CN116885047A - Battery piece screen printing alignment method and system - Google Patents

Battery piece screen printing alignment method and system Download PDF

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Publication number
CN116885047A
CN116885047A CN202311149483.7A CN202311149483A CN116885047A CN 116885047 A CN116885047 A CN 116885047A CN 202311149483 A CN202311149483 A CN 202311149483A CN 116885047 A CN116885047 A CN 116885047A
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coordinate system
calibration plate
under
coordinate
screen
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CN116885047B (en
Inventor
张松
袁佳汝
张喆
姚峰
李吉
周朝阳
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Wuhan DR Llaser Technology Corp Ltd
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Wuhan DR Llaser Technology Corp Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/26—Supports for workpieces for articles with flat surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/68—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for positioning, orientation or alignment
    • H01L21/681—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for positioning, orientation or alignment using optical controlling means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0224—Electrodes
    • H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H01L31/022433—Particular geometry of the grid contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/40—Screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/10—Screen printing machines characterised by their constructional features
    • B41P2215/11—Registering devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30148—Semiconductor; IC; Wafer
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The application provides a method and a system for aligning screen printing of a battery piece, and relates to the technical field of screen printing of solar batteries. Firstly acquiring a calibration plate coordinate system, then calculating the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system, then calibrating the screen to obtain the coordinate of the center point of the screen under the calibration plate coordinate system and the offset angle of the screen under the calibration plate coordinate system, then feeding the battery piece, calibrating the battery piece to obtain the coordinate of the center point of the battery piece under the calibration plate coordinate system and the offset angle of the battery piece under the calibration plate coordinate system, and finally aligning the screen with the battery piece according to the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system, the coordinate of the center point of the screen under the calibration plate coordinate system, the offset angle of the screen under the calibration plate coordinate system, the coordinate of the center point of the battery piece under the calibration plate coordinate system and the offset angle of the battery piece under the calibration plate coordinate system. In this way, the accuracy of the alignment of the screen plate and the battery piece before printing can be improved.

Description

Battery piece screen printing alignment method and system
Technical Field
The application relates to the technical field of solar cell screen printing, in particular to a method and a system for aligning screen printing of a cell.
Background
With the growing shortage of global energy, solar energy is widely valued in all countries of the world with the unique advantages of no pollution, large market space and the like. The solar energy is used for obtaining electric power, and the electric power is required to be obtained through photoelectric conversion by a solar cell, and the cell is a semiconductor electronic device which effectively absorbs solar radiation and converts the solar radiation into electric energy. In the process of manufacturing the solar cell, a grid line is manufactured on the surface of the cell by adopting a screen printing conductive paste mode, namely, an electrode of the cell, and before screen printing, the cell needs to align a printing screen plate with the cell in order to ensure the position accuracy of the printing grid line, and a position adjusting mechanism is generally adopted to adjust the position of the screen plate to align the printing screen plate and the cell at present, but the alignment accuracy of the screen plate and the cell still needs to be improved.
Disclosure of Invention
In view of the above, the application provides a method and a system for aligning a screen printing of a battery piece, which aim to improve the alignment precision of a screen plate and the battery piece before printing.
In a first aspect, the present application provides a method for aligning a battery plate by screen printing, including:
obtaining a coordinate system of a calibration plate;
calculating the coordinates of the rotation center of the UVW platform under the coordinate system of the calibration plate;
calibrating a screen to obtain a coordinate of a screen center point under the coordinate system of the calibration plate and an offset angle of the screen under the coordinate system of the calibration plate, wherein the screen is fixed on the UVW platform;
feeding a battery piece, and calibrating the battery piece to obtain a coordinate of a center point of the battery piece under the coordinate system of the calibration plate and an offset angle of the battery piece under the coordinate system of the calibration plate;
before screen printing is carried out on the battery piece, aligning the screen plate with the battery piece according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the coordinate of the center point of the screen plate under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate, the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate.
