Inflation connector

Abstract

The utility model belongs to the technical field of gas injection devices, and particularly relates to a gas charging connector, which comprises a shell, a gas charging connector and a gas charging connector, the flexible gas conveying pipe is arranged in the shell and communicates with the gas inlet; the gas injection shaft is movably arranged at the gas outlet in the Z direction, one end of the gas injection shaft is communicated with the flexible gas conveying pipe, and the other end of the gas injection shaft is provided with a gas injection nozzle used for being connected with a battery gas injection port; the sealing cover is arranged on the outer side of the gas injection shaft in a sleeving mode and used for sealing connection between the gas injection shaft and the shell; the elastic piece is arranged on the gas injection shaft in a sleeving mode and axially abuts against the position between the shell and the sealing cover; the two ends of the flexible gas conveying pipe are further provided with gas pipe joints and communicate with the gas inlet and the gas injection shaft through the gas pipe joints correspondingly. The gas injection device has the advantages that the flexible gas conveying pipe can play a role in flexibly buffering movement of the gas injection shaft in the Z direction, the connection sealing performance between the gas conveying pipe and the gas injection shaft is improved, and the leakage risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas injection devices, and in particular relates to a gas charging joint. Background Art

[0002] At present, in the common battery cell manufacturing process, after the battery top cover is welded, a helium test is required to conduct a leakage test on the welding effect of the battery top cover to prevent poor welding of the battery top cover from affecting subsequent production and manufacturing.

[0003] In the prior art CN219389387U battery cell processing inflation connector, a high vacuum independent main valve and a pressure gauge are connected at one end, and a gas injection nozzle is installed at the bottom for operation. This mechanism has a large defect in sealing performance. After the gas injection mechanism contacts the battery gas injection port, the flexible spring inside the gas injection mechanism shrinks. After reciprocating motion, the gas injection mechanism leaks at the gas injection nozzle connection, thereby affecting the helium test results. Utility Model Content

[0004] The purpose of the utility model is to provide an inflation joint to solve the above-mentioned technical problems, so as to achieve the effect of enhancing the sealing performance of the gas injection device.

[0005] In view of this, the utility model provides an inflatable joint, comprising:

[0006] A shell, wherein the shell is provided with an air inlet and an air outlet;

[0007] A flexible air delivery pipe, the flexible air delivery pipe is arranged in the housing and communicated with the air inlet;

[0008] A gas injection shaft, which is movably arranged at the gas outlet along the Z direction, one end of which is connected to the flexible gas delivery pipe, and the other end of which is provided with a gas injection nozzle for connecting to the battery gas injection port;

[0009] A sealing cover, which is sleeved on the outside of the gas injection shaft and is used for sealing connection between the gas injection shaft and the shell;

[0010] An elastic member, wherein the elastic member is sleeved on the gas injection shaft and axially abuts between the shell and the sealing cover;

[0011] Wherein, air pipe joints are provided on both ends of the flexible air pipe, and the flexible air pipe is connected to the air inlet and the air injection shaft respectively through the air pipe joints.

[0012] Furthermore, the housing comprises:

[0013] A base, wherein a connecting seat is provided on the base, and the air outlet is provided on the connecting seat;

[0014] An upper cover, the upper cover is mounted on the connecting seat, and the air inlet is arranged on the upper cover;

[0015] Wherein, the gas injection axis is arranged to penetrate the base and the connecting seat along the Z direction, and the flexible gas delivery pipe is arranged in the upper cover.

[0016] Furthermore, the upper cover and the connecting seat as well as the base and the connecting seat are connected by fasteners.

[0017] Furthermore, one end of the sealing cover is arranged between the base and the connecting seat, and the other end is connected to the gas injection shaft.

[0018] Furthermore, it also includes a first sealing ring, which is arranged between the base and the sealing cover.

[0019] Furthermore, it also includes a second sealing ring, which is arranged between the connecting seat and the upper cover.

[0020] Furthermore, it also includes an adapter, which is arranged on the air inlet and connected to the flexible air pipe.

[0021] Furthermore, it also includes a third sealing ring, which is arranged between the upper cover and the adapter.

[0022] Furthermore, it also includes a pressure ring, which is arranged between the third sealing ring and the adapter.

