Detection device for lithium battery diaphragm after slitting and use method of detection device

Abstract

The invention discloses a detection device for a lithium battery diaphragm after slitting and a use method of the detection device, and belongs to the technical field of detection. Comprising a rack, at least two moving modules are arranged on the rack, and rotating modules used for mounting diaphragm rolls are arranged on the moving modules, so that the moving modules drive the rotating modules to linearly move, and the rotating modules drive the diaphragm rolls to rotate. According to the detection device for the lithium battery diaphragm after slitting and the use method thereof, the problems that in the slitting process, burrs and wavy edges can be generated on the slit diaphragm, the size does not meet the requirements and the like are solved, manual inspection is often carried out at present, so that the detection standard has large errors, the efficiency is not high, and the detection cost is high are solved. And careless mistakes are easy to occur.

Description

Technical Field

[0001] The present application relates to the field of detection technology, and specifically to a detection device for lithium battery diaphragm after slitting and a method of using the same. Background Art

[0002] Lithium battery separator slitting is a key step in the lithium battery manufacturing process, which mainly involves cutting the coiled separator into narrower separators. The traditional control scheme of the slitting machine usually uses a large motor drive and adjusts the surface tension of the material through a magnetic powder brake to ensure that the tension remains constant during the winding process. The magnetic powder brake controls the torque by adjusting the current, which is suitable for high-speed fine-tuning and medium and small power speed control systems.

[0003] During the slitting process, the slit diaphragms may have burrs, wavy edges, and dimensions that do not meet the requirements. Currently, they are often inspected manually, which results in errors in the inspection standards, is inefficient, and is prone to omissions.

[0004] Therefore, it is necessary to provide a detection device for lithium battery diaphragm after cutting and a method of using the same 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 a detection device for lithium battery diaphragm after slitting and a method of using the same, so as 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: a detection device for lithium battery diaphragm after slitting and a method of using the same, comprising a frame, the frame is provided with no less than two groups of mobile modules, the mobile modules are each provided with a rotating module for mounting a diaphragm roll, so that the mobile module drives the rotating module to move linearly, and the rotating module drives the diaphragm roll to rotate;

[0007] A diameter detection unit and a height detection unit corresponding to the movable module are arranged on the frame along the traveling direction of the diaphragm roll. When the diaphragm roll touches any part of the diameter detection unit or the height detection unit while traveling, the displacement detection unit will judge and analyze the diaphragm roll, thereby concluding that the problem with the diaphragm roll is that the diameter or height is inconsistent with the standard.

[0008] Furthermore, the frame includes a workbench and a platform, the platform is located above the workbench, the movable module is installed on the workbench, a slider is slidably connected to the movable module, and the movable module drives the screw rod to rotate by driving the slider to move on the movable module.

[0009] Furthermore, the rotating module includes a gear box fixedly connected to the top of the slider, the input end of the gear box is connected to the motor, the output end of the top of the gear box is rotatably connected to a coaxially arranged fixed column and a turntable, the fixed column is at the top of the turntable, and the diaphragm roll is installed on the fixed column.

[0010] Further, the diameter detection unit includes a cross bar extending from the side of the frame from the back to the front, and at least two groups of first rotating columns are rotatably connected to the cross bar, and the top of the first rotating column is fixedly connected to a first rotating block with a plurality of protrusions on the outer peripheral wall, and the bottom of the first rotating column is fixedly connected to a diameter baffle, and the diameter baffle is between the first rotating block and the diameter baffle;

[0011] The plurality of diameter baffles are arranged in sequence from the back to the front at intervals and their lengths gradually become longer.

[0012] Further, the height detection unit includes an extension plate extending from the top of the frame from the back to the front, the extension plate is rotatably connected to at least two sets of second rotating columns, the left side of the second rotating column is fixedly connected to the outer peripheral wall of the second rotating block with a plurality of protrusions, the right side of the second rotating column is fixedly connected to the height baffle, and the height baffle is between the second rotating block and the height baffle;

[0013] The plurality of height baffles are arranged in sequence from the back to the front at intervals and their lengths gradually become longer.