Optionally, the calculating the coordinates of the rotation center of the UVW platform in the coordinate system of the calibration plate includes:
fixing a calibration plate with M marking points on the UVW platform, and obtaining coordinate values of the marking points under a coordinate system of the calibration plate, wherein M is an integer greater than 1;
rotating the UVW platform for X times, wherein the rotation angles of each time are the same, and X is an integer greater than or equal to 1;
for each marking point, respectively acquiring coordinate values of at least two rotated marking points under the coordinate system of the calibration plate;
calculating to obtain a specific numerical value of a coordinate of a fitting circle center point according to the coordinate value of the marking point under the coordinate system of the calibration plate and the coordinate value of the rotated marking point under the coordinate system of the calibration plate, wherein the fitting circle center point is marked as O (X0, Y0);
and determining the specific numerical value of the fitted center point coordinate as the coordinate of the rotation center under the calibration plate coordinate system.
Optionally, calculating to obtain a specific value of the coordinate of the fitted center point according to the coordinate value of the mark point under the coordinate system of the calibration plate and the coordinate value of the rotated mark point under the coordinate system of the calibration plate, where the calculating includes:
and establishing a relation between the coordinate value of the marking point under the coordinate system of the calibration plate before the UVW platform rotates and the coordinate value of the marking point under the coordinate system of the calibration plate after the UVW platform rotates according to a parameter equation of a circle, and calculating the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate by eliminating the radius of the circle.
Optionally, calculating to obtain a specific value of the coordinate of the fitted center point according to the coordinate value of the mark point under the coordinate system of the calibration plate and the coordinate value of the rotated mark point under the coordinate system of the calibration plate, where the calculating includes:
the nth mark point is denoted as Pn, and the mark point after the nth mark point is rotated for the kth time is denoted as Q nk Wherein n is less than or equal to M, and k is less than or equal to X; the coordinate value of the marking point under the coordinate system of the calibration plate before rotation is marked as P n （X Pn ,Y Pn ) The coordinate value of the nth mark point under the coordinate system of the calibration plate after rotating for the kth time is Q nk （X Qnk ,Y Qnk ）；
Taking the point O as an origin as a plane rectangular coordinate system, marking the plane rectangular coordinate system as a first coordinate system, and obtaining the P n An angle alpha in the first coordinate system n The Q is nk An angle θ in the first coordinate system nk， The theta is as follows nk Is derived from said alpha n Rotating k multiplied by delta alpha, wherein delta alpha is the angle of each rotation of the UVW platform;
according to a parameter equation of a circle, the following steps are obtained:
wherein, the liquid crystal display device comprises a liquid crystal display device,is Q n(k-1) Difference from the abscissa of point O +.>Is Q n(k-1) Difference from the ordinate of point O;
and (3) calculating to obtain:
if the UVW platform is now rotating counterclockwise, then:
the simplification is obtained:
wherein:
the same is done to obtain:
and calculating to obtain the specific numerical value of the fitting center point coordinates.
Optionally, the calculating to obtain the specific value of the coordinate of the fitting center point according to the coordinate value of the marking point under the coordinate system of the calibration plate and the coordinate value of the rotated marking point under the coordinate system of the calibration plate includes:
substituting the coordinate values of all the marking points under the coordinate system of the calibration plate before rotating and the coordinate values of the marking points after rotating under the coordinate system of the calibration plate into standard equations of circles respectively to obtain M multiplied by i equations, wherein i is a positive integer, and i is less than or equal to X, and the specific equations are as follows:
wherein R is the radius of a circle, and the standard equation is developed and simplified to obtain:
writing the Mxi equations into a matrix form, and solving a linear equation set according to a least square method to obtain values of C and R;
according toAnd obtaining the specific numerical value of the fitting center point coordinates.
