CN221221738U

CN221221738U - Air charging device for airtight detection equipment

Info

Publication number: CN221221738U
Application number: CN202323378072.3U
Authority: CN
Inventors: 陈文骏; 金鑫; 王�锋; 黄高博; 付垚; 丁正兵; 丁琛; 姜鸣; 曹中成; 马俊
Original assignee: SAIC CATL Power Battery System Co Ltd
Current assignee: SAIC CATL Power Battery System Co Ltd
Priority date: 2023-12-12
Filing date: 2023-12-12
Publication date: 2024-06-25
Anticipated expiration: 2033-12-12

Abstract

The application discloses an air charging device for airtight detection equipment, which comprises: casing, protection casing and positioning tube, the protection casing setting is in the inboard of casing to, the inside of protection casing is provided with solid fixed ring, and the annular channel has been seted up in solid fixed ring's outside in the inside of protection casing encircleing, and the inside of annular channel is provided with the air pressure sensor who is used for monitoring the inside atmospheric pressure of casing, and the one end that the outer wall of protection casing is close to the casing is provided with annular journal stirrup, and the terminal surface of annular journal stirrup encircles the outside at the annular channel and is provided with first sealing washer, and first sealing washer hugs closely the inner wall at the casing. The air charging device for the airtight detection equipment can seal the air pressure sensor in the protective cover for protection, avoids the condition that the detection precision of the air pressure sensor is affected due to the interference of dirt formed by dust and water in the air, ensures the precision of the detection result of the air pressure sensor, and has strong practicability.

Description

Air charging device for airtight detection equipment

Technical Field

The utility model relates to the technical field of airtight detection equipment, in particular to an air charging device for the airtight detection equipment.

Background

The battery pack is one kind of lithium ion battery, the line and the connector between the battery cells are deleted, a plurality of battery cells are directly integrated in a unified structure to form a compact module, thus the resistance can be reduced, the performance and the efficiency of the battery pack are improved, and the manufacturing process is simplified, however, in order to prevent the battery cells inside the battery pack from generating short circuit due to air leakage and water seepage, the quality of the battery pack is ensured, when the battery pack is produced, the air tightness of the battery pack is required to be detected by using air tightness detection equipment, and the air tightness detection equipment is equipment capable of meeting the online air tightness detection, waterproof detection and tightness detection equipment of products, and the air tightness test is divided into: the battery pack is sealed in a detection shell of the air tightness detection device, the air tightness detection device is inflated by using an inflation joint, and then the pressure sensor detects the air pressure change in the detection shell to judge whether the battery pack leaks or not.

However, as the pressure sensor is exposed in the detection shell for a long time to contact with air, dust, water and other impurities in the air can adhere to the surface of the detection end of the pressure sensor to form mud, so that the accuracy of the monitoring result of the pressure sensor is affected. Accordingly, one skilled in the art provides an inflator for an airtight detection apparatus to solve the problems set forth in the background art described above.

Disclosure of utility model

The present utility model is directed to an inflator for an airtight detecting device, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

An inflator for an airtight detecting apparatus, comprising: the utility model provides a casing, protection casing and positioning tube, the protection casing sets up the inboard at the casing, and, the inside of protection casing is provided with solid fixed ring, the annular channel has been seted up in the outside of solid fixed ring in the inside of protection casing encircleing, the inside of annular channel is provided with the air pressure sensor who is used for monitoring the inside atmospheric pressure of casing, and the one end that the outer wall of protection casing is close to the casing is provided with annular journal stirrup, the terminal surface of annular journal stirrup encircles the outside at the annular channel and is provided with first sealing washer, first sealing washer hugs closely the inner wall at the casing, the positioning tube sets up the outside at the casing, and, the positioning tube runs through in the casing and screw thread installation in the inside of solid fixed ring, the one end that the positioning tube is located solid fixed ring is inlayed and is equipped with the inflation joint, the inflation joint runs through in the protection casing and extends to its outside, and the one end screw thread installation regulating plate that the positioning tube is located the casing outside is provided with limit baffle, limit baffle suit is at the outer wall of positioning tube, and the inside of positioning tube is provided with the regulating plate, the inboard part of limit baffle, the inboard of limit baffle encircles the outside at the outside of positioning tube is provided with a plurality of limit baffle, the one end of keeping away from limit baffle runs through in the regulating plate and installs at the outer wall of casing, and the outside of the setting between the setting up the limit air pipe and the limit spring.

