CN210513576U - Explosion-proof piece gas tightness test fixture - Google Patents
Explosion-proof piece gas tightness test fixture Download PDFInfo
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- CN210513576U CN210513576U CN201921020429.1U CN201921020429U CN210513576U CN 210513576 U CN210513576 U CN 210513576U CN 201921020429 U CN201921020429 U CN 201921020429U CN 210513576 U CN210513576 U CN 210513576U
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Abstract
The utility model discloses an explosion-proof piece gas tightness test fixture. The tool comprises a pressing mechanism and a sealing gasket, wherein an air vent is machined in a groove of the sealing gasket, the position of the air vent is consistent with that of an explosion-proof sheet, and the welded explosion-proof sheet is completely positioned in a hole of the air vent. The bottom plate of the pressing mechanism is provided with a groove corresponding to the shape and the size of the sealing gasket, and the bottom of the groove is provided with an air inlet hole consistent with the position of the vent hole. During testing, the sealing gasket is placed in the groove, the cover plate is placed on the sealing gasket and sealed by the pressing mechanism, and test gas is introduced from the gas inlet hole to quickly test whether the explosion-proof sheet leaks gas or not. The gas tightness testing tool is simple in structure, capable of rapidly testing the welding quality of the explosion-proof piece and also capable of testing the explosion pressure of the explosion-proof piece, high in testing efficiency and reliable in data.
Description
Technical Field
The utility model discloses be applied to the new forms of energy battery field, concretely relates to welding explosion-proof piece gas tightness test fixture on battery apron.
Background
With the development of national science and technology and the progress of technology, new energy batteries have become a main research and development direction in the field of new energy. Among new energy batteries, lithium titanate batteries have high charge and discharge speed, can adapt to high-temperature and low-temperature environments, have high safety in the use process, and have become the main battery type selection in the new energy traffic field. However, lithium titanate batteries also have their own drawbacks, such as internal swelling easily occurring during use, deformation of the batteries caused by high pressure, and reduced battery usability. Generally, a hole is formed in the battery cover plate, and an explosion-proof sheet is welded. In order to ensure the welding quality, the airtightness test is required after the explosion-proof sheet is welded. However, the battery cover has a complicated structure, as shown in fig. 1, the airtightness test is difficult to ensure, and the result of the airtightness test is inaccurate, so that a special pressure test tool must be adopted.
Disclosure of Invention
The utility model provides a technical problem be: the utility model provides an explosion-proof piece gas tightness test fixture for explosion-proof piece welding quality obtains quick reliable test.
The utility model adopts the technical proposal that: explosion-proof piece gas tightness test fixture includes pushing down mechanism and sealed the pad, sealed pad is the trough-shaped structure corresponding with the apron shape of welding explosion-proof piece, and at the inslot, processing has support column and air vent, the position of support column is unanimous with the liquid injection hole position on the apron, the position of air vent is unanimous with explosion-proof piece position on the apron, and welded explosion-proof piece is whole to be located the downthehole of air vent. The pressing mechanism comprises an air cylinder, a guide post, a top plate, a working plate, a pressure rod, a side plate and a bottom plate, a groove corresponding to the shape and the size of the sealing gasket is processed on the bottom plate, an air inlet hole is processed at the bottom of the groove, the position of the air inlet hole is consistent with that of the air vent and keeps good sealing performance with the sealing gasket, and the air inlet hole is connected with high-pressure gas for air tightness testing. The side plates are welded and fixed on two sides of the bottom plate, the top plate is welded and fixed on the top of the side plates, the air cylinder is fixedly installed in the middle of the top plate, positioning holes are machined in two sides of the top plate, the guide post is installed in the positioning hole, the air cylinder rod and the guide post are fixed on the working plate, and the two pressure rods are fixedly connected to the lower portion of the working plate.
The utility model has the advantages that: the gas tightness testing tool is simple in structure, capable of rapidly testing the welding quality of the explosion-proof piece and also capable of testing the explosion pressure of the explosion-proof piece, reliable in testing data and high in testing efficiency.
