CN109358064B - Full-function detection method, equipment, medium and system for pole piece production and winding defects - Google Patents
Full-function detection method, equipment, medium and system for pole piece production and winding defects Download PDFInfo
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Abstract
The invention provides a pole piece sheet-making winding defect full-function detection method, which comprises the following steps: detecting the position of a pole piece, measuring the size, detecting the rubberizing defect, detecting blue glue, searching parameter coordinates, calculating the coordinate distance, rectifying the deviation of the pole piece, receiving an in-place signal, collecting an image of a naked electric core, and detecting the appearance size of the naked electric core. The invention relates to electronic equipment and a readable storage medium, which are used for executing a pole piece production and winding defect full-function detection method. The invention also relates to a pole piece sheet-making winding defect full-function detection system. The invention realizes the automatic detection of the position of the pole piece, the gummed paper on the pole piece, the gummed outcrop, the gummed metal leakage and the blue glue, detects the distance between the anode and the cathode and the distance between the anode and the diaphragm of the pole piece by analyzing the detected image, automatically detects the appearance size of the naked electric core, and can meet the huge demand and high-quality demand of consumers on the lithium battery.
Description
Technical Field
The invention relates to the technical field of pole piece production and winding defect detection, in particular to a pole piece production and winding defect full-function detection method, equipment, medium and system.
Background
Currently, lithium batteries are widely used in various industries, such as mobile phones, tablet computers, notebooks, desktop computers, electric cars, electric buses, and the like. The demand of consumers for lithium batteries is very large, and the quality requirement of lithium batteries is higher and higher. In the existing pole piece processing process, the positions of pole pieces, gummed paper on the pole pieces, gummed outcrop, gummed metal leakage and blue gum are generally finished at one time by the accuracy of processing equipment, and because the requirements on safety and quality consistency are continuously improved, the production of poor products is inevitable, in the prior art, the processed semi-finished products are manually detected, the efficiency is low, the error is large, and the huge requirements and high-quality requirements of consumers on lithium batteries cannot be met. Secondly, pole piece alignment is an important index of measuring the quality of the battery cell, if the pole piece alignment does not meet the requirement, the service life and the safety performance of the battery cell can be greatly influenced, and even the naked battery cell can be directly scrapped. In the prior art, the starting end of the pole piece is easy to bend, shift and the like, so that the actual position of the starting end of the pole piece is staggered with the target position on the winding needle, the existing inserting piece deviation rectifying mode can only rectify the deviation of the pole piece inserted into the winding needle, the deviation rectifying accuracy is low, and the winding quality of a battery cell cannot be guaranteed. Thirdly, the naked electric core detection method of current usually is manual measurement, compresses tightly naked electric core through the staff, then blocks naked electric core with slide caliper and measures, and current measurement method results in the measurement accuracy of naked electric core lower, can't satisfy the electric core design high accuracy requirement that promotes day by day. Therefore, a full-function detection method and system for pole piece sheet-making and winding defects are needed to solve the above problems.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a full-function detection method for the pole piece production and winding defects, and solve the problems that in the prior art, the manual detection is carried out on the processed pole piece, the efficiency is low, the error is large, the huge requirements and high-quality requirements of consumers on lithium batteries cannot be met, the existing insertion sheet deviation correction mode can only correct the deviation of the pole piece inserted into a winding needle, the deviation correction accuracy is low, the quality of winding of a battery cell cannot be guaranteed, the measurement accuracy of a bare battery cell is low due to the existing measurement method, and the increasingly improved high-precision requirements of battery cell design cannot be met.
The invention provides a pole piece production winding defect full-function detection method, which comprises the following steps:
detecting the position of a pole piece, processing an acquired first pole piece image, searching the position of the pole piece in the first pole piece image and gummed paper on the pole piece, and judging whether the pole piece has a defect;
measuring the size, searching the coordinate of the gummed paper, generating a processing area through the coordinate of the gummed paper, searching the gummed paper outcrop coordinate and the pole piece coordinate according to the processing area, calculating the distance of the gummed paper exposed out of the pole piece through the gummed paper outcrop coordinate and the pole piece coordinate, and judging whether the gummed outcrop has defects or not;
detecting a rubberizing defect, performing threshold segmentation on the gummed paper according to the coordinate of the gummed paper to obtain a region to be processed, calculating a gummed paper threshold and a threshold parameter in the region to be processed, performing metal leakage detection on the gummed paper in the region to be processed through the threshold parameter, and judging whether rubberizing leaks metal or not;
detecting blue gel, extracting the blue gel from the first pole piece image according to preset parameters, and judging whether the blue gel exists;
searching parameter coordinates, acquiring an acquired second pole piece image, and searching a diaphragm coordinate, an anode coordinate and a cathode coordinate in the second pole piece image through a measurement algorithm;
calculating a coordinate distance, combining the diaphragm coordinate with the anode coordinate, calculating a distance between the diaphragm coordinate and the anode coordinate, combining the diaphragm coordinate with the cathode coordinate, and calculating a distance between the diaphragm coordinate and the cathode coordinate;
rectifying the deviation of the pole piece, namely respectively judging whether the distance between the diaphragm coordinate and the anode coordinate, the distance between the diaphragm coordinate and the cathode coordinate and the deviation rectifying system data have deviation, if so, calculating the deviation distance and sending the deviation distance to a controller of an automatic winding machine to control a deviation rectifying mechanism to perform winding deviation rectification;
receiving an in-place signal, receiving a first naked electric core in-place signal, and controlling a naked electric core shifting device to move a naked electric core to a detection position according to the first naked electric core in-place signal;
acquiring a naked electric core image, receiving a second naked electric core in-place signal, and sending an acquisition signal to an image acquisition device for image acquisition according to the second naked electric core in-place signal to obtain a naked electric core image;
detect naked electric core apparent dimension, be in through positioning parameter look for naked electric core position on the naked electric core image naked electric core position department measures naked electric core utmost point ear interval, naked electric core width, judges whether naked electric core utmost point ear interval, naked electric core width are in the threshold value, then naked electric core apparent dimension is normal, otherwise naked electric core apparent dimension is unusual.
