Cleaning and etching equipment for high-speed moving pole piece material through laser energy storage directional irradiation and method of cleaning and etching equipment
The equipment and method using laser energy storage for directional irradiation have solved the problems of low efficiency and high cost of laser cleaning equipment in the new energy battery industry, achieving efficient etching and cleaning of high-speed moving electrode materials, reducing equipment costs and improving production efficiency.
Patent Information
- Application Number
- CN202511341565.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2025-12-26
AI Technical Summary
Existing laser cleaning equipment in the new energy battery industry suffers from low cleaning efficiency, high equipment cost, and large space occupation, especially in the static positioning cleaning and etching process of high-speed moving electrode materials.
Using laser energy storage and directional irradiation, a laser, beam expander, polarization system, field lens, and sensing device are used to achieve high-speed cleaning and etching of electrode materials. The flat-head laser source and polarization system are used to adjust the spot position, and a motion platform driven by a high-precision servo motor is used to detect the electrode position and marking points in real time, so as to achieve efficient etching and cleaning.
It achieves efficient etching and cleaning of high-speed moving electrode materials, with a spot positioning accuracy of less than ±0.2mm, which improves production efficiency, simplifies operation procedures, and reduces equipment costs.
Smart Images
Figure CN121198680A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of laser cleaning, in particular to a laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching device and method. BACKGROUND
[0002] The laser cleaning positive and negative pole piece machine in the new energy battery industry belongs to static positioning cleaning, and the use method is to realize by continuous laser scribing or continuous spot dotting in the material area 2 of the Gaussian wave peak laser source 1 (please refer to Figure 1 ), the cleaning efficiency is low, the speed is slow, the scribing is easy to cause residual foreign matter on the cleaning surface due to the distance and energy difference of the superposed lines, and the static laser cleaning or etching needs to be done with a walking belt stop platform and a sheet storage mechanism, the device mechanism occupies space and increases the equipment cost. Since the quality problem and the equipment cost are the survival basis of enterprises, we need to make the greatest effort to improve the production efficiency and reduce the cost investment. SUMMARY
[0003] The present application relates to the technical field of laser cleaning, in particular to a laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching device and method.
[0004] The technical solution adopted by the present application to solve its technical problems is: In a first aspect, the present application provides a laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching device, comprising a laser, a beam expansion system, a polarization system, a field lens and a sensing device, the light source emitted by the laser is a flat head laser source, the beam expansion system is connected with the laser and the polarization system, the polarization system is an optical assembly for controlling or adjusting the polarization state of the laser, the field lens is arranged at the bottom of the polarization system, the central axis of the field lens is perpendicular to the surface of the walking belt, the field lens is used for focusing the laser beam reflected by the polarization system on the working plane, and correcting the light beam position distortion caused by the swing of the polarization system, thereby directly affecting the precision, speed and light spot quality of the laser processing / measuring, and the sensing device is located on one side of the field lens, and the light source irradiates the pole piece material on the walking belt through the sensing device.
[0005] Further, the laser is a pulsed fiber laser or an ultraviolet laser.
[0006] Further, the sensing device is a CCD camera or a laser sensor.
[0007] In a second aspect, the present application provides a cleaning method of the laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching device as described in any one of the above, comprising the following steps: Step 1: flatten the pole piece material on the walking belt, and ensure the uniform speed of the pole piece by the high-precision servo motor or linear motor driven motion platform; Step 2: Adjusting the optical components of the laser polarization state through the polarization system control or adjustment, and then adjusting the light spot to follow the light spot position and irradiation; Step 3: Real-time detection of the pole piece position and the marker point through the sensing device; Step 4: Laser motion cleaning of the pole piece material; Step 5: After the cleaned pole piece material is dusted, it is wound up.
[0008] In summary, the beneficial effects of the present application are: The laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching equipment and method of the present application first etches and cleans the high-speed moving pole piece material, the moving speed of the polarization system light spot is greater than the moving speed of the pole piece material, so as to achieve controllable positioning; after the etching and cleaning area is positioned, the laser positioning point can follow the pole piece material movement, and the area etching and cleaning with a positioning offset less than ±0.2mm is directly completed. When the etching and cleaning position of the article is captured, the laser emits strong irradiation, performs laser high-energy flat head light source irradiation, and achieves non-stagnant cleaning. The material is instantaneously broken and falls off under high-energy irradiation, leaving a clean foil surface or a flat pit.