Drawings
FIG. 1 is a schematic view of a battery cover plate;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a cross-sectional view of the air-tightness test;
wherein: 1-cover plate, 2-explosion-proof sheet, 3-liquid injection hole, 4-cylinder, 5-guide column, 6-top plate, 7-working plate, 8-pressure rod, 9-side plate, 10-sealing gasket, 11-bottom plate, 12-groove, 13-support column and 14-vent hole.
Detailed Description
FIG. 1 is a schematic diagram of a square battery cover plate 1, wherein the cover plate 1 is provided with a liquid injection hole 3 besides two extracted electrode anode and cathode column heads, and the hole is sealed by welding after the battery is injected with battery liquid. An explosion-proof sheet 2 is welded on the inner surface of the cover plate 1 (relative to the extending column cap) at the position of the blast hole, and after the explosion-proof sheet is welded, an air tightness test needs to be carried out to detect the welding quality of the explosion-proof sheet so as to ensure the safety of the explosion-proof sheet.
Fig. 2 is the utility model discloses the structural schematic diagram, explosion-proof piece gas tightness test fixture include pushing down the mechanism and sealed the pad 10, sealed pad 10's shape is corresponding with 1 shape of battery apron, and for rectangular shape groove structure, this groove is corresponding with the lower part shape, the size of apron, sees fig. 3. And a support column 13 and a vent hole 14 are processed in the groove, the position of the support column 13 is consistent with that of the liquid injection hole 3 on the cover plate, and the position of the vent hole 14 is consistent with that of the explosion-proof sheet 2 on the cover plate. When the cover plate 1 is placed on the gasket 10, the explosion-proof piece 2 is fully positioned in the vent hole 14, specifically, the support column 13 supports the cover plate at the position of the liquid injection hole 3 to prevent the cover plate from deforming after being pressed down, as shown in the enlarged view of fig. 3.
The pressing mechanism is shown in fig. 2 and comprises a cylinder 4, a guide post 5, a top plate 6, a working plate 7, a pressing rod 8, a side plate 9, a bottom plate 11 and the like. The bottom plate 11 is provided with a groove 12 corresponding to the shape and size of the sealing gasket 10, and when the air tightness test is carried out, the sealing gasket 10 is placed in the groove 12, so that the sealing gasket 10 made of non-metal materials can be prevented from deforming under the action of pressure. Meanwhile, the bottom of the groove 12 is provided with an air inlet hole, the position of the air inlet hole is consistent with that of the vent hole 14, and the air inlet hole and the sealing gasket 10 keep good sealing performance, and the air inlet hole is connected with high-pressure air for air tightness test. Push down the mechanism and have curb plate 9 at 11 both sides welded fastening of bottom plate, top welded fastening roof 6 at curb plate 9, upper surface middle part fixed mounting cylinder 4 at roof 6, on roof 6, the both sides processing of cylinder 4 has the locating hole, installation guide post 5 in the locating hole, cylinder jar pole, two guide posts 5 are all fixed on working plate 7, the working plate is located the lower part of roof 6, it reciprocates to drive by the cylinder, lower part fixed connection depression bar 8 at working plate 7, 1 even atress of battery apron can be guaranteed to depression bar 8's position, and should not influence the airtight test of blast hole and observe.
When the air tightness test of the explosion-proof sheet is carried out, the cover plate 1 and the sealing gasket 10 are installed in a matched mode, then the cover plate and the sealing gasket 10 are placed into the groove 12, the air cylinder 4 is started, the cylinder rod drives the working plate 7 to move downwards, the pressing rod 8 is used for positioning and compacting the battery cover plate 1 under the action of the guide column 5, and the peripheral position of the explosion-proof sheet 2 and the sealing gasket 10 are sealed. And then compressed gas is fed into the air inlet hole at the bottom of the bottom plate 11, alcohol is dripped into the upper part of the explosion hole, and if bubbles appear, the gas leakage and poor welding of the explosion-proof sheet of the battery cover plate are indicated. If no bubble appears, the explosion-proof sheet is airtight and the welding is good. And after the test is finished, the compressed gas is closed, the cylinder 4 is started, the working plate 7 moves upwards, the cover plate is taken out from the sealing gasket 10, and the next air tightness test of the cover plate is carried out.