Further, in the position of the detected pole piece, if the gummed paper on the pole piece is not found, the pole piece is judged to be defective, positioning failure is prompted, and a control signal is sent to a sheet making machine for shutdown, single-roll or marking treatment; if the gummed paper on the pole piece is found, jumping to the step to measure the size;
in the parameter searching coordinates, the anode coordinates comprise a first anode coordinate and a second anode coordinate, the diaphragm coordinates comprise a first diaphragm coordinate and a second diaphragm coordinate, the cathode coordinates comprise a first cathode coordinate and a second cathode coordinate, and the first diaphragm coordinate, the second diaphragm coordinate, the first anode coordinate, the second anode coordinate, the first cathode coordinate and the second cathode coordinate in the second pole piece image are searched through a measuring algorithm;
the method comprises the following steps of detecting a bare cell, and if the bare cell is normal in appearance size, controlling the bare cell shifting device to transfer the bare cell to the next station of a winding machine, and skipping to the step of receiving in-place signals; if the appearance size of the naked electric core is abnormal, the naked electric core shifting device is controlled to transfer the naked electric core to the next station of the winding machine, and meanwhile, an unqualified signal is sent to the winding machine to reject the naked electric core and skip to the step to receive the in-place signal.
Further, in the measurement, according to the processing area, searching a left outcrop coordinate of the adhesive tape, a right outcrop coordinate of the adhesive tape, a left coordinate of the pole piece and a right coordinate of the pole piece, and calculating the distance of the adhesive tape from the pole piece according to the left outcrop coordinate of the adhesive tape, the right outcrop coordinate of the adhesive tape, the left coordinate of the pole piece and the right coordinate of the pole piece;
in the calculating of the coordinate distance, combining the first diaphragm coordinate with the first anode coordinate, calculating a distance between the first diaphragm coordinate and the first anode coordinate to obtain a first distance, combining the second diaphragm coordinate with the second anode coordinate, calculating a distance between the second diaphragm coordinate and the second anode coordinate to obtain a second distance, combining the first anode coordinate with the first cathode coordinate, calculating a distance between the first anode coordinate and the first cathode coordinate to obtain a third distance, combining the second anode coordinate with the second cathode coordinate, calculating a distance between the second anode coordinate and the second cathode coordinate to obtain a fourth distance;
the first naked electric core signal that targets in place does the naked electric core is located the signal of winder detection area, the naked electric core signal that targets in place of second does the naked electric core is located the signal of detection position.
Further, in the detection of the blue gel, if a blue gel area is found, opening and closing operations and filtering interference impurities are carried out on the blue gel area to obtain a real blue gel area; if the blue gel area is not found, the detection is quitted;
in the pole piece deviation correction, the deviation correction system data comprises a first reference distance, a second reference distance, a third reference distance and a fourth reference distance, whether the first distance and the first reference distance, the second distance and the second reference distance, the third distance and the third reference distance and the fourth reference distance are deviated or not is judged respectively, if yes, the deviation distance is calculated and sent to a controller of an automatic winding machine to control a deviation correction mechanism to perform winding deviation correction, and if not, the step is skipped to search parameter coordinates;
in the naked electric core apparent dimension of detection, be in through positioning parameter the naked electric core image is gone up and is generated first location frame and second location frame, seeks naked electric core position according to first location frame and second location frame.
Further, the method comprises the steps of integrating a detection result, integrating a pole piece detection result, a rubberizing outcrop detection result, a metal leakage detection result and a blue glue detection result, judging whether the pole piece is a qualified product, if so, waiting for processing of a next sampling image, and otherwise, sending an unqualified signal to trigger a pelleter to process an unqualified product according to a preset mode;
in the pole piece deviation correction, the deviation correction system data further comprises a first threshold range, a second threshold range, a third threshold range and a fourth threshold range, whether the first distance is in the first threshold range, whether the second distance is in the second threshold range, whether the third distance is in the third threshold range and whether the fourth distance is in the fourth threshold range are judged, and if any one of the first distance, the second distance, the third distance and the fourth distance is not in the corresponding threshold range, a control signal is sent to an automatic winding machine to carry out single winding;
during the naked electric core external dimension of detection naked electric core position department generates first utmost point ear locating frame, second utmost point ear locating frame, first naked electric core border locating frame, the naked electric core border locating frame of second, and is right naked electric core utmost point ear interval in first utmost point ear locating frame, the second utmost point ear locating frame is measured, and is right naked electric core width in first naked electric core border locating frame, the naked electric core border locating frame of second is measured.
An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing the above pole piece production winding defect full function detection method.
A computer-readable storage medium having stored thereon a computer program for executing the above-described pole piece sheet-making winding defect full-function detection method by a processor.
The pole piece production and winding defect full-function detection system comprises a pole piece production machine, a winding machine, a first sensor, a second sensor, a third sensor, an image acquisition device, an IO board card, an industrial personal computer, a rubberizing detection module, a pole piece deviation correction module, a naked cell appearance size detection module and a naked cell shifting device; the winding machine comprises a winding machine body, a controller and a deviation rectifying mechanism, the controller is connected with the winding machine body and the deviation rectifying mechanism, the winding machine body is connected with the deviation rectifying mechanism, the first sensor and the second sensor are connected with the image acquisition device, the third sensor, the image acquisition device and the bare cell shifting device are connected with the industrial personal computer, the industrial personal computer is connected with the sheet making machine and the winding machine through the IO board card, and the rubberizing detection module, the pole piece deviation rectifying module and the bare cell appearance size detection module are installed in the industrial personal computer; the pole piece is arranged in the pelleter on the winder body, the first sensor detects the pole piece and sends a trigger signal to the image acquisition device, the second sensor detects the rotary needle position of the winder body and sends an acquisition signal to the image acquisition device, the image acquisition device acquires a first pole piece image according to the trigger signal, the image acquisition device acquires a second pole piece image according to the acquisition signal and sends the first pole piece image and the second pole piece image to the industrial personal computer, the rubberizing detection module processes the first pole piece image, detects the pole piece position in the first pole piece image, gummed paper, rubberizing outcrop, rubberizing leakage metal and blue gum on the pole piece, the pole piece deviation correction module processes the second pole piece image and detects the distance between a diaphragm and an anode in the second pole piece image, Whether the distance between the anode and the cathode deviates from the data of the deviation rectifying system or not is judged, the pole piece deviation rectifying module sends the deviation data to the controller, and the controller controls the deviation rectifying mechanism to perform winding deviation rectification on the winding machine body; the third sensor detects naked electric core of detection area on the winder to with first naked electric core signal transmission that targets in place to naked electric core apparent dimension detection module, naked electric core apparent dimension detection module basis first naked electric core signal control that targets in place naked electric core shifter transfers naked electric core extremely image acquisition device's detection position, the third sensor detects the naked electric core of detection position to with the naked electric core signal transmission that targets in place of second to naked electric core apparent dimension detection module, naked electric core apparent dimension detection module basis the naked electric core of second targets in place signal control naked electric core image acquisition device gathers naked electric core image, naked electric core apparent dimension detection module detects naked electric core utmost point ear interval, naked electric core width in the naked electric core image generate the testing result.