Preferably, the inside of solid fixed ring has offered the screw thread groove, and the inside at the screw thread groove is installed to the positioning tube screw thread to, the outer wall of positioning tube is located the inboard one end of casing and is provided with annular limiting plate, and annular limiting plate extends to the inside of protection casing and hugs closely at gu the terminal surface of solid fixed ring, and annular limiting plate and annular journal stirrup are close to the terminal surface looks parallel and level of one end of casing.

Preferably, one end of the outer wall of the protective cover, which is far away from the shell, surrounds the outer part of the air charging connector, and a second sealing ring is arranged, and one end of the second sealing ring, which is far away from the protective cover, is clung to the outer wall of the battery pack.

Preferably, the inside of the shell is provided with a through hole, the positioning cylinder penetrates through the through hole and extends to the inside of the positioning cylinder, the end face area of the annular limiting plate is larger than the opening area of the through hole, and one end, far away from the protective cover, of the annular limiting plate is covered on the inner side of the through hole.

Preferably, the outer wall of the adjusting plate is close to one end of the shell and surrounds the outside of the positioning cylinder, a third sealing ring is arranged on the end face of the sealing ring, and the third sealing ring is clung to the outer wall of the shell and surrounds the outside of the through hole.

Preferably, the outer wall of the adjusting plate is uniformly provided with a plurality of sliding holes, and the adjusting plate is slidably arranged on the outer wall of the sliding rod through the sliding holes.

Preferably, the first sealing ring, the second sealing ring and the third sealing ring are all made of rubber.

Compared with the prior art, the utility model has the advantages that:

through set up protection casing and fixed section of thick bamboo on the casing, when the battery package of installing inside the casing is inflated, can directly press the location section of thick bamboo, let the location section of thick bamboo remove and drive the inflation joint of installing on the location section of thick bamboo to the casing and carry out the displacement, it is inflated to connect the inflation joint on the battery package, the regulating plate of installing its outside is driven by the location section of thick bamboo in moving carries out the displacement, can let the sealing ring of installing in the regulating plate inboard compress tightly the third sealing washer on the casing and seal the through-hole, prevent that the air in the casing from revealing from the through-hole, the leakproofness of casing has been guaranteed, simultaneously, drive the protection casing displacement above that by the location section of thick bamboo that moves again, let the protection casing break away from the inner wall of casing, expose the air pressure sensor who installs inside the protection casing, detect the atmospheric pressure of casing by air pressure sensor, can adjust air pressure sensor's position when using, let air pressure sensor and the air contact in the casing, detect the inside air pressure's of casing change of air pressure and judge whether the inside entering battery package reveal, the use of gas in the gas tightness check out equipment has been guaranteed.

After the air tightness detection of the battery pack is finished, the positioning ring can be screwed, the positioning ring is separated from the limit baffle, the adjusting plate is restored to the original position under the action of spring force and drives the positioning cylinder to slide in the through hole, the annular limit plate is clung to the inner wall of the shell and covers the through hole to seal the through hole, external air is prevented from entering the protective cover from the through hole to be contacted with the air pressure sensor, meanwhile, the annular support lugs on the protective cover compress the first sealing ring on the inner wall of the shell, air in the shell is prevented from entering the protective cover from a gap between the annular support lugs and the inner wall of the shell to be contacted with the air pressure sensor, the air pressure sensor can be sealed in the protective cover to be protected, the condition that the detection accuracy of the air pressure sensor is influenced due to the interference of dust and water in the air is avoided, the accuracy of the detection result of the air pressure sensor is ensured, and the practicability is strong.

Drawings

FIG. 1 is a schematic view showing the structure of an inflator for an airtight detecting apparatus according to an embodiment of the present utility model;

FIG. 2 is a perspective view of a positioning barrel according to an embodiment of the utility model;

FIG. 3 is a schematic perspective view of a protective cover according to an embodiment of the utility model;

Fig. 4 is a schematic view of an assembly of a positioning cartridge and a shield according to an embodiment of the present utility model.

In the figure: 1. a housing; 101. a through hole; 11. a limit baffle; 12. a slide bar; 13. a spring; 2. a protective cover; 201. an annular groove; 21. a fixing ring; 211. a thread groove; 22. an air pressure sensor; 23. annular lugs; 24. a first seal ring; 25. a second seal ring; 3. a positioning cylinder; 31. an inflation joint; 32. an annular limiting plate; 33. an adjusting plate; 331. a seal ring; 332. a third seal ring; 333. a slide hole; 34. a positioning ring; 35. and an air pipe.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "include" and any variations thereof are intended to cover a non-exclusive inclusion.

