CN116634129A - Lithium battery coating size CCD camera system calibration device and method - Google Patents
Lithium battery coating size CCD camera system calibration device and method Download PDFInfo
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- CN116634129A CN116634129A CN202310479610.3A CN202310479610A CN116634129A CN 116634129 A CN116634129 A CN 116634129A CN 202310479610 A CN202310479610 A CN 202310479610A CN 116634129 A CN116634129 A CN 116634129A
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000000576 coating method Methods 0.000 title claims abstract description 48
- 239000011248 coating agent Substances 0.000 title claims abstract description 44
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000007639 printing Methods 0.000 claims description 29
- 239000011888 foil Substances 0.000 claims description 28
- 230000008569 process Effects 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002950 deficient Effects 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a device and a method for calibrating a CCD camera system of a coating size of a lithium battery, which relate to the technical field of lithium battery production and are used for calibrating deviation between the measured coating size and the actual size of a CCD camera. The main body of the invention is a film baseplate, and the measuring error is obtained by comparing the error between the measured value output by the size CCD camera system and the standard value by placing the film baseplate at the measuring position of the CCD camera, and the size CCD camera system is compensated to achieve the aim of calibration. The device and the method improve the first inspection method of the CCD camera system with the coating size in the coating process of the existing lithium battery production line, calibrate the CCD camera system with the size in the stop state of the coating machine by using the calibration film, improve the measurement precision and the measurement speed, ensure the accuracy of the feedback data of the CCD camera system with the size in normal coating, and simultaneously avoid the rejection of defective products generated in measurement.
Description
Technical Field
The invention relates to the technical field of lithium battery production, in particular to a device and a method for calibrating a CCD camera system with a lithium battery coating size.
Background
The calibration method used on the production line at present mainly comprises the following steps: after the coating equipment starts to stably run, measuring the size data such as the width of a coating area, the width of a blank area and the like by using a film ruler, an auxiliary light source and a magnifying glass to measure the coating width of a pole piece to be close to but not close to a current collector, and comparing the measured value of a size CCD camera system and performing compensation calibration.
The rough measurement method of the film ruler in the coating process is characterized in that the film ruler cannot be clung to a current collector of the coating during manual measurement; the measured object is not static, and the sizes at different moments have certain fluctuation; the measurement space is limited; the production personnel experience is insufficient, and the like, so that larger system errors can be generated. The use of such dimensional data to calibrate a dimensional CCD camera system undoubtedly affects the accuracy of the calibration and affects the current collector coating dimensional data fed back by the dimensional CCD camera system during subsequent normal production, thereby affecting the quality of the produced pole pieces.
Therefore, in order to improve the quality of the pole piece produced in the coating process, the device and the method for calibrating the CCD camera system of the coating size, which are accurate in measurement and convenient to operate, are provided, and the device and the method are used for solving the problem in the production process of the battery cell.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a device and a method for calibrating a CCD camera system with a lithium battery coating size.
The invention provides a calibrating device for a lithium battery coating size CCD camera system, which comprises a size CCD camera system, a foil, and a film base plate, wherein the film base plate is positioned above the foil, the size CCD camera system is positioned above the film base plate, a film printing area, a film non-printing area and a calibration line are arranged on the film base plate, and the calibration line is used for calibrating the positions of the foil and the film base plate.
Preferably, the size CCD camera system comprises a CCD camera and a CCD system light source, wherein the CCD camera is positioned on the left side of the film base plate, and the CCD system light source is positioned on the rear side of the film base plate.
Preferably, the thickness of the film bottom plate is 0.1mm, and the film with standard coating width is printed.
Preferably, the thickness of the film bottom plate is not more than 0.1mm, so as to ensure that the dimension measured by the CCD camera system does not generate systematic errors due to the relative distance with the CCD camera system.
Preferably, the number of the calibration lines is two, the two calibration lines are respectively positioned at two sides of one side, far away from the foil, of the film base plate, the two calibration lines are parallel to the left side and the right side of the film base plate and are perpendicular to the upper side and the lower side of the film base plate, so that the line width of the calibration lines is not more than 0.1mm when the film base plate is used, and the relative positions of the foil and the film base plate can be controlled through the calibration lines, so that the calibration lines are prevented from being caused; too wide affects the relative position of the foil to the invention.