Further, the pole piece deviation rectifying module detects whether the distance between the diaphragm and the anode and the distance between the anode and the cathode in the second pole piece image are within a threshold range, and sends a control signal to the controller, and the controller controls the deviation rectifying mechanism to perform single winding on the winding machine body;
the detection result comprises that the naked electric core appearance size is normal and the naked electric core appearance size is abnormal, when the naked electric core appearance size is normal, the naked electric core appearance size detection module controls the naked electric core shifting device to transfer the naked electric core to the next station of the winding machine, when the naked electric core appearance size is abnormal, the naked electric core appearance size detection module controls the naked electric core shifting device to transfer the naked electric core to the next station of the winding machine, and meanwhile, an unqualified signal is sent to the winding machine to reject the naked electric core.
Further, the first sensor is a fiber correlation sensor; the image acquisition device comprises an industrial camera, a lens and a light source, wherein the lens is installed on the industrial camera, the light source is used for illuminating the position to be detected of the pole piece and the position to be detected of the naked electric core, and the industrial camera acquires the first pole piece image, the second pole piece image and the naked electric core image through the lens.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a pole piece sheet-making winding defect full-function detection method, which comprises the following steps: detecting the position of a pole piece, measuring the size, detecting the rubberizing defect, detecting blue glue, searching parameter coordinates, calculating the coordinate distance, rectifying the deviation of the pole piece, receiving an in-place signal, collecting an image of a naked electric core, and detecting the appearance size of the naked electric core. The invention relates to electronic equipment and a readable storage medium, which are used for executing a pole piece production and winding defect full-function detection method. The invention also relates to a pole piece sheet-making winding defect full-function detection system. The invention realizes the automatic detection of the position of the pole piece, the gummed paper on the pole piece, the gummed outcrop, the gummed metal leakage and the blue glue, solves the problem of the gummed defect of the pole piece, has high efficiency and small error, and can meet the huge requirement and high-quality requirement of consumers on the lithium battery; the distance between the anode and the cathode of the pole piece and the distance between the anode and the diaphragm are detected by analyzing the detected image, the pole piece with the defect is subjected to single winding, and the pole piece without the defect but with the deviation of the distance is wound and corrected, so that the problems of detecting and correcting the distance between the anode and the cathode of the pole piece and the distance between the anode and the diaphragm in the winding process are solved, and the winding quality of the battery cell is ensured; realize the naked electric core external dimension of automated inspection, reject the naked electric core that detects the defect, naked electric core external dimension's measurement accuracy is high, can satisfy the electric core design high accuracy requirement that promotes day by day.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a full-function detection system for pole piece sheet-making winding defects according to the present invention;
FIG. 2 is a flow chart of the full-function detection method for winding defects of a pole piece in the invention;
FIG. 3 is a schematic diagram of a pole piece detection interface of the rubberizing detection module according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a pole piece detection interface of the pole piece deviation rectifying module according to the embodiment of the present invention;
fig. 5 is a schematic diagram of a bare cell appearance size detection interface of the bare cell appearance size detection module according to the embodiment of the present invention.
In the figure: 1. pole pieces; 2. a tab; 3. a pole piece positioning frame; 4. a gummed paper positioning frame; 5. a processing area; 6. the precise positioning frame for the gummed paper; 7. a region to be processed; 8. a blue glue area; 11. a first positioning frame; 12. a second positioning frame; 13. a first tab positioning frame; 14. a second tab positioning frame; 15. the first naked electric core edge positioning frame; 16. naked electric core border locating frame of second.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
A pole piece production and winding defect full-function detection system is shown in figure 1 and comprises a pole piece production machine, a winding machine, a first sensor, a second sensor, a third sensor, an image acquisition device, an IO board card, an industrial personal computer, an adhesive tape detection module, a pole piece deviation correction module, a naked cell appearance size detection module and a naked cell displacement device; the first sensor is connected with an image acquisition device, the image acquisition device is connected with an industrial personal computer, the industrial personal computer is connected with a pelleter through an IO board card, and the rubberizing detection module is installed in the industrial personal computer; the pole piece is arranged on the sheet making machine, the pole piece flows on the sheet making machine in a paper tape mode, the pole piece is welded with a pole lug at a certain specific position, the pole lug extends out of the pole piece by about 10mm (specific data are different according to different production processes and the lengths of the pole pieces extending out), the first sensor detects the pole piece and sends a trigger signal to the image acquisition device, and in the embodiment, the sensor is preferably an optical fiber correlation sensor. The sensor is installed on the pelleter, after the pole piece passes through the sensor, signal transmission is for the pelleter, the pelleter calculates the distance between the position that the pole piece is detected to this moment and the image acquisition device position of shooing, when the position that the pole piece is detected to be located the camera position of shooing, the pelleter transmits the signal to the image acquisition device, the image acquisition device receives the signal, the image acquisition device gathers the pole piece image according to trigger signal, and send first pole piece image to the industrial computer, rubberizing detection module handles first pole piece image, detect pole piece position in the first pole piece image, the adhesive tape on the pole piece, rubberizing outcrop, rubberizing leaks metal, blue glue.
