CN215178435U - Helium injection device - Google Patents
Helium injection device Download PDFInfo
- Publication number
- CN215178435U CN215178435U CN202121207436.XU CN202121207436U CN215178435U CN 215178435 U CN215178435 U CN 215178435U CN 202121207436 U CN202121207436 U CN 202121207436U CN 215178435 U CN215178435 U CN 215178435U
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- CN
- China
- Prior art keywords
- helium injection
- helium
- sealing
- cavity
- battery
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- 229910052734 helium Inorganic materials 0.000 title claims abstract description 144
- 239000001307 helium Substances 0.000 title claims abstract description 144
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 238000002347 injection Methods 0.000 title claims abstract description 114
- 239000007924 injection Substances 0.000 title claims abstract description 114
- 238000007789 sealing Methods 0.000 claims abstract description 63
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 210000001503 joint Anatomy 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a annotate helium device belongs to leakproofness detection technical field, annotates the higher problem design of helium cost for solving that device overall structure is complicated, bellows seal. The utility model discloses a: the device comprises a cavity, an inner cavity, a sealing groove, a vacuum pipeline and a helium injection mechanism; annotate helium mechanism includes the benchmark board, the seal groove is equipped with first sealing washer, seal groove and first sealing washer cooperate and are used for realizing the cavity with the butt joint of going up the benchmark board is sealed, provides sealed detection environment for helium leak hunting. The utility model discloses reducible helium device's of annotating complexity practices thrift the cost.
Description
Technical Field
The utility model relates to a leakproofness detects technical field, especially about annotating the helium device.
Background
The sealing performance of the lithium ion battery shell has great influence on the safety performance of the battery, and poor sealing can cause safety accidents such as fire, bulging and the like; in the production process of the lithium ion battery, the tightness detection is an important process.
The existing common tightness detection method is a helium leak detection method, a battery is placed in a sealed cavity, a certain amount of helium is filled into the battery through a helium filling mechanism, the cavity is vacuumized to be below 40Pa, and a helium mass spectrometer leak detector is adopted to detect the leakage amount of the helium in the cavity so as to judge the tightness of the battery. Therefore, on the premise of ensuring the sealing of the cavity, the helium is injected into the interior of the battery in the cavity.
In the automatic production process, the number of helium injection mechanisms is large, the existing device is complex in overall structure and high in cost of helium injection through bellows sealing, and the cost of automatic production of lithium batteries is increased.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a helium injection device for reducing the structural cost and the cost of the helium injection mechanism.
In order to achieve the above object, the utility model provides a helium injection device, include:
the device comprises a cavity, an inner cavity, a sealing groove, a vacuum pipeline and a helium injection mechanism;
annotate helium mechanism includes the benchmark board, the seal groove is equipped with first sealing washer, seal groove and first sealing washer cooperate and are used for realizing the cavity with the butt joint of going up the benchmark board is sealed, provides sealed detection environment for helium leak hunting.
Optionally, the cavity is used for placing a battery.
The inner cavity has a positioning function on the battery so as to ensure that a battery liquid injection port is aligned with the helium injection mechanism;
the vacuum pipeline is used for vacuumizing the cavity and providing a vacuum environment for helium leakage detection of the battery, the vacuum pipeline is connected with a helium detector, and when the vacuum degree of the cavity reaches below 40Pa, the helium detector is used for detecting the content of helium in the cavity.
Optionally, the helium injection mechanism includes a second sealing ring and a sealing cylinder, where the second sealing ring is used to make the upper reference plate and the sealing cylinder butt-sealed, so as to ensure the sealing performance of the test cavity.
Optionally, the helium injection mechanism comprises a helium injection nozzle, and the helium injection nozzle is made by rubber mold opening and is used for realizing butt joint sealing of the helium injection mechanism and the battery.
Optionally, the helium injection mechanism includes a helium injection nozzle pressing sheet and a helium injection rod, the helium injection nozzle pressing sheet is used for pressing the helium injection nozzle into a groove of the helium injection rod, and the helium injection nozzle and the groove of the helium injection rod are fixed by a second screw, so that the helium injection nozzle is prevented from falling out when the cavity is vacuumized;
the helium injection rod is used for communicating a helium pipeline with the helium injection nozzle.
Optionally, the helium injection mechanism comprises a spring support plate, a compression spring and a spring sleeve, when the cavity and the upper reference plate are in butt seal, the helium injection nozzle is jacked up by the battery, and after the compression spring is compressed to generate a counterforce to cause the helium injection nozzle to be deformed under pressure, the helium injection nozzle is in butt seal with the upper top surface of the battery;
when the helium injection rod moves upwards, the helium injection rod drives the spring supporting plate to upwards press and compress the spring;
the spring sleeve is used for fixing the spring inside the spring sleeve.