Preferably, the number of the film printing areas and the film non-printing areas is multiple, and the film printing areas and the film non-printing areas are sequentially arranged on the film base plate at intervals.
Preferably, the film bottom plate is a standard rectangle, and all sides of the film bottom plate are mutually perpendicular.
Preferably, the length of the film bottom plate is greater than 200mm so as to ensure that the CCD camera system can normally finish edge grabbing, and the width of the film bottom plate is greater than the width of the foil so as to ensure that the film bottom plate can be stably placed on the foil to ensure that the calibration line can be normally used.
Preferably, the film bottom plate is colorless and transparent, so that the accuracy of the checking result is ensured.
A lithium battery coating size CCD camera system calibration method comprises the following steps:
s1, under the stop state of a coating machine, opening a size CCD camera system, namely starting a CCD camera and a CCD system light source, so that the size CCD camera system operates normally;
s2, placing the film bottom plate on a foil of a detection point of a CCD camera system of a matched production line size;
s3, adjusting the position of the film bottom plate to enable the calibration lines on the two sides of the film bottom plate to coincide with the edges of the foil;
s4, grabbing and feeding back measurement size data of the machine by a size CCD camera system;
s5, comparing whether the difference value between the process target size and the machine measurement size data is larger than a control line required by the process parameters, and if not, ending the calibration;
s6, if the compensation value is larger than the target size, setting the compensation value of the size CCD camera system as the process target size, and reducing the machine-measured size;
and S7, repeating the steps S2-S5 to verify the modified compensation value until the difference value between the process target size and the machine measurement size data is within a control line required by the process parameters.
Preferably, the gray level of the film printing area is within the identification range of the CCD camera system, for example, the gray level is between 64 and 80 when the positive pole piece is calibrated, so that the CCD camera system can be used for normally grabbing and collecting information.
Preferably, the width of the film printing area is consistent with the process target value of the width of the coating area of the produced pole piece, and the width tolerance is smaller than 5um, so as to ensure the effectiveness of the calibration of the invention.
Preferably, the width of the film non-printing area is consistent with the technological target value of the width of the blank area of the produced pole piece, and the width tolerance is smaller than 5um, so as to ensure the effectiveness of the calibration of the invention.
1. According to the calibrating device and method for the CCD camera system of the lithium battery coating size, which are provided by the invention, the calibrating device and method are simple and convenient to use, low in personnel capability requirement and easy to train personnel, and can be used only by aligning the left and right calibrating lines with the edges of the foil, and the film ruler, the auxiliary light source and the magnifying glass instrument are not required to be used for measuring the coating width of the pole piece.
2. According to the calibration device and the calibration method for the CCD camera system with the lithium battery coating size, the time consumption in the calibration process is short, and the data collection can be completed only by correctly placing the film bottom plate in the grabbing range of the CCD camera system.
3. According to the device and the method for calibrating the CCD camera system of the lithium battery coating size, provided by the invention, the calibration result is fast, and the difference value between the feedback value and the set value of the CCD camera system is the deviation value.
4. According to the calibration device and the calibration method for the lithium battery coating size CCD camera system, which are provided by the invention, the calibration result is accurate, and the original method has larger errors due to limited measurement conditions, so that the errors caused by the measurement conditions are solved.
5. According to the calibration device and method for the lithium battery coating size CCD camera system, which are provided by the invention, the scrapping of products generated in the measurement process by using the original method is avoided, and the scrapping of products due to the size caused by inaccurate calibration of the original method is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic representation of the use of the device of the present invention.
FIG. 2 is a schematic view of a film base plate of the present invention
Fig. 3 is a flow chart of the use of the method of the present invention.
In the figure, 1, foil; 2. a film base plate; 3. a CCD camera; 4. a CCD system light source; 5. a film printing area; 6. a film non-printing area; 7. a calibration line; 8. a size CCD camera system.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The calibrating device for the lithium battery coating size CCD camera system comprises a size CCD camera 3 system and a foil 1, and further comprises a film base plate 2, wherein the film base plate 2 is positioned above the foil 1, the size CCD camera 3 system is positioned above the film base plate 2, a film printing area 5, a film non-printing area 6 and a calibration line 7 are arranged on the film base plate 2, and the calibration line 7 is used for calibrating the positions of the foil 1 and the film base plate 2.
