Middle type battery aluminum shell with anti-explosion valve

Abstract

The utility model discloses a middle type battery aluminum shell with an anti-explosion valve, which comprises a battery aluminum shell main body, and the battery aluminum shell main body is of a hollow cylindrical structure with an opening at the bottom end; the middle explosion-proof valve structure is arranged at the top end of the battery aluminum shell main body and comprises a circular center stamping groove and a strip-shaped side stamping groove which are machined in the top surface of the battery aluminum shell main body in a mechanical stamping manner; the temporary supporting structure is arranged at the bottom end of the battery aluminum shell main body; according to the utility model, an intermediate explosion-proof valve structure is ingeniously arranged at the top of the aluminum shell of the battery, so that the battery can respond immediately when the internal pressure of the battery rises abnormally, and a pressure relief channel is opened at the center of the top, so that rapid and directional pressure relief is realized, the pressure relief direction and the flame injection direction are effectively limited, and the risk of accident diffusion is reduced; in addition, a detachable temporary supporting cylinder is designed at the bottom of the battery aluminum shell according to the protection requirement of the battery aluminum shell in the transportation and storage period.

Description

Technical Field

[0001] This utility model belongs to the field of battery aluminum shell technology, specifically relating to an intermediate type battery aluminum shell with an explosion-proof valve. Background Technology

[0002] With the rapid development of the new energy industry, lithium-ion batteries, as the main energy storage device, have been widely used in electric vehicles, portable electronic devices and energy storage systems. Battery safety performance has always been a key focus of the industry.

[0003] Traditional battery aluminum casings are mostly hollow cylindrical structures with openings at the bottom, used to house battery cells and electrolyte components. While this design is simple, when the internal pressure of the battery rises abnormally, it often releases pressure through irregular ruptures at weak points in the casing. This not only fails to effectively control the direction of pressure release but may also cause electrolyte splashing and flame spread, exacerbating the consequences of accidents. Furthermore, during production and transportation, traditional battery aluminum casings lack effective support and protection at the bottom opening, making them susceptible to unnecessary deformation under external forces, affecting subsequent assembly accuracy and battery performance. Therefore, this utility model proposes a battery aluminum casing with an intermediate explosion-proof valve. Utility Model Content

[0004] The purpose of this invention is to provide an intermediate-type aluminum battery casing with an explosion-proof valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intermediate-type aluminum battery casing with an explosion-proof valve, comprising...

[0006] The battery has an aluminum casing body, which is a hollow cylindrical structure with an opening at the bottom.

[0007] The battery aluminum shell body has an intermediate explosion-proof valve structure at the top, including a circular central stamping groove and a strip-shaped side stamping groove processed on the top surface of the battery aluminum shell body by mechanical stamping, and the circular central stamping groove and the strip-shaped side stamping groove are connected. It also includes a circular central boss at the center of the top surface of the battery aluminum shell body, and the top surface of the battery aluminum shell body is also processed with annular engravings at the edge of the circular central boss.

[0008] And a temporary support structure set at the bottom of the battery's aluminum casing.

[0009] Preferably, the outer diameter of the battery aluminum casing body is 30-65mm.

[0010] Preferably, the width of the annular groove is 0.2-0.5 mm.

[0011] Preferably, the depth of the annular groove is 55% to 75% of the thickness of the top of the battery aluminum casing.

[0012] Preferably, the temporary support structure includes a bottom cover and an integral temporary support cylinder disposed on the top surface of the bottom cover, and the outer diameter of the temporary support cylinder is consistent with the inner diameter of the bottom end of the battery aluminum shell body.

[0013] Preferably, the outer side of the top end of the temporary support tube is provided with an arc-shaped chamfered surface.

[0014] Preferably, the surface of the temporary support cylinder is provided with an integral annular protrusion, and the bottom inner wall of the battery aluminum shell body is provided with an annular groove corresponding to the annular protrusion.

