A seal assembly

Abstract

The utility model discloses a sealing assembly for solving the technical problem of low test efficiency caused by the general adoption of glue to plug the through hole of the pole when the existing battery top cover plate carries out air tightness test. The sealing assembly of the utility model is used for sealing the through hole of the pole assembled on the top cover plate, wherein the through hole penetrates the pole along the axial direction of the pole, the sealing assembly comprises an upper sealing press-fit module for pressing the top of the pole to seal the top end opening of the through hole and a lower sealing press-fit module for pressing the bottom of the pole to seal the bottom end opening of the through hole, and the upper sealing press-fit module is threadedly connected with the lower sealing press-fit module to clamp the pole and seal the through hole.

Description

Technical Field

[0001] This utility model relates to the field of battery testing equipment technology, and in particular to a sealing component. Background Technology

[0002] In general, the components in the top cover of a secondary battery need to be strictly controlled to ensure a gapless fit during assembly to prevent external moisture from entering the battery cell due to poor airtightness, which would affect the safe use of the battery.

[0003] During the assembly and welding process of the secondary battery top cover, external forces are inevitably applied to the terminals to varying degrees. This may affect the reliability of the connection between the terminals and other components such as the top cover, causing air leakage due to the external forces affecting the assembled terminals. Therefore, it is necessary to conduct simulated tests on the airtightness of the terminals after applying thrust and tension in different X, Y, and Z directions to determine the resistance of the assembled top cover to external forces.

[0004] Currently, during airtightness testing, operators must first seal the existing through holes on the electrode post to avoid affecting subsequent test results. Specifically, this is done by using adhesive to seal the through holes. Next, after the adhesive has solidified, the airtightness test begins. The operator first places the top cover plate into a water testing fixture, then places the fixture and top cover plate together into a plastic box filled with clean water. High-pressure gas enters the cavity through the lower mold of the water testing fixture. If no bubbles appear on the upper mold of the top cover plate, the airtightness of the top cover plate after the electrode post torque test is OK and passes; if bubbles appear on the upper mold of the top cover plate, the airtightness of the top cover plate after the electrode post torque test is NG and fails.

[0005] The above testing process reveals the following drawbacks to sealing the through-holes of the electrode post with adhesive: 1. Adhesive application requires precise operation; slight errors can easily result in adhesive being applied to other areas; 2. After application, a period of time is required for the adhesive to cure. Therefore, the current method of sealing with adhesive significantly impacts overall testing efficiency.

[0006] Therefore, finding a technical solution that can solve the above-mentioned technical problems has become an important research topic for those skilled in the art. Utility Model Content

[0007] This utility model discloses a sealing component to solve the technical problem that the existing battery top cover plate generally uses glue to seal the terminal hole during airtightness testing, resulting in low testing efficiency.

[0008] This utility model provides a sealing assembly for sealing a through hole in an electrode post mounted on a top cover plate. The through hole extends through the electrode post along its axial direction. The sealing assembly includes an upper sealing pressing module for pressing the top of the electrode post to seal the top opening of the through hole and a lower sealing pressing module for pressing the bottom of the electrode post to seal the bottom opening of the through hole. The upper sealing pressing module and the lower sealing pressing module are threadedly connected to clamp the electrode post and seal the through hole.

[0009] Optionally, the upper sealing pressing module includes a locking screw, an upper support base, and an upper sealing element disposed on the bottom surface of the upper support base;

[0010] The locking screw passes through the upper support and the upper seal, and can be driven to rotate relative to the upper support and the upper seal.

[0011] The lower sealing pressing module includes screw holes, a lower support base, and a lower sealing element disposed on the top surface of the lower support base;

[0012] The screw hole extends through the lower support base and the lower seal;

[0013] When the lower sealing pressing module is pressed against the bottom of the pole post, the lower sealing element is pressed against the bottom of the pole post and seals the bottom opening of the through hole, and the screw hole is arranged opposite to the through hole;

[0014] When the upper sealing pressing module is pressed onto the top of the pole post, the upper sealing member is pressed onto the top of the pole post and seals the top opening of the through hole, and the locking screw passes through the through hole and is threaded into the screw hole.

[0015] Optionally, the lower seal has an upwardly protruding lower locking post that matches the shape of the through hole;

[0016] The screw hole passes through the lower locking post. When the lower sealing pressing module is pressed against the bottom of the pole post, the lower locking post is engaged in the through hole.

[0017] Optionally, the upper seal has a downwardly protruding upper engaging post that matches the shape of the through hole;

[0018] The locking screw passes through the upper locking post. When the upper sealing pressing module is pressed against the top of the pole post, the upper locking post is engaged in the through hole.

[0019] Optionally, the upper seal is a sealing rubber block or a sealing silicone block.

[0020] Optionally, the lower seal is a sealing rubber block or a sealing silicone block.

[0021] Optionally, the locking screw is a locking screw made of rust-resistant material.

[0022] Optionally, the locking screw is coated with an anti-rust coating.

[0023] Optionally, the upper support and the upper seal are an integral structure.