Further, the size CCD camera 3 system comprises a CCD camera 3 and a CCD system light source 4, wherein the CCD camera 3 is positioned on the left side of the film base plate 2, and the CCD system light source 4 is positioned on the rear side of the film base plate 2.
Specifically, the thickness of the film base plate 2 is 0.1mm, and a film with standard coating width is printed;
the thickness of the film bottom plate 2 is not more than 0.1mm, so that the dimension measured by the CCD camera 3 system can not generate a system error due to the relative distance with the CCD camera;
the film bottom plate 2 is standard rectangle, each side should mutually perpendicular, and the length of film bottom plate 2 is greater than 200mm to guarantee that CCD camera 3 system can normally accomplish the edge of grabbing, the width of film bottom plate 2 is greater than the width of foil 1, so as to guarantee that can steadily place on foil 1 and make calibration line 7 normally use, film bottom plate 2 is colorless transparent, in order to guarantee the accuracy of check result.
Further, the number of the calibration lines 7 is two, and the two calibration lines 7 are respectively located at two sides of one side, far away from the foil material 1, of the film base plate 2, are parallel to the left side and the right side of the film base plate 2 and are perpendicular to the upper side and the lower side of the film base plate 2, so that the relative position of the foil material 1 and the film base plate can be controlled through the calibration lines 7 in use.
Specifically, the line width of the calibration line 7 is not more than 0.1mm, so that the calibration line 7 is avoided; too wide affects the relative position of the foil 1 to the invention.
Further, the number of the film printing areas 5 and the film non-printing areas 6 is multiple, and the film printing areas 5 and the film non-printing areas 6 are sequentially arranged on the film base plate 2 at intervals.
As shown in fig. 1-3, a method for calibrating a lithium battery coating size CCD camera 3 system comprises the following steps:
s1, under the stop state of a coating machine, opening a system of the size CCD camera 3, namely starting the CCD camera 3 and a CCD system light source 4, so that the system of the size CCD camera 3 operates normally;
s2, placing the film base plate 2 on the foil 1 matched with a detection point of a CCD camera 3 system of the production line size;
s3, adjusting the position of the film base plate 2 to enable the calibration lines 7 on the two sides of the film base plate 2 to coincide with the edges of the foil 1;
s4, the dimension CCD camera 3 system captures and feeds back dimension measurement data of the machine;
s5, comparing whether the difference value between the process target size and the machine measurement size data is larger than a control line required by the process parameters, and if not, ending the calibration;
s6, if the compensation value is larger than the target size, setting the compensation value of the size CCD camera 3 system as the process target size, and reducing the machine size;
and S7, repeating the steps S2-S5 to verify the modified compensation value until the difference value between the process target size and the machine measurement size data is within a control line required by the process parameters.
Further, the gray level of the film printing area 5 is within the identification range of the CCD camera 3 system, for example, the gray level is between 64 and 80 when the positive pole piece is calibrated, so that the invention can be used for normally capturing and collecting information by the CCD camera 3 system.
Further, the width of the film printing area 5 is consistent with the process target value of the width of the produced pole piece coating area, and the width tolerance is smaller than 5um, so that the calibration effectiveness of the invention is ensured.
Further, the width of the film non-printing area 6 is consistent with the technological target value of the produced pole piece blank area width, and the width tolerance is smaller than 5um, so as to ensure the effectiveness of the calibration of the invention.
The provided lithium battery coating size CCD camera 3 system calibration device and method are simple and convenient to use, low in personnel capability requirement and easy to train, can be used by only aligning the left and right calibration lines 7 with the edges of the foil 1, and does not need to use film ruler, auxiliary light source and magnifying glass instrument to measure the coating width of the pole piece.
The calibration process is short in time consumption, and data collection can be completed only by correctly placing the film baseplate 2 in the grabbing range of the CCD camera 3 system.
The calibration result is fast, and the difference value between the feedback value of the CCD camera 3 system and the set value is the deviation value.
The calibration result is accurate, and the original method has larger error due to limited measurement conditions, so that the error caused by the measurement conditions is solved.
