A dynamic laser cleaning method

Abstract

The application discloses a kind of dynamic laser cleaning methods, including front laser cleaning system, back laser cleaning system, pole piece belt conveying system and visual photographing system, the pole piece belt conveying system is provided with encoder for calculating pole piece belt walking distance and deviation sensor for sensing pole piece belt deviation position, further comprising pole piece front laser cleaning step and pole piece back laser cleaning step, the dynamic laser cleaning method of the application step is simple, can realize the laser cleaning of front and back of pole piece in the dynamic process of conveying. Dynamic operation mode, not only can greatly reduce processing cycle, but also can improve the efficient operation of production line, improve the cleaning processing efficiency of pole piece.

Description

Technical Field

[0001] This invention relates to the field of electrode processing technology, and in particular to a dynamic laser cleaning method. Background Technology

[0002] In the battery electrode processing flow, traditional static cleaning processes have long faced efficiency challenges. When the electrode is transported to the cleaning station, it must immediately stop moving and remain stationary while the laser completes the surface cleaning process. This stagnant and waiting operation mode not only significantly extends the processing cycle but also becomes a key factor restricting the efficient operation of the production line.

[0003] In view of the above-mentioned technical defects, the present invention provides a dynamic laser cleaning method that can perform laser cleaning operations on electrodes without stopping, thereby reducing waiting time and improving the processing efficiency of electrodes. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a dynamic laser cleaning method.

[0005] The objective of this invention is achieved through the following technical solution: a dynamic laser cleaning method, comprising a front laser cleaning system, a back laser cleaning system, an electrode strip conveying system, and a vision imaging system. The electrode strip conveying system is equipped with an encoder for calculating the electrode strip conveying distance and a correction sensor for sensing the electrode strip offset position. The method further includes the following steps:

[0006] S1) Front cleaning of electrode sheets: The system determines whether the encoder has reached the set moving distance. The front laser cleaning system periodically triggers the cleaning of the front groove according to the set processing interval.

[0007] S2) When the visual imaging system is started and the reverse laser cleaning system is activated, a command to reset the visual imaging system is sent, and the visual imaging system restarts.

[0008] S3) The system determines whether the encoder has reached the set moving distance. If it has reached the set value, it triggers the vision imaging IO signal and caches a ready-to-emit-light flag and the current encoder position and adds them to the queue.

[0009] S4) Wait for a preset encoder movement distance, and then jump to step S3) to start the next cycle;

[0010] S5) After receiving the trigger IO signal, the visual imaging system starts scanning the front slot of the electrode. The scanning length is set according to the interval of the front slot. After the scanning is completed, the current slot information is analyzed.

[0011] S6) The reverse laser cleaning system selects whether to process the reverse slots or not based on the position information of the front slots fed back by the vision imaging system.

[0012] As an improvement to the dynamic laser cleaning method of the present invention, two sets of correction sensors are provided. The Y position of the front cleaning tank in S1) is determined by algorithm conversion based on the two sets of correction sensors.

[0013] As an improvement to the dynamic laser cleaning method of the present invention, in step S4), after waiting for a preset encoder to move a distance, the visual feedback data is classified into the following processing situations.

[0014] Case 1: If the number of visual data outputs and the number of ready-to-emerge-light indicators in the cache are inconsistent, it is determined that the visual imaging system is processing an error and the process needs to be stopped.

[0015] Case 2: The feedback visual data is X-coordinate data and Y-coordinate data, and the reverse laser cleaning system uses this coordinate data to process the back groove.

[0016] Case 3: If the feedback visual data is zero, it is determined that the visual imaging system did not capture the data of the front slot, and the back laser cleaning system cancels the light output this time.

[0017] As an improvement to the dynamic laser cleaning method of the present invention, in processing case 2, after processing with this coordinate data, the vision imaging system determines whether the coordinate data has deviated from the center position. It is necessary to control the interval of triggering the imaging IO to ensure that the front slot interval captured next time is in the preset center position.

[0018] As an improvement to the dynamic laser cleaning method of the present invention, in step S5), after scanning is completed, the analysis of the current front slot information has the following two processing options;

[0019] Case 1: The visual imaging system captures the information of the front slot: the return command sends the X and Y coordinate data of the front slot back to the reverse laser cleaning system;

[0020] Case 2: The visual imaging system failed to capture slot information: a command was returned indicating that no slot information was captured.

[0021] As an improvement to the dynamic laser cleaning method of the present invention, in step S1), after the encoder reaches the set moving distance, it is determined whether there is a device ready IO. When there is no device ready IO, the system continues to determine whether the encoder has reached the set moving distance.

[0022] When there is a device ready I / O, the values ​​of the front and rear sets of correction sensors are obtained and the light position is calculated by the algorithm. The front laser cleaning system periodically triggers the cleaning of the front slot according to the set processing interval.

[0023] As an improvement to the dynamic laser cleaning method of the present invention, the equipment ready IO is the equipment electrical system ready signal IO. When the equipment electrical system ready signal IO is high, the front laser cleaning system starts the cleaning process; when the equipment electrical system ready signal IO is low, the front laser cleaning system stops the cleaning process.

