Device for realizing automatic coating by monitoring foil plate shape

Abstract

The utility model relates to the field of lithium ion battery manufacturing, in particular to a slurry coating process, and particularly relates to a device for realizing automatic coating by monitoring a foil plate type. A sliding rail and a sliding block are arranged on the fixing frame, a displacement sensor and an air blowing device are arranged in the side direction of the sliding block, and the position of a point, blown to the foil, of the air blowing device is consistent with the position of a detection point of the displacement sensor. The device is simple to install, can accurately identify the fluctuation of the edge plate shape of the foil, reduces the waste caused by poor coating appearance, coating omission and blank and trailing, and greatly improves the qualified rate of products.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion battery manufacturing, in particular to a slurry coating process, and specifically to a device for realizing automatic coating by monitoring the plate shape of a foil material. Background Art

[0002] At present, lithium-ion batteries have been widely used in various electronic products, power tools and electric vehicles. The coating process is very important in the manufacturing process of lithium-ion batteries. The pass rate of this process directly affects the overall pass rate of the subsequent process. The factors that affect the coating appearance include the viscosity of the slurry, the solid content of the slurry, the foil plate shape, the oven temperature, the coating speed and the exhaust volume; the foil plate shape is the key factor. The plate shape fluctuation will cause defective products such as missing coating and white tailing. The laser displacement sensor monitors the plate shape changes and adjusts the coating machine in real time, which can effectively reduce the waste of slurry and improve the product pass rate. Utility Model Content

[0003] The purpose of the utility model is to provide a device for automatic coating by monitoring the foil shape to address the poor appearance of coated electrodes caused by poor foil shape. The device has a simple structure and strong stability and can be applied to foils of different widths and different materials (aluminum foil, copper foil), thereby improving the work efficiency of operators and the product qualification rate.

[0004] In order to achieve the purpose of the utility model, the following technical scheme will be adopted: a device for automatic coating by monitoring the plate shape of the foil, a slide rail and a slider are provided on the fixed frame, a laser displacement sensor and an air blowing device are provided on the side of the slider, and the point where the air blowing device blows onto the foil is consistent with the position of the detection point of the laser displacement sensor.

[0005] In the above-mentioned device for realizing automatic coating by monitoring the foil shape, two blowing devices are symmetrically arranged on the fixed frame.

[0006] The above-mentioned device for realizing automatic coating by monitoring the foil shape, the air blowing device comprises an air blowing pipe, an air pressure regulating valve and an air source.

[0007] In the above-mentioned device for realizing automatic coating by monitoring the foil shape, the inner diameter of the air blowing pipe is 2.5 mm.

[0008] In the above-mentioned device for realizing automatic coating by monitoring the foil shape, the angle between the blowing direction of the blowing device and the vertical direction is 53°.

[0009] In the above-mentioned device for realizing automatic coating by monitoring the shape of foil material, an L-shaped bracket is arranged on the side of the slide block, and the displacement sensor is located above the horizontal plate of the L-shaped bracket.

[0010] In the above-mentioned device for realizing automatic coating by monitoring the foil shape, a positioning pin is arranged above the sliding block.

[0011] The above-mentioned device for realizing automatic coating by monitoring the foil shape also includes a data line and a computer.

[0012] Compared with judging the foil shape by human eyes, the utility model is more accurate and intuitive, has a short feedback time and greatly improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the structure of a device for realizing automatic coating by monitoring the foil shape.

[0014] Figure 2 This is an enlarged view of the laser displacement sensor position.

[0015] Figure 3 It is a schematic diagram of a gas regulating valve.