Optionally, the helium injection mechanism comprises a first screw for fixing the spring sleeve to the sealing cylinder.
Optionally, the helium injection mechanism includes a helium injection rod locking plate and a third sealing ring, the helium injection rod is provided with an external thread, the helium injection rod locking plate is locked by a nut, and a pre-compression amount is formed on the compression spring;
when the cavity moves downwards, the battery also moves downwards under the action of gravity, and the helium injection rod is fixed by a helium injection rod locking plate and cannot be separated from the sealing cylinder and the spring sleeve;
when the helium injection rod moves up and down in the sealing cylinder, the third sealing ring can ensure the sealing property inside the cavity, and the third sealing ring plays a role in dynamic sealing.
The utility model has the advantages that: the sealing groove is provided with a first sealing ring, the sealing groove and the first sealing ring are matched to realize butt sealing of the cavity and the upper reference plate, a sealing detection environment is provided for helium leakage detection, complexity of a helium filling device can be reduced by the structure, and cost is saved.
Drawings
FIG. 1 is a schematic view of a cross section of the main viewing direction of the present invention;
fig. 2 is a schematic view of the present invention showing a part of the position C.
Detailed Description
In the description of the present invention, the directions or positional relationships indicated are the directions or positional relationships shown on the drawings, and are only for convenience of description and simplification of description, and it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, unless expressly stated or limited otherwise, the term "connected" is to be understood in a broad sense, e.g. fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 and 2, in an embodiment of the present invention, a chamber 1, an inner cavity 2, a sealing groove 3, a vacuum pipe 4 and a helium injection mechanism 5;
Referring to fig. 1 and 2, in another embodiment of the present invention, a cavity 1 is used for placing a battery 6;
the inner cavity 2 has a positioning function on the battery 6 so as to ensure that a battery liquid injection port is aligned with the helium injection mechanism 5;
the vacuum pipeline 4 is used for vacuumizing the cavity 1 and providing a vacuum environment for helium leakage detection of the battery 6, the vacuum pipeline 4 is connected with a helium detector, and when the vacuum degree of the cavity 1 reaches below 40Pa, the helium detector is used for detecting the content of helium in the cavity 1;
the helium injection mechanism 5 comprises a second sealing ring 11 and a sealing cylinder 18, wherein the second sealing ring 11 is used for enabling the upper reference plate 10 and the sealing cylinder 18 to be in butt joint sealing, so that the sealing performance of the testing cavity is ensured;
the helium injection mechanism 5 comprises a helium injection nozzle 8, and the helium injection nozzle 8 is made by rubber mold opening and is used for realizing butt joint sealing of the helium injection mechanism 5 and the battery 6;
the helium injection mechanism 5 comprises a helium injection nozzle pressing sheet 7 and a helium injection rod 9, wherein the helium injection nozzle pressing sheet 7 is used for pressing a helium injection nozzle 8 into a groove of the helium injection rod 9, and the helium injection nozzle 8 and the groove of the helium injection rod 9 are fixed through a second screw so as to prevent the helium injection nozzle 8 from falling out when the cavity 1 is vacuumized;
the helium injection rod 9 is used for communicating a helium pipeline with the helium injection nozzle 8;
the helium injection mechanism 5 comprises a spring support plate 12, a compression spring 19 and a spring sleeve 13, when the cavity 1 and the upper reference plate 10 are in butt joint sealing, the helium injection nozzle 8 is jacked up by the battery 6, and after the compression spring 19 is compressed to generate a counterforce to cause the helium injection nozzle 8 to be pressed and deformed, the helium injection nozzle 8 is in butt joint sealing with the upper top surface of the battery 6;
when the helium injection rod 9 moves upwards, the helium injection rod 9 drives the spring support plate 12 to press the spring 19 upwards;
the spring sleeve 13 is used for fixing the spring 19 inside the spring sleeve 13;
the helium injection mechanism 5 comprises a first screw 14, and the first screw 14 is used for fixing the spring sleeve 13 on the sealing cylinder 18.
