Helium leak tight seal fill structure

Abstract

The utility model relates to the technical field of battery airtightness detection, concretely relates to a helium detection seal filling structure. The utility model provides a helium detection seal filling structure, its characterized in that, including: filling mouth, along the axial direction of filling mouth, the gas hole that is set up in filling mouth is through filling mouth for the gas passing, filling head, filling head is provided with the gas filling nozzle, and the accommodating cavity that can accommodate filling mouth is set up in filling head, and the opening of accommodating cavity is located in the lower part of filling head, and accommodating cavity is communicated with the gas filling nozzle, when filling mouth is placed into accommodating cavity, the gas filling nozzle is communicated with the gas hole, and the upper part of filling mouth is abutted to the upper wall in accommodating cavity, and the lower part of filling mouth is located outside filling head, sealing ring, sealing ring is set up between filling head and the battery to be detected. The utility model is good in airtightness, does not damage the battery, is easy to clean, and greatly improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of battery airtightness testing, specifically to a helium detection sealing filling structure. Background Technology

[0002] The helium detection filling head must ensure both excellent sealing and cleanliness. Production data shows that the production line must be stopped for cavity cleaning every hour of operation, a frequency as high as once per hour, with each cleaning session consuming approximately 15 minutes of production time, severely restricting equipment efficiency. As production pace accelerates and output demands increase, this problem worsens; higher output leads to more frequent cleaning operations, creating a vicious cycle. Therefore, a helium detection sealing filling structure that guarantees both airtightness and cleanliness needs to be designed. Utility Model Content

[0003] To address the technical problem of existing helium detection filling heads affecting production efficiency, this utility model provides a helium detection sealed filling structure with good airtightness, no damage to the battery, and easy cleaning, which greatly improves production efficiency.

[0004] This utility model provides a helium detection sealed filling structure, including: a filling nozzle, with a gas hole through the filling nozzle to allow gas to pass through along the axial direction of the filling nozzle; a filling head, with an inflation nozzle, and a receiving cavity inside the filling head capable of accommodating the filling nozzle, the opening of the receiving cavity being located at the lower part of the filling head, the receiving cavity communicating with the inflation nozzle, and when the filling nozzle is placed in the receiving cavity, the inflation nozzle communicating with the gas hole, the upper part of the filling nozzle abutting against the upper wall inside the receiving cavity, and the lower part of the filling nozzle being located outside the filling head; and a sealing ring, which is disposed between the filling head and the battery to be tested.

[0005] Furthermore, the filling nozzle includes a first connecting part and a second connecting part. The first connecting part abuts against the upper wall inside the accommodating cavity, and the second connecting part is located on the side of the first connecting part opposite to the filling head. The second connecting part can abut against the battery to be tested.

[0006] Furthermore, both the first connecting part and the second connecting part are cylindrical, and the circumferential diameter of the first connecting part is larger than that of the second connecting part.

[0007] Furthermore, the inner diameter of the accommodating cavity is the same as the outer diameter of the first connecting part.

[0008] Furthermore, a first slot is provided on the side of the first connecting part facing the filling head.

[0009] Furthermore, a second slot is provided inside the filling head, and the second slot is connected to the receiving cavity.

[0010] Furthermore, there are multiple second slots, which are arranged in an array along the outer periphery of the accommodating cavity.

[0011] Furthermore, a sealing groove adapted to the sealing ring is provided on the side of the filling head facing away from the air inlet.

[0012] Furthermore, the filling nozzle is made of fluororubber.

[0013] Furthermore, when the filling nozzle is placed into the receiving cavity, the upper part of the filling nozzle abuts against the upper wall of the receiving cavity, and the lower wall of the filling nozzle is 3mm away from the lower wall of the receiving cavity.

[0014] The beneficial effects of this utility model are as follows: This invention provides a battery helium testing solution that offers excellent gas tightness, causes no damage to the battery, is easy to clean, and saves time on cleaning the helium testing structure, thereby improving production efficiency. 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the mechanism of one embodiment of the filling head of this utility model; Figure 2 This is a schematic diagram of the mechanism of one embodiment of the filling nozzle of this utility model; Figure 3 This is a schematic diagram of the mechanism of one embodiment of the filling head of this utility model; Figure 4 This is a schematic diagram of the mechanism of one embodiment of the present utility model; Figure 5 This is a cross-sectional view of one embodiment of the filling head of this utility model.

