An automatic sampling device for lithium battery diaphragm inspection

Abstract

The present application discloses an automatic sampling device for lithium battery diaphragm inspection, which belongs to the technical field of diaphragm sampling. It includes a partition, a solenoid valve, a slide seat and an angle adjuster installed on the slide seat, the slide seat includes a positioning seat, a guide rod and a knife seat, the positioning seat is fixedly connected to the bottom front end of the partition, the guide rod is installed at the front end of the positioning seat, the knife seat is slidably connected to the guide rod, and the solenoid valve controls the knife seat to slide left and right on the guide rod; the automatic sampling device for lithium battery diaphragm inspection of the present application solves the technical problem that the cutting method of lithium battery diaphragm is slightly different from that of ordinary film due to its special material properties. In the existing sampling device, since the diaphragm that needs to be sampled is not fixed, the lithium battery diaphragm will be wrinkled when cutting, and it is easy to cause the cutting edge of the lithium battery diaphragm to be uneven or produce burrs, which affects the performance of the diaphragm sample and makes the test result inaccurate.

Description

Technical Field

[0001] The present application relates to the technical field of diaphragm sampling, and in particular to an automatic sampling device for lithium battery diaphragm inspection. Background Art

[0002] In the structure of lithium batteries, the diaphragm is one of the key inner components. For lithium battery series, since the electrolyte is an organic solvent system, a diaphragm material resistant to organic solvents is required. Generally, a high-strength thin-film polyolefin porous membrane is used. The GB / T36363-2018 "Polyolefin Diaphragms for Lithium-ion Batteries" test standard requires that lithium battery diaphragms have sufficient mechanical properties, including puncture strength, tensile strength, etc. The smaller this value is, the better the performance of the lithium battery. The sampled diaphragm packaging should be intact. Remove the three surface layers on the film roll, cut and sample along the width of the diaphragm, and test the appearance, size, physical properties and electrical properties. The diaphragm to be tested should be sealed and packaged to prevent moisture and contamination.

[0003] Due to its special material properties, the cutting method of lithium battery separators is slightly different from that of ordinary membranes. In existing sampling devices, since the separator section to be sampled is not fixed, the lithium battery separator will wrinkle when cut, and it is easy to cause the cutting edge of the lithium battery separator to be uneven or produce burrs, which affects the performance of the separator sample and makes the test results inaccurate.

[0004] Therefore, it is necessary to provide an automatic sampling device for lithium battery diaphragm inspection to solve the above problems. Summary of the invention

[0005] Based on the above problems existing in the prior art, the purpose of the present application is to provide an automatic sampling device for lithium battery diaphragm inspection to solve the problems raised in the above background technology.

[0006] The technical solution adopted by the present application to solve the technical problem is: an automatic sampling device for lithium battery diaphragm inspection, comprising a partition, a solenoid valve, a slide seat and an angle adjuster installed on the slide seat, the slide seat comprising a positioning seat, a guide rod and a knife seat, the positioning seat is fixedly connected to the bottom front end of the partition, the guide rod is installed at the front end of the positioning seat, the knife seat is slidably connected to the guide rod, and the solenoid valve controls the knife seat to slide left and right on the guide rod;

[0007] The angle adjuster comprises a fixed adjustment disk, a movable adjustment disk and a bolt. The fixed adjustment disk and the movable adjustment disk have the same structural shape. The connection between the fixed adjustment disk and the movable adjustment disk is a mutually meshing sawtooth shape. The fixed adjustment disk is fixedly connected to the front end of the knife seat. The bolt is connected to the center of the fixed adjustment disk and the movable adjustment disk. A blade with a blade facing right is provided through the movable adjustment disk. The bottom end of the blade is connected to the bolt for easy disassembly.

[0008] A through slot is formed at the front end of the partition plate, the blade is located in the through slot and the highest point of the blade shall not be lower than the top surface of the through slot.

[0009] Furthermore, scale lines are arranged on the outer peripheral wall of the connecting portion between the fixed adjusting disk and the movable adjusting disk.

[0010] Furthermore, the machine also includes a base and a frame, the partition is arranged between the base and the frame, the solenoid valve is fixedly connected to the inner wall of the bottom of the base, the front end of the base is threadedly connected with an inclined inclined plate, and a placement groove is opened at the center of the inclined plate.

[0011] Furthermore, a roller is rotatably connected between the upper rear end of the frame, and a diaphragm to be sampled is installed on the roller. A guide roller is rotatably connected between the lower front end of the frame, and a flattening mechanism is arranged above the front end of the frame, and the flattening mechanism is arranged at the front end of the guide roller.