[0009] Secondly, the pole piece position and the marker point can be detected in real time, the light spot position following and irradiation are performed through the polarization system adjustment light spot instruction, and the etching and cleaning are completed at one time when the energy reaches a certain degree. When the light beam area needs to be adjusted, multiple laser beams are gathered according to the actual needs to adjust the required area or shape, or the light beam area is adjusted by adjusting the optical distance. When the etching or cleaning depth needs to be adjusted, the operation is simple, the production efficiency is improved, and the etching or cleaning depth can be adjusted by adjusting the wave peak of the laser. BRIEF DESCRIPTION OF DRAWINGS
[0010] The present application will be further described below in combination with the drawings and examples.
[0011] Figure 1 It is a structure schematic diagram of the existing laser cleaning positive and negative pole pieces; Figure 2 It is a structure schematic diagram of the laser cleaning positive and negative pole pieces of the present application; Figure 3 It is a cooperation relationship schematic diagram of the cleaning and etching equipment and the material belt of the present application; Figure 4 It is a schematic diagram of the cleaning and etching equipment of the present application after dotting the pole piece; Figure 5 It is a schematic diagram of the cleaning and etching equipment of the present application after scribing and etching cleaning of the pole piece; Figure 6 It is a schematic diagram of the cleaning and etching equipment of the present application after etching and cleaning of the pole lug groove; Figure 7 Structure diagram of the cleaning and etching device of the present application; Figure 8 Process flow diagram of the cleaning and etching device of the present application.
[0012] Reference signs: Gaussian peak laser source 1, material area 2, flat-top laser source 3, laser 4, beam expansion system 5, polarization system 6, field lens 7, sensing device 8, light source 9, walking belt 10. DETAILED DESCRIPTION
[0013] The present application will now be further described in detail with reference to the drawings. These drawings are simplified schematic diagrams and only show the basic structure of the present application in a schematic manner, and thus only show the components related to the present application.
[0014] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0015] Please refer to Figures 2-7 , in a first aspect, the present application discloses a kind of cleaning and etching equipment of laser energy storage directional irradiation high-speed moving pole piece material, including laser 4, beam expansion system 5, polarization system 6, field lens 7 and sensing device 8, the light source emitted by the laser is flat-top laser source 3, the beam expansion system is connected the laser and the polarization system, the polarization system is used to control or adjust the optical assembly of laser polarization state, the field lens is located at the bottom of the polarization system, the central axis of the field lens and the surface of walking belt 10 are perpendicular, the field lens is used to focus the laser beam reflected by the polarization system to working plane, simultaneously correct the light beam position distortion caused by polarization system swing, in turn can directly affect the precision, speed and light spot quality of laser processing / measurement, the sensing device is located in one side of the field lens, light source 9 is irradiated to the pole piece material on the walking belt via the sensing device.
[0016] In one embodiment, the laser is a pulse fiber laser (high precision, small thermal influence) or an ultraviolet laser (suitable for fine cleaning).
[0017] It can be understood that the laser can reduce the energy density by increasing the beam diameter, avoid damaging the optical element; by reducing the divergence angle, the collimation of the light beam can be improved, and the effective transmission distance can be prolonged; in addition, it can also match the input requirements of subsequent optical systems, such as focusing lens or telescope.
[0018] It can be understood that the field lens can be dynamically focused, that is, when the polarization system rotates, the laser incidence angle changes constantly, and the ordinary lens will cause the focal point position to deviate (field curvature phenomenon), and the field lens ensures that the light beam is focused on the same plane at different scanning angles through F-Theta correction, and linear scanning is performed; on the other hand, the field lens can also be distorted, that is, when the polarization system scans, the ordinary lens will introduce nonlinear distortion (such as image edge compression) due to the change of incidence angle, and the field lens eliminates such distortion through optical design (such as aspherical lens), and ensures the uniformity of the scanning area; on the other hand, the field lens can also optimize the spot quality, for example, aberration control, that is, to correct spherical aberration, coma and the like, to ensure that the focused spot approaches the diffraction limit (such as TEM00 mode of Gaussian beam), and for example, flattening treatment, that is, certain applications (such as uniform ablation) need to adjust the spot energy distribution from Gaussian type to flat type through field lens design.
[0019] In one embodiment, the sensing device is a CCD camera or a laser sensor, which detects the position of the pole piece and the mark point in real time.
[0020] In one embodiment, the over roller on the walking belt can flatten the pole piece material, and the motion platform driven by the high-precision servo motor or linear motor ensures uniform motion of the pole piece. For example, through PLC or industrial computer, motion control, laser parameters and visual feedback are integrated.
[0021] Please refer to Figure 8 , in a second aspect, the present application provides a cleaning and etching method for laser energy storage directional irradiation of high-speed moving pole piece material, comprising the following steps: Step 1: flatten the pole piece material on the walking belt, and ensure uniform motion of the pole piece through the motion platform driven by the high-precision servo motor or linear motor; Step 2: adjust the optical components of the polarization system to control or adjust the polarization state of the laser, and then adjust the spot position to follow and irradiate the spot; Step 3: detect the position of the pole piece and the mark point in real time through the sensing device; Step 4: laser motion cleaning of the pole piece material; Step 5: after cleaning, the cleaned pole piece material is dusted and wound.