[0016] Reference numerals:

[0017] 501, laser displacement sensor; 502, air blowing device; 503, data line; 504, fixing bracket; 505, air pressure regulating valve; 506, air blowing pipe; 507, L-shaped bracket; 508, slider; 509, positioning pin; 510, slide rail; 511, foil. DETAILED DESCRIPTION

[0018] like Figure 1-Figure 3 As shown, a device for realizing automatic coating by monitoring the foil shape includes a data line 503 and a computer, a fixed frame 504 is arranged above the foil 511, a slide rail 510 and a slider 508 are arranged on the fixed frame 504, two laser displacement sensors 501 and two air blowing devices 502 are arranged on the side of the slider 508, and a positioning pin 509 capable of positioning the slider is arranged above the slider 508. An L-shaped bracket 507 is arranged on the side of the slider 508, and the laser displacement sensor 501 is located above the horizontal plate of the L-shaped bracket 507. The point blown by the air blowing device 502 on the foil 511 is consistent with the position of the detection point of the laser displacement sensor 501. The laser displacement sensor 501 is 40 mm away from the edge of the foil 511, and the air blowing device 502 includes an air blowing pipe 506, an air pressure regulating valve 505 and an air source. The inner diameter of the air blowing pipe is 2.5 mm. The angle between the air blowing direction of the air blowing device 502 and the vertical direction is 53°. The air pressure regulating valve 505 is arranged on the right side of the fixed bracket, and the air outlet pressure is set to 0.1 MPa.

[0019] The blowing point of the blowing device 502 is highly coincident with the laser detection point, the original coordinate of the laser detection is 25mm, and the data collected by the laser displacement sensor 501 is transmitted to the computer software through the data line 503. The computer is connected to the main operation interface of the coating machine, and real-time collection and real-time display are adopted. If the set upper limit is exceeded, the coating machine will display an alarm.

[0020] A positioning pin 509 is provided above the slider 508 to position the slider 508. The slider 508, the laser displacement sensor 501 and the blowing device 502 can be moved according to the width of the foil 511 to be coated. When the designated position is reached, the positioning pin 509 is used for positioning.

[0021] When in use, adjust the position of the slider 508 on the slide rail 510 according to the width of the foil 511 (the detection point of the laser displacement sensor 501 is 40mm away from the edge of the foil 511), and use the positioning pin 509 for positioning. Turn on the laser displacement sensor 501, make the blowing point of the blowing device 502 overlap with the laser detection point, and the laser detection original coordinate is 25mm. Connect the air pressure regulating valve 505, set the pressure to 0.1Mpa, and then turn on the blowing device 502 to blow the foil 511 to a stable state. Turn on the computer and open the software, and the coating machine is ready for work. Start coating, and the laser detection data is transmitted to the computer software in real time (collected once every 1s) through the data line 503. The deviation of the laser detection coordinate data is within the range of ±2, and the coating machine works normally; when the deviation reaches ±4, the coating machine operation interface alarms, the coating valve is closed, and the foil 511 works normally; when the deviation returns to ±2, the coating valve works normally.

[0022] Compared with judging the foil shape by human eyes, the utility model is more accurate and intuitive, has a short feedback time and greatly improves the work efficiency.

Claims

1. A device for automatic coating by monitoring the foil shape, characterized in that: A slide rail (510) and a slider (508) are provided on the fixed frame (504); a laser displacement sensor (501) and an air blowing device (502) are provided on the side of the slider (508); the point on the foil material (511) blown by the air blowing device (502) is consistent with the position of the detection point of the laser displacement sensor (501).

2. The device for realizing automatic coating by monitoring the foil shape according to claim 1, characterized in that: Two air blowing devices (502) are symmetrically arranged on the fixing frame (504).

3. The device for realizing automatic coating by monitoring the foil shape according to claim 1, characterized in that: The air blowing device (502) comprises an air blowing pipe (506), an air pressure regulating valve (505) and an air source.

4. The device for realizing automatic coating by monitoring the foil shape according to claim 1, characterized in that: The inner diameter of the air blowing tube is 2.5 mm.

5. The device for realizing automatic coating by monitoring the foil shape according to claim 1, characterized in that: The included angle between the blowing direction of the blowing device (502) and the vertical direction is 53°.

6. The device for realizing automatic coating by monitoring the foil shape according to claim 1, characterized in that: An L-shaped bracket (507) is arranged on the side of the sliding block (508), and the laser displacement sensor (501) is located above the horizontal plate of the L-shaped bracket (507).

7. The device for realizing automatic coating by monitoring the foil shape according to claim 1, characterized in that: A positioning pin (509) is provided above the slider (508).

8. The device for realizing automatic coating by monitoring the foil shape according to claim 1, characterized in that: Also included is a data cable (503) and a computer.

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