Sealing ring of battery detection jig

Abstract

The application belongs to the technical field of lithium battery detection, and particularly relates to a sealing ring of a battery detection jig, which comprises a sealing ring body, a first annular protrusion and a second annular protrusion are coaxially arranged on the upper end face of the sealing ring body, the second annular protrusion is located in the annular inner part of the first annular protrusion, and the height of the second annular protrusion is lower than that of the first annular protrusion. The sealing ring of the battery detection jig is designed by adopting the mode that the first annular protrusion and the second annular protrusion with different heights are arranged on the upper end face of the sealing ring body, and the integrity of the sealing ring can be ensured in the process of separating the upper cover from the jig after the lithium battery leakage detection is completed.

Description

Technical Field

[0001] This application belongs to the field of lithium battery testing technology, specifically a sealing ring for a battery testing fixture. Background Technology

[0002] When testing lithium batteries for leakage, the battery is placed inside a fixture chamber, and then the chamber is sealed with a cover that mates with the fixture, creating a closed space. A sealing ring is required on the side of the cover facing the fixture to ensure a tight seal. However, after testing, the sealing ring often sticks to the fixture due to pressure from the air. This damage is frequently encountered when the cover is removed, necessitating replacement for subsequent tests, increasing costs. Utility Model Content

[0003] The purpose of this application is to address the shortcomings of existing technologies by designing a sealing ring for a battery testing fixture by providing a first annular protrusion and a second annular protrusion of different heights on the upper surface of the sealing ring body. This design ensures the integrity of the sealing ring during the process of separating the top cover from the fixture after the lithium battery leakage detection is completed.

[0004] The above-mentioned technical objective of this application is achieved through the following technical solution: A sealing ring for a battery testing fixture includes a sealing ring body. A first annular protrusion and a second annular protrusion are coaxially provided on the upper end surface of the sealing ring body. The second annular protrusion is located inside the annulus of the first annular protrusion, and the height of the second annular protrusion is lower than the height of the first annular protrusion.

[0005] Preferably, there is a preset gap between the first annular protrusion and the second annular protrusion.

[0006] Preferably, the upper surfaces of the first annular protrusion and the second annular protrusion are both arc-shaped.

[0007] Preferably, the gap is greater than the width of the first annular protrusion and the gap is greater than the width of the second annular protrusion.

[0008] Preferably, the lower end face of the sealing ring body is a plane.

[0009] Preferably, a third annular protrusion is coaxially provided on the lower end surface of the sealing ring body.

[0010] Preferably, the third annular protrusion is located directly below the gap.

[0011] The beneficial effects of this application are: This application designs a sealing ring for a battery testing fixture by providing a first annular protrusion and a second annular protrusion of different heights on the upper surface of the sealing ring body. This design ensures the integrity of the sealing ring during the process of separating the top cover from the fixture after the lithium battery leakage detection is completed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a cross-sectional view of this application.

[0013] Among them, 1. sealing ring body; 2. first annular protrusion; 3. second annular protrusion; 4. gap; 5. third annular protrusion. Detailed Implementation

[0014] like Figure 1-2 As shown, a sealing ring for a battery testing fixture includes a sealing ring body 1. A first annular protrusion 2 and a second annular protrusion 3 are coaxially provided on the upper end surface of the sealing ring body 1. The second annular protrusion 3 is located inside the annulus of the first annular protrusion 2, and the height of the second annular protrusion 3 is lower than the height of the first annular protrusion 2.

