Cell surface coating thickness measuring device

Abstract

The utility model discloses a thickness measuring device for a surface coating of a battery cell, and belongs to the technical field of detection tools. The device comprises a thickness detection assembly and a carrying assembly which are arranged on a platform, the thickness detection assembly is provided with a height adjusting device, and the height adjusting device is provided with a photoelectric sensor used for detecting the thickness of a coating on the surface of a battery cell; the carrying assembly is in sliding connection with the platform, and the carrying assembly is used for conveying a to-be-detected battery cell to the photoelectric sensor and detecting the thickness of a surface coating of the battery cell; according to the utility model, the height adjusting device and the carrying assembly are matched with the photoelectric sensor, so that the thickness of the surface coating of the cylindrical battery cell is detected in a non-contact manner, and the production quality of the battery cell is improved.

Description

Technical Field

[0001] This utility model relates to a device for measuring the thickness of the coating on the surface of a battery cell, belonging to the field of testing tooling technology. Background Technology

[0002] In the power battery industry, inkjet printing technology for insulating layers on battery cells is an emerging battery manufacturing process. It involves coating UV-cured insulating materials onto the cell surface using inkjet printing, forming a coating with excellent insulating properties. This effectively improves the cell's safety performance and cycle life. The coating thickness directly affects the cell's insulation performance; uneven thickness can lead to decreased voltage withstand and corrosion resistance, and even affect the internal structural strength of the CTP battery pack.

[0003] Currently, the production line uses a handheld film thickness tester for contact testing, which is slow and poses a risk of damaging the coating surface, affecting the quality of battery cell production. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for measuring the thickness of the coating on the surface of a battery cell. By using a height adjustment device and a carrier component in conjunction with a photoelectric sensor, the device can perform non-contact thickness measurement of the coating on the surface of a cylindrical battery cell, thereby improving the quality of battery cell production.

[0005] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution:

[0006] A battery cell surface coating thickness measuring device includes a thickness detection component and a transport component mounted on a platform. The thickness detection component is equipped with a height adjustment device, and the height adjustment device is equipped with a photoelectric sensor for detecting the thickness of the battery cell surface coating.

[0007] The carrier component is slidably connected to the platform. The carrier component is used to transport the battery cell under test to the photoelectric sensor to detect the thickness of the coating on the surface of the battery cell.

[0008] The above technical solution involves transporting the battery cell under test to the bottom of the photoelectric sensor via a carrier component. The photoelectric sensor then detects the coating thickness on the battery cell surface in a non-contact manner. This method is highly applicable, effectively controls the uniformity of the battery cell surface thickness, and improves the quality of battery cell production.

[0009] Optionally, the thickness detection component is further provided with a cell cleaning component. The cell cleaning component includes an air knife bracket mounted on a height adjustment device. The air knife bracket is connected to an ion air knife. The ion air knife is electrically connected to an ion generator. An air pipe is installed inside the air knife bracket and connected to the ion air knife to supply compressed air for cleaning the surface of the cell to be tested.

[0010] The above technical solution involves cleaning the battery cell using a battery cell cleaning component before measuring the coating thickness on the cell surface. This process removes dust from the cell surface, prevents false measurements, and improves the accuracy of the measurement.

[0011] Optionally, the height adjustment device includes a gantry frame mounted on a platform, a thickness measuring base plate mounted on the crossbeam of the gantry frame, a thickness measuring slide table slidably connected to the thickness measuring base plate, a thickness measuring servo motor mounted on the thickness measuring base plate, a thickness measuring lead screw mounted at the output end of the thickness measuring servo motor, the thickness measuring lead screw and the thickness measuring slide table being connected by a fixed base, and a photoelectric sensor mounted on the thickness measuring slide table via a mounting bracket. The thickness measuring servo motor rotates the thickness measuring lead screw, thereby driving the thickness measuring slide table to move up and down to adjust the height.

[0012] The above technical solution: The thickness measuring servo motor drives the thickness measuring screw to rotate, which in turn drives the thickness measuring slide to move up or down, thereby adjusting the detection height, facilitating the measurement of battery cells of different heights and increasing the applicability of the device.