Optionally, the calibrating the screen plate to obtain a coordinate of a central point of the screen plate under the coordinate system of the calibration plate and an offset angle of the screen plate under the coordinate system of the calibration plate includes:
obtaining a printed pattern by using the screen printing paste;
and shooting the printed pattern by a camera, and determining the coordinate of the center point of the screen plate under the coordinate system of the calibration plate and the offset angle of the screen plate under the coordinate system of the calibration plate.
Optionally, the aligning the screen plate with the battery piece according to the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system, the coordinate of the screen plate center point under the calibration plate coordinate system, the offset angle of the screen plate under the calibration plate coordinate system, the coordinate of the battery piece center point under the calibration plate coordinate system, and the offset angle of the battery piece under the calibration plate coordinate system includes:
according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate, the rotation of the UVW platform is controlled to rotate, and the offset angle of the rotated screen plate under the coordinate system of the calibration plate is identical to the offset angle of the battery piece under the coordinate system of the calibration plate;
and controlling the UVW platform to translate according to the coordinates of the rotated screen center point under the coordinate system of the calibration plate and the coordinates of the battery piece center point under the coordinate system of the calibration plate, wherein the translated screen center point is aligned with the battery piece center point.
In a second aspect, the present application provides a battery plate screen printing alignment system comprising:
the acquisition module is used for acquiring a coordinate system of the calibration plate;
the calculation module is used for calculating the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate;
the first calibration module is used for calibrating the screen to obtain the coordinate of the center point of the screen under the coordinate system of the calibration plate and the offset angle of the screen under the coordinate system of the calibration plate, and the screen is fixed on the UVW platform;
the second calibration module is used for feeding the battery piece, calibrating the battery piece, and obtaining the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate;
and the alignment module is used for aligning the screen plate with the battery piece according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the coordinate of the center point of the screen plate under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate, the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate before carrying out screen printing on the battery piece.
In a third aspect, an embodiment of the present application provides a computer apparatus, including: the battery plate screen printing alignment method according to any one of the first aspect of the embodiment of the application is realized by a memory, a processor and a computer program stored in the memory and capable of running on the processor.
In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, where instructions are stored, which when executed on a terminal device, cause the terminal device to perform a battery plate screen printing alignment method according to any one of the first aspect of the embodiment of the present application.
The application provides a screen printing alignment method for battery plates. When the method is executed, a calibration plate coordinate system is obtained, then the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system is calculated, then the screen is calibrated to obtain the coordinate of the center point of the screen under the calibration plate coordinate system and the offset angle of the screen under the calibration plate coordinate system, wherein the screen is fixed on the UVW platform, then the battery piece is fed, the battery piece is calibrated to obtain the coordinate of the center point of the battery piece under the calibration plate coordinate system and the offset angle of the battery piece under the calibration plate coordinate system, and finally the screen is aligned with the battery piece according to the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system, the offset angle of the center point of the screen under the calibration plate coordinate system, the coordinate of the center point of the battery piece under the calibration plate coordinate system and the offset angle of the battery piece under the calibration plate coordinate system before the battery piece is subjected to screen printing. Therefore, according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the coordinate of the center point of the screen plate under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate, the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate, the screen plate and the battery piece are aligned, and the alignment precision of the screen plate and the battery piece before printing can be improved.
Drawings
In order to more clearly illustrate this embodiment or the technical solutions of the prior art, the drawings that are required for the description of the embodiment or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for aligning screen printing of a battery plate according to an embodiment of the present application;
FIG. 2 is a schematic diagram of rotating a marker point according to an embodiment of the present application;
FIG. 3 is a schematic diagram of calculating coordinates of a fitting center point according to an embodiment of the present application;
FIG. 4 is a schematic diagram of another embodiment of the present application for calculating coordinates of a center point of a fitting circle;
fig. 5 is a schematic structural diagram of a screen printing alignment system for a battery plate according to an embodiment of the application;
fig. 6 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. The application provides a method and a system for aligning screen printing of a battery piece, which are used for relating to the technical field of screen printing of solar batteries. The foregoing is merely exemplary, and is not intended to limit the application fields of the method and system name provided in the present application.