The winding machine comprises a winding machine body, a controller and a deviation correcting mechanism, wherein the controller is connected with the winding machine body and the deviation correcting mechanism, the winding machine body is connected with the deviation correcting mechanism, the second sensor is connected with the image acquisition device, the image acquisition device is connected with the industrial personal computer, the industrial personal computer is connected with the winding machine, and the pole piece deviation correcting module is installed in the industrial personal computer; the pole piece is arranged on the winder body, the second sensor detects the rotating needle position of the winder body, when the second sensor detects the rotating needle position of the winder body, an acquisition signal is sent to the image acquisition device, the image acquisition device acquires a pole piece image according to the acquisition signal and sends the second pole piece image to the industrial personal computer, the pole piece deviation correction module processes the second pole piece image, whether the data of the distance between a diaphragm and an anode and the distance between the anode and a cathode in the second pole piece image and the deviation correction system are deviated or not is detected, if the data are not deviated, the next pole piece image is waited to be processed, if the data are deviated, the deviation correction module sends the deviation data to the controller, and the controller controls the deviation correction mechanism to perform winding deviation correction on the winder body. Preferably, the pole piece deviation rectifying module detects whether any one of the distance between the diaphragm and the anode and the distance between the anode and the cathode in the second pole piece image is not within the threshold range, if so, a control signal is sent to the controller, and the controller controls the deviation rectifying mechanism to perform single winding on the winding machine body.
The third sensor, the image acquisition device and the bare cell shifting device are connected with an industrial personal computer, the industrial personal computer is connected with a winding machine through an IO board card, and the bare cell appearance size detection module is installed in the industrial personal computer; a third sensor for detecting a naked electric core of a detection area on a winding machine, when the naked electric core is detected, generating a first naked electric core in-place signal, and transmitting the first naked electric core in-place signal to a naked electric core appearance size detection module, the naked electric core appearance size detection module controls a naked electric core shifting device to transfer the naked electric core to a detection position of an image acquisition device according to the first naked electric core in-place signal, the third sensor detects the naked electric core of the detection position, when the naked electric core is detected, generating a second naked electric core in-place signal, and transmitting the second naked electric core in-place signal to the naked electric core appearance size detection module, the naked electric core appearance size detection module controls the image acquisition device to acquire a naked electric core image according to the second naked electric core in-place signal, the image acquisition device transmits the acquired naked electric core image to the naked electric core appearance size detection module through a network card, the naked electric core appearance size detection module detects the naked electric core ear-ear distance in the naked electric core image, And (4) whether the width of the naked electric core is within a threshold value or not, and generating a detection result.
In an embodiment, preferably, the image collecting device includes an industrial camera, a lens and a light source, the lens is installed on the industrial camera, in this embodiment, the industrial camera is a gigabit network industrial camera, the light source is used for illuminating the position to be detected by the pole piece and the position to be detected by the bare cell so as to shorten the exposure time of the camera, and the gigabit industrial camera collects the first pole piece image, the second pole piece image and the bare cell image through the lens. After the gigabit network industrial camera collects the picture, the picture internal storage information is transmitted to a rubberizing detection module in an industrial personal computer through a network, the rubberizing detection module acquires the picture information transmitted by the gigabit network industrial camera to generate a first pole piece picture, and the rubberizing detection module processes the first pole piece picture to detect the position of a pole piece in the first pole piece picture, gummed paper on the pole piece, rubberizing outcrop, rubberizing metal leakage and blue glue.
In an embodiment, preferably, the pole piece deviation rectifying module detects whether any one of the distance between the diaphragm and the anode and the distance between the anode and the cathode in the second pole piece image is not within the threshold range, if yes, the pole piece deviation rectifying module sends a control signal to the controller, and the controller controls the deviation rectifying mechanism to perform single winding on the winding machine body. Preferably, the testing result includes that naked electric core apparent dimension is normal and naked electric core apparent dimension is unusual, and when naked electric core apparent dimension is normal, naked electric core apparent dimension detection module control naked electric core shift unit transfers naked electric core to the next station of winder, and when naked electric core apparent dimension is unusual, naked electric core apparent dimension detection module control naked electric core shift unit transfers naked electric core to the next station of winder, sends simultaneously unqualified signal to winder and rejects the processing to naked electric core.
The pole piece manufacturing and winding defect full-function detection method, as shown in fig. 2-3, comprises the following steps:
detecting the position of a pole piece, processing an acquired first pole piece image, searching the position of the pole piece in the first pole piece image and gummed paper on the pole piece by taking the whole first pole piece image as a reference, and judging whether the pole piece has a defect or not to obtain a pole piece detection result; in fig. 3, the lower part of the reference interface is the whole first pole piece image, and according to the parameter configuration of searching edge Y, brightness of 35, brightness change of dark to bright, angle of down to up, and channel of green, the pole piece 1 provided with the tab 2 is positioned by the pole piece positioning frame 3, and then the adhesive tape on the pole piece 1 is positioned by the adhesive tape positioning frame 4. Preferably, in the position of the pole piece, if the gummed paper on the pole piece is not found, the pole piece is judged to be defective, positioning failure is prompted, and the IO board card is driven to send a control signal to the pelleter to carry out shutdown, single-roll or marking treatment; and if the gummed paper on the pole piece is found, skipping to the step to measure the size.
Measuring the size, searching for the coordinate of the gummed paper, generating a processing area through the coordinate of the gummed paper, searching for the gummed paper outcrop coordinate and the pole piece coordinate according to the processing area, calculating the distance of the gummed paper exposed out of the pole piece through the gummed paper outcrop coordinate and the pole piece coordinate, judging whether the gummed outcrop is defective or not, and obtaining a gummed outcrop detection result; preferably, in the measurement, the left outcrop coordinate of the gummed paper, the right outcrop coordinate of the gummed paper, the left coordinate of the pole piece and the right coordinate of the pole piece are searched according to the processing area, and the distance of the gummed paper from the pole piece is calculated through the left outcrop coordinate of the gummed paper, the right outcrop coordinate of the gummed paper, the left coordinate of the pole piece and the right coordinate of the pole piece. In fig. 3, the coordinates of the gummed paper are accurately searched again through the gummed paper accurate positioning frame 6, then the processing area 5 is generated, the coordinate of the gummed paper right outcrop and the coordinate of the pole piece right are calculated through the three processing areas 5 on the right side in fig. 3, and the coordinate of the gummed paper left outcrop and the coordinate of the pole piece left are calculated through the two processing areas 5 on the left side in fig. 3.
