Square aluminum shell battery pinhole defect detection device

Abstract

The utility model discloses a square aluminum shell battery pinhole defect detection device, which comprises a placing table and a detection seat, a square aluminum shell battery is placed on the placing table, the detection seat comprises at least four groups of mounting columns, a horizontal cross beam, a vertical sliding table cylinder and a detection arm, and the mounting columns are respectively mounted on two sides of the placing table. Sliding rails are installed on the installation stand columns on the two sides of the placement table, meanwhile, the two ends of the bottom of the horizontal cross beam slide along the sliding rails through driving assemblies, one side of the vertical sliding table air cylinder is slidably arranged on one side of the horizontal cross beam through a transverse moving assembly, the output end of the vertical sliding table air cylinder is connected with an installation base, and the top of the detection arm and the installation base are rotationally installed. A smearing head is arranged at the bottom of the detection arm, an air pipe penetrates through the detection arm, an outlet of the air pipe is provided with a suction cup on the side wall of the detection arm, and an inlet of the air pipe is connected with a compressed gas storage box. The ear pinhole detection device has the advantages of being capable of detecting and identifying small-aperture pinholes of ears by naked eyes, and being convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of square aluminum shell battery preparation, in particular to a square aluminum shell battery pinhole defect detection device. Background Art

[0002] Square aluminum shell lithium battery has many advantages such as simple structure, good impact resistance, high energy density, large single capacity, etc. It has always been the main direction of domestic lithium battery manufacturing and development, with a market share of more than 40%. The square aluminum shell lithium battery structure consists of battery cells (positive and negative plates, diaphragms), electrolytes, shells, top covers and other components.

[0003] At present, after the shell of the square aluminum shell battery is fully welded on all sides, it is inevitable that there will be defects such as cracks and pinholes. For such defects, wire filling and welding are used to repair them. However, the diameter of the pinhole defect is about 0.2mm, which cannot be distinguished by the naked eye, and it is not easy to identify the position of the pinhole during manual welding. Utility Model Content

[0004] The utility model aims to provide a square aluminum shell battery pinhole defect detection device, which can detect and identify small-diameter pinholes that cannot be distinguished by the naked eye, and is convenient and fast.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A square aluminum shell battery pinhole defect detection device, characterized in that it comprises a placing table and a detection seat, a square aluminum shell battery is placed on the placing table, a base is arranged at the bottom of the placing table, the placing table is rotatably arranged on the base, the detection seat comprises a mounting column, a horizontal beam, a vertical slide cylinder and a detection arm, the mounting columns are at least four groups, which are respectively mounted on both sides of the placing table, and slide rails are installed on the mounting columns on both sides of the placing table. At the same time, the two ends of the bottom of the horizontal beam slide along the slide rails respectively through a driving assembly, and one side of the vertical slide cylinder is slidably arranged on one side of the horizontal beam through a transverse movement assembly, and the output end of the vertical slide cylinder is connected to a mounting seat, the top of the detection arm is rotatably mounted on the mounting seat, a smearing head is arranged at the bottom of the detection arm, an air pipe is passed through the inside of the detection arm, the outlet of the air pipe is provided with a suction cup on the side wall of the detection arm, and the inlet of the air pipe is connected to a compressed gas storage tank.

[0007] Preferably, a fixed column is provided in the center of the base, a movable sleeve at the bottom of the placing table is installed on the fixed column, a worm gear is provided under the placing table, a worm is provided on one side of the placing table of the base, the worm is meshed with one side of the worm wheel for transmission, and a transmission motor is provided at one end of the worm.

[0008] Preferably, two groups of clamping seats are arranged above the placing table, one group of the clamping seats is fixedly installed on the placing table, and at least two groups of guide columns are horizontally installed on the bottom of the other group of the clamping seats, and the guide columns are movably arranged along the placing table. A translation cylinder is arranged inside the placing seat between the guide columns, and the output end of the translation cylinder is fixedly connected to the bottom of the clamping seat.

[0009] Preferably, sliders are fixedly installed at both ends of the bottom of the horizontal beam, and the sliders slide back and forth along the slide rails. The driving component is arranged at one of the groups of sliders, and the driving component includes a driving motor, a mounting plate and a driving screw. The mounting plates are provided in two groups, which are respectively installed at the two ends of the slide rails. Both ends of the driving screw are rotatably installed between the two groups of mounting plates. The driving screw passes through the slider and is transmission-connected to the internal thread of the slider. One end of the driving screw passes through the mounting plate and is transmission-connected to the driving motor.

[0010] Preferably, the transverse shift assembly includes a transverse shift block, a transverse shift screw and a transverse shift motor. Both ends of the transverse shift screw are rotatably installed between the front end of the horizontal beam. The transverse shift screw passes through the transverse shift block and is transmission-connected with the internal thread of the transverse shift block. One end of the transverse shift screw passes through the horizontal beam and is transmission-connected with the transverse shift motor. The transverse shift block is fixedly arranged with the vertical slide cylinder.