[0014] Furthermore, the displacement detection unit includes displacement sensors corresponding to the number of the moving modules, and the displacement sensors are fixedly connected to the front end of the platform.

[0015] Furthermore, an L-shaped slide is fixedly connected between the cross bar and the right side and the bottom of the extension plate, a lower baffle and an upper baffle are fixedly connected to the slide, a plurality of linkage blocks engaged with the first rotating block and the second rotating block are slidably connected to the slide, and the linkage blocks are arranged between the lower baffle and the upper baffle.

[0016] Furthermore, a lower card slot corresponding to the plurality of protrusions on the first rotating block is opened on one side of the linkage block close to the cross bar, and an upper card slot corresponding to the plurality of protrusions on the second rotating block is opened on one side of the linkage block close to the extension plate, and the displacement sensor can detect the movement of the linkage block.

[0017] Further, the following steps are included:

[0018] Step 1: Install the diaphragm roll that needs to be tested;

[0019] Step 2: Control the diaphragm roll to move toward the detection area;

[0020] Step 3: The sensor analyzes and determines the detection results.

[0021] The beneficial effects of the present application are as follows: the present application provides a device for detecting lithium battery diaphragms after slitting and a method of using the device, which can detect the linkage blocks corresponding to the height and width of the diaphragm roll by providing a displacement sensor, and find out the problems of the diaphragm roll by comparison, thereby solving the problem that the diaphragms cut during the slitting process will have burrs, wavy edges and sizes that do not meet the requirements. Currently, inspections are often carried out manually, resulting in large errors in the inspection standards, low efficiency, and technical problems that are prone to omissions.

[0022] 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

[0023] 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.

[0024] In the attached picture:

[0025] Figure 1 It is an overall schematic diagram of this application;

[0026] Figure 2 A side schematic diagram of the present application;

[0027] Figure 3 A schematic diagram of a mobile module of this application;

[0028] Figure 4 It is an overall schematic diagram of this application;

[0029] Figure 5 This is a schematic diagram of the baffle position of this application;

[0030] Figure 6 It is the overall front schematic diagram of this application;

[0031] Figure 7 For this application Figure 6 Enlarged schematic diagram of area A in the middle;

[0032] Figure 8 This is a schematic diagram of the linkage block of this application;

[0033] Fig. 9 A schematic diagram of the position of the diaphragm roll during transportation of the present application;

[0034] Fig.10 Another schematic diagram of the position of the diaphragm roll during transportation of the present application;

[0035] Among them, the reference numerals in the figure are:

[0036] 1. Frame; 11. Workbench; 12. Platform; 2. Displacement sensor; 3. Rotation module; 31. Motor; 32. Gearbox; 33. Fixed column; 34. Turntable; 4. Moving module; 41. Slider; 5. Diameter detection unit; 51. Crossbar; 52. First rotating column; 53. First rotating block; 54. Diameter baffle; 6. Height detection unit; 61. Extension plate; 62. Second rotating column; 63. Second rotating block; 64. Height baffle; 7. Slide; 71. Lower baffle; 72. Upper baffle; 8. Linkage block; 81. Lower card slot; 82. Upper card slot; 9. Diaphragm roll. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] like Figure 1-10 As shown, the present application provides a technical solution: a detection device for lithium battery diaphragm after slitting and a method of using the same, comprising a frame 1, on which are disposed at least two groups of moving modules 4, each of which is provided with a rotating module 3 for mounting a diaphragm roll 9, so that the moving module 4 drives the rotating module 3 to move linearly, and the rotating module 3 drives the diaphragm roll 9 to rotate;

[0040] A diameter detection unit 5 and a height detection unit 6 corresponding to the movable module 4 are arranged on the frame 1 along the traveling direction of the diaphragm roll 9. When the diaphragm roll 9 touches any part of the diameter detection unit 5 or the height detection unit 6 while traveling, the displacement detection unit will judge and analyze the diaphragm roll 9, thereby concluding that the problem with the diaphragm roll 9 is that the diameter or height is inconsistent with the standard.