[0024] Optionally, the lower support and the lower seal are an integral structure.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] In the sealing assembly of this invention, an upper sealing pressing module is used to press the top of the electrode post to seal the top opening of the through hole, and a lower sealing pressing module is used to press the bottom of the electrode post to seal the bottom opening of the through hole. The upper and lower sealing pressing modules are threadedly connected to clamp the electrode post and seal the through hole. Through this design, the upper and lower sealing pressing modules can be pressed together by the threaded connection to seal the through hole, making the operation simple and quick, and greatly improving testing efficiency. Attached Figure Description

[0027] 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.

[0028] Figure 1 A schematic diagram of the structure of a sealing assembly provided by this utility model after the upper sealing pressing module and the lower sealing pressing module are threadedly connected;

[0029] Figure 2 A schematic diagram of the structure of the lower sealing pressing module and the pole column in a sealing assembly provided by this utility model when they are ready to be fitted together;

[0030] Figure 3 A schematic diagram of the structure of the upper sealing pressing module and the lower sealing pressing module in a sealing assembly provided by this utility model, when they are ready to be fitted with the pole post;

[0031] Figure 4 This utility model provides a schematic diagram of the structure in which the upper sealing pressing module and the lower sealing module clamp the pole and seal the through hole in a sealing assembly.

[0032] Illustration: Upper sealing pressing module 1; Upper support base 101; Upper seal 102; Locking screw 103; Lower sealing pressing module 2; Lower support base 201; Lower seal 202; Screw hole 203; Lower locking post 204; End post A; Through hole A1. Detailed Implementation

[0033] This utility model discloses a sealing component to solve the technical problem that the existing battery top cover plate generally uses glue to seal the terminal hole during airtightness testing, which leads to low testing efficiency.

[0034] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1 to 4 This utility model provides a sealing assembly for sealing a through hole in an electrode post mounted on a top cover plate. The through hole extends through the electrode post along its axial direction. The sealing assembly includes an upper sealing pressing module 1 for pressing the top of the electrode post to seal the top opening of the through hole and a lower sealing pressing module 2 for pressing the bottom of the electrode post to seal the bottom opening of the through hole. The upper sealing pressing module 1 and the lower sealing pressing module 2 are threadedly connected to clamp the electrode post and seal the through hole.

[0036] In the sealing assembly of this invention, the upper sealing pressing module 1 is used to press the top of the electrode post to seal the top opening of the through hole, and the lower sealing pressing module 2 is used to press the bottom of the electrode post to seal the bottom opening of the through hole. The upper sealing pressing module 1 and the lower sealing pressing module 2 are threadedly connected to clamp the electrode post and seal the through hole. Through this design, the upper sealing pressing module 1 and the lower sealing pressing module 2 can be used to press the electrode post together via a threaded connection, thereby sealing the through hole. The operation is simple and quick, greatly improving testing efficiency.

[0037] Specifically, the upper sealing and pressing module 1 in this embodiment includes a locking screw 103, an upper support base 101, and an upper sealing member 102 disposed on the bottom surface of the upper support base 101.

[0038] The locking screw 103 passes through the upper support 101 and the upper seal 102, and can be driven to rotate relative to the upper support 101 and the upper seal 102.

[0039] The lower sealing pressing module 2 in this embodiment includes a screw hole 203, a lower support base 201, and a lower sealing member 202 disposed on the top surface of the lower support base 201.

[0040] The screw hole 203 passes through the lower support 201 and the lower seal 202;

[0041] When the lower sealing pressing module 2 is pressed against the bottom of the pole post, the lower sealing member 202 is pressed against the bottom of the pole post and seals the bottom opening of the through hole, and the screw hole 203 is arranged opposite to the through hole;

[0042] When the upper sealing pressing module 1 is pressed onto the top of the pole post, the upper sealing member 102 is pressed onto the top of the pole post and seals the top opening of the through hole, and the locking screw 103 passes through the through hole and is threaded into the screw hole 203.

[0043] It should be noted that, through the above design, when the operator turns the locking screw 103, the first seal and the second seal slowly approach each other and press against the upper and lower openings of the through hole respectively, thereby achieving the sealing of the pole through hole.

[0044] Furthermore, in this embodiment, the lower sealing member 202 has an upwardly protruding lower engaging post 204 that matches the shape of the through hole;

[0045] The screw hole 203 passes through the lower locking post 204. When the lower sealing pressing module 2 is pressed against the bottom of the pole post, the lower locking post 204 is engaged in the through hole.

[0046] It should be noted that the above design allows operators to easily align the lower sealing pressing module 2 with the bottom opening of the through hole, ensuring that the lower sealing pressing module 2 and the upper sealing pressing module 1 can completely press the pole and seal the through hole.

[0047] In addition, it should be noted that the shape of the lower locking post 204 in this embodiment is specifically matched with the shape of the bottom opening of the through hole. For example, in one specific embodiment, the shape of the bottom opening of the through hole is square, while the shape of the lower locking post 204 is a square column structure.