In order to better understand the aspects of the present application, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. For convenience of description, only a portion related to the present application is shown in the drawings. Embodiments of the application and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a flowchart of a method for aligning screen printing of a battery piece according to an embodiment of the present application, including:
s101: and obtaining a coordinate system of the calibration plate.
Firstly, placing a calibration plate on a table top of a feeding station, and shooting the calibration plate by a feeding station camera so as to obtain a coordinate system of the calibration plate; and then the position of the calibration plate on the table top is not changed, the table top on which the calibration plate is placed is transferred to a printing station, the printing station camera shoots the calibration plate, and the coordinate system of the calibration plate is acquired once again, so that the coordinate systems of the feeding station camera and the printing station camera are unified, and the unified purpose is to unify the positions of the battery piece and the screen plate under the same coordinate system so as to facilitate printing alignment. The calibration plate coordinate system described below may be either the calibration plate coordinate system acquired at the feed station or the calibration plate coordinate system acquired at the print station, both.
The calibration plate comprises a two-dimensional code calibration plate, a round calibration plate, a square calibration plate, a cross calibration plate and the like, and the processing precision can meet the requirements. Taking a two-dimensional code calibration plate as an example, a two-dimensional code in a checkerboard pattern is generally used as the two-dimensional code calibration plate, and a coordinate system is established through a special two-dimensional code pattern and is used for camera calibration and gesture estimation. Specifically, each two-dimensional code in the two-dimensional code calibration plate has a unique identifier and position information. When the calibration plate is manufactured, the two-dimensional codes are accurately placed on a plane according to a fixed sequence and a layout, and the layout can ensure that the distance, the angle and the direction between each two-dimensional code are known. When the camera shoots the two-dimensional code calibration plate, the pixel coordinates of each two-dimensional code and the corresponding identifier thereof can be determined by detecting and identifying the two-dimensional code, and the position and posture information of the two-dimensional code in a world coordinate system can be calculated by using the pixel coordinates of the two-dimensional code and the corresponding identifier thereof. Once the coordinate system of the two-dimensional code calibration plate is established, the camera calibration technology can be used for mapping the image coordinates to the three-dimensional world coordinates, and the application such as gesture estimation can be performed.
S102: and calculating the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate.
And fixing a calibration plate with M marking points on the UVW platform, and obtaining coordinate values of the marking points under a coordinate system of the calibration plate, wherein M is an integer greater than 1. And rotating the UVW platform for X times, wherein the rotation angle of each time is the same, and X is an integer greater than or equal to 1. And respectively acquiring coordinate values of at least two rotated mark points under the coordinate system of the calibration plate aiming at each mark point. And calculating to obtain a specific numerical value of the coordinate of the fitting circle center point according to the coordinate value of the marking point under the coordinate system of the calibration plate and the coordinate value of the rotated marking point under the coordinate system of the calibration plate, wherein the coordinate of the fitting circle center point is marked as O (X0, Y0).
And determining the specific numerical value of the fitted center point coordinate as the coordinate of the rotation center under the calibration plate coordinate system.
In this case, the marking plate having M marking points used for calculating the rotation center of the UVW platform in step S102 may be different from or the same as the marking plate used for the coordinate system of the marking plate obtained in step S101.
Specifically, as shown in fig. 2, fig. 2 is a schematic diagram illustrating rotation of a marker point according to an embodiment of the present application. In fig. 2, 2 mark points are included, namely a first mark point and a second mark point, and coordinates of the first mark point and the second mark point in a coordinate system of the calibration plate before rotation are acquired. For example, the UVW platform is rotated 5 times, and the rotation angle is the same each time. And acquiring coordinate values of at least two rotated first mark points under the coordinate system of the calibration plate, and acquiring coordinate values of at least two rotated second mark points under the coordinate system of the calibration plate. Let the fitting center point sitting mark be O (X0, Y0). Although the examples shown in fig. 2 and 3 are each a clockwise rotation of the mark point, the UVW platform may rotate clockwise or counterclockwise with the mark point, and the rotation center may be calculated and obtained.