Detecting a rubberizing defect, in fig. 3, performing threshold segmentation on the gummed paper according to coordinates of the gummed paper to obtain a region to be processed 7, calculating a gummed paper threshold in the region to be processed 7 to adapt to color change of the gummed paper, generating a threshold parameter, performing metal leakage detection on the gummed paper in the region to be processed 7 through the threshold parameter, judging whether the rubberizing leaks metal, and obtaining a metal leakage detection result.
And detecting blue gel, extracting the blue gel from the first pole piece image according to preset parameters, and judging whether the blue gel exists or not to obtain a blue gel detection result. It should be understood that the blue glue refers to a kind of adhesive paper for splicing tapes, different customers have different adhesive paper colors, and the method in this embodiment is compatible with detection of glue with multiple colors, and is not limited to blue glue. Preferably, in the blue gel, in fig. 3, blue gel extraction is performed on the first pole piece image according to preset parameters of which the minimum brightness is 130, the maximum brightness is 255 and the channel is B-G, and if the blue gel region 8 is found, opening and closing operations and interference impurities are filtered on the blue gel region 8 to obtain a real blue gel region; and if the blue gel area is not found, the detection is quitted.
In an embodiment, preferably, the method further includes integrating the detection result, integrating the pole piece detection result, the rubberized outcrop detection result, the metal leakage detection result and the blue glue detection result, judging whether the pole piece is a qualified product, if so, waiting for processing of a next sampling image, and otherwise, sending an unqualified signal to trigger a sheet making machine to process an unqualified product according to a preset mode.
Searching parameter coordinates, acquiring a collected second pole piece image, reading preset parameters such as Sigma, a threshold value, brightness change and the like, and searching diaphragm coordinates, anode coordinates and cathode coordinates in the second pole piece image through a measurement algorithm; preferably, in the parameter coordinates, the anode coordinates include a first anode coordinate and a second anode coordinate, the diaphragm coordinates include a first diaphragm coordinate and a second diaphragm coordinate, the cathode coordinates include a first cathode coordinate and a second cathode coordinate, and the first diaphragm coordinate, the second diaphragm coordinate, the first anode coordinate, the second anode coordinate, the first cathode coordinate and the second cathode coordinate in the second pole image are searched through a measurement algorithm. As shown in fig. 4, the top of fig. 4 is the captured image, the bottom is the structure diagram of the diaphragm, the anode and the cathode, in fig. 4, the first anode coordinate is the left anode coordinate, the second anode coordinate is the right anode coordinate, the first diaphragm coordinate is the left diaphragm coordinate, the second diaphragm coordinate is the right diaphragm coordinate, the first cathode coordinate is the left cathode coordinate, and the second cathode coordinate is the right cathode coordinate.
Calculating the coordinate distance, combining the diaphragm coordinate with the anode coordinate, calculating the distance between the diaphragm coordinate and the anode coordinate, combining the diaphragm coordinate with the cathode coordinate, and calculating the distance between the diaphragm coordinate and the cathode coordinate; preferably, in the calculating of the coordinate distance, the first diaphragm coordinate and the first anode coordinate are combined, and the distance between the first diaphragm coordinate and the first anode coordinate is calculated to obtain a first distance, the second diaphragm coordinate and the second anode coordinate are combined, and the distance between the second diaphragm coordinate and the second anode coordinate is calculated to obtain a second distance, the first anode coordinate and the first cathode coordinate are combined, and the distance between the first anode coordinate and the first cathode coordinate is calculated to obtain a third distance, the second anode coordinate and the second cathode coordinate are combined, and the distance between the second anode coordinate and the second cathode coordinate is calculated to obtain a fourth distance. In fig. 4, the first distance is denoted by L1, the second distance is denoted by L2, the third distance is denoted by L3, and the fourth distance is denoted by L4, and the calculation results of the first distance, the second distance, the third distance, and the fourth distance are shown at the top of fig. 4 in the form of "anode-separator-L11.17", "anode-separator-L20.97", "anode-cathode-L30.55", and "anode-cathode-L40.84".
And (3) rectifying the deviation of the pole piece, namely respectively judging whether the distance between the diaphragm coordinate and the anode coordinate, the distance between the diaphragm coordinate and the cathode coordinate and the data of a deviation rectifying system have deviation, if not, processing the next image, and if so, calculating the deviation distance and sending the deviation distance to a controller (PLC) of an automatic winding machine through a UDP network protocol to control a deviation rectifying mechanism to perform winding deviation rectification. Preferably, in the pole piece deviation correction, the deviation correction system data comprises a first reference distance, a second reference distance, a third reference distance and a fourth reference distance, whether the first distance and the first reference distance, the second distance and the second reference distance, the third distance and the third reference distance and the fourth reference distance are deviated or not is judged respectively, if yes, the deviation distance is calculated and sent to a controller of an automatic winding machine to control a deviation correction mechanism to wind and correct the deviation, and if not, the step is skipped to, the parameter coordinate is searched, and then a next image is processed.