[0024] As an improvement to the dynamic laser cleaning method of the present invention, an alarm signal IO is also provided to the equipment electrical system: when the front laser cleaning system or the back laser system is abnormal, an alarm signal is given to notify the equipment to stop; the correction sensor values ​​cached in the equipment electrical system are read in real time through a custom TCP protocol or the correction sensor data cached in the equipment electrical system is read in real time using the ADS protocol.

[0025] The beneficial effects of this invention are as follows: the dynamic laser cleaning method of this invention has simple steps and can realize laser cleaning of both the front and back sides of the electrode during the dynamic process of conveying. The dynamic processing mode can not only significantly reduce the processing cycle, but also provide efficient operation of the production line and improve the cleaning efficiency of the electrode. Attached Figure Description

[0026] Figure 1 This is a flowchart of the front laser cleaning process of the present invention;

[0027] Figure 2 This is a flowchart of the reverse laser cleaning process of the present invention; Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0031] like Figures 1-2 As shown, a dynamic laser cleaning method includes a front laser cleaning system, a back laser cleaning system, an electrode strip conveying system, and a vision imaging system. The electrode strip conveying system is equipped with an encoder for calculating the distance the electrode strip carries and a correction sensor for sensing the offset position of the electrode strip. The method also includes the following steps:

[0032] S1) Front cleaning of electrode sheets: The system determines whether the encoder has reached the set moving distance. The front laser cleaning system periodically triggers the cleaning of the front groove according to the set processing interval.

[0033] S2) When the visual imaging system is started and the reverse laser cleaning system is activated, a command to reset the visual imaging system is sent, and the visual imaging system restarts.

[0034] S3) The system determines whether the encoder has reached the set moving distance. If it has reached the set value, it triggers the vision imaging IO signal and caches a ready-to-emit-light flag and the current encoder position and adds them to the queue.

[0035] S4) Wait for a preset encoder movement distance, and then jump to step S3) to start the next cycle;

[0036] S5) After receiving the trigger IO signal, the visual imaging system starts scanning the front slot of the electrode. The scanning length is set according to the interval of the front slot. After the scanning is completed, the current slot information is analyzed.

[0037] S6) The reverse laser cleaning system selects whether to process the reverse slots or not based on the position information of the front slots fed back by the vision imaging system.

[0038] Preferably, two sets of correction sensors are provided, and the Y position of the front cleaning tank in S1) is determined by algorithm conversion based on the two sets of correction sensors.

[0039] Preferably, in step S4), after waiting for a preset encoder movement distance to complete, the visual feedback data is classified into the following processing scenarios;

[0040] Case 1: If the number of visual data outputs and the number of ready-to-emerge-light indicators in the cache are inconsistent, it is determined that the visual imaging system is processing an error and the process needs to be stopped.

[0041] Case 2: The feedback visual data is X-coordinate data and Y-coordinate data, and the reverse laser cleaning system uses this coordinate data to process the back groove.

[0042] Case 3: If the feedback visual data is zero, it is determined that the visual imaging system did not capture the data of the front slot, and the back laser cleaning system cancels the light output this time.

[0043] Preferably, in processing scenario 2, after processing with this coordinate data, the visual imaging system determines whether the coordinate data has deviated from the center position. It is necessary to control the interval of triggering the imaging IO to ensure that the front slot interval captured next time is in the preset center position.

[0044] Preferably, in step S5), the analysis of the current front slot information after scanning has the following two processing options;

[0045] Case 1: The visual imaging system captures the information of the front slot: the return command sends the X and Y coordinate data of the front slot back to the reverse laser cleaning system;

[0046] Case 2: The visual imaging system failed to capture slot information: a command was returned indicating that no slot information was captured.

[0047] Preferably, in step S1), after the encoder reaches the set moving distance, it is determined whether there is a ready IO device. When there is no ready IO device, the system continues to determine whether the encoder has reached the set moving distance.

[0048] When there is a device ready I / O, the values ​​of the front and rear sets of correction sensors are obtained and the light position is calculated by the algorithm. The front laser cleaning system periodically triggers the cleaning of the front slot according to the set processing interval.

[0049] Preferably, the device ready IO is the device electrical system ready signal IO. When the device electrical system ready signal IO is high, the front laser cleaning system starts the cleaning process; when the device electrical system ready signal IO is low, the front laser cleaning system stops the cleaning process.

[0050] The electrical system of the equipment uses Beckhoff logic controllers, and the communication uses the ADS protocol. After the equipment is ready, it sends a ready IO signal to the laser system. The laser system uses this signal to determine whether it can start the process.

[0051] The equipment's electrical system receives alarm I / O signals from the laser system (providing an alarm signal to stop the equipment when the laser system malfunctions); the electrical system interfaces with the correction sensor and stores the sensor's values ​​in a data area. Data forwarding is then performed, and the laser system ultimately reads the data via the ADS protocol.

[0052] Preferably, it also includes an alarm signal IO for the equipment's electrical system: when the front laser cleaning system or the back laser system malfunctions, an alarm signal is given to notify the equipment to stop; the correction sensor values ​​cached in the equipment's electrical system are read in real time via a custom TCP protocol or the correction sensor data cached in the equipment's electrical system is read in real time using the ADS protocol.