As shown in fig. 1, 2, 3 and 4, the shield 2 is disposed inside the housing 1, and the inside of the shield 2 is provided with a fixing ring 21, the inside of the shield 2 is surrounded outside the fixing ring 21 and provided with an annular groove 201, the inside of the annular groove 201 is provided with an air pressure sensor 22 for monitoring the air pressure inside the housing 1, and one end of the outer wall of the shield 2 close to the housing 1 is provided with an annular support lug 23, the end surface of the annular support lug 23 is surrounded outside the annular groove 201 and provided with a first sealing ring 24, the first sealing ring 24 is tightly attached to the inner wall of the housing 1, the positioning cylinder 3 is disposed outside the housing 1, and the positioning cylinder 3 penetrates through the housing 1 and is threadedly mounted inside the fixing ring 21, one end of the positioning cylinder 3 located inside the fixing ring 21 is embedded with an air inflation connector 31, the air inflation connector 31 penetrates through the shield 2 and extends to the outside thereof, the outer wall of the protective cover 2 is provided with a second sealing ring 25 which surrounds the outside of the air charging connector 31 at the end far away from the shell 1, the end of the second sealing ring 25 far away from the protective cover 2 is clung to the outer wall of the battery pack, one end of the positioning cylinder 3 positioned at the outer side of the shell 1 is provided with an adjusting plate 33 in a threaded manner, the outer side of the shell 1 is provided with a limit baffle 11, the limit baffle 11 is sleeved on the outer wall of the positioning cylinder 3, the part of the outer wall of the positioning cylinder 3 positioned at the inner side of the limit baffle 11 is provided with an adjusting plate 33, the inner side of the limit baffle 11 surrounds the outer side of the positioning cylinder 3 and is uniformly provided with a plurality of sliding rods 12, one end of the sliding rods 12 far away from the limit baffle 11 penetrates through the adjusting plate 33 and is arranged on the outer wall of the shell 1, the outer wall of the sliding rods 12 is positioned between the shell 1 and the adjusting plate 33, the outer wall of the adjusting plate 33 is close to one end of the shell 1 and surrounds the outer side of the positioning cylinder 3 and is provided with a sealing ring 331, the terminal surface of sealing ring 331 is provided with third sealing washer 332, and third sealing washer 332 hugs closely at the outer wall of casing 1 and encircles the outside at through-hole 101, and the outer wall of positioning cylinder 3 is located and is provided with locating ring 34 between regulating plate 33 and limit baffle 11, and locating ring 34 hugs closely in limit baffle 11's inboard, and the one end that positioning cylinder 3 is located the limit baffle 11 outside is provided with and is used for inflatable trachea 35.

In one embodiment, when the protection cover 2 and the positioning cylinder 3 are installed, the positioning cylinder 3 is installed inside the fixed ring 21 through the thread groove 211, the air inflation connector 31 installed on the positioning cylinder 3 extends to the outside of the protection cover 2, then the annular limiting plate 32 limits the positioning cylinder 3 installed on the fixed ring 21, limits the length of the air inflation connector 31 extending to the outside of the protection cover 2, then the sliding hole 333 slides the adjusting plate 33 on the sliding rod 12 to adjust the position of the adjusting plate 33, the positioning cylinder 3 extends to the outside of the casing 1 at the position of the through hole 101, the annular supporting lug 23 on the protection cover 2 tightly presses the first sealing ring 24 on the inner wall of the casing 1, the positioning cylinder 3 is screwed inside the adjusting plate 33, finally the positioning ring 34 is screwed, the positioning ring 34 is screwed on the positioning cylinder 3, the positioning ring 34 is tightly attached to the inner side of the limiting baffle 11, and the installation of the protection cover 2 and the positioning cylinder 3 can be completed.

In one embodiment, when the battery pack is not inflated, the adjusting plate 33 can slide the outer wall of the slide rod 12 through the slide hole 333 under the action of the elastic force of the spring 13, then the adjusting plate 33 sliding on the slide rod 12 pulls the positioning cylinder 3 to slide towards the outside of the shell 1 in the through hole 101, the annular limiting plate 32 is tightly attached to the inner wall of the shell 1 and covers the through hole 101 to seal the through hole, so that external air is prevented from entering the protective cover 2 from the through hole 101 to contact with the air pressure sensor 22, the protective cover 2 is pulled by the moving positioning cylinder 3 to displace, the protective cover 2 is tightly attached to the inner wall of the shell 1, then the annular supporting lugs 23 on the protective cover 2 compress the first sealing ring 24 on the inner wall of the shell 1, so that air in the shell 1 is prevented from entering the protective cover 2 from contacting with the air pressure sensor 22 from a gap between the annular supporting lugs 23 and the inner wall of the shell 1, the air pressure sensor 22 can be protected from being sealed in the protective cover 2, the condition that the detection precision is influenced by the interference of dirt formed by the air pressure sensor 22 and water in the air is prevented, and the practical result of checking the air pressure is ensured.