[0048] Furthermore, in this embodiment, the upper sealing member 102 has an upper engaging post that matches the shape of the through hole;

[0049] The locking screw 103 passes through the upper locking post. When the upper sealing pressing module 1 is pressed against the top of the pole post, the upper locking post is engaged in the through hole.

[0050] It should be noted that the above design allows operators to easily align the upper sealing pressing module 1 with the top opening of the through hole, ensuring that the upper sealing pressing module 1 and the lower sealing pressing module 2 can completely press the pole and seal the through hole.

[0051] Furthermore, to ensure sealing, the upper seal 102 and the lower seal 202 are preferably made of elastic materials, such as sealing rubber blocks or sealing silicone blocks.

[0052] Furthermore, since the sealing assembly needs to be placed in water for testing along with the top cover plate after sealing the through hole of the pole, in order to avoid the locking screw 103 from rusting due to long-term contact with water, the locking screw 103 in this embodiment is preferably made of a rust-resistant material, such as stainless steel.

[0053] In another specific embodiment, the locking screw 103 can be made of ordinary metal material and is coated with an anti-rust coating.

[0054] Furthermore, in this embodiment, the upper support 101 and the upper sealing element 102 can be an integral structure.

[0055] The lower support 201 and the lower seal 202 can be an integral structure.

[0056] It should be noted that the above design can reduce the number of parts in the sealing assembly and improve its overall structural integrity.

[0057] The above is a detailed description of the specific structure of a sealing component provided by this utility model. The following is a further description of this sealing component using a specific application process:

[0058] Before starting the airtightness test, the operator first aligns the upper seal 102 and the lower seal 202 with the top and bottom openings of the through hole of the pole, respectively. Then, by rotating the locking screw 103, the locking screw 103 and the screw hole 203 are threaded together. Under the threaded engagement, the upper seal 102 and the lower seal 202 clamp the pole and seal the through hole. After the above work is completed, the sealing assembly and the top cover plate are placed together into the water testing fixture. Then, the entire water testing fixture is placed into the test water tank. High-pressure gas enters the cavity through the lower mold of the water testing fixture. If no water bubbles appear in the upper mold of the top cover plate, it means that the airtightness is OK after the pole torque test. If water bubbles appear in the upper mold of the top cover plate, it means that the airtightness is NG after the pole torque test.

[0059] The sealing component provided by this utility model has been described in detail above. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sealing assembly for sealing a through-hole in an electrode post mounted on a top cover plate, wherein, The through hole extends through the pole post along the axial direction of the pole post. The sealing assembly includes an upper sealing pressing module (1) for pressing the top of the pole post to seal the top opening of the through hole and a lower sealing pressing module (2) for pressing the bottom of the pole post to seal the bottom opening of the through hole. The upper sealing pressing module (1) and the lower sealing pressing module (2) are threadedly connected to clamp the pole post and seal the through hole.

2. The sealing assembly according to claim 1, characterized in that, The upper sealing pressing module (1) includes a locking screw (103), an upper support base (101), and an upper sealing element (102) disposed on the bottom surface of the upper support base (101). The locking screw (103) passes through the upper support (101) and the upper seal (102) and can be driven to rotate relative to the upper support (101) and the upper seal (102); The lower sealing pressing module (2) includes a screw hole (203), a lower support base (201), and a lower sealing element (202) disposed on the top surface of the lower support base (201). The screw hole (203) passes through the lower support base (201) and the lower seal (202). When the lower sealing pressing module (2) is pressed against the bottom of the pole post, the lower sealing element (202) is pressed against the bottom of the pole post and seals the bottom opening of the through hole, and the screw hole (203) is arranged opposite to the through hole; When the upper sealing pressing module (1) is pressed onto the top of the pole post, the upper sealing element (102) is pressed onto the top of the pole post and seals the top opening of the through hole, and the locking screw (103) passes through the through hole and is threaded into the screw hole (203).

3. The sealing assembly according to claim 2, characterized in that, The lower seal (202) has an upwardly protruding lower locking post (204) that matches the shape of the through hole. The screw hole (203) passes through the lower locking post (204). When the lower sealing pressing module (2) is pressed against the bottom of the pole post, the lower locking post (204) is engaged in the through hole.

4. The sealing assembly according to claim 3, characterized in that, The upper sealing element (102) has an upper engaging post that matches the shape of the through hole; The locking screw (103) passes through the upper locking post. When the upper sealing pressing module (1) is pressed against the top of the pole post, the upper locking post is engaged in the through hole.

5. The sealing assembly according to claim 2, characterized in that, The upper sealing element (102) is a sealing rubber block or a sealing silicone block.

6. The sealing assembly according to claim 2, characterized in that, The lower seal (202) is a sealing rubber block or a sealing silicone block.

7. The sealing assembly according to claim 2, characterized in that, The locking screw (103) is a locking screw (103) made of rust-resistant material.

8. The sealing assembly according to claim 2, characterized in that, The locking screw (103) is coated with an anti-rust coating.

9. The sealing assembly according to claim 2, characterized in that, The upper support (101) and the upper sealing element (102) are an integral structure.

10. The sealing assembly according to claim 2, characterized in that, The lower support (201) and the lower seal (202) are an integral structure.

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