[0053] The visual imaging system operates as follows: It employs a line-scan camera and is only used during reverse laser cleaning; it is not involved in front-side laser cleaning. The visual imaging system interacts with the reverse laser cleaning system using a custom TCP communication protocol. Triggered by the reverse laser cleaning system, it captures images of the front-side slots according to a pre-set scan length. After image capture, it analyzes the coordinates of the captured slots within the image and actively returns this coordinate information to the reverse laser cleaning system via the custom TCP protocol.

[0054] The principle of front-side cleaning of the battery electrodes: Periodic cleaning is achieved by calculating the interval of the battery electrode conveyor belt using an encoder. Real-time values ​​collected by two sets of correction sensors are used to calculate the current Y-axis offset position of the battery electrodes using a specific algorithm, thereby controlling the Y-position of the cleaning tank.

[0055] The principle of reverse side cleaning of electrode sheets: Cleaning the reverse side of the electrode sheets requires identifying the already processed areas on the front side. Based on visual recognition of the front side slots, the cleaning location on the reverse side is determined. The encoder calculates the interval of the battery electrode conveyor belt, periodically triggering the vision system to photograph the already cleaned front side electrode cleaning slots. Simultaneously, a cleaning preparation marker and the current encoder position are cached. When the encoder reaches a set distance, it checks for visual feedback positioning information. When visual feedback is received, the laser system processes the electrode according to this positioning data.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dynamic laser cleaning method, comprising a front laser cleaning system, a back laser cleaning system, an electrode strip conveying system, and a vision imaging system, wherein the electrode strip conveying system is equipped with an encoder for calculating the electrode strip conveying distance and a correction sensor for sensing the electrode strip offset position, characterized in that, It also includes the following steps; S1) Front cleaning of electrode: The system determines whether the encoder has reached the set moving distance. The front laser cleaning system periodically triggers the cleaning of the front slot according to the set processing interval. The Y position of the front slot is determined by algorithm conversion based on two sets of front and rear correction sensors. Two sets of correction sensors are set. S2) When the visual imaging system is activated and the reverse laser cleaning system is enabled, a command to reset the visual imaging system is sent, and the visual imaging system restarts. S3) The system determines whether the encoder has reached the set moving distance. If it has reached the set value, it triggers the vision imaging IO signal and caches a ready-to-emit-light flag and the current encoder position and adds them to the queue. S4) Wait for a preset encoder movement distance and then jump to step S3) to start the next cycle; after the preset encoder movement distance is completed, the visual feedback data is judged and divided into the following processing situations; Case 1: If the number of visual data outputs and the number of ready-to-emerge-light indicators in the cache are inconsistent, it is determined that the visual imaging system is processing an error and the process needs to be stopped. Case 2: The feedback visual data is X-coordinate data and Y-coordinate data, and the reverse laser cleaning system uses this coordinate data to process the back groove. Case 3: If the visual data feedback is zero, it is determined that the visual imaging system did not capture the data of the front slot, and the back laser cleaning system cancels the light output this time. In the second processing scenario, after processing with this coordinate data, the visual imaging system determines whether the coordinate data has deviated from the center position. It is necessary to control the interval of triggering the imaging IO to ensure that the front slot interval captured next time is in the preset center position. S5) After receiving the trigger IO signal, the visual imaging system starts scanning the front slot of the electrode. The scanning length is set according to the interval of the front slot. After the scanning is completed, the current slot information is analyzed. After scanning is complete, the current front slot information is analyzed, and the following two processing options are available; Case 1: The visual imaging system captures the information of the front slot: the return command sends the X and Y coordinate data of the front slot back to the reverse laser cleaning system; Case 2: The visual imaging system failed to capture slot information: A command indicating that no slot information was captured was returned; S6) The reverse laser cleaning system selects whether to process the reverse slots or not based on the position information of the front slots fed back by the vision imaging system.

2. The dynamic laser cleaning method according to claim 1, characterized in that, In step S1), after the encoder reaches the set moving distance, it is determined whether there is a ready IO device. When there is no ready IO device, the system continues to determine whether the encoder has reached the set moving distance. When there is a device ready I / O, the values ​​of the front and rear sets of correction sensors are obtained and the light position is calculated by the algorithm. The front laser cleaning system periodically triggers the cleaning of the front slot according to the set processing interval.

3. The dynamic laser cleaning method according to claim 2, characterized in that, The device ready IO is the device electrical system ready signal IO. When the device electrical system ready signal IO is high, the front laser cleaning system starts the cleaning process. When the device electrical system ready signal IO is low, the front laser cleaning system stops the cleaning process.

4. The dynamic laser cleaning method according to claim 3, characterized in that, It also includes alarm signal IO for the equipment's electrical system: when the front laser cleaning system or the back laser system malfunctions, an alarm signal is given to notify the equipment to stop; the system can read the correction sensor values ​​cached in the equipment's electrical system in real time via a custom TCP protocol or use the ADS protocol to read the correction sensor data cached in the equipment's electrical system in real time.

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