[0015] Preferably, the surface of the bottom cover is further provided with an annular outer groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model cleverly incorporates an intermediate explosion-proof valve structure at the top of the battery's aluminum casing, ensuring an immediate response when the internal pressure of the battery abnormally increases. It opens a pressure relief channel at the center of the top, achieving rapid and directional pressure relief, effectively limiting the direction of pressure relief and the direction of flame jet, and reducing the risk of accident spread.

[0018] 2. In addition, this utility model also addresses the protection needs of the battery aluminum shell during transportation and storage by designing a removable temporary support cylinder at its bottom. This support cylinder is not only simple in structure and easy to install and disassemble, but also provides stable support and protection for the bottom of the battery aluminum shell throughout the transportation and storage period from the completion of battery aluminum shell production to installation and use, effectively avoiding deformation caused by external pressure. When the battery aluminum shell arrives at its destination and is ready for installation and use, the operator can quickly and easily remove the temporary support cylinder without affecting the battery installation efficiency or subsequent use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0021] Figure 3 This is a schematic diagram of the temporary support tube of this utility model;

[0022] Figure 4 This is a bottom-view perspective view of the present invention;

[0023] Figure 5 This utility model Figure 4 A magnified view of a portion of region B in the middle;

[0024] In the diagram: 1. Battery aluminum shell body; 11. Annular slot; 2. Intermediate explosion-proof valve structure; 21. Circular central stamping groove; 22. Strip-shaped side stamping groove; 23. Circular central boss; 24. Annular groove; 31. Bottom cover; 311. Annular outer groove; 32. Temporary support cylinder; 321. Arc-shaped chamfered surface; 33. Annular raised strip. Detailed Implementation

[0025] 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 protection scope of the present utility model.

[0026] Example

[0027] Please see Figures 1 to 5 This is an embodiment of the present invention, which provides a technical solution: an intermediate-type aluminum battery casing with an explosion-proof valve, comprising...

[0028] The battery aluminum shell body 1 is a hollow cylindrical structure with an opening at the bottom.

[0029] The battery aluminum shell body 1 is equipped with an intermediate explosion-proof valve structure 2 at the top. The structure includes a circular central stamping groove 21 and a strip-shaped side stamping groove 22 machined on the top surface of the battery aluminum shell body 1 by mechanical stamping. The circular central stamping groove 21 and the strip-shaped side stamping groove 22 are connected. The structure also includes a circular central boss 23 at the center of the top surface of the battery aluminum shell body 1. The top surface of the battery aluminum shell body 1 is also machined with an annular groove 24 at the edge of the circular central boss 23. When the internal pressure of the battery aluminum shell body 1 rises abnormally, the circular central stamping groove 21 and the strip-shaped side stamping groove 22 are stamped into thin walls. At the same time, the annular groove 24 is machined on the outer side of the circular central boss 23. When the internal pressure of the battery aluminum shell body 1 rises abnormally, the annular groove 24 will be squeezed open by the pressure at the first time, thereby opening a pressure relief channel at the top center of the battery aluminum shell body 1. This achieves rapid and directional pressure relief, effectively limiting the pressure relief direction and the flame jet direction, and reducing the risk of accident spread.

[0030] And a temporary support structure set at the bottom of the battery aluminum shell body 1.

[0031] In this embodiment, preferably, the outer diameter of the battery aluminum shell body 1 is 30mm.

[0032] In this embodiment, preferably, the width of the annular notch 24 is 0.2 mm.

[0033] In this embodiment, preferably, the depth of the annular groove 24 is 55% of the thickness of the top of the battery aluminum shell body 1.

[0034] In this embodiment, preferably, the temporary support structure includes a bottom cover 31 and an integrated temporary support cylinder 32 disposed on the top surface of the bottom cover 31. The outer diameter of the temporary support cylinder 32 is consistent with the inner diameter of the bottom end of the battery aluminum shell body 1. In actual use, the temporary support cylinder 32 can be inserted into the inner side of the bottom end of the battery aluminum shell body 1, thereby providing effective support for the bottom opening of the battery aluminum shell body 1 during transportation and storage, effectively avoiding the deformation problem at the bottom opening of the battery aluminum shell body 1 caused by external pressure. When the battery aluminum shell body 1 arrives at its destination and is ready for welding and installation, the operator can quickly and easily remove the temporary support cylinder 32 without affecting the battery installation efficiency or subsequent use.