[0012] Furthermore, the flattening mechanism includes a cylinder, a counterweight, a slider, a slide rail, a pressure plate and a top plate, the top plate is fixedly connected to the front end top of the frame, the slide rails are arranged on the inner surfaces of both sides of the front end of the frame and are located below the top plate, the telescopic end of the cylinder is arranged through the center of the top plate, the telescopic end of the cylinder is fixedly connected to the counterweight, two sliders are fixedly connected on both sides of the counterweight, the sliders are fixedly connected to the slide rails, a pressure plate is fixedly connected between the bottoms of the two sliders, a pressure groove and a positioning groove are opened on the pressure plate, the pressure groove is connected to the positioning groove, and the size of the pressure groove is consistent with that of the through groove.

[0013] Furthermore, a protective block is fixedly connected to the right side of the through slot, and the protective block can be embedded in the positioning slot when the positioning slot is pressed downward.

[0014] Furthermore, a scale is arranged in the placement groove, an adjustment plate is threadedly connected to the outer surface of the inclined plate, a pressing block is arranged on the top of the adjusting plate, and the pressing block is slidably connected to the inclined plate.

[0015] The beneficial effect of the present application is that the present application provides an automatic sampling device for lithium battery diaphragm inspection, which is equipped with an angle adjuster to change the cutting angle of the blade, and can adapt to diaphragms with different stretching degrees for cutting and sampling. At the same time, the scale on the angle adjuster can be used to judge whether the blade is clamped or blunt, resulting in uneven cutting of the diaphragm. This solves the problem that the cutting method of lithium battery diaphragms is slightly different from that of ordinary films due to their special material properties. In existing sampling devices, since the diaphragm section to be sampled is not fixed, the lithium battery diaphragm will wrinkle during cutting, and it is easy to cause the cutting edge of the lithium battery diaphragm to be uneven or produce burrs, which affects the performance of the diaphragm sample and makes the test results inaccurate.

[0016] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0018] In the attached picture:

[0019] Figure 1 It is an overall schematic diagram of this application;

[0020] Figure 2 This is a schematic diagram of the other side of this application;

[0021] Figure 3 A schematic diagram of the rack for this application;

[0022] Figure 4 A schematic diagram of the slide seat of this application;

[0023] Figure 5 For this application Figure 4 A magnified schematic diagram of area A in FIG.

[0024] Figure 6 This is a schematic diagram of the back of the pressure plate for this application;

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Machine base; 2. Machine frame; 3. Partition plate; 31. Through groove; 4. Diaphragm; 5. Flattening mechanism; 51. Cylinder; 52. Counterweight; 53. Slider; 54. Slide rail; 55. Pressing plate; 551. Pressing groove; 552. Positioning groove; 56. Top plate; 6. Inclined plate; 61. Placement groove; 7. Scale; 8. Adjusting plate; 9. Pressing block; 10. Protective block; 11. Roller; 12. Guide roller; 13. Solenoid valve; 14. Sliding seat; 141. Positioning seat; 142. Guide rod; 143. Knife seat; 15. Angle adjuster; 151. Fixed adjusting disk; 152. Movable adjusting disk; 153. Bolt; 16. Blade. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 should fall within the scope of protection of the present application.

[0029] like Figure 1-6 As shown, the present application provides a technical solution: an automatic sampling device for lithium battery diaphragm inspection, comprising a partition 3, a solenoid valve 13, a slide 14 and an angle adjuster 15 installed on the slide 14, the slide 14 comprises a positioning seat 141, a guide rod 142 and a knife seat 143, the positioning seat 141 is fixedly connected to the bottom front end of the partition 3, the guide rod 142 is installed at the front end of the positioning seat 141, the knife seat 143 is slidably connected to the guide rod 142, and the solenoid valve 13 controls the knife seat 143 to slide left and right on the guide rod 142;

[0030] The angle adjuster 15 includes a fixed adjustment disk 151, a movable adjustment disk 152 and a bolt 153. The fixed adjustment disk 151 and the movable adjustment disk 152 have the same structural shape. The connection between the fixed adjustment disk 151 and the movable adjustment disk 152 is a mutually meshing sawtooth shape. The fixed adjustment disk 151 is fixedly connected to the front end of the knife seat 143. The bolt 153 is connected to the center of the fixed adjustment disk 151 and the movable adjustment disk 152. A blade 16 with a blade facing right is provided through the movable adjustment disk 152. The bottom end of the blade 16 is connected to the bolt 153 for easy disassembly.

[0031] A through slot 31 is formed at the front end of the partition plate 3 . The blade 16 is located in the through slot 31 and the highest point of the blade 16 must not be lower than the top surface of the through slot 31 .

[0032] Put the blade 16 on the movable adjustment disk 152, turn the movable adjustment disk 152, adjust the cutting angle of the blade 16, and after tightening the bolt 153, the movable adjustment disk 152, the fixed adjustment disk 151 and the blade 16 are all fixed. At this time, start the solenoid valve 13 to control the knife seat 143 to move to the right. At this time, the knife seat 143 drives the angle adjuster 15 to move from left to right, and the blade 16 moves along the moving direction of the knife seat 143.