[0015] In this embodiment, during use, the sealing ring body 1 is installed on the top cover, with the side of the sealing ring body 1 having the first annular protrusion 2 and the second annular protrusion 3 facing away from the top cover. Then, when detecting lithium battery leakage, after the top cover is closed onto the fixture, since the height of the second annular protrusion 3 is lower than the height of the first annular protrusion 2, the pressure on the second annular protrusion 3 in contact with the fixture is less than the pressure on the first annular protrusion 2. Since the contact area between the first annular protrusion 2 and the fixture is smaller than the contact area between the sealing ring body 1 and the fixture when the first annular protrusion 2 and the second annular protrusion 3 are not provided, its adhesive force is less than the adhesive force between the sealing ring body 1 and the fixture when the first annular protrusion 2 is not provided. Therefore, the probability of the sealing ring body 1 being torn is reduced during the process of removing the top cover from the fixture. And because the second annular protrusion 3 is provided, the sealing ring body 1 does not fail to achieve a sealing effect due to the small contact area with the fixture. Furthermore, the design of the second annular protrusion 3 ensures that, during the removal of the second annular protrusion 3 from the fixture, the elasticity of the first annular protrusion 2 prevents the second annular protrusion 3 from being violently torn off the fixture, thus protecting the second annular protrusion 3. Therefore, this design ensures the integrity of the sealing ring during the separation of the top cover from the fixture. As a preferred embodiment, a pre-set gap 4 is provided between the first annular protrusion 2 and the second annular protrusion 3. This gap 4 provides space for the first annular protrusion 2 and the second annular protrusion 3 to deform under pressure, thereby allowing them to fully contact the fixture.

[0016] As a preferred embodiment, the upper surfaces of the first annular protrusion 2 and the second annular protrusion 3 are both arc-shaped. This arrangement allows the first annular protrusion 2 and the second annular protrusion 3 to gradually separate from the fixture during the separation of the top cover from the fixture due to their own deformation and contraction, thereby reducing the force required to separate the top cover from the fixture and thus reducing the likelihood of damage to the sealing ring.

[0017] As a preferred embodiment, the gap 4 is greater than the width of the first annular protrusion 2, and the gap 4 is greater than the width of the second annular protrusion 3. This arrangement is intended to provide space for the first annular protrusion 2 and the second annular protrusion 3 to deform when compressed.

[0018] As a preferred embodiment, the lower end face of the sealing ring body 1 is a plane. This arrangement facilitates the secure mounting of the sealing ring body 1 onto the top cover.

[0019] As a preferred embodiment, a third annular protrusion 5 is coaxially provided on the lower end face of the sealing ring body 1. This arrangement allows for the creation of a groove on the upper cover that mates with the third annular protrusion 5 when the sealing ring body 1 is bonded to the upper cover. This increases the contact area between the sealing ring body 1 and the upper cover, thereby making the sealing ring body 1 more firmly fixed to the upper cover.

[0020] As a preferred embodiment, the third annular protrusion 5 is located directly below the gap 4. This arrangement is intended to make the third annular protrusion 5 more balanced, thereby ensuring that the sealing ring body 1 is more securely fixed to the upper cover.

Claims

1. A sealing ring for a battery testing fixture, characterized in that, The sealing ring body (1) includes a first annular protrusion (2) and a second annular protrusion (3) coaxially provided on the upper end surface of the sealing ring body (1). The second annular protrusion (3) is located inside the annulus of the first annular protrusion (2), and the height of the second annular protrusion (3) is lower than the height of the first annular protrusion (2).

2. The sealing ring of the battery testing fixture according to claim 1, characterized in that: A preset gap (4) is formed between the first annular protrusion (2) and the second annular protrusion (3).

3. The sealing ring of the battery testing fixture according to claim 1, characterized in that: The upper surface of the first annular protrusion (2) and the upper surface of the second annular protrusion (3) are both arc-shaped.

4. The sealing ring of the battery testing fixture according to claim 2, characterized in that: The gap (4) is greater than the width of the first annular protrusion (2), and the gap (4) is greater than the width of the second annular protrusion (3).

5. The sealing ring of a battery testing fixture according to claim 2, characterized in that: The lower end face of the sealing ring body (1) is a plane.

6. The sealing ring of a battery testing fixture according to claim 5, characterized in that: The lower end face of the sealing ring body (1) is provided with a third annular protrusion (5).

7. The sealing ring of a battery testing fixture according to claim 6, characterized in that: The third annular protrusion (5) is located directly below the gap (4).

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