[0041] The frame 1 includes a workbench 11 and a platform 12. The platform 12 is located above the workbench 11. The mobile module 4 is installed on the workbench 11. A slider 41 is slidably connected to the mobile module 4. The mobile module 4 drives the screw rod to rotate by driving power, thereby driving the slider 41 to move on the mobile module 4.

[0042] The rotating module 3 includes a gear box 32 fixedly connected to the top of the slider 41, the input end of the gear box 32 is connected to the motor 31, and the output end at the top of the gear box 32 is rotatably connected to a coaxially arranged fixed column 33 and a turntable 34, the fixed column 33 is at the top of the turntable 34, and the diaphragm roll 9 is installed on the fixed column 33.

[0043] The diameter detection unit 5 includes a cross bar 51 extending from the side of the frame 1 from the back to the front, and at least two groups of first rotating columns 52 are rotatably connected to the cross bar 51. The top of the first rotating column 52 is fixedly connected to a first rotating block 53 with a plurality of protrusions on the outer peripheral wall, and the bottom of the first rotating column 52 is fixedly connected to a diameter baffle 54, and the diameter baffle 54 is between the first rotating block 53 and the diameter baffle 54.

[0044] A plurality of diameter baffles 54 are arranged in sequence from the back to the front at intervals and their lengths gradually increase.

[0045] The height detection unit 6 includes an extension plate 61 extending from the top of the frame 1 from the back to the front, and at least two groups of second rotating columns 62 are rotatably connected to the extension plate 61. The left side of the second rotating column 62 is fixedly connected to a second rotating block 63 whose outer peripheral wall is provided with a plurality of protrusions, and the right side of the second rotating column 62 is fixedly connected to a height baffle 64, and the height baffle 64 is between the second rotating block 63 and the height baffle 64.

[0046] A plurality of height baffles 64 are arranged in sequence from the back to the front at intervals and their lengths gradually increase.

[0047] The displacement detection unit includes displacement sensors 2 corresponding to the number of the moving modules 4, and the displacement sensors 2 are fixedly connected to the front end of the platform 12;

[0048] An L-shaped slide 7 is fixedly connected between the cross bar 51 and the right side and the bottom of the extension plate 61, and a lower baffle 71 and an upper baffle 72 are fixedly connected to the slide 7. A plurality of linkage blocks 8 engaged with the first rotating block 53 and the second rotating block 63 are slidably connected to the slide 7, and the linkage blocks 8 are arranged between the lower baffle 71 and the upper baffle 72.

[0049] A lower card slot 81 corresponding to the protrusions on the first rotating block 53 is formed on the side of the linkage block 8 close to the cross bar 51, and an upper card slot 82 corresponding to the protrusions on the second rotating block 63 is formed on the side of the linkage block 8 close to the extension plate 61. The displacement sensor 2 can detect the movement of the linkage block 8.

[0050] In one embodiment, it is described how to inspect the slit membrane.

[0051] Step 1: Install the diaphragm roll to be tested

[0052] Specifically, the hollow part of the diaphragm roll 9 is installed on the fixing column 33 , and the bottom of the diaphragm roll 9 is located on the top of the turntable 34 , and the diaphragm roll 9 is fixed on the fixing column 33 .