In an embodiment, preferably, in the pole piece deviation correction, the deviation correction system data further includes a first threshold range, a second threshold range, a third threshold range, and a fourth threshold range, in this embodiment, the first threshold range, the second threshold range, the third threshold range, and the fourth threshold range are normal production process specification data, and whether the first distance is in the first threshold range, whether the second distance is in the second threshold range, whether the third distance is in the third threshold range, and whether the fourth distance is in the fourth threshold range is determined, if any one of the first distance, the second distance, the third distance, and the fourth distance is not in the corresponding threshold range, a control signal (NG flag bit) is sent to the automatic winding machine through a UDP network protocol to perform single winding, that is, the unqualified pole piece is separately wound and discarded, and the step is skipped to search for the parameter coordinate. In fig. 4, the first threshold range is 0.20-2.00, the second threshold range is 0.20-2.00, the third threshold range is 0.20-1.50, and the fourth threshold range is 0.20-1.50, and since the first distance is 1.17, the second distance is 0.97, the third distance is 0.55, and the fourth distance is 0.84, all of them are within the corresponding threshold ranges, the single-roll operation is not performed.
Receiving an in-place signal, receiving a first naked electric core in-place signal, and controlling the naked electric core shifting device to move the naked electric core to a detection position according to the first naked electric core in-place signal; the first naked electric core signal that targets in place is the signal that naked electric core was located the winder detection area.
Acquiring a naked cell image, receiving a second naked cell in-place signal, and sending an acquisition signal to an image acquisition device for image acquisition according to the second naked cell in-place signal to obtain a naked cell image; the naked electric core of second signal that targets in place is the signal that naked electric core was located the detection position.
Detect naked electric core apparent dimension, look for naked electric core position on naked electric core image through positioning parameter, locate to naked electric core utmost point ear interval, naked electric core width at naked electric core position and measure, judge naked electric core utmost point ear interval, whether naked electric core width is in the threshold value, then naked electric core apparent dimension is normal, otherwise naked electric core apparent dimension is unusual.
In an embodiment, preferably, the method further includes the step of processing the detection result, if the appearance size of the bare cell is normal, the bare cell shifting device is controlled to transfer the bare cell to the next station of the winding machine, and the step of receiving the in-place signal is skipped to; if naked electric core apparent dimension is unusual, then control naked electric core shifter and transfer naked electric core to the next station of winder, send unqualified signal to the winder simultaneously and reject the processing to naked electric core to jump to the step and receive the signal that targets in place.
As shown in fig. 5, preferably, during the detection of the external dimension of the bare cell, a first positioning frame 11 and a second positioning frame 12 are generated on the image of the bare cell through positioning parameters, the first positioning frame 11 is used for calibrating the top end of the bare cell, the second positioning frame 12 is used for calibrating the side edge of the bare cell, and the position of the bare cell is searched according to the first positioning frame 11 and the second positioning frame 12. Preferably, in the detection of the external dimension of a bare cell, a first tab positioning frame 13, a second tab positioning frame 14, a first bare cell edge positioning frame 15, a second bare cell edge positioning frame 16 are generated at the position of the bare cell, the first tab positioning frame 13 is used for calibrating a first tab of the bare cell, the second tab positioning frame 14 is used for calibrating a second tab of the bare cell, the first bare cell edge positioning frame 15 is used for calibrating a first side edge of the bare cell, the second bare cell edge positioning frame 16 is used for calibrating a second side edge of the bare cell, the bare cell tab spacing in the first tab positioning frame 13 and the second tab positioning frame 14 is measured, the bare cell width in the first bare cell edge positioning frame 15 and the second bare cell edge positioning frame 16 is measured, in fig. 5, the measurement result of the bare cell spacing, the measurement result of the bare cell width is displayed, the measurement result of the bare cell tab spacing is 7.27, naked electric core width measurement result is 36.91, the threshold value of naked electric core utmost point ear interval is 6.00-7.00, the threshold value of naked electric core width is 35.00-36.00, here the threshold value is the specification range, it is not in the threshold value of naked electric core utmost point ear interval to judge naked electric core utmost point ear interval measurement result, naked electric core width measurement result is not in the threshold value of naked electric core width, naked electric core apparent dimension is unusual, control naked electric core shift unit transfers current naked electric core to the next station of winder, send unqualified signal to the winder simultaneously and reject the processing to current naked electric core, and jump to the step and receive the signal that targets in place.
An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing the above-described pole piece sheet making winding defect full function detection method.
A computer readable storage medium is stored with a computer program, and the computer program is executed by a processor to execute the pole piece sheet-making winding defect full-function detection method.
The invention provides a pole piece sheet-making winding defect full-function detection method, which comprises the following steps: detecting the position of a pole piece, measuring the size, detecting the rubberizing defect, detecting blue glue, searching parameter coordinates, calculating the coordinate distance, rectifying the deviation of the pole piece, receiving an in-place signal, collecting an image of a naked electric core, and detecting the appearance size of the naked electric core. The invention relates to electronic equipment and a readable storage medium, which are used for executing a pole piece production and winding defect full-function detection method. The invention also relates to a pole piece sheet-making winding defect full-function detection system. The invention realizes the automatic detection of the position of the pole piece, the gummed paper on the pole piece, the gummed outcrop, the gummed metal leakage and the blue glue, solves the problem of the gummed defect of the pole piece, has high efficiency and small error, and can meet the huge requirement and high-quality requirement of consumers on the lithium battery; the distance between the anode and the cathode of the pole piece and the distance between the anode and the diaphragm are detected by analyzing the detected image, the pole piece with the defect is subjected to single winding, and the pole piece without the defect but with the deviation of the distance is wound and corrected, so that the problems of detecting and correcting the distance between the anode and the cathode of the pole piece and the distance between the anode and the diaphragm in the winding process are solved, and the winding quality of the battery cell is ensured; realize the naked electric core external dimension of automated inspection, reject the naked electric core that detects the defect, naked electric core external dimension's measurement accuracy is high, can satisfy the electric core design high accuracy requirement that promotes day by day.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. The pole piece sheet-making winding defect full-function detection method is characterized by comprising the following steps of:
detecting the position of a pole piece, processing an acquired first pole piece image, searching the position of the pole piece in the first pole piece image and gummed paper on the pole piece, and judging whether the pole piece has a defect;