[0035] In this embodiment, preferably, the outer side of the top end of the temporary support cylinder 32 is provided with an arc-shaped chamfered surface 321, so that the top end of the temporary support cylinder 32 is easier to insert into the inner side of the battery aluminum shell body 1.

[0036] In this embodiment, preferably, the surface of the temporary support cylinder 32 is provided with an integral annular protrusion 33, and the inner wall of the bottom end of the battery aluminum shell body 1 is provided with an annular groove 11 corresponding to the annular protrusion 33. The temporary support cylinder 32, the annular protrusion 33 and the bottom cover 31 are all made of polyurethane material, which can undergo a certain elastic deformation when squeezed, so that after the temporary support cylinder 32 is inserted into the inner side of the bottom end of the battery aluminum shell body 1, the annular protrusion 33 will be squeezed into the annular groove 11, thereby playing a certain auxiliary limiting role for the temporary support cylinder 32.

[0037] In this embodiment, preferably, the surface of the bottom cover 31 is also provided with an annular outer groove 311, which facilitates the operator to pull the bottom cover 31 and facilitates the subsequent removal of the bottom cover 31 and the temporary support cylinder 32.

[0038] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery aluminum casing with an intermediate explosion-proof valve, characterized in that: include The battery aluminum shell body (1) is a hollow cylindrical structure with an opening at the bottom. And an intermediate explosion-proof valve structure (2) set at the top of the battery aluminum shell body (1), including a circular central stamping groove (21) and a strip side stamping groove (22) processed on the top surface of the battery aluminum shell body (1) by mechanical stamping, and the circular central stamping groove (21) and the strip side stamping groove (22) are connected. It also includes a circular central boss (23) set at the center of the top surface of the battery aluminum shell body (1), and the top surface of the battery aluminum shell body (1) is also processed with an annular groove (24) at the edge of the circular central boss (23) relative to the top surface of the battery aluminum shell body (1). And a temporary support structure set at the bottom of the battery aluminum shell body (1).

2. The intermediate-type aluminum battery casing with an explosion-proof valve according to claim 1, characterized in that: The outer diameter of the battery aluminum shell body (1) is 30-65mm.

3. The intermediate-type aluminum battery casing with an explosion-proof valve according to claim 1, characterized in that: The width of the annular groove (24) is 0.2-0.5 mm.

4. The intermediate-type aluminum battery casing with an explosion-proof valve according to claim 1, characterized in that: The depth of the annular groove (24) is 55% to 75% of the thickness of the top of the battery aluminum shell body (1).

5. The intermediate-type aluminum battery casing with an explosion-proof valve according to claim 1, characterized in that: The temporary support structure includes a bottom cover (31) and an integrated temporary support cylinder (32) disposed on the top surface of the bottom cover (31), and the outer diameter of the temporary support cylinder (32) is consistent with the inner diameter of the bottom end of the battery aluminum shell body (1).

6. The intermediate-type aluminum battery casing with an explosion-proof valve according to claim 5, characterized in that: The temporary support tube (32) has an arc-shaped chamfered surface (321) on the outer side of its top end.

7. The intermediate-type aluminum battery casing with an explosion-proof valve according to claim 5, characterized in that: The surface of the temporary support tube (32) is provided with an integral annular protrusion (33), and the bottom inner wall of the battery aluminum shell body (1) is provided with an annular groove (11) corresponding to the annular protrusion (33).

8. The intermediate-type aluminum battery casing with an explosion-proof valve according to claim 5, characterized in that: The surface of the bottom cover (31) is also provided with an annular outer groove (311).

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