A sealed structure and valve-regulated battery thereof

Abstract

The utility model discloses a sealing structure and valve regulated battery thereof relates to valve regulated battery manufacturing field. The sealing structure includes the partition wall and lead spare, the lead spare sliding joint is in the partition wall, be provided with the sealing washer between the partition wall and lead spare, the sealing washer is embedded between the partition wall and lead spare, and the sealing interface is formed to the sealing washer with the partition wall through welding lead spare. The sealing structure and valve regulated battery thereof through embedding the sealing washer between lead spare and partition wall, when the through -wall welding is welded, lead melts and extrudes the sealing washer, and the tight sealing interface is formed after cooling, and the elastic compensation of sealing washer, eliminate the clearance caused by welding thermal deformation, realize reliable sealing.

Description

Technical Field

[0001] This utility model relates to the field of valve-regulated storage battery manufacturing technology, specifically a sealed structure and its valve-regulated storage battery. Background Technology

[0002] Valve-regulated lead-acid batteries are a type of lead-acid battery that achieves "maintenance-free" operation through a sealed structure and gas recombination technology. They are widely used in fields such as communications, power, and energy storage.

[0003] The sealing mechanism of valve-regulated lead-acid batteries is generally achieved through welding. Cross-bridge welding and through-wall welding are common connection methods for valve-regulated batteries. Traditional through-wall welding achieves sealing through the direct compression of lead against the separator; however, due to the plastic deformation of lead and the heat effect of welding, it is prone to incomplete sealing, posing a risk of leakage. Leakage reduces the battery's sealing performance, affecting its service life and safety. Therefore, an improved sealing structure is urgently needed to solve these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sealed structure and its valve-regulated storage battery, which solves the problem that traditional through-wall welding is prone to poor sealing due to the plastic deformation of lead and the heat effect of welding, resulting in the risk of air leakage. Air leakage will reduce the sealing performance of the battery and affect its service life and safety.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a sealing structure includes a partition wall and a lead component, the lead component is slidably engaged with the partition wall, a sealing gasket is provided between the partition wall and the lead component, the sealing gasket is embedded between the partition wall and the lead component, and the sealing gasket and the partition wall form a sealing interface by welding the lead component.

[0006] Preferably, a cavity is provided between the partition wall and the lead parts, and the cavity is engaged with the sealing gasket.

[0007] Preferably, the inner side of the sealing gasket abuts against the partition wall.

[0008] Preferably, the outer side of the sealing gasket abuts against the lead part.

[0009] Preferably, the sealing gasket is made of a high-temperature resistant elastic material.

[0010] Preferably, the surface of the sealing gasket is textured, and the texture is used to enhance the sealing performance.

[0011] Preferably, the thickness of the sealing gasket is 0.5-1mm.

[0012] A valve-regulated lead-acid battery employing any one of the sealing structures described above.

[0013] This utility model discloses a sealed structure and its valve-regulated storage battery, which has the following beneficial effects:

[0014] This sealing structure, by embedding a sealing gasket between the lead component and the partition wall, allows the lead to melt and compress the gasket during through-wall welding. Upon cooling, a tight sealing interface is formed. The elasticity of the gasket compensates for gaps caused by welding heat deformation, achieving a reliable seal and solving the leakage problem of traditional through-wall welding. This improves the reliability and lifespan of the battery. The gasket material is resistant to electrolyte corrosion, extending its service life. Furthermore, the structure is simple, requiring no additional processing steps, and is compatible with existing through-wall welding processes. Attached Figure Description

[0015] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Fig. 1 This is a cross-sectional schematic diagram of the present invention;

[0017] Fig. 2 This is a schematic diagram of the planar structure of the sealing gasket of this utility model;

[0018] In the diagram: 1. Partition wall; 2. Lead parts; 3. Sealing gasket; 4. Sealing interface. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] This utility model discloses a sealing structure and its valve-regulated storage battery.

[0021] Example 1:

[0022] According to the appendix Figs. 1-2As shown, the battery includes a partition wall 1 and a lead component 2. The lead component 2 is slidably engaged with the partition wall 1. A sealing gasket 3 is placed between the partition wall 1 and the lead component 2. The sealing gasket 3 is embedded between the partition wall and the lead component. By welding the lead component 2, the sealing gasket 3 and the partition wall 1 form a sealed interface 4. During welding, the sealing gasket 3 is squeezed by the molten lead component 2, and after cooling, it forms a tight sealed interface 4. Its elastic compensation characteristics can effectively eliminate gaps caused by welding heat deformation. This fundamentally solves the air leakage problem that is prone to occur in traditional through-wall welding, creating a relatively stable chemical environment inside the battery, preventing external air from entering and causing adverse consequences such as electrolyte oxidation and plate sulfation, thus ensuring stable battery performance.

[0023] Furthermore, a cavity is provided between the partition wall 1 and the lead part 2, and the cavity is engaged with the sealing gasket 3.