The helium injection mechanism 5 comprises a helium injection rod locking plate 16 and a third sealing ring 17, wherein the helium injection rod 9 is provided with an external thread, and the helium injection rod locking plate 16 is locked through a nut to form a precompression amount for a compression spring 19;
when the cavity 1 moves downwards, the battery 6 also moves downwards due to the action of gravity, and the helium injection rod 9 is fixed by a helium injection rod locking plate 16 and cannot be separated from the sealing cylinder 18 and the spring sleeve 13;
when the helium injection rod 9 moves up and down in the sealing cylinder 18, the third sealing ring 17 can ensure the sealing performance inside the cavity 1, and the third sealing ring 17 plays a role in dynamic sealing.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. A helium injection device is characterized by comprising a cavity 1, an inner cavity 2, a sealing groove 3, a vacuum pipeline 4 and a helium injection mechanism 5;
annotate helium mechanism 5 includes last benchmark board 10, seal groove 3 is equipped with first sealing washer, seal groove 3 and first sealing washer cooperate and are used for realizing cavity 1 with the butt joint of last benchmark board 10 is sealed.
2. A helium injection device as claimed in claim 1, wherein a battery 6 is placed in said chamber 1.
3. A helium injection device as claimed in claim 2, wherein said internal cavity 2 is used for positioning said battery 6 to ensure that the battery filling port is aligned with said helium injection mechanism 5;
the vacuum pipeline 4 is used for vacuumizing the cavity 1 and providing a vacuum environment for helium leakage detection of the battery 6, and the vacuum pipeline 4 is connected with a helium detector.
4. A helium injection apparatus as claimed in claim 3, wherein said helium injection mechanism 5 comprises a second seal ring 11 and a seal cylinder 18, said second seal ring 11 being used for butt sealing said upper reference plate 10 and said seal cylinder 18.
5. The helium injection device as claimed in claim 4, wherein the helium injection mechanism 5 comprises a helium injection nozzle 8, and the helium injection nozzle 8 is made of rubber mold opening for realizing butt sealing of the helium injection mechanism 5 and the battery 6.
6. The helium injection device according to claim 5, wherein the helium injection mechanism 5 comprises a helium injection nozzle pressing sheet 7 and a helium injection rod 9, the helium injection nozzle pressing sheet 7 is used for pressing the helium injection nozzle 8 into a groove of the helium injection rod 9, and the helium injection nozzle 8 and the groove of the helium injection rod 9 are fixed through a second screw;
the helium injection rod 9 is used for communicating a helium pipeline with the helium injection nozzle 8.
7. The helium injection device as claimed in claim 6, wherein the helium injection mechanism 5 comprises a spring support plate 12, a compression spring 19 and a spring sleeve 13, when the cavity 1 and the upper reference plate 10 are sealed in butt joint, the helium injection nozzle 8 is jacked up by the battery 6, the compression spring 19 is compressed to generate a reaction force, and after the helium injection nozzle 8 is deformed in a pressing way, the helium injection nozzle 8 is sealed in butt joint with the upper top surface of the battery 6;
when the helium injection rod 9 moves upwards, the helium injection rod 9 drives the spring support plate 12 to press and compress the spring 19 upwards;
the spring sleeve 13 serves to fix the spring 19 inside the spring sleeve 13.
8. The helium injection apparatus as claimed in claim 7, wherein said helium injection mechanism 5 comprises a first screw 14, said first screw 14 being used to fix said spring sleeve 13 to said sealing cylinder 18.
9. The helium injection device as claimed in claim 8, wherein the helium injection mechanism 5 comprises a helium injection rod locking plate 16 and a third sealing ring 17, the helium injection rod 9 is provided with an external thread, and the helium injection rod locking plate 16 is locked by a nut to form a pre-compression amount for the compression spring 19;
when the cavity 1 moves downwards, the battery 6 also moves downwards due to the action of gravity, and the helium injection rod 9 is fixed by a helium injection rod locking plate 16 and cannot be separated from the sealing cylinder 18 and the spring sleeve 13;
when the helium injection rod 9 moves up and down in the sealing cylinder 18, the third sealing ring 17 can ensure the sealing performance inside the cavity 1, and the third sealing ring 17 plays a role in dynamic sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121207436.XU CN215178435U (en) | 2021-06-01 | 2021-06-01 | Helium injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121207436.XU CN215178435U (en) | 2021-06-01 | 2021-06-01 | Helium injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215178435U true CN215178435U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121207436.XU Active CN215178435U (en) | 2021-06-01 | 2021-06-01 | Helium injection device |
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| CN (1) | CN215178435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115791027A (en) * | 2022-12-28 | 2023-03-14 | 中山市宏唯自动化科技有限公司 | Cylindrical battery leakage detection tool |
-
2021
- 2021-06-01 CN CN202121207436.XU patent/CN215178435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115791027A (en) * | 2022-12-28 | 2023-03-14 | 中山市宏唯自动化科技有限公司 | Cylindrical battery leakage detection tool |
| CN115791027B (en) * | 2022-12-28 | 2023-10-20 | 中山市宏唯自动化科技有限公司 | Cylinder battery leak hunting frock |
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