measuring the size, searching the coordinate of the gummed paper, generating a processing area according to the coordinate of the gummed paper, searching the gummed paper outcrop coordinate and the pole piece coordinate according to the processing area, calculating the distance of the gummed paper exposed out of the pole piece according to the gummed paper outcrop coordinate and the pole piece coordinate, and judging whether the gummed outcrop has defects or not;
detecting a rubberizing defect, performing threshold segmentation on the gummed paper according to the coordinate of the gummed paper to obtain a region to be processed, calculating a gummed paper threshold and a threshold parameter in the region to be processed, performing metal leakage detection on the gummed paper in the region to be processed through the threshold parameter, and judging whether rubberizing leaks metal or not;
detecting blue gel, extracting the blue gel from the first pole piece image according to preset parameters, and judging whether the blue gel exists;
searching parameter coordinates, acquiring an acquired second pole piece image, and searching a diaphragm coordinate, an anode coordinate and a cathode coordinate in the second pole piece image through a measurement algorithm; the anode coordinates comprise a first anode coordinate and a second anode coordinate, the diaphragm coordinates comprise a first diaphragm coordinate and a second diaphragm coordinate, and the cathode coordinates comprise a first cathode coordinate and a second cathode coordinate;
calculating a coordinate distance, combining the first diaphragm coordinate with the first anode coordinate, calculating a distance between the first diaphragm coordinate and the first anode coordinate to obtain a first distance, combining the second diaphragm coordinate with the second anode coordinate, calculating a distance between the second diaphragm coordinate and the second anode coordinate to obtain a second distance, combining the first anode coordinate with the first cathode coordinate, calculating a distance between the first anode coordinate and the first cathode coordinate to obtain a third distance, combining the second anode coordinate with the second cathode coordinate, calculating a distance between the second anode coordinate and the second cathode coordinate to obtain a fourth distance;
pole piece correction, namely respectively judging whether the first distance and a first reference distance, the second distance and a second reference distance, the third distance and a third reference distance, and the fourth distance and a fourth reference distance have deviation, if so, calculating the deviation distance, and sending the deviation distance to a controller of an automatic winding machine to control a deviation correcting mechanism to perform winding deviation correction, otherwise, skipping to the step of searching for parameter coordinates; in the pole piece deviation correction, the deviation correction system data further comprises a first threshold range, a second threshold range, a third threshold range and a fourth threshold range, whether the first distance is in the first threshold range, whether the second distance is in the second threshold range, whether the third distance is in the third threshold range and whether the fourth distance is in the fourth threshold range are judged, and if any one of the first distance, the second distance, the third distance and the fourth distance is not in the corresponding threshold range, a control signal is sent to an automatic winding machine to carry out single winding; receiving an in-place signal, receiving a first naked electric core in-place signal, and controlling a naked electric core shifting device to move a naked electric core to a detection position according to the first naked electric core in-place signal;
acquiring a naked cell image, receiving a second naked cell in-place signal, and sending an acquisition signal to an image acquisition device for image acquisition according to the second naked cell in-place signal to obtain a naked cell image;
detecting the appearance size of a naked electric core, searching the position of the naked electric core on the image of the naked electric core through positioning parameters, measuring the lug distance and the width of the naked electric core at the position of the naked electric core, judging whether the lug distance and the width of the naked electric core are in a threshold value, if so, the appearance size of the naked electric core is normal, otherwise, the appearance size of the naked electric core is abnormal;
the method also comprises the step of integrating the detection result, namely integrating the pole piece detection result, the adhesive tape exposure detection result, the metal leakage detection result and the blue glue detection result, judging whether the pole piece is a qualified product or not, waiting for processing the next sampling image if the pole piece is the qualified product, and otherwise sending an unqualified signal to trigger a sheet making machine to process the unqualified product according to a preset mode.
2. The pole piece sheet-making winding defect full-function detection method according to claim 1, characterized in that: in the position of the detected pole piece, if the gummed paper on the pole piece is not found, the pole piece is judged to be defective, positioning failure is prompted, and a control signal is sent to a sheet making machine for shutdown, single-roll or marking treatment; if the gummed paper on the pole piece is found, jumping to the step to measure the size;
the method comprises the following steps of detecting a bare cell, and if the bare cell is normal in appearance size, controlling the bare cell shifting device to transfer the bare cell to the next station of a winding machine, and skipping to the step of receiving in-place signals; if the appearance size of the naked electric core is abnormal, the naked electric core shifting device is controlled to transfer the naked electric core to the next station of the winding machine, and meanwhile, an unqualified signal is sent to the winding machine to reject the naked electric core and skip to the step to receive the in-place signal.
3. The pole piece sheet-making winding defect full-function detection method according to claim 2, characterized in that: in the measurement, searching a left outcrop coordinate of the gummed paper, a right outcrop coordinate of the gummed paper, a left coordinate of the pole piece and a right coordinate of the pole piece according to the processing area, and calculating the distance of the gummed paper from the pole piece according to the left outcrop coordinate of the gummed paper, the right outcrop coordinate of the gummed paper, the left coordinate of the pole piece and the right coordinate of the pole piece;
the first naked electric core signal that targets in place does the naked electric core is located the signal of winder detection area, the naked electric core signal that targets in place of second does the naked electric core is located the signal of detection position.
4. The pole piece sheet-making winding defect full-function detection method according to claim 3, characterized in that: in the detection of the blue gel, if a blue gel area is found, opening and closing operations and filtering interference impurities are carried out on the blue gel area to obtain a real blue gel area; if the blue gel area is not found, the detection is quitted;
in the naked electric core apparent dimension of detection, be in through positioning parameter the naked electric core image is gone up and is generated first location frame and second location frame, seeks naked electric core position according to first location frame and second location frame.
5. The pole piece sheet-making winding defect full-function detection method according to claim 4, characterized in that:
during the naked electric core external dimension of detection naked electric core position department generates first utmost point ear locating frame, second utmost point ear locating frame, first naked electric core border locating frame, the naked electric core border locating frame of second, and is right naked electric core utmost point ear interval in first utmost point ear locating frame, the second utmost point ear locating frame is measured, and is right naked electric core width in first naked electric core border locating frame, the naked electric core border locating frame of second is measured.
6. An electronic device, characterized by comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for carrying out the method of any one of claims 1-5.
7. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program is executed by a processor for performing the method according to any of claims 1-5.