In one embodiment, when the battery pack is inflated, the positioning cylinder 3 can be directly pressed, so that the positioning cylinder 3 moves from the through hole 101 to the inside of the shell 1, and the inflation connector 31 arranged on the positioning cylinder 3 is driven to displace, the inflation connector 31 is inserted on the battery pack to inflate the battery pack, the protective cover 2 presses the second sealing ring 25 on the outer wall of the battery pack, the inflation port of the battery pack is sealed, the gas leakage in the battery pack is prevented, the moving positioning cylinder 3 drives the adjusting plate 33 arranged outside the battery pack to displace, the sealing ring 331 arranged on the inner side of the adjusting plate 33 presses the third sealing ring 332 on the shell 1 to seal the through hole 101, the air in the shell 1 is prevented from leaking from the through hole 101, the tightness of the shell 1 is ensured, and meanwhile, the moving positioning cylinder 3 drives the protective cover 2 mounted on the protective cover to displace, the protective cover 2 is separated from the inner wall of the shell 1, the air pressure sensor 22 mounted in the annular groove 201 in the protective cover 2 is exposed, finally, the positioning ring 34 is screwed, the position of the positioning ring 34 is adjusted, the positioning ring 34 is tightly attached to the inner side of the limiting baffle 11, the protective cover 2 and the positioning cylinder 3 after the position adjustment can be limited, the inflation connector 31 is prevented from separating from a battery pack, the inflation work of the battery pack is ensured, the position of the air pressure sensor 22 can be adjusted when the battery pack is used, the air pressure sensor 22 is in contact with air in the shell 1, and whether the air entering the battery pack leaks or not is judged by detecting the change of the air pressure in the shell 1 through the air pressure sensor 22, and the use of the air tightness detection equipment is ensured.

The working principle of the utility model is as follows: when the air tightness detection is carried out on the battery pack, the battery pack is sealed in the shell 1, the positioning cylinder 3 is pressed, the positioning cylinder 3 moves from the through hole 101 to the inside of the shell 1, the inflation connector 31 arranged on the positioning cylinder 3 is driven to displace, the inflation connector 31 is inserted on the battery pack to inflate the battery pack, the protective cover 2 compresses the second sealing ring 25 on the outer wall of the battery pack, the inflation port of the battery pack is sealed, the gas in the battery pack is prevented from leaking, the moving positioning cylinder 3 drives the adjusting plate 33 arranged outside the battery pack to displace, the sealing ring 331 arranged on the inner side of the adjusting plate 33 compresses the third sealing ring 332 on the shell 1 to seal the through hole 101, the air in the shell 1 is prevented from leaking from the through hole 101, the tightness of the shell 1 is ensured, and simultaneously, the moving positioning cylinder 3 drives the protective cover 2 mounted on the protective cover to move, the protective cover 2 is separated from the inner wall of the shell 1, the air pressure sensor 22 mounted in the annular groove 201 in the protective cover 2 is exposed, finally, the positioning ring 34 is screwed, the position of the positioning ring 34 is adjusted, the positioning ring 34 is tightly attached to the inner side of the limiting baffle 11, the protective cover 2 and the positioning cylinder 3 after the adjustment can be limited, the inflation joint 31 is prevented from separating from the battery pack, the inflation work of the battery pack is ensured, the position of the protective cover 2 is adjusted, the air pressure sensor 22 mounted in the protective cover 2 is contacted with the air in the shell 1, the change of the air pressure in the shell 1 is detected by the air pressure sensor 22 to judge whether the air entering the battery pack leaks, the use of the air tightness detection device is ensured, and after the inflation of the battery pack is finished, the adjusting plate 33 slides the outer wall of the slide bar 12 through the sliding hole 333 under the elastic force of the spring 13, then the adjusting plate 33 sliding on the slide bar 12 pulls the positioning cylinder 3 to slide outside the shell 1 in the through hole 101, the annular limiting plate 32 is tightly attached to the inner wall of the shell 1 and covers the through hole 101 to seal the through hole, external air is prevented from entering the protective cover 2 from the through hole 101 to be contacted with the air pressure sensor 22, the protective cover 2 is pulled by the moving positioning cylinder 3 to displace, the protective cover 2 is tightly attached to the inner wall of the shell 1, the annular supporting lugs 23 on the protective cover 2 tightly press the first sealing ring 24 on the inner wall of the shell 1, the air in the shell 1 is prevented from entering the protective cover 2 from a gap between the annular supporting lugs 23 and the inner wall of the shell 1 to be contacted with the air pressure sensor 22, the air pressure sensor 22 can be sealed in the protective cover 2 to be protected, the condition that the detection accuracy of the air pressure sensor 22 is influenced due to the interference of dust and water in the air is avoided, and the accuracy of the detection result of the air pressure sensor 22 is ensured.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. An inflator for an airtight detecting apparatus, comprising: the air inflation device is characterized in that the protection cover (2) is arranged on the inner side of the shell (1), a fixed ring (21) is arranged in the protection cover (2), an annular groove (201) is formed in the outer side of the fixed ring (21) in a surrounding mode in the protection cover (2), an air pressure sensor (22) used for monitoring the air pressure in the shell (1) is arranged in the annular groove (201), an annular lug (23) is arranged at one end, close to the shell (1), of the outer wall of the protection cover (2), a first sealing ring (24) is arranged on the outer side of the annular groove (201) in a surrounding mode, of the end face of the annular lug (23), the first sealing ring (24) is tightly attached to the inner wall of the shell (1), the positioning cylinder (3) is arranged on the outer side of the shell (1), the positioning cylinder (3) penetrates through the shell (1) and is arranged in the inner side of the fixed ring (21) in a threaded mode, the positioning cylinder (3) is located at one end, close to the inner side of the fixed ring (21), embedded joint (31) extends to the outer end of the inflatable connector (31), and locating cylinder (3) are located one end screw thread in the casing (1) outside installs regulating plate (33), the outside of casing (1) is provided with limit baffle (11), limit baffle (11) suit is in the outer wall of locating cylinder (3), and, the outer wall of locating cylinder (3) is located the inboard part of limit baffle (11) is provided with regulating plate (33), the inboard of limit baffle (11) encircles the outside of locating cylinder (3) is even be provided with a plurality of slide bar (12), the one end that slide bar (12) kept away from limit baffle (11) runs through in regulating plate (33) and installs the outer wall of casing (1), just the outer wall of slide bar (12) is located between casing (1) with be provided with spring (13) between limit baffle (33), the outer wall of locating cylinder (3) is located be provided with between regulating plate (33) and limit baffle (11), locating ring (34) are hugged closely limit baffle (11) the outside is located one end (35) of locating cylinder (11) is used for inflating.