[0013] Optionally, the thickness measuring substrate and the thickness measuring slide are slidably connected by the thickness measuring slide and the thickness measuring guide rail, wherein one of the thickness measuring slide and the thickness measuring guide rail is mounted on the thickness measuring substrate and the other is mounted on the thickness measuring slide.

[0014] The above technical solution uses a slide table and guide rail to achieve sliding, making the sliding smooth and improving sliding stability.

[0015] Optionally, the transport component includes a transport base plate slidably connected to the platform. The transport base plate is equipped with a transport motor, and the output end of the transport motor is provided with a transport lead screw. The transport lead screw is connected to the transport base plate through a fixed seat. The transport motor drives the transport lead screw to rotate, so that the transport base plate moves on the platform.

[0016] The above technical solution involves a transport component that, together with a material handling claw, transports the battery cell to be tested to a position that can be detected by a photoelectric sensor, and then rotates it in conjunction with a clamping and rotating component, achieving comprehensive cleaning through a battery cell cleaning component.

[0017] Optionally, the carrier base plate and the platform are slidably connected by a carrier slide rail and a carrier slider, one of which is disposed on the carrier base plate and the other on the platform.

[0018] The above technical solution uses a carrier slide rail and a carrier slider to achieve sliding, making the sliding smooth and improving sliding stability.

[0019] Optionally, the carrier substrate is provided with a feeding claw for placing the battery cell to be tested. The feeding claw is connected to a telescopic cylinder and is equipped with a clamping and rotating assembly for clamping and rotating the battery cell to be tested.

[0020] The above technical solution involves using a material handling claw to lift the battery cell under test, and then using a telescopic cylinder to lift the battery cell to the position of the flexible clamping head for easy and clear rotation.

[0021] Optionally, the clamping and rotating assembly includes a flexible clamping head, a clamping upright plate, a linear electric cylinder, a slide table, and a slide rail. The clamping upright plate is located on both sides of the telescopic cylinder. The flexible clamping head is installed on the upper end of the clamping upright plate on one side. The linear electric cylinder and the slide rail are fixedly installed on the carrier base plate. The slide table is slidably connected to the slide rail. The output end of the linear electric cylinder is fixedly connected to the slide table through a connector. The linear electric cylinder drives the clamping upright plate on one side, causing the flexible clamping head to move closer to or away from the battery cell under test, so as to clamp or release the battery.

[0022] The above technical solution: The rotating component is used to fix the battery cell, which can prevent the battery cell from falling off the feeding claw during transportation and improve safety.

[0023] Optionally, a drive shaft is mounted on the upper end of another clamping plate via a bearing. The drive shaft is connected to the output end of a rotary motor via a drive belt. When the flexible clamping head clamps the battery cell, the rotary motor rotates and drives the battery cell to rotate via the drive shaft.

[0024] The above technical solution: By rotating the motor, the dust on the surface of the battery cell can be completely cleaned, preventing false detection.

[0025] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0026] This invention improves the quality of battery cell production by using a height adjustment device in conjunction with a transport component and a photoelectric sensor to address the risk of damage to the coating surface caused by touch detection.

[0027] This invention uses a clamping and rotating assembly to clamp and rotate different battery cells, which, in conjunction with a photoelectric sensor, allows for measurement of the measurement range. Furthermore, by moving the transport assembly on the platform, it can measure the coating thickness at any point on the surface of the battery cell as needed.

[0028] This invention cleans the surface of the battery cell before measurement using a battery cell cleaning component and employs a non-contact measurement method, thereby avoiding measurement errors caused by dirt and improving measurement accuracy. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the axial structure of the device of this utility model;

[0030] Figure 2 This is an axial schematic diagram of the battery cell transport and clamping rotation assembly in the device of this utility model;

[0031] Figure 3This is an axial schematic diagram of the battery cell cleaning and thickness detection components in the device of this utility model.