Further, according to the coordinate value of the marking point under the coordinate system of the calibration plate and the coordinate value of the rotated marking point under the coordinate system of the calibration plate, calculating to obtain a specific value of the coordinate of the fitting circle center point, including:
and establishing a relation between the coordinate value of the mark point before the rotation of the UVW platform and the coordinate value of the mark point after the rotation in the coordinate system of the calibration plate according to a parameter equation of the circle, and calculating the coordinate of the rotation center of the UVW platform in the coordinate system of the calibration plate by eliminating the radius of the circle.
In one embodiment, the specific method for calculating the specific numerical value of the coordinate of the fitting center point according to the coordinate value of the marking point under the coordinate system of the calibration plate and the coordinate value of the rotated marking point under the coordinate system of the calibration plate is as follows:
as shown in FIG. 3, FIG. 3 is a schematic diagram showing calculation of coordinates of a fitting center point according to an embodiment of the present application, and the nth mark point is denoted as P n Marking the mark point after the nth mark point rotates for the kth time as Q nk Wherein n is less than or equal to M, k is less than or equal to X, and n and k are natural numbers; the coordinate value of the marking point under the coordinate system of the calibration plate before rotation is marked as P n （X Pn ,Y Pn ) The coordinate value of the nth mark point under the coordinate system of the calibration plate after rotating for the kth time is Q nk （X Qnk ,Y Qnk ）；
The point O is used as an origin to make a plane rectangular coordinate system and is marked as a first coordinate system, for example, the direction of the coordinate system is the same as the direction of the coordinate system of the calibration plate, and P n An angle alpha in a first coordinate system n ，Q nk An angle θ in the first coordinate system nk Wherein θ is nk Is formed by alpha n And rotating k multiplied by delta alpha, wherein delta alpha is the angle of each rotation of the UVW platform, and the angle of each rotation is the same, namely delta alpha is a fixed value.
According to a parameter equation of a circle, the following steps are obtained:
wherein, the liquid crystal display device comprises a liquid crystal display device,is Q n(k-1) Difference from the abscissa of point O +.>Is Q n(k-1) Difference from the ordinate of point O;
substituting R into equations (2), (3) yields:
if the UVW platform is now rotating counterclockwise, then:
wherein Δα is a fixed value;
substituting formula (6) into formulas (4), (5) can obtain:
expanding equation (7) to:
as a result of:
equation (9) can be further reduced to:
the same principle can be obtained:
r in the whole formula is completely eliminated so far, and only X 0 ，Y 0 Three unknowns of Δα;
the formulas (11), (12) are simplified to obtain:
wherein:
of course, P n （X Pn ,Y Pn ) And Q is equal to n1 （X Qn1 ,Y Qn1 ) Similar equations to equations (13) and (14) can be obtained from the parametric equation of a circle as well:
and calculating to obtain a specific numerical value of the coordinates of the fitting center point.
It should be noted that, the UVW platform may also rotate clockwise, and the above formula is distinguished from the formula (6), but the principle of calculating the center of a circle when the UVW platform rotates counterclockwise or clockwise is similar, and the UVW platform is a parameter equation of the circle to be adopted, so as to eliminate the influence of R.
In some cases, due to assembly of parts, equipment difference or operation difference, the distances between the plurality of marking points and the rotation center of the UVW platform are different, and if the distances between the default plurality of marking points and the rotation center of the UVW platform are the same when the rotation center of the UVW platform is calculated, the calculation of the rotation center of the UVW platform is inaccurate. In this embodiment, the unknown variable of the distances between the M marking points and the UVW platform rotation center is eliminated, so as to eliminate the influence that the distances between the plurality of marking points and the UVW platform rotation center are different, and further improve the calculation accuracy of the UVW platform rotation center.