[0022] The laser energy storage directional irradiation cleaning and etching equipment and method for high-speed moving pole piece material of the present application have the following advantages: First, the etching cleaning motion state is improved. The etching cleaning is performed on the high-speed moving material. The etching cleaning can be realized at a speed of 0-200 m / min or even higher. The speed of the moving light spot of the polarization system is greater than the speed of the moving material. The position is controllable. After the etching cleaning area is positioned, the laser positioning point can follow the movement of the material or complete the etching cleaning of the area with a positioning offset of less than ±0.2 mm within 100 ms. It can be understood that the etching cleaning object includes positive and negative material sheets, copper foil, aluminum foil, adhesive paper, aluminum plastic film and other auxiliary materials or sheet materials in the high-speed transmission state. Please refer to Figure 2 When the etching cleaning position of the object is captured, the laser emits strong irradiation, performs laser high-energy flat head (flat top) light source irradiation, realizes non-stagnation cleaning, the material is instantaneously broken and falls off under high-energy irradiation, and the foil is left with a smooth surface or a flat pit.
[0023] Secondly, the laser shape of the etching cleaning is improved. As shown in Figure 5 The existing laser etching cleaning adopts continuous laser to perform line marking or point connection laser etching cleaning. The spot diameter of the laser etching is less than 200 μm. The main laser etching is Gaussian peak laser. The present application is flat head (flat top) laser. The laser is filtered and shaped to filter out the peak and form a spot diameter of more than 1 mm, including 10 mm and even 30 mm or more. The flat head laser (flat top) can be composed of one spot or multiple spots. The spot shape is modulated and the light source is shaped into a special square spot. For example, the etching of the pole ear and the etching cleaning area of the embedded adhesive groove is a 12 mm*20 mm rectangular cleaning area, which can complete the cleaning of the whole surface at one time.
[0024] Thirdly, the position and mark point of the material sheet are detected in real time by a CCD camera or a laser sensor. The polarization system adjusts the spot instruction to follow the spot position and irradiation. The energy reaches a certain degree and completes the etching cleaning at one time. When the beam area needs to be adjusted, multiple lasers are gathered according to the actual needs to adjust the required area or shape, or the light distance is adjusted to realize the adjustment of the beam area. Please refer to Figure 6 The flat head (flat top) square face laser is irradiated to the spot of the material sheet. The spot can be one beam or multiple beams modulated and arranged. When the etching or cleaning depth needs to be adjusted, the peak of the laser can be adjusted to realize the operation. The production efficiency is improved.
[0025] The above merely describes the preferred embodiment of the present application, but the present application is not limited to other forms, any person skilled in the art can use the disclosed technical content to make changes or equivalent embodiments of equivalent changes applied to other fields, but as long as it does not deviate from the technical scheme of the present application, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belongs to the protection scope of the technical scheme of the present application, and in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A cleaning and etching device for laser energy storage directional irradiation of high-speed moving electrode material, characterized in that: The application relates to a laser processing device, which comprises a laser, a beam expander, a polarization system, a field lens and a sensing device, wherein the laser emits a flat head laser source, the beam expander is connected with the laser and the polarization system, the polarization system is used for controlling or adjusting the polarization state of the laser, the field lens is arranged at the bottom of the polarization system, the central axis of the field lens is perpendicular to the surface of a walking belt, the field lens is used for focusing the laser beam reflected by the polarization system on a working plane, correcting the light beam position distortion caused by the swing of the polarization system, and directly affecting the precision, speed and spot quality of laser processing / measuring, and the sensing device is arranged on one side of the field lens, and the light source irradiates the pole piece material on the walking belt through the sensing device.
2. The laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching device according to claim 1, characterized in that: The laser is a pulse fiber laser or an ultraviolet laser.
3. The laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching device according to claim 1, characterized in that: The sensing device is a CCD camera or a laser sensor.
4. The cleaning method of the laser energy storage directional irradiation high-speed moving pole piece material cleaning and etching equipment according to any one of claims 1-3, characterized in that: The application further discloses a laser processing method, which comprises the following steps: Step 1: flattening the pole piece material on the walking belt, and ensuring the uniform motion of the pole piece through a high-precision servo motor or a linear motor driven motion platform; Step 2: adjusting the spot position and irradiation through the optical components of the polarization system for controlling or adjusting the polarization state of the laser; Step 3: detecting the pole piece position and mark points in real time through the sensing device; Step 4: performing laser motion cleaning on the pole piece material; Step 5: performing dust removal on the cleaned pole piece material, and then winding the pole piece material.