The product scrapping generated in the measuring process by using the original method is avoided, and the product scrapping caused by inaccurate calibration of the original method due to size reasons is reduced.
The invention is used for calibrating the deviation between the coating size measured by the CCD camera 3 and the actual size in the coating process of lithium battery production.
The embodiment is in the working process:
the size CCD camera 3 system is used for capturing the size information (namely the process target size) of the invention, the size data actually fed back by the size CCD camera 3 system and the process target size are compared, the difference value of the size data and the process target size is the measurement error caused by the size CCD camera 3 system, and if the measurement error is larger than a control line required by the process parameters, the measurement error caused by the size CCD camera 3 system is counteracted by setting the difference value as a compensation value of the size CCD camera 3 system.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a lithium cell coating size CCD camera system calibrating device, includes size CCD camera (3) system and foil (1), its characterized in that still includes film bottom plate (2), be equipped with film printing district (5), film non-printing district (6) and calibration line (7) on film bottom plate (2), calibration line (7) are used for calibrating the position of foil (1) and film bottom plate (2).
2. The lithium battery coated size CCD camera system calibration device of claim 1, wherein the size CCD camera (3) system comprises a CCD camera (3) and a CCD system light source (4).
3. The lithium battery coating size CCD camera system calibration device according to claim 1, characterized in that the thickness of the film base plate (2) is not more than 0.1mm.
4. The calibration device for the lithium battery coating size CCD camera system according to claim 1, wherein the number of the calibration lines (7) is two, and the two calibration lines (7) are respectively positioned at two sides of one side of the film base plate (2) away from the foil (1).
5. The lithium battery coated size CCD camera system calibration device according to claim 1 or 4, characterized in that the line width of the calibration line (7) is not more than 0.1mm.
6. The calibration device for the lithium battery coating size CCD camera system according to claim 1, wherein the number of the film printing areas (5) and the number of the film non-printing areas (6) are multiple, and the film printing areas (5) and the film non-printing areas (6) are sequentially arranged on the film base plate (2) at intervals.
7. The method for calibrating the CCD camera system with the coating size of the lithium battery is characterized by comprising the following steps of:
s1, under the stop state of a coating machine, opening a system of a size CCD camera (3), namely opening the CCD camera (3) and a CCD system light source (4), so that the system of the size CCD camera (3) operates normally;
s2, placing the film base plate (2) on a foil (1) of a detection point of a CCD camera (3) system of a matched production line size;
s3, adjusting the position of the film base plate (2) to enable the calibration lines (7) on two sides of the film base plate (2) to coincide with the edges of the foil (1);
s4, the dimension CCD camera (3) system captures and feeds back dimension data of the machine;
s5, comparing whether the difference value between the process target size and the machine measurement size data is larger than a control line required by the process parameters, and if not, ending the calibration;
s6, if the compensation value is larger than the target size, setting the compensation value of the size CCD camera (3) system as the process target size, and reducing the machine size;
and S7, repeating the steps S2-S5 to verify the modified compensation value until the difference value between the process target size and the machine measurement size data is within a control line required by the process parameters.
8. The method for calibrating a CCD camera system of a coating size of a lithium battery according to claim 7, wherein the gray scale of the film printing area (5) on the film base plate (2) is within the recognition range of the CCD camera (3) system.
9. The method for calibrating a lithium battery coating size CCD camera system according to claim 7, wherein the width of a film printing area (5) on the film base plate (2) is consistent with a process target value of the width of a produced pole piece coating area, and the width tolerance is smaller than 5um.
10. The method for calibrating a lithium battery coating size CCD camera system according to claim 7, wherein the width of a film non-printing area (6) on the film base plate (2) is consistent with a process target value of the width of a produced pole piece blank area, and the width tolerance is less than 5um.
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| CN202310479610.3A CN116634129A (en) | 2023-04-28 | 2023-04-28 | Lithium battery coating size CCD camera system calibration device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118347413A (en) * | 2024-03-14 | 2024-07-16 | 江苏梅曼新能源科技有限公司 | Winding type coating detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118347413A (en) * | 2024-03-14 | 2024-07-16 | 江苏梅曼新能源科技有限公司 | Winding type coating detection system |
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