[0053] Step 2: Control the diaphragm roll to move toward the detection area

[0054] Specifically, the drive assembly and the motor 31 are started, and the drive assembly drives the slider 41 to move from the back to the front, thereby causing the turntable 34 to move from the back to the front. Driven by the motor 31, the fixed column 33 and the turntable 34 drive the rotation of the diaphragm roll 9, so that the diaphragm roll 9 moves forward from the workbench 11 while rotating. When the slider 41 moves to the front end of the workbench 11, the diaphragm roll 9 will touch the front end diameter baffle 54 and the height baffle 64, so that the front end first rotating column 52 rotates and drives the corresponding first rotating block 53 to rotate, and the linkage block 8 connected to the first rotating block 53 will move. At the same time, the front end second rotating column 62 rotates and drives the corresponding second rotating block 63 to rotate, and the linkage block 8 connected to the second rotating block 63 will move.

[0055] Step 3: Sensor analysis and judgment of test results

[0056] Specifically, when the diaphragm roll 9 moves, the displacement sensor 2 will be activated. The displacement sensor 2 can detect the movement of each linkage block 8 on the slide 7 and transmit the signal to the control center. When the slider 41 moves to the front end of the workbench 11, the displacement sensor 2 will record the movement trajectory of the two front end linkage blocks 8, which is the trajectory of the normal diaphragm roll 9.

[0057] In one embodiment, when a defective diaphragm roll appears in step 2, a sensor makes a determination.

[0058] Specifically, when the diaphragm roll 9 moves from the back to the front, if it touches the diameter baffle 54 except the front end, it means that the width of the diaphragm roll 9 is too wide. If it touches the height baffle 64 except the front end, it means that the height of the diaphragm roll 9 is too high. At the same time, when the diaphragm roll 9 reaches the front end, compared with the front end linkage block 8, if the width of the diaphragm roll 9 is too wide, the track of the front end linkage block 8 corresponding to the first rotating block 53 should not be normal. If the height of the diaphragm roll 9 is too high, the track of the front end linkage block 8 corresponding to the second rotating block 63 should not be normal. The combination of the two confirms that the diaphragm roll 9 is too high or too wide.

[0059] When the diaphragm roll 9 moves from back to front, it touches the diameter baffle 54 except the front end, and touches the height baffle 64 except the front end. This means that the height of the diaphragm roll 9 is too high and the diameter is too wide. At the same time, when the diaphragm roll 9 reaches the front end, compared with the two linkage blocks 8 at the front end, if the moving distances of the two linkage blocks 8 are abnormal, the combination of the two confirms that the diaphragm roll 9 is both too high and too wide.

[0060] If the diaphragm roll 9 reaches the front end when moving from the back to the front, the front diameter baffle 54 and the height baffle 64 touch each other, driving the two linkage blocks 8 to rotate. After comparison by the displacement sensor 2, it is found that the trajectory of the front end linkage block 8 corresponding to the first rotating block 53 is abnormal, which means that the width of the diaphragm roll 9 does not meet the standard, and the trajectory of the front end linkage block 8 corresponding to the second rotating block 63 is abnormal, which means that the height of the diaphragm roll 9 does not meet the standard.

[0061] In summary, the device is equipped with a displacement sensor, which can detect the linkage blocks corresponding to the height and width of the diaphragm roll. By comparison, the problems of the diaphragm roll can be found, thereby solving the problems that the diaphragm will have burrs, wavy edges and sizes that do not meet the requirements during the slitting process. At present, inspections are often carried out manually, so the inspection standards produce large errors, are inefficient, and are prone to technical errors.

[0062] 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. A device for detecting lithium battery diaphragm after slitting, comprising a frame (1), characterized in that: The frame (1) is provided with at least two groups of movable modules (4), each of which is provided with a rotating module (3) for mounting a diaphragm roll (9), so that the movable module (4) drives the rotating module (3) to move linearly, and the rotating module (3) drives the diaphragm roll (9) to rotate; A diameter detection unit (5) and a height detection unit (6) corresponding to the movable module (4) are arranged on the frame (1) along the travel direction of the diaphragm roll (9). When the diaphragm roll (9) touches any part of the diameter detection unit (5) or the height detection unit (6) while traveling, the displacement detection unit will judge and analyze the diaphragm roll (9), thereby concluding that the problem of the diaphragm roll (9) is that the diameter or height is inconsistent with the standard.