[0033] Scale lines are arranged on the outer peripheral wall of the connection portion between the fixed adjustment disk 151 and the movable adjustment disk 152 .

[0034] During the reciprocating cutting process of the blade 16, observe the correspondence between the scale lines on the fixed adjustment disk 151 and the movable adjustment disk 152. If the scale lines on the fixed adjustment disk 151 and the movable adjustment disk 152 are deflected, it means that the movable adjustment disk 152 is deflected, and the bolt 153 needs to be tightened to avoid the angle of the blade 16 from deflecting in time. It is not ruled out that the blade 16 has become blunt.

[0035] The device also includes a base 1 and a frame 2, a partition 3 is arranged between the base 1 and the frame 2, a solenoid valve 13 is fixedly connected to the bottom inner wall of the base 1, a front end of the base 1 is threadedly connected with an inclined inclined plate 6, and a placement groove 61 is opened at the center of the inclined plate 6.

[0036] A roller 11 is rotatably connected between the upper rear end of the frame 2, and a diaphragm 4 to be sampled is installed on the roller 11. A guide roller 12 is rotatably connected between the lower front end of the frame 2. A flattening mechanism 5 is arranged above the front end of the frame 2, and the flattening mechanism 5 is arranged at the front end of the guide roller 12.

[0037] The flattening mechanism 5 includes a cylinder 51, a counterweight 52, a slider 53, a slide rail 54, a pressure plate 55 and a top plate 56. The top plate 56 is fixedly connected to the top of the front end of the frame 2. The slide rails 54 are arranged on the inner surfaces of both sides of the front end of the frame 2 and are located below the top plate 56. The telescopic end of the cylinder 51 is arranged through the center of the top plate 56. The telescopic end of the cylinder 51 is fixedly connected to the counterweight 52. Two sliders 53 are fixedly connected on both sides of the counterweight 52. The slider 53 is fixedly connected to the slide rail 54. A pressure plate 55 is fixedly connected between the bottoms of the two sliders 53. A pressure groove 551 and a positioning groove 552 are opened on the pressure plate 55. The pressure groove 551 is connected to the positioning groove 552, and the size of the pressure groove 551 is consistent with that of the through groove 31.

[0038] A protection block 10 is fixedly connected to the right side of the through slot 31 , and the protection block 10 can be embedded in the positioning slot 552 when the positioning slot 552 is pressed downward.

[0039] A scale 7 is arranged in the placement groove 61 , an adjusting plate 8 is threadedly connected to the outer surface of the inclined plate 6 , a pressing block 9 is arranged on the top of the adjusting plate 8 , and the pressing block 9 is slidably connected to the inclined plate 6 .

[0040] In one embodiment, how the device accomplishes automatic sampling.

[0041] Specifically, the diaphragm 4 is installed on the roller 11, passes through the bottom of the guide roller 12, passes through the top of the through slot 31 and is pulled to the outer surface of the inclined plate 6. After the adjustment plate 8 is adjusted to the length range required for cutting along the scale of the ruler 7, the adjustment plate 8 is fixed to the inclined plate 6 with threads. When the wide side of the diaphragm 4 is flush with the upper edge of the adjustment plate 8, the pressure block 9 is placed on the top of the adjustment plate 8 to press the diaphragm 4 on the inclined plate 6.

[0042] The blade 16 is placed on the movable adjustment disk 152, and the movable adjustment disk 152 is rotated to adjust the cutting angle of the blade 16. After the bolt 153 is tightened, the movable adjustment disk 152, the fixed adjustment disk 151 and the blade 16 are all fixed.

[0043] Start the cylinder 51, which pushes the counterweight 52 downward. The counterweight 52 slides downward along the slide rail 54 under the action of the slider 53. When the cylinder 51 is pushed to the maximum stroke, the pressure plate 55 has pressed the diaphragm 4 onto the top surface of the partition 3, and the pressure groove 551 coincides with the through groove 31.

[0044] Start the solenoid valve 13 to control the knife seat 143 to move to the right. At this time, the knife seat 143 drives the angle adjuster 15 to move from left to right. The blade 16 moves along the moving direction of the knife seat 143. The blade 16 slides in the through groove 31. The tip of the blade 16 slides in the pressing groove 551 to cut the diaphragm 4 between the pressing groove 551 and the through groove 31.

[0045] After cutting is completed, the solenoid valve 13 controls the knife seat 143 to move leftward, and the knife tip falls into the bottom of the protection block 10. Then the cylinder 51 moves the pressing plate 55 upward, the pressing block 9 is removed, and the sample diaphragm 4 is taken out.