2. The air charging device for the airtight detection equipment according to claim 1, wherein a thread groove (211) is formed in the fixing ring (21), the positioning cylinder (3) is installed in the thread groove (211) in a threaded mode, an annular limiting plate (32) is arranged at one end, located on the inner side of the shell (1), of the outer wall of the positioning cylinder (3), the annular limiting plate (32) extends to the inner side of the protective cover (2) and is clung to the end face of the fixing ring (21), and the annular limiting plate (32) is flush with the end face, close to one end of the shell (1), of the annular supporting lug (23).

3. The air charging device for the airtight detection equipment according to claim 2, wherein a second sealing ring (25) is arranged outside the air charging connector (31) in a surrounding manner at one end, far away from the shell (1), of the outer wall of the protective cover (2), and one end, far away from the protective cover (2), of the second sealing ring (25) is tightly attached to the outer wall of the battery pack.

4. An air charging device for an airtight detecting apparatus according to claim 3, wherein a through hole (101) is provided in the interior of the housing (1), the positioning cylinder (3) extends through the through hole (101) to the interior thereof, and the end surface area of the annular limiting plate (32) is larger than the opening area of the through hole (101), and the end of the annular limiting plate (32) away from the protective cover (2) is covered on the inner side of the through hole (101).

5. The air charging device for the airtight detection apparatus according to claim 4, wherein the outer wall of the adjusting plate (33) is close to one end of the housing (1) and surrounds the outside of the positioning cylinder (3), a sealing ring (331) is provided, a third sealing ring (332) is provided on the end face of the sealing ring (331), and the third sealing ring (332) is tightly attached to the outer wall of the housing (1) and surrounds the outside of the through hole (101).

6. The air charging device for the airtight detection equipment according to claim 1, wherein a plurality of sliding holes (333) are uniformly formed in the outer wall of the adjusting plate (33), and the adjusting plate (33) is slidably mounted on the outer wall of the sliding rod (12) through the sliding holes (333).

7. The inflator for a gas tightness detection device according to claim 5, wherein the materials of the first seal ring (24), the second seal ring (25) and the third seal ring (332) are rubber.