[0032] In the diagram: 1. Flexible clamping head; 2. Drive shaft; 3. Bearing; 4. Rotary motor; 5. Drive belt; 6. Clamping plate; 7. Linear electric cylinder; 8. Slide table; 9. Slide rail; 10. Material conveying claw; 11. Telescopic cylinder; 12. Cylinder flange block; 13. Carrier base plate; 14. Carrier motor; 15. Carrier slider; 16. Carrier lead screw; 17. Carrier slide rail; 18. Ion air knife; 19. Ion generator; 20. Air knife bracket; 21. Air pipe; 22. Gantry frame; 23. Thickness measuring base plate; 24. Thickness measuring servo motor; 25. Thickness measuring servo motor support; 26. Thickness measuring lead screw; 27. Thickness measuring lead screw fixing seat; 28. Thickness measuring slide table; 29. ​​Photoelectric sensor; 30. Mounting bracket; 31. Platform. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] Example 1, such as Figures 1-3As shown, a battery cell surface coating thickness measurement device is disclosed, including a thickness detection component and a transport component mounted on a platform. The thickness detection component is equipped with a height adjustment device, and the height adjustment device is equipped with a photoelectric sensor for detecting the thickness of the battery cell surface coating. The sensor is mounted via a sensor mounting bracket 30, which is fixed to a thickness measurement slide 28. In this embodiment, the photoelectric sensor 29 is a common spectroscopic interferometry sensor. In this embodiment, a Keyence SI-F80 model spectroscopic interferometry sensor can be used. The principle of spectroscopic interferometry for measuring film thickness is mainly based on the phenomenon of light interference. When light waves irradiate the coating, part of the light is reflected at the surface of the film, and another part of the light penetrates the film and is reflected at the interface between the film and the bottom layer. The light reflected simultaneously from the surface and bottom of the film by these two parts will cause interference, that is, they superimpose or cancel each other out, forming a specific interference light intensity distribution. By analyzing this interference light intensity distribution and then performing waveform analysis, the receiver can determine the precise thickness of the coating.

[0036] The carrier component is slidably connected to the platform, and the carrier component is used to transport the battery cell to be tested to the photoelectric sensor 29 to detect the thickness of the coating on the surface of the battery cell.

[0037] In this embodiment, the battery cell to be tested is transported to the bottom of the photoelectric sensor by a carrier component. The photoelectric sensor detects the thickness of the coating on the surface of the battery cell. This method has strong applicability, effectively controls the uniformity of the surface thickness of the battery cell, and improves the quality of battery cell production.

[0038] In this embodiment, the thickness detection component is further provided with a cell cleaning component. The cell cleaning component includes an air knife bracket 20 mounted on a height adjustment device. The air knife bracket 20 is connected to an ion air knife 18. The ion air knife 18 is electrically connected to an ion generator 19. The ion generator 19 is mounted on a carrier substrate 13. An air pipe 21 is installed inside the air knife bracket and connected to the ion air knife 18 to supply compressed air for cleaning the surface of the cell to be tested.

[0039] like Figure 3 As shown, the air knife bracket 20 is installed at both ends of the thickness measuring slide 28. An ion air knife 18 is set at the far end of the air knife bracket 20. The battery cell to be tested is first cleaned, and then the battery cell to be tested is moved to the thickness measuring photoelectric sensor 29 by the carrier component for thickness measurement.

[0040] The above-mentioned technical solution in this implementation is as follows: Before measuring the coating thickness on the surface of the battery cell, a battery cell cleaning component is used to clean the battery cell, which removes dust from the surface of the battery cell, prevents false measurements, and improves the accuracy of the measurement.

[0041] In the specific implementation process of the embodiments, such as Figure 3As shown, the height adjustment device includes a gantry frame 22 mounted on a platform. A thickness measuring base plate 23 is mounted on the crossbeam of the gantry frame 22. A thickness measuring slide 28 is slidably connected to the thickness measuring base plate 23. A thickness measuring servo motor 24 is provided on the thickness measuring base plate 23. A thickness measuring screw 26 is provided at the output end of the thickness measuring servo motor 24. The thickness measuring screw 26 and the thickness measuring slide 28 are connected by a fixed seat thread. The photoelectric sensor 29 is mounted on the thickness measuring slide through a mounting bracket 30. By rotating the thickness measuring screw 26 through the thickness measuring servo motor 24, the thickness measuring slide 28 is moved up and down to adjust the height.