[0023] Furthermore, it also includes a fourth sealing ring, which is arranged on the base.

[0024] The beneficial effects of the utility model are:

[0025] The gas injection device movably arranges the gas injection shaft at the gas outlet, one end of the gas injection shaft is used to transport helium to the battery gas injection port, and the other end is connected to a flexible gas delivery pipe, the other end of the flexible gas delivery pipe is connected to the gas inlet of the shell, and then the two ends of the sealing cover are designed to be connected to the gas injection shaft and the gas outlet, so that helium can pass through the gas injection device without leakage. And by setting the flexible gas delivery pipe, it can play a flexible buffering effect on the movement of the gas injection shaft in the Z direction, improve the connection sealing between the gas delivery pipe and the gas injection shaft, and reduce the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a cross-sectional view of the internal structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the connection structure of the flexible gas delivery pipe and the gas injection shaft of the utility model;

[0029] The symbols in the figure are:

[0030] 1. Shell; 11. Air inlet; 12. Air outlet; 13. Base; 14. Connecting seat; 15. Upper cover; 2. Flexible air pipe; 21. Air pipe joint; 3. Air injection shaft; 31. Air injection nozzle; 32. Sealing cover; 33. Elastic member; 4. First sealing ring; 5. Second sealing ring; 6. Adapter; 7. Third sealing ring; 8. Pressing ring; 9. Fourth sealing ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] Embodiment 1:

[0034] This embodiment provides an inflatable joint, comprising:

[0035] A housing 1, wherein the housing 1 is provided with an air inlet 11 and an air outlet 12;

[0036] A flexible air delivery pipe 2, wherein the flexible air delivery pipe 2 is disposed in the housing 1 and communicated with the air inlet 11;

[0037] A gas injection shaft 3, which is movably arranged at the gas outlet 12 along the Z direction, one end of which is connected to the flexible gas delivery pipe 2, and the other end of which is provided with a gas injection nozzle 31 for connecting to the battery gas injection port;

[0038] A sealing cover 32, which is sleeved on the outside of the gas injection shaft 3 and is used for sealing connection between the gas injection shaft 3 and the housing 1;

[0039] An elastic member 33, wherein the elastic member 33 is sleeved on the gas injection shaft 3 and axially abuts between the housing 1 and the sealing cover 32;

[0040] Wherein, air pipe joints 21 are further provided on both ends of the flexible air pipe 2 , and the flexible air pipe 2 is connected to the air inlet 11 and the air injection shaft 3 respectively through the air pipe joints 21 .

[0041] In this technical solution, the air inlet 11 on the shell 1 is connected to the helium delivery mechanism. The helium of the helium delivery mechanism will enter the flexible gas pipe 2 from the air inlet 11, then enter the gas injection shaft 3 through the flexible gas pipe 2, and then be output from the gas injection nozzle 31 of the gas injection shaft 3.

[0042] When the gas injection device is in use, the gas injection nozzle 31 contacts the battery gas injection port, and the battery top cover will apply pressure to the gas injection nozzle 31, pushing the gas injection shaft 3 to move upward along Z, while the elastic member 33 and the sealing cover 32 are compressed, and then the gas injection shaft 3 pushes the flexible gas delivery pipe 2 to be compressed in the shell 1, and then the helium is output from the gas injection nozzle 31 into the battery gas injection port to test the welding sealing of the battery top cover. After the battery helium inspection is completed, the battery gas injection port is separated from the gas injection nozzle 31, and the elastic force generated by the compression of the elastic member 33 will push the gas injection shaft 3 to move downward along Z back to its original position, driving the flexible gas delivery pipe 2 to return to its original state.

[0043] The sealing cover 32 can be a movable corrugated sealing cover 32, and the two ends of the sealing cover 32 are respectively connected to one end of the gas injection shaft 3 provided with the gas injection nozzle 31 and the gas outlet 12 of the shell 1. When the gas injection shaft 3 moves along the Z direction, the sealing cover 32 moves in a telescopic manner along the Z direction, which plays a dynamic sealing effect and prevents helium from leaking from the gas outlet 12. Air pipe joints 21 are provided on both ends of the flexible gas pipe 2. One end of the flexible gas pipe 2 is connected to the gas injection shaft 3 through the air pipe joint 21 to prevent helium from leaking from the connection between the flexible gas pipe 2 and the gas injection shaft 3; the other end of the flexible gas pipe 2 is connected to the gas inlet 11 through the air pipe joint 21 to prevent helium from leaking from the connection between the flexible gas pipe 2 and the gas inlet 11.