[0046] To summarize, the device is equipped with an angle adjuster to change the cutting angle of the blade, so that it can adapt to the cutting and sampling of diaphragms with different stretch degrees. At the same time, it can judge whether the blade is clamped or blunt through the scale on the angle adjuster, resulting in uneven cutting of the diaphragm. This solves the problem that the cutting method of lithium battery diaphragms is slightly different from that of ordinary films due to their special material properties. In the existing sampling device, since the diaphragm to be sampled is not fixed, the lithium battery diaphragm will wrinkle during cutting, and it is easy to cause the cutting edge of the lithium battery diaphragm to be uneven or produce burrs, which affects the performance of the diaphragm sample and makes the test results inaccurate.

[0047] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic sampling device for lithium battery diaphragm inspection, comprising a partition (3), a solenoid valve (13), a slide seat (14) and an angle adjuster (15) mounted on the slide seat (14), characterized in that: The slide seat (14) comprises a positioning seat (141), a guide rod (142) and a knife seat (143); the positioning seat (141) is fixedly connected to the front end of the bottom of the partition (3); the guide rod (142) is installed at the front end of the positioning seat (141); the knife seat (143) is slidably connected to the guide rod (142); and the solenoid valve (13) controls the knife seat (143) to slide left and right on the guide rod (142); The angle adjuster (15) comprises a fixed adjustment disk (151), a movable adjustment disk (152) and a bolt (153); the fixed adjustment disk (151) and the movable adjustment disk (152) have the same structural shape; the connection between the fixed adjustment disk (151) and the movable adjustment disk (152) is a mutually meshing sawtooth shape; the fixed adjustment disk (151) is fixedly connected to the front end of the knife seat (143); the bolt (153) is connected to the center of the fixed adjustment disk (151) and the movable adjustment disk (152); a blade (16) with a blade facing right is provided through the movable adjustment disk (152); the bottom end of the blade (16) is connected to the bolt (153) for easy disassembly; A through slot (31) is provided at the front end of the partition plate (3), the blade (16) is located in the through slot (31), and the highest point of the blade (16) must not be lower than the top surface of the through slot (31).

2. The automatic sampling device for lithium battery diaphragm inspection according to claim 1, characterized in that: Scale lines are arranged on the outer peripheral wall of the connection portion between the fixed adjustment disk (151) and the movable adjustment disk (152).

3. The automatic sampling device for lithium battery diaphragm inspection according to claim 2, characterized in that: The machine also comprises a base (1) and a frame (2), the partition plate (3) being arranged between the base (1) and the frame (2), the solenoid valve (13) being fixedly connected to the inner wall of the bottom of the base (1), the front end of the base (1) being threadedly connected with an inclined inclined plate (6), and a placement groove (61) being provided at the center of the inclined plate (6).

4. The automatic sampling device for lithium battery diaphragm inspection according to claim 1, characterized in that: A roller (11) is rotatably connected between the upper rear end of the frame (2), and a diaphragm (4) to be sampled is installed on the roller (11). A guide roller (12) is rotatably connected between the lower front end of the frame (2), and a flattening mechanism (5) is arranged above the front end of the frame (2), and the flattening mechanism (5) is arranged at the front end of the guide roller (12).

5. The automatic sampling device for lithium battery diaphragm inspection according to claim 1, characterized in that: The flattening mechanism (5) comprises a cylinder (51), a counterweight (52), a slider (53), a slide rail (54), a pressure plate (55) and a top plate (56); the top plate (56) is fixedly connected to the top of the front end of the frame (2); the slide rail (54) is arranged on the inner surfaces of both sides of the front end of the frame (2) and is located below the top plate (56); the telescopic end of the cylinder (51) is arranged through the center of the top plate (56); The counterweight (52) is fixedly connected to two sliding blocks (53) on both sides of the counterweight (52). The sliding blocks (53) are fixedly connected to the slide rails (54). A pressing plate (55) is fixedly connected between the bottoms of the two sliding blocks (53). The pressing plate (55) is provided with a pressing groove (551) and a positioning groove (552). The pressing groove (551) is connected to the positioning groove (552). The sizes of the pressing groove (551) and the through groove (31) are consistent.

6. The automatic sampling device for lithium battery diaphragm inspection according to claim 5, characterized in that: A protection block (10) is fixedly connected to the right side of the through slot (31), and the protection block (10) can be embedded in the positioning slot (552) when the positioning slot (552) is pressed downward.

7. The automatic sampling device for lithium battery diaphragm inspection according to claim 3, characterized in that: A scale (7) is arranged in the placement groove (61), an adjustment plate (8) is threadedly connected to the outer surface of the inclined plate (6), a pressing block (9) is arranged at the top end of the adjustment plate (8), and the pressing block (9) is slidably connected to the inclined plate (6).

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