[0024] Furthermore, the inner side of the sealing gasket 3 abuts against the partition wall 1. The overall structure consists of only three main components: the partition wall 1, the lead part 2, and the sealing gasket 3, eliminating the need for additional complex processing steps or excessive parts. This simple structure not only reduces production costs but also minimizes potential failure points caused by structural complexity, thereby improving production efficiency and product stability.

[0025] Furthermore, the outer side of the sealing gasket 3 abuts against the lead part 2. By embedding the sealing gasket 3 between the lead part 2 and the partition wall 1, during through-wall welding, the lead part 2 melts and compresses the sealing gasket 3. After cooling, a tight sealing interface 4 is formed. The elastic compensation of the sealing gasket 3 eliminates the gap caused by welding heat deformation, achieving a reliable seal and solving the leakage problem of traditional through-wall welding, thus improving the reliability and lifespan of the battery. The material of the sealing gasket 3 is resistant to electrolyte corrosion, extending its service life. Moreover, its structure is simple, requiring no additional processing steps, and is compatible with existing through-wall welding processes.

[0026] Example 2:

[0027] According to the appendix Figs. 1-2 As shown, it includes a partition wall 1 and a lead part 2. The lead part 2 is slidably snapped onto the partition wall 1. A sealing gasket 3 is provided between the partition wall 1 and the lead part 2. The sealing gasket 3 is embedded between the partition wall and the lead part. By welding the lead part 2, the sealing gasket 3 and the partition wall 1 form a sealing interface 4.

[0028] Furthermore, the sealing gasket 3 is made of a high-temperature resistant and corrosion-resistant elastic material. This material is resistant to electrolyte corrosion and can remain stable in the complex electrolyte environment of the battery for a long time. It will not be damaged or its performance degraded due to electrolyte erosion, thus extending the service life of the sealing gasket 3 itself and indirectly extending the service life of the entire battery. The high-temperature resistant elastic material used in the sealing gasket 3 maintains good elasticity even under the high-temperature welding environment, ensuring that it can be effectively compressed and form a tight seal during the welding process. Simultaneously, during subsequent battery use, the elasticity of the sealing gasket 3 can also buffer and seal against thermal expansion and contraction caused by temperature changes, maintaining the durability of the sealing effect.

[0029] It is important to note that the surface of the sealing gasket 3 is textured. These textures increase the contact area and friction between the sealing gasket 3 and the partition wall 1 and the lead part 2, thereby enhancing the sealing performance. Similar to how the tread pattern on the surface of a tire increases friction with the ground, the texture on the surface of the sealing gasket 3 also allows it to better conform to the contact surface, preventing the sealing gasket 3 from shifting or loosening during use and ensuring the stability of the sealing effect.

[0030] It is important to note that the thickness of sealing gasket 3 is 0.5-1mm. While ensuring a good seal, the appropriate thickness can be selected based on actual needs. A thinner sealing gasket 3 saves space and facilitates battery miniaturization; a thicker sealing gasket 3 provides better cushioning and sealing performance, adapting to different working environments and requirements.

[0031] It is important to note that the sealing gasket 3 can be designed as annular, square, or other geometries that conform to the welding surface, and can be customized according to the specific shapes and welding requirements of the partition wall 1 and the lead component 2. This flexibility allows the sealing structure to adapt to the design needs of different types and specifications of batteries, thus having a wider range of applications.

[0032] A valve-regulated storage battery adopts the sealed structure disclosed in Embodiment 1 or 2 above.

[0033] Working principle: The sealing gasket 3 is embedded between the lead part 2 and the partition wall 1. During through-wall welding, the lead part 2 melts and squeezes the sealing gasket 3. After cooling, a tight sealing interface 4 is formed. The elastic compensation of the sealing gasket 3 eliminates the gap caused by welding heat deformation, thus achieving a reliable seal.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing structure comprising a partition wall (1) and a lead component (2), wherein the lead component (2) is slidably engaged with the partition wall (1), characterized in that, A sealing gasket (3) is provided between the partition wall (1) and the lead part (2). The sealing gasket (3) is embedded between the partition wall and the lead part. By welding the lead part (2), the sealing gasket (3) and the partition wall (1) form a sealing interface (4).

2. The sealing structure according to claim 1, characterized in that, A cavity is provided between the partition wall (1) and the lead part (2), and the cavity is engaged with the sealing gasket (3).

3. The sealing structure according to claim 2, characterized in that, The inner side of the sealing gasket (3) abuts against the partition wall (1).

4. A sealing structure according to claim 3, characterized in that, The outer side of the sealing gasket (3) abuts against the lead part (2).

5. A sealing structure according to claim 1, characterized in that, The sealing gasket (3) is made of high-temperature resistant elastic material.

6. A sealing structure according to claim 1, characterized in that, The surface of the sealing gasket (3) is textured, which is used to enhance the sealing performance.

7. A sealing structure according to claim 1, characterized in that, The thickness of the sealing gasket (3) is 0.5-1mm.

8. A valve-regulated storage battery, characterized in that, The sealing structure described in any one of claims 1-7 is adopted.

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