[0044] In summary, the gas injection device movably arranges the gas injection shaft 3 at the gas outlet 12, one end of the gas injection shaft 3 is used to transport helium to the battery gas injection port, and the other end is connected to the flexible gas delivery pipe 2, and the other end of the flexible gas delivery pipe 2 is connected to the gas inlet 11 of the shell 1, and then the two ends of the sealing cover 32 are designed to be connected to the gas injection shaft 3 and the gas outlet 12, so that helium can pass through the gas injection device without leakage. And by setting the flexible gas delivery pipe 2, it can play a flexible buffering effect on the movement of the gas injection shaft 3 in the Z direction, improve the connection sealing between the gas delivery pipe and the gas injection shaft 3, and reduce the risk of leakage.

[0045] Embodiment 2:

[0046] This embodiment provides an inflation joint, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0047] Furthermore, the housing 1 comprises:

[0048] A base 13, wherein a connecting seat 14 is disposed on the base 13, and the air outlet 12 is disposed on the connecting seat 14;

[0049] An upper cover 15, wherein the upper cover 15 is mounted on the connecting seat 14, and the air inlet 11 is disposed on the upper cover 15;

[0050] The gas injection shaft 3 is arranged to penetrate the base 13 and the connecting seat 14 along the Z direction, and the flexible gas delivery pipe 2 is arranged in the upper cover 15 .

[0051] In the present technical solution, through the structural design, the shell 1 is divided into three parts: the base 13, the upper cover 15 and the connecting seat 14. The manufacturing and processing of each part are simpler and more flexible, thereby reducing the production cost.

[0052] Furthermore, the upper cover 15 and the connecting seat 14 as well as the base 13 and the connecting seat 14 are connected by fasteners. This structural design makes it easier to install and remove the housing 1, and when the housing 1 is partially damaged, the entire housing 1 does not need to be replaced, which reduces maintenance costs and improves practicality.

[0053] Embodiment 3:

[0054] This embodiment provides an inflation joint, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] Furthermore, one end of the sealing cover 32 is disposed between the base 13 and the connecting seat 14 , and the other end is connected to the gas injection shaft 3 .

[0056] In the present technical solution, one end of the sealing cover 32 can be fixed to the end of the gas injection shaft 3 by bonding, and the other end is located between the base 13 and the connecting seat 14. The base 13 and the connecting seat 14 are connected together by setting fasteners, and the sealing cover 32 is clamped and fixed by the base 13 and the connecting seat 14. Through this structural design, the connection firmness of the sealing cover 32 is enhanced, the connection of the sealing cover 32 is prevented from loosening when the gas injection shaft 3 moves along the Z direction, and the dynamic sealing effect is improved.

[0057] Embodiment 4:

[0058] This embodiment provides an inflation joint, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0059] Furthermore, it also includes a first sealing ring 4 , which is arranged between the base 13 and the sealing cover 32 .

[0060] In the present technical solution, the first sealing ring 4 may be an O-ring, which serves to enhance the sealing performance of the connection between the base 13 and the sealing cover 32 .

[0061] Furthermore, it also includes a second sealing ring 5 , which is arranged between the connecting seat 14 and the upper cover 15 .

[0062] In the present technical solution, the second sealing ring 5 may be an O-ring, which serves to enhance the sealing performance of the connection between the connecting seat 14 and the upper cover 15 .

[0063] In summary, by providing the first sealing ring 4 and the second sealing ring 5, a sealing effect is achieved on the connection between the base 13 and the connecting seat 14 and the connection between the upper cover 15 and the connecting seat 14, thereby enhancing the overall sealing performance of the gas injection device.

[0064] Embodiment 5:

[0065] This embodiment provides an inflation joint, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] Furthermore, it also includes an adapter 6 , which is arranged on the air inlet 11 and connected to the flexible air pipe 2 .

[0067] In the present technical solution, by providing the adapter 6, the connection between the flexible gas pipe 2 and the gas outlet 12 is made more stable, thereby improving the stability of helium delivery.