[0011] Preferably, a rotating shaft is provided through the mounting seat, the rotating shaft is movably provided in the mounting seat, the rotating shaft is fixedly connected to the top of the detection arm, a rotating motor is provided behind the mounting seat, and the output end of the rotating motor is transmission-connected to the rotating shaft.

[0012] Preferably, the rotation angle of the detection arm is 180°.

[0013] Preferably, the coating head is connected to a sample storage box via a liquid inlet pipe, the sample storage box stores fatty acid metal brine, and a liquid inlet pump is arranged on the liquid inlet pipe.

[0014] Preferably, a throttle valve is connected to the air pipe, and the suction cup seals and covers the liquid outlet of the square aluminum shell battery.

[0015] In summary, the utility model has the following beneficial effects:

[0016] The utility model clamps the square aluminum shell battery by means of a placement table capable of realizing 360-degree rotation and a movable clamping support seat, so that the square aluminum shell battery can be tested in all directions.

[0017] The utility model applies fatty acid metal brine around the weld of a square aluminum shell battery through a sample storage box and an application head. After the application is completed, the suction cup on the detection arm is used to tightly seal and adsorb the liquid filling port of the square aluminum shell battery, and compressed gas is introduced. Bubbles will be generated at the position of the pinhole in the weld, so the pinhole position can be quickly located. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure at A in the middle. DETAILED DESCRIPTION

[0020] The specific implementation manner of the present utility model is further described below in conjunction with the accompanying drawings. This embodiment does not constitute a limitation to the present utility model.

[0021] like Figure 1 and 2 The device for detecting pinhole defects in square aluminum shell batteries shown in the figure comprises a placing table 1 and a detection seat, a square aluminum shell battery 2 is placed on the placing table 1, a base 3 is arranged at the bottom of the placing table 1, the placing table 1 is rotatably arranged on the base 3, the detection seat comprises mounting columns 4, horizontal beams 5, vertical slide cylinders 6 and detection arms 7, at least four groups of mounting columns 4 are arranged, which are respectively installed on both sides of the placing table 1, and slide rails 8 are installed on the mounting columns 4 on both sides of the placing table 1, and at the same time, the two ends of the bottom of the horizontal beam 5 slide along the slide rails 8 respectively through the driving components, one side of the vertical slide cylinder 6 is slidably arranged on one side of the horizontal beam 5 through the transverse movement component, the output end of the vertical slide cylinder 6 is connected to a mounting seat 9, the top of the detection arm 7 is rotatably installed with the mounting seat 9, the bottom of the detection arm 7 is provided with a smearing head 10, an air pipe 11 is passed through the inside of the detection arm 7, the outlet of the air pipe 11 is provided with a suction cup 12 on the side wall of the detection arm 7, and the inlet of the air pipe 11 is connected to a compressed gas storage tank 13.

[0022] A fixed column 14 is provided in the center of the base 3, and a movable sleeve at the bottom of the placing table 1 is installed on the fixed column 14. A worm gear 15 is arranged around the lower part of the placing table 1. A worm 16 is provided on one side of the placing table 1 of the base 3. The worm 16 is meshed with one side of the worm gear 15 for transmission, and a transmission motor 17 is provided at one end of the worm 16.

[0023] Two groups of clamping seats 18 are arranged above the placement table 1. One group of clamping seats 18 is fixedly installed on the placement table 1, and at least two groups of guide columns 19 are horizontally installed at the bottom of the other group of clamping seats 18. The guide columns 19 are movably arranged along the placement table 1. A translation cylinder 20 is arranged inside the placement seat between the guide columns 19, and the output end of the translation cylinder 20 is fixedly connected to the bottom of the clamping seat 18.

[0024] Slide blocks 28 are fixedly installed at both ends of the bottom of the horizontal beam 5. The slide blocks 28 slide back and forth along the slide rails 8. The driving component is arranged at one group of slide blocks 28. The driving component includes a driving motor 21, a mounting plate 22 and a driving screw. Two groups of mounting plates 22 are arranged, which are respectively installed at the two ends of the slide rails 8. Both ends of the driving screw are rotatably installed between the two groups of mounting plates 22. The driving screw passes through the slide block 28 and is connected to the internal thread of the slide block 28. One end of the driving screw passes through the mounting plate 22 and is connected to the driving motor 21.

[0025] The transverse movement assembly includes a transverse movement block 24, a transverse movement screw 25 and a transverse movement motor 26. The two ends of the transverse movement screw 25 are rotatably installed between the front end of the horizontal beam 5. The transverse movement screw 25 passes through the transverse movement block 24 and is connected to the internal thread of the transverse movement block 24. One end of the transverse movement screw 25 passes through the horizontal beam 5 and is connected to the transverse movement motor 26. The transverse movement block 24 is fixed to the vertical slide cylinder 6.

[0026] A rotating shaft 27 is provided through the mounting seat 9, and the rotating shaft 27 is movably provided in the mounting seat 9. The rotating shaft 27 is fixedly connected to the top of the detection arm 7. A rotating motor is provided at the rear of the mounting seat 9. The output end of the rotating motor is transmission-connected to the rotating shaft 27. The rotation angle of the detection arm 7 is 180°.

