strength, further improving the uniformity of the overall enclosure strength.

[0044] This utility model embodiment does not limit the specific type of protective coating 500. Any type that meets the usage requirements of this utility model is within the protection scope of this utility model.

[0045] Preferably, the protective coating 500 disclosed in this embodiment of the present invention is a PVC coating, a polyurea coating, a polyurethane coating, or a fluorocarbon coating. The film formed by the PVC coating, polyurea coating, polyurethane coating, or fluorocarbon coating not only has high hardness, but also good elasticity and strength, and can adapt to the bending and folding of materials without breaking.

[0046] This utility model embodiment also discloses a battery, including a battery pack and a housing as disclosed in any of the above embodiments, wherein the battery pack is disposed within the housing.

[0047] Since the battery uses the housing disclosed in the present utility model embodiment, the battery also has the technical advantages of the housing disclosed in the present utility model embodiment, and the present utility model embodiment will not elaborate on these advantages further.

[0048] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The above description of the disclosed embodiments enables those 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 general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not 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. A box, characterized in that, Includes a base plate and side plates, wherein the base plate and the side plates are integrally stamped; A connecting portion is stamped between the base plate and the side plate, and a protective coating is provided on the outer surface of the base plate, extending from the base plate to a portion of the side plate.

2. The housing according to claim 1, characterized in that, The height of the protective coating is 15% to 80% of the height of the side plate.

3. The housing according to claim 1, characterized in that, The protective coating on the base plate has a thickness of 0.5 mm to 2.5 mm; And / or, the protective coating has a thickness of 0.8 mm to 2.5 mm on the side plate.

4. The housing according to claim 1, characterized in that, The side plates are multiple, and the connecting part includes a first connecting part and a second connecting part; The first connecting part is a corner area connecting the base plate and one of the side plates, and the second connecting part is a rounded corner area connecting the base plate and two adjacent side plates; The thickness of the protective coating at the second connection portion is greater than the thickness at the first connection portion.

5. The housing according to claim 4, characterized in that, The thickness of the protective coating at the first connection portion is 1.0 mm to 2.5 mm; The thickness of the protective coating at the second connection is 1.2 mm to 2.5 mm.

6. The housing according to claim 1, characterized in that, The outer surface of the base plate is also provided with reinforcing ribs, and the outer surface of the reinforcing ribs is also provided with the protective coating.

7. The housing according to claim 1, characterized in that, It also includes a lifting beam, which is disposed on the side plate and close to the bottom plate, and the outer surface of the lifting beam is also provided with the protective coating.

8. The housing according to claim 1, characterized in that, The box body is also provided with a middle beam, and the thickness of the protective coating in the bottom plate area corresponding to the middle beam is less than the thickness of the protective coating in other areas of the bottom plate.

9. The housing according to claim 1, characterized in that, The protective coating is a PVC coating, a polyurea coating, a polyurethane coating, or a fluorocarbon coating.

10. A battery, characterized in that, It includes a battery pack and a housing as described in any one of claims 1-9, wherein the battery pack is disposed within the housing.

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