It should be noted that, although the above equation is an equation based on the coordinate value obtained by rotating the kth time and the coordinate value row obtained by rotating the kth-1 time, the kth time and the kth-1 time are not limited to one equation for every 1 time of rotation, and may be one equation for every two times of rotation, three times of rotation, or more, but Δα in the equation set is fixed, that is, one equation is listed every same number of rotations.
S103: and calibrating the screen to obtain the coordinates of the center point of the screen under the coordinate system of the calibration plate and the offset angle of the screen under the coordinate system of the calibration plate.
And (3) printing the sizing agent by using the screen printing plate to obtain a printed pattern, shooting the printed pattern by using a camera, and determining the coordinates of the central point of the screen printing plate under the coordinate system of the calibration plate and the offset angle of the screen printing plate under the coordinate system of the calibration plate. For example, the paste is printed on the battery sheet, and the battery sheet printed with the paste is photographed by a camera.
S104: and (3) feeding the battery piece, and calibrating the battery piece to obtain the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate.
And feeding the battery piece, and calibrating the battery piece by using a camera to obtain the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate.
S105: and aligning the screen plate with the battery piece according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the coordinate of the central point of the screen plate under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate, the coordinate of the central point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate.
More specifically, step S105 includes: according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate, controlling the rotation of the UVW platform to rotate, wherein the offset angle of the screen plate after the rotation under the coordinate system of the calibration plate is the same as the offset angle of the battery piece under the coordinate system of the calibration plate;
and controlling the UVW platform to translate according to the coordinates of the rotated screen center point under the coordinate system of the calibration plate and the coordinates of the battery piece center point under the coordinate system of the calibration plate, wherein the translated screen center point is aligned with the battery piece center point.
In the embodiment of the application, a calibration plate coordinate system is obtained firstly, then, the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system is calculated, then, the screen is calibrated to obtain the coordinate of the center point of the screen under the calibration plate coordinate system and the offset angle of the screen under the calibration plate coordinate system, wherein the screen is fixed on the UVW platform, then, the battery piece is fed, the battery piece is calibrated to obtain the coordinate of the center point of the battery piece under the calibration plate coordinate system and the offset angle of the battery piece under the calibration plate coordinate system, and finally, before the battery piece is subjected to screen printing, the screen is aligned with the battery piece according to the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system, the offset angle of the center point of the screen under the calibration plate coordinate system, the coordinate of the center point of the battery piece under the calibration plate coordinate system and the offset angle of the battery piece under the calibration plate coordinate system. Therefore, according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the coordinate of the center point of the screen plate under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate, the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate, the screen plate and the battery piece are aligned, and the alignment precision of the screen plate and the battery piece before printing can be improved.
In the embodiment of the present application, there are a plurality of possible implementations of step S102 described in fig. 1, and another implementation is described below, but this is not intended to represent only those implementations of the embodiment of the present application.
Fig. 4 is a schematic diagram of fig. 4, which is another calculation of coordinates of a fitting center point according to an embodiment of the present application.
Substituting the coordinate values of all the marking points under the coordinate system of the calibration plate before rotating and the coordinate values of the marking points after rotating under the coordinate system of the calibration plate into standard equations of circles respectively to obtain M multiplied by i equations, wherein i is a positive integer and is less than or equal to X, in fig. 4, i is 10, M is 2, and the specific equations are as follows:
wherein R is the radius of a circle, and the standard equation is developed and simplified to obtain:
the 20 equations are written in matrix form:
solving a linear equation set according to a least square method to obtain values of C and R:
wherein, the liquid crystal display device comprises a liquid crystal display device,
according to
And obtaining the specific numerical value of the fitting center point coordinates.
The method can calculate the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the distances from the default points participating in calculation to the rotation center of the UVW platform are equal, and under the condition that the equipment precision can be ensured, the method has few mark points and is simple and quick.