[0042] The above-mentioned technical solution in this embodiment is as follows: the thickness measuring servo motor drives the thickness measuring screw to rotate, which in turn drives the thickness measuring slide to move up or down, thereby adjusting the detection height, facilitating the measurement of battery cells of different heights and increasing the applicability of the device.

[0043] Optionally, the thickness measuring substrate and the thickness measuring slide are slidably connected by the thickness measuring slide and the thickness measuring guide rail, wherein one of the thickness measuring slide and the thickness measuring guide rail is mounted on the thickness measuring substrate and the other is mounted on the thickness measuring slide.

[0044] The above technical solution uses a slide table and guide rail to achieve sliding, making the sliding smooth and improving sliding stability.

[0045] In the specific implementation process of the embodiments, such as Figure 2 The transport assembly shown includes a transport base plate 13 slidably connected to the platform. A transport motor 14 is mounted on the transport base plate 13, and a transport lead screw 16 is provided at the output end of the transport motor 14. The transport lead screw 16 is threadedly connected to the transport base plate 13 via a fixed seat. The transport motor 14 drives the transport lead screw 16 to rotate, causing the transport base plate 13 to move on the platform 31. Figure 2 As shown, "movement" here refers to moving back and forth, that is, moving closer to or away from the cleaning component and photoelectric sensor 29.

[0046] In the above technical solution of the embodiment: the transport component, together with the material transport claw, transports the battery cell to be tested to a position that can be detected by the photoelectric sensor, and rotates it with the clamping and rotating component, and achieves comprehensive cleaning through the battery cell cleaning component.

[0047] In the specific implementation process of the embodiments, such as Figure 2 As shown, the carrier base plate 13 and the platform 31 are slidably connected by a carrier slide rail 17 and a carrier slider 15. One of the carrier slide rail 17 and the carrier slider 15 is provided on the carrier base plate 13 and the other is provided on the platform 31. It is worth noting that at least 4 carrier slide rails 17 are provided to make it more stable. The corresponding number of carrier sliders 15 are matched. The carrier base plate 13 is moved by rotating the carrier motor 14 and rotating the carrier screw 16.

[0048] The above technical solution uses a carrier slide rail and a carrier slider to achieve sliding, making the sliding smooth and improving sliding stability.

[0049] In the specific implementation of the embodiment, the carrier substrate 13 is provided with a feeding claw 10 for placing the battery cell to be tested. The feeding claw 10 is connected to a telescopic cylinder 11. The feeding claw 10 is equipped with a clamping and rotating assembly. The clamping and rotating assembly is used to clamp the battery cell to be tested. The feeding claw lifts the battery cell to be tested, and the telescopic cylinder lifts the battery cell to be tested to the position of the flexible clamping head, which facilitates clear rotation. The clamping and rotating assembly includes a flexible clamping head 1, a clamping upright plate 6, a linear electric cylinder 7, a slide table 8, and a slide rail 9. The clamping upright plate 6 is located on both sides of the telescopic cylinder 11, so there are two clamping upright plates 6, one of which is located on the slide table 8. As the linear electric cylinder 7 extends and retracts, the slide table 8 and the slide rail 9 can move. The flexible clamping head 1 is installed on the upper end of the clamping upright plate 6 on one side. The linear electric cylinder 7 and the slide rail 9 are fixedly installed on the carrier base plate 13. The slide table 8 and the slide rail 9 are slidably connected. The output end of the linear electric cylinder 7 is fixedly connected to the slide table 8 through a connector. The linear electric cylinder 7 drives the clamping upright plate 6 on one side, causing the flexible clamping head 1 to move closer to or away from the battery cell to be tested, so as to clamp or release the battery. In this embodiment, the above technical solution is that the clamping and rotating assembly is used to fix the battery cell and can prevent the battery cell from falling off the transport claw during transport, thereby improving safety.