[0068] Furthermore, a third sealing ring 7 is included, and the third sealing ring 7 is arranged between the upper cover 15 and the adapter 6. The third sealing ring 7 can be an O-ring, and the connection sealing between the upper cover 15 and the adapter 6 is enhanced by arranging the third sealing ring 7.

[0069] Furthermore, it also includes a pressure ring 8, which is arranged between the third sealing ring 7 and the adapter 6. When the adapter 6 is connected to the air inlet 11 of the upper cover 15, the adapter 6 squeezes the pressure ring 8 and pushes the pressure ring 8 close to the third sealing ring 7. The third sealing ring 7 is squeezed by the adapter 6 and the upper cover 15, thereby further improving the connection sealing between the upper cover 15 and the adapter 6.

[0070] Embodiment 6:

[0071] This embodiment provides an inflation joint, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] Furthermore, it also includes a fourth sealing ring 9, which is arranged on the base 13.

[0073] In this technical solution, the base 13 is installed and connected to the helium inspection machine, and the fourth sealing ring 9 is an O-ring. The fourth sealing ring 9 is arranged on the end surface where the base 13 is connected to the machine. Through this structural design, the connection sealing between the base 13 and the helium inspection machine is enhanced.

[0074] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An inflatable joint, characterized in that: include: A housing (1), wherein the housing (1) is provided with an air inlet (11) and an air outlet (12); A flexible air delivery pipe (2), wherein the flexible air delivery pipe (2) is arranged in the housing (1) and is in communication with the air inlet (11); A gas injection shaft (3), the gas injection shaft (3) being movably arranged at the gas outlet (12) along the Z direction, one end of the gas injection shaft (3) being connected to the flexible gas delivery pipe (2), and the other end of the gas injection shaft (3) being provided with a gas injection nozzle (31) for connecting to the gas injection port of the battery; A sealing cover (32), wherein the sealing cover (32) is sleeved on the outside of the gas injection shaft (3) and is used for sealing connection between the gas injection shaft (3) and the housing (1); An elastic member (33), wherein the elastic member (33) is sleeved on the gas injection shaft (3) and axially abuts between the housing (1) and the sealing cover (32); Wherein, air pipe joints (21) are also provided on both ends of the flexible air pipe (2), and the flexible air pipe (2) is respectively connected to the air inlet (11) and the air injection shaft (3) through the air pipe joints (21).

2. An inflatable joint according to claim 1, characterized in that: The housing (1) comprises: A base (13), wherein a connecting seat (14) is provided on the base (13), and the air outlet (12) is provided on the connecting seat (14); An upper cover (15), wherein the upper cover (15) is mounted on the connecting seat (14), and the air inlet (11) is arranged on the upper cover (15); The gas injection shaft (3) is arranged to penetrate the base (13) and the connecting seat (14) along the Z direction, and the flexible gas delivery pipe (2) is arranged in the upper cover (15).

3. An inflatable joint according to claim 2, characterized in that: The upper cover (15) and the connecting seat (14) as well as the base (13) and the connecting seat (14) are connected by fasteners.

4. An inflatable joint according to claim 2, characterized in that: One end of the sealing cover (32) is arranged between the base (13) and the connecting seat (14), and the other end is connected to the gas injection shaft (3).

5. An inflatable joint according to claim 3, characterized in that: It also includes a first sealing ring (4), which is arranged between the base (13) and the sealing cover (32).

6. An inflatable joint according to claim 2, characterized in that: It also includes a second sealing ring (5), which is arranged between the connecting seat (14) and the upper cover (15).

7. An inflatable joint according to claim 2, characterized in that: It also comprises an adapter (6), which is arranged on the air inlet (11) and connected to the flexible air delivery pipe (2).

8. An inflatable joint according to claim 7, characterized in that: It also includes a third sealing ring (7), which is arranged between the upper cover (15) and the adapter (6).

9. An inflatable joint according to claim 7, characterized in that: It also comprises a pressing ring (8), wherein the pressing ring (8) is arranged between the third sealing ring (7) and the adapter (6).

10. An inflatable joint according to claim 2, characterized in that: It also includes a fourth sealing ring (9), wherein the fourth sealing ring (9) is arranged on the base (13).

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