8. Pole piece film-making coiling defect full function detecting system, its characterized in that: the device comprises a pelleter, a winding machine, a first sensor, a second sensor, a third sensor, an image acquisition device, an IO board card, an industrial personal computer, a rubberizing detection module, a pole piece deviation correction module, a naked cell appearance size detection module and a naked cell shifting device; the winding machine comprises a winding machine body, a controller and a deviation rectifying mechanism, the controller is connected with the winding machine body and the deviation rectifying mechanism, the winding machine body is connected with the deviation rectifying mechanism, the first sensor and the second sensor are connected with the image acquisition device, the third sensor, the image acquisition device and the bare cell shifting device are connected with the industrial personal computer, the industrial personal computer is connected with the sheet making machine and the winding machine through the IO board card, and the rubberizing detection module, the pole piece deviation rectifying module and the bare cell appearance size detection module are installed in the industrial personal computer; the pole piece is arranged on the pelleter and the winder body, the first sensor detects the pole piece and sends a trigger signal to the image acquisition device, the second sensor detects the rotating needle position of the winder body and sends an acquisition signal to the image acquisition device, the image acquisition device acquires a first pole piece image according to the trigger signal, the image acquisition device acquires a second pole piece image according to the acquisition signal and sends the first pole piece image and the second pole piece image to the industrial personal computer, the rubberizing detection module processes the first pole piece image, detects the position of the pole piece in the first pole piece image, gummed paper, rubberizing outcrop, rubberizing leakage metal and blue gum on the pole piece, the pole piece rectification module processes the second pole piece image and finds the diaphragm coordinate in the second pole piece image, The anode coordinates comprise a first anode coordinate and a second anode coordinate, the diaphragm coordinates comprise a first diaphragm coordinate and a second diaphragm coordinate, and the cathode coordinates comprise a first cathode coordinate and a second cathode coordinate; combining the first diaphragm coordinate with the first anode coordinate, calculating a distance between the first diaphragm coordinate and the first anode coordinate to obtain a first distance, combining the second diaphragm coordinate with the second anode coordinate, calculating a distance between the second diaphragm coordinate and the second anode coordinate to obtain a second distance, combining the first anode coordinate with the first cathode coordinate, calculating a distance between the first anode coordinate and the first cathode coordinate to obtain a third distance, combining the second anode coordinate with the second cathode coordinate, calculating a distance between the second anode coordinate and the second cathode coordinate to obtain a fourth distance; whether the first distance and the first reference distance, the second distance and the second reference distance, the third distance and the third reference distance, and the fourth distance and the fourth reference distance have deviation or not is respectively judged, the pole piece deviation rectifying module sends deviation data to the controller, and the controller controls the deviation rectifying mechanism to perform winding deviation rectifying on the winding machine body; in the pole piece deviation rectifying module, the deviation rectifying system data further comprises a first threshold range, a second threshold range, a third threshold range and a fourth threshold range, whether the first distance is in the first threshold range, whether the second distance is in the second threshold range, whether the third distance is in the third threshold range and whether the fourth distance is in the fourth threshold range are judged, and if any one of the first distance, the second distance, the third distance and the fourth distance is not in the corresponding threshold range, a control signal is sent to an automatic winding machine to carry out single winding; the third sensor detects a naked electric core of a detection area on the winding machine, and sends a first naked electric core in-place signal to the naked electric core appearance size detection module, the naked electric core appearance size detection module controls the naked electric core shifting device to transfer the naked electric core to the detection position of the image acquisition device according to the first naked electric core in-place signal, the third sensor detects the naked electric core of the detection position and sends a second naked electric core in-place signal to the naked electric core appearance size detection module, the naked electric core appearance size detection module controls the image acquisition device to acquire a naked electric core image according to the second naked electric core in-place signal, and the naked electric core appearance size detection module detects the naked electric core tab spacing and the naked electric core width in the naked electric core image to generate a detection result; the system also comprises an integration detection result module which integrates the pole piece detection result, the adhesive tape head-sticking detection result, the metal leakage detection result and the blue glue detection result, judges whether the pole piece is a qualified product or not, waits for processing the next sampling image if the pole piece is the qualified product, and otherwise sends an unqualified signal to trigger the sheet making machine to process the unqualified product according to a preset mode.
9. The pole piece sheet-making winding defect full-function detection system of claim 8, characterized in that:
the detection result comprises that the naked electric core appearance size is normal and the naked electric core appearance size is abnormal, when the naked electric core appearance size is normal, the naked electric core appearance size detection module controls the naked electric core shifting device to transfer the naked electric core to the next station of the winding machine, when the naked electric core appearance size is abnormal, the naked electric core appearance size detection module controls the naked electric core shifting device to transfer the naked electric core to the next station of the winding machine, and meanwhile, an unqualified signal is sent to the winding machine to reject the naked electric core.
10. The pole piece sheet-making winding defect full-function detection system of claim 8, characterized in that: the first sensor is an optical fiber correlation sensor; the image acquisition device comprises an industrial camera, a lens and a light source, wherein the lens is installed on the industrial camera, the light source is used for illuminating the position to be detected of the pole piece and the position to be detected of the naked electric core, and the industrial camera acquires the first pole piece image, the second pole piece image and the naked electric core image through the lens.
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| CN204315681U (en) * | 2014-12-26 | 2015-05-06 | 东莞市博拓自动化设备有限公司 | Cell winding device |
| CN207007128U (en) * | 2017-07-10 | 2018-02-13 | 东莞新易科电子有限公司 | Battery core size automatic checkout equipment |
| CN207488384U (en) * | 2017-11-15 | 2018-06-12 | 无锡先导智能装备股份有限公司 | A kind of lug detection device and winding apparatus |
| CN107830804B (en) * | 2017-12-13 | 2020-06-12 | 惠州金源精密自动化设备有限公司 | Battery cell overall dimension detection system and battery cell OCV test equipment thereof |
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| CN103236559A (en) * | 2013-05-16 | 2013-08-07 | 东莞市雅康精密机械有限公司 | Plate producing and winding control system |
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