2. The device for detecting lithium battery separator after slitting according to claim 1, characterized in that: The frame (1) comprises a workbench (11) and a platform (12), wherein the platform (12) is located above the workbench (11), and the movable module (4) is mounted on the workbench (11). A slider (41) is slidably connected to the movable module (4), and the movable module (4) drives the slider (41) to move on the movable module (4) by driving and transmitting power to the screw rod for rotation.

3. The device for detecting lithium battery separator after slitting according to claim 1, characterized in that: The rotating module (3) includes a gear box (32) fixedly connected to the top of the slider (41), the input end of the gear box (32) is connected to the motor (31), and the output end of the top of the gear box (32) is rotatably connected to a coaxially arranged fixed column (33) and a turntable (34), the fixed column (33) is at the top of the turntable (34), and the diaphragm roll (9) is installed on the fixed column (33).

4. The device for detecting lithium battery separator after slitting according to claim 1, characterized in that: The diameter detection unit (5) comprises a cross bar (51) extending from the side of the frame (1) from the back to the front, and at least two groups of first rotating columns (52) are rotatably connected to the cross bar (51), and the top of the first rotating column (52) is fixedly connected to a first rotating block (53) with a plurality of protrusions on the outer peripheral wall, and the bottom of the first rotating column (52) is fixedly connected to a diameter baffle (54), and the diameter baffle (54) is between the first rotating block (53) and the diameter baffle (54); The plurality of diameter baffles (54) are arranged in sequence from the back to the front at intervals and their lengths gradually increase.

5. The device for detecting lithium battery separator after slitting according to claim 1, characterized in that: The height detection unit (6) comprises an extension plate (61) extending from the top of the frame (1) from the back to the front, and at least two groups of second rotating columns (62) are rotatably connected to the extension plate (61), and the left side of the second rotating column (62) is fixedly connected to a second rotating block (63) having a plurality of protrusions on the outer peripheral wall, and the right side of the second rotating column (62) is fixedly connected to a height baffle (64), and the height baffle (64) is between the second rotating block (63) and the height baffle (64); The plurality of height baffles (64) are arranged in sequence from the back to the front at intervals and their lengths gradually increase.

6. The device for detecting lithium battery separator after slitting according to claim 1, characterized in that: The displacement detection unit comprises displacement sensors (2) corresponding in number to the number of the movable modules (4); the displacement sensors (2) are fixedly connected to the front end of the platform (12).

7. The device for detecting lithium battery separator after slitting according to claim 4, characterized in that: An L-shaped slide (7) is fixedly connected between the cross bar (51) and the right side and the bottom of the extension plate (61); a lower stop bar (71) and an upper stop bar (72) are fixedly connected to the slide (7); a plurality of linkage blocks (8) meshing with the first rotating block (53) and the second rotating block (63) are slidably connected to the slide (7); and the linkage blocks (8) are arranged between the lower stop bar (71) and the upper stop bar (72).

8. The device for detecting lithium battery separator after slitting according to claim 7, characterized in that: A lower clamping groove (81) corresponding to a plurality of protrusions on the first rotating block (53) is provided on a side of the linkage block (8) close to the crossbar (51), and an upper clamping groove (82) corresponding to a plurality of protrusions on the second rotating block (63) is provided on a side of the linkage block (8) close to the extension plate (61). The displacement sensor (2) can detect the movement of the linkage block (8).

9. A method for using a device for detecting a lithium battery diaphragm after slitting, using the device for detecting a lithium battery diaphragm after slitting as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Install the diaphragm roll that needs to be tested; Step 2: Control the diaphragm roll to move toward the detection area; Step 3: The sensor analyzes and determines the detection results.

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