The air tightness testing tool can be used for testing the welding performance of the explosion-proof piece and can also be used for testing the explosion pressure of the explosion-proof piece. After the cover plate presses the seal, compressed gas is sent into the seal from the air inlet hole, the pressure of the compressed gas is gradually increased until the explosion-proof piece is exploded, and the data of the pressure gauge is the explosion pressure of the explosion-proof piece at the moment. The test can test whether the explosion-proof sheet meets the design requirements, and can be used for the performance test of the explosion-proof sheet entering a factory. It should be noted that, because the pressures of the air cylinder are different during the airtight test and the burst test, the materials of the sealing gasket should be treated differently, so as to avoid the sealing gasket from deforming under high pressure and affecting the performance test.
The explosion-proof piece air tightness testing tool is simple in structure, capable of rapidly testing the welding performance of the explosion-proof piece and also capable of testing the explosion pressure of the explosion-proof piece, reliable in testing data and high in efficiency, and can meet the requirement of large-scale production of cover plates.
Claims (2)
1. The utility model provides an explosion-proof piece gas tightness test fixture which characterized in that: the anti-explosion sealing device comprises a pressing mechanism and a sealing gasket (10), wherein the sealing gasket (10) is of a groove-shaped structure corresponding to the shape of a cover plate of a welding anti-explosion sheet, and a supporting column (13) and a vent hole (14) are processed in the groove; during air tightness test, the position of the support column (13) is consistent with that of the liquid injection hole (3) in the cover plate, the position of the vent hole (14) is consistent with that of the explosion-proof sheet (2) in the cover plate, and the explosion-proof sheet (2) is positioned in a hole space of the vent hole (14); a groove (12) corresponding to the shape and the size of the sealing gasket (10) is machined in a bottom plate (11) of the pressing mechanism, an air inlet hole is machined in the bottom of the groove (12), the position of the air inlet hole is consistent with that of the vent hole (14), good sealing performance is kept between the air inlet hole and the sealing gasket (10), and the air inlet hole is connected with air tightness testing gas.
2. The explosion-proof piece airtightness test tool according to claim 1, characterized in that: the pressing mechanism further comprises a cylinder (4), guide columns (5), a top plate (6), a working plate (7), pressing rods (8) and side plates (9), the side plates (9) are welded and fixed on two sides of a bottom plate (11) of the pressing mechanism, the top of each side plate (9) is welded and fixed with the top plate (6), the cylinder (4) is fixedly installed in the middle of the upper surface of the top plate (6), positioning holes are machined in two sides of the cylinder (4) on the top plate (6), the guide columns (5) are installed in the positioning holes, cylinder rods and the guide columns (5) of the cylinder (4) are all fixed on the working plate (7), the working plate (7) is located below the top plate (6), and the lower portion of the working plate (7) is fixedly connected with the two pressing rods (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921020429.1U CN210513576U (en) | 2019-07-03 | 2019-07-03 | Explosion-proof piece gas tightness test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921020429.1U CN210513576U (en) | 2019-07-03 | 2019-07-03 | Explosion-proof piece gas tightness test fixture |
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| Publication Number | Publication Date |
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| CN210513576U true CN210513576U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921020429.1U Active CN210513576U (en) | 2019-07-03 | 2019-07-03 | Explosion-proof piece gas tightness test fixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018511A (en) * | 2021-11-04 | 2022-02-08 | 中船澄西扬州船舶有限公司 | Cabin gas tightness detects frock |
| CN117367989A (en) * | 2023-11-15 | 2024-01-09 | 深圳华尔升智控技术有限公司 | Explosion, respiration and pressure-resistant gas detection test equipment for battery cover plate |
-
2019
- 2019-07-03 CN CN201921020429.1U patent/CN210513576U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018511A (en) * | 2021-11-04 | 2022-02-08 | 中船澄西扬州船舶有限公司 | Cabin gas tightness detects frock |
| CN117367989A (en) * | 2023-11-15 | 2024-01-09 | 深圳华尔升智控技术有限公司 | Explosion, respiration and pressure-resistant gas detection test equipment for battery cover plate |
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