[0050] Example 2, as Figure 2 As shown, the difference between this embodiment and embodiment 1 is that a transmission shaft is installed on the upper end of another clamping plate 6 via a bearing 3. The transmission shaft is connected to the output end of a rotary motor via a transmission belt. When the flexible clamping head clamps the battery cell, the rotary motor rotates and drives the battery cell to rotate via the transmission shaft. The rotation of the motor can completely clean the dust on the surface of the battery cell and prevent false detection.

[0051] Working principle: First, the battery cell is placed on the conveying claw. The battery cell transport component transports the battery cell to the cleaning point. Then, the battery cell is lifted to a fixed height by the upward drive of the telescopic cylinder. Next, the clamping plate drives the flexible clamping heads to move closer together to clamp the battery cell. The rotary motor drives the drive shaft to rotate through the transmission belt, causing the battery to rotate clockwise. Then, the battery cell cleaning component performs ion air knife cleaning on the surface of the battery cell. Finally, the thickness detection component measures the thickness of the coating on the surface of the battery cell.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electrical cell surface coating thickness gauge comprising, The thickness detection assembly is provided on the platform, and the height adjusting device is provided with a photoelectric sensor for detecting the thickness of the surface coating of the battery cell. The carrying assembly is in sliding connection with the platform, and is used to transport the battery cell to be detected to the photoelectric sensor to detect the thickness of the surface coating of the battery cell.

2. The apparatus of claim 1, wherein the apparatus is configured to measure the thickness of the coating on the surface of the battery cell by, The thickness detection assembly is further provided with a battery cell cleaning assembly, which comprises a wind knife support provided on the height adjusting device, and the wind knife support is connected with an ion wind knife.

3. The apparatus of claim 1 wherein, The height adjusting device comprises a portal frame provided on the platform, a thickness measuring base plate is installed on the portal frame, the thickness measuring base plate is in sliding connection with a thickness measuring sliding table, a thickness measuring servo motor is arranged on the thickness measuring base plate, a thickness measuring screw rod is arranged at the output end of the thickness measuring servo motor, the thickness measuring screw rod is connected with the thickness measuring sliding table through a fixing seat, and the photoelectric sensor is arranged on the thickness measuring sliding table through a mounting bracket.

4. The apparatus of claim 3, wherein the apparatus further comprises a first electrode and a second electrode, the first electrode and the second electrode being configured to apply a voltage to the surface of the battery cell. The thickness measuring base plate and the thickness measuring sliding table are in sliding connection through the thickness measuring sliding table and a thickness measuring guide rail.

5. The apparatus of claim 1 wherein, The carrying assembly comprises a carrying base plate in sliding connection with the platform, the carrying base plate is provided with a carrying motor, the output end of the carrying motor is provided with a carrying screw rod, the carrying screw rod is connected with the carrying base plate through a fixing seat, and the carrying motor drives the carrying screw rod to rotate, so that the carrying base plate moves on the platform.

6. The apparatus of claim 5 wherein, The carrying base plate and the platform are in sliding connection through a carrying sliding rail and a carrying sliding block.

7. The apparatus of claim 5 wherein, The carrying base plate is provided with a material carrying claw for placing the battery cell to be detected, the material carrying claw is connected with a telescopic air cylinder, and the material carrying claw is provided with a clamping and rotating assembly.

8. The apparatus of claim 7 wherein, The clamping and rotating assembly comprises a flexible clamping head, a clamping upright plate, a linear electric cylinder, a sliding table and a sliding rail.

9. The cell surface coating thickness gauge of claim 8, wherein, The upper end of the other clamping upright plate is provided with a transmission shaft through a bearing, the transmission shaft is connected with the output end of a rotating motor through a transmission belt, and when the flexible clamping head clamps the battery cell, the rotating motor rotates to drive the battery cell to rotate through the transmission shaft.

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