[0017] Explanation of key figure labels: 1-filling nozzle, 11-first connecting part, 12-second connecting part, 111-first slot, 2-filling head, 21-air inlet, 22-accommodating cavity, 232-second slot, 24-sealing groove, 3-sealing ring. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a helium detection sealing filling structure, including a filling nozzle 1, a filling head 2, and a sealing ring 3. The filling head 2 has a receiving cavity 22 capable of accommodating the filling nozzle 1. The opening of the receiving cavity 22 is located at the lower part of the filling head 2. Along the axial direction of the filling nozzle 1, a gas hole is provided inside the filling nozzle 1 to allow gas to pass through. The filling head 2 is provided with an inflation nozzle 21, which communicates with the receiving cavity 22. When the filling nozzle 1 is placed in the receiving cavity 22, the inflation nozzle 21 communicates with the gas hole. At this time, gas can enter from the inflation nozzle 21 into one end of the gas hole and exit from the other end. The upper part of the filling nozzle 1 abuts against the upper wall inside the receiving cavity 22, and the lower part of the filling nozzle 1 is located outside the filling head 2. A sealing ring 3 is positioned between the charging head 2 and the battery under test. The charging head 2 has a sealing groove 24 on its side facing away from the filling nozzle 21, which is adapted to the sealing ring 3. The sealing ring 3 maintains the seal between the charging head 2 and the battery under test. While ensuring airtightness, the sealing ring 3 contacts the outer edge of the battery under test, preventing a large vacuum inside and ensuring airtightness and cleanliness. The sealing ring is not shown in the figure. During use, the charging head 2 is pressed down, causing the filling nozzle 1 to deform and come into contact with the battery under test, maintaining a seal. The seal between the charging head 2 and the filling nozzle 1 is good, and the sealing ring 3 ensures the airtightness between them. At this time, helium gas is injected from the filling nozzle 21, enters the vent in the filling nozzle 1, and then enters the helium detection port of the battery under test. In one embodiment, when the filling nozzle 1 is placed into the receiving cavity 22, the upper part of the filling nozzle 1 abuts against the upper wall inside the receiving cavity 22, and the lower wall of the filling nozzle 1 is 3mm different from the lower wall of the receiving cavity 22. Pressing down can compress and ensure better airtightness. In a preferred embodiment, the sealing ring 3 is made of nitrile rubber, and the filling nozzle 1 is made of fluororubber.

[0020] The filling nozzle 1 includes a first connecting portion 11 and a second connecting portion 12. The first connecting portion 11 abuts against the upper wall of the accommodating cavity 22, and the second connecting portion 12 is located on the side of the first connecting portion 11 facing away from the filling head 2. The second connecting portion 12 can abut against the battery to be tested. Both the first connecting portion 11 and the second connecting portion 12 are cylindrical, and the circumferential diameter of the first connecting portion 11 is larger than the circumferential diameter of the second connecting portion 12. The inner diameter of the accommodating cavity 22 is the same as the outer diameter of the first connecting portion 11.

[0021] like Figure 2 As shown, the first connecting part 11 has a first slot 111 on the side facing the filling head 2. Figure 4 and Figure 5 As shown, a second slot 232 is provided inside the filling head 2, and the second slot 232 communicates with the receiving cavity 22. The first slot 111 provides a certain deformation space for the filling nozzle 1, and the design of the second slot 232 can also provide a certain deformation space for the filling nozzle 1. In a preferred embodiment, there are multiple second slots 232, and the multiple second slots 232 are arranged in an array along the outer periphery of the receiving cavity 22.

[0022] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention.

Claims

1. A helium detection and sealing filling structure, characterized in that, include: The filling nozzle has an air hole that passes through it to allow gas to pass through, along the axial direction of the filling nozzle. The filling head is equipped with an air nozzle and a receiving cavity inside the filling head that can accommodate the air nozzle. The opening of the receiving cavity is located at the lower part of the filling head. The receiving cavity is connected to the air nozzle. When the air nozzle is placed in the receiving cavity, the air nozzle is connected to the air hole. The upper part of the filling nozzle abuts against the upper wall inside the receiving cavity, and the lower part of the filling nozzle is located outside the filling head. A sealing ring is placed between the filling head and the battery to be tested.

2. The helium detection sealing filling structure as described in claim 1, characterized in that, The filling nozzle includes a first connecting part and a second connecting part. The first connecting part abuts against the upper wall inside the accommodating cavity, and the second connecting part is located on the side of the first connecting part opposite to the filling head. The second connecting part can abut against the battery to be tested.

3. The helium detection sealing filling structure as described in claim 1, characterized in that, Both the first connecting part and the second connecting part are cylindrical, and the circumferential diameter of the first connecting part is larger than that of the second connecting part.

4. The helium detection sealing filling structure as described in claim 3, characterized in that, The inner diameter of the accommodating cavity is the same as the outer diameter of the first connecting part.

5. The helium detection sealing filling structure as described in claim 1, characterized in that, The first connecting part has a first slot on the side facing the filling head.

6. The helium detection sealing filling structure as described in claim 1, characterized in that, A second slot is provided inside the filling head, and the second slot is connected to the receiving cavity.

7. The helium detection sealing filling structure as described in claim 1, characterized in that, There are multiple second slots, which are arranged in an array along the outer periphery of the accommodating cavity.

8. The helium detection sealing filling structure as described in claim 1, characterized in that, The side of the filling head facing away from the air inlet has a sealing groove that is adapted to the sealing ring.

9. The helium detection sealing filling structure as described in claim 1, characterized in that, The filling nozzle is made of fluororubber.

10. A helium detection sealing filling structure as described in claim 1, characterized in that, When the filling nozzle is placed into the receiving cavity, the upper part of the filling nozzle abuts against the upper wall of the receiving cavity, and the lower wall of the filling nozzle is 3mm away from the lower wall of the receiving cavity.

Images