[0027] The smear head 10 is connected to a sample storage box 30 via a liquid inlet pipe 29 . Fatty acid metal brine is stored in the sample storage box 30 . A liquid inlet pump 31 is provided on the liquid inlet pipe 29 .

[0028] A throttle valve 23 is connected to the air pipe 11 , and the suction cup 12 is sealed and covers the liquid outlet of the square aluminum shell battery 2 .

[0029] The utility model clamps the square aluminum shell battery by means of a placement table capable of realizing 360-degree rotation and a movable clamping support seat, so that the square aluminum shell battery can be tested in all directions.

[0030] The utility model applies fatty acid metal brine around the weld of a square aluminum shell battery through a sample storage box and an application head. After the application is completed, the suction cup on the detection arm is used to tightly seal and adsorb the liquid filling port of the square aluminum shell battery, and compressed gas is introduced. Bubbles will be generated at the position of the pinhole in the weld, so the pinhole position can be quickly located.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A square aluminum shell battery pinhole defect detection device, characterized in that: It includes a placing table and a detection seat, a square aluminum shell battery is placed on the placing table, a base is arranged at the bottom of the placing table, the placing table is rotatably arranged on the base, the detection seat includes mounting columns, horizontal beams, vertical slide cylinders and detection arms, at least four groups of mounting columns are arranged, which are respectively installed on both sides of the placing table, slide rails are installed on the mounting columns on both sides of the placing table, and at the same time, the two ends of the bottom of the horizontal beam slide along the slide rails respectively through driving components, one side of the vertical slide cylinder is slidably arranged on one side of the horizontal beam through a transverse movement component, the output end of the vertical slide cylinder is connected to a mounting seat, the top of the detection arm is rotatably installed with the mounting seat, a smearing head is arranged at the bottom of the detection arm, an air pipe is passed through the inside of the detection arm, a suction cup is arranged at the outlet of the air pipe on the side wall of the detection arm, and the inlet of the air pipe is connected to a compressed gas storage tank.

2. A square aluminum shell battery pinhole defect detection device according to claim 1, characterized in that: A fixed column is arranged in the center of the base, a movable sleeve at the bottom of the placing table is installed on the fixed column, a worm wheel is arranged around the bottom of the placing table, a worm is arranged on one side of the placing table of the base, the worm is meshed with one side of the worm wheel for transmission, and a transmission motor is arranged at one end of the worm.

3. A square aluminum shell battery pinhole defect detection device according to claim 1, characterized in that: Two groups of clamping seats are arranged above the placing table, one group of the clamping seats is fixedly installed on the placing table, and at least two groups of guide columns are horizontally installed on the bottom of the other group of the clamping seats. The guide columns are movably arranged along the placing table, and a translation cylinder is arranged inside the placing table between the guide columns, and the output end of the translation cylinder is fixedly connected to the bottom of the clamping seat.

4. A square aluminum shell battery pinhole defect detection device according to claim 1, characterized in that: Slide blocks are fixedly installed at both ends of the bottom of the horizontal beam, and the slide blocks slide back and forth along the slide rails. The driving assembly is arranged at one of the groups of slide blocks, and the driving assembly includes a driving motor, a mounting plate and a driving screw. The mounting plates are provided with two groups, which are respectively installed at the two ends of the slide rails. The two ends of the driving screw are rotatably installed between the two groups of mounting plates. The driving screw passes through the slide block and is transmission-connected with the internal thread of the slide block. One end of the driving screw passes through the mounting plate and is transmission-connected with the driving motor.

5. The square aluminum shell battery pinhole defect detection device according to claim 1, characterized in that: The transverse shift assembly includes a transverse shift block, a transverse shift screw and a transverse shift motor. Both ends of the transverse shift screw are rotatably installed between the front end of the horizontal beam. The transverse shift screw passes through the transverse shift block and is connected to the internal thread of the transverse shift block. One end of the transverse shift screw passes through the horizontal beam and is connected to the transverse shift motor. The transverse shift block is fixed to the vertical slide cylinder.

6. A square aluminum shell battery pinhole defect detection device according to claim 1, characterized in that: A rotating shaft is provided through the mounting seat, the rotating shaft is movably provided in the mounting seat, the rotating shaft is fixedly connected to the top of the detection arm, a rotating motor is provided behind the mounting seat, and the output end of the rotating motor is transmission-connected to the rotating shaft.

7. A square aluminum shell battery pinhole defect detection device according to claim 6, characterized in that: The rotation angle of the detection arm is 180°.

8. The square aluminum shell battery pinhole defect detection device according to claim 1, characterized in that: The smear head is connected to a sample storage box through a liquid inlet pipe, and fatty acid metal brine is stored in the sample storage box. A liquid inlet pump is arranged on the liquid inlet pipe.

9. A square aluminum shell battery pinhole defect detection device according to claim 1, characterized in that: The air pipe is connected with a throttle valve, and the suction cup seals and covers the liquid outlet of the square aluminum shell battery.

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