The embodiments of the present application provide some specific implementations of a method for aligning screen printing of a battery plate, and based on this, the present application also provides a corresponding system. The system provided by the embodiment of the application will be described from the aspect of functional modularization.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a screen printing alignment system for a battery plate according to an embodiment of the application, where the screen printing alignment system 500 for a battery plate includes:
an obtaining module 510, configured to obtain a calibration plate coordinate system;
the calculation module 520 is used for calculating the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate;
the first calibration module 530 is configured to calibrate a screen to obtain a coordinate of a center point of the screen under the coordinate system of the calibration plate and an offset angle of the screen under the coordinate system of the calibration plate, where the screen is fixed on the UVW platform;
the second calibration module 540 is used for feeding the battery piece, and calibrating the battery piece to obtain the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate;
and the alignment module 550 is configured to align the screen with the battery piece according to the coordinate of the rotation center of the UVW platform under the calibration plate coordinate system, the coordinate of the center point of the screen under the calibration plate coordinate system, the offset angle of the screen under the calibration plate coordinate system, the coordinate of the center point of the battery piece under the calibration plate coordinate system, and the offset angle of the battery piece under the calibration plate coordinate system before performing screen printing on the battery piece.
Optionally, the computing module 520 includes:
the first acquisition unit is used for fixing a calibration plate with n marking points on the UVW platform, and acquiring coordinate values of the marking points under a coordinate system of the calibration plate, wherein n is an integer greater than 1;
the rotation unit is used for rotating the UVW platform for k times, the rotation angles of each rotation are the same, and k is an integer greater than 1;
the second acquisition unit is used for respectively acquiring coordinate values of at least two rotated marking points under the coordinate system of the calibration plate for each marking point;
the calculating unit is used for calculating a specific numerical value of the coordinate of the fitting circle center point according to the coordinate value of the marking point under the coordinate system of the calibration plate and the coordinate value of the rotated marking point under the coordinate system of the calibration plate, wherein the fitting circle center point is marked as O (X0, Y0);
and the determining unit is used for determining the specific numerical value of the fitting center point coordinate as the coordinate of the rotation center under the calibration plate coordinate system.
Optionally, the computing unit is specifically configured to:
marking the nth mark point as P n Marking the mark point after the nth mark point rotates for the kth time as Q nk Wherein n is less than or equal to M, and k is less than or equal to X; the coordinate value of the marking point under the coordinate system of the calibration plate is marked as P n （X Pn ,Y Pn ) The coordinate value of the nth mark point under the coordinate system of the calibration plate after rotating for the kth time is Q nk （X Qnk ,Y Qnk ）；
Taking the point O as an origin as a plane rectangular coordinate system, marking the plane rectangular coordinate system as a first coordinate system, and obtaining the P n An angle alpha in the first coordinate system n The Q is nk An angle θ in the first coordinate system nk， The theta is as follows nk Is derived from said alpha n Rotating k multiplied by delta alpha, wherein delta alpha is the angle of each rotation of the UVW platform;
according to a parameter equation of a circle, the following steps are obtained:
wherein, the liquid crystal display device comprises a liquid crystal display device,is Q n(k-1) Difference from the abscissa of point O +.>Is Q n(k-1) Difference from the ordinate of point O;
and (3) calculating to obtain:
if the UVW platform is now rotating counterclockwise, then:
the simplification is obtained:
wherein:
the same is done to obtain:
and calculating to obtain the specific numerical value of the fitting center point coordinates. Optionally, the computing unit is specifically configured to:
substituting the coordinate values of all the marking points under the coordinate system of the calibration plate and the coordinate values of the rotated marking points under the coordinate system of the calibration plate into standard equations of circles respectively to obtain M multiplied by i equations, wherein i is a positive integer, and i is less than or equal to X, and the specific equations are as follows:
wherein R is the radius of a circle, and the standard equation is developed and simplified to obtain:
writing the Mxi equations into a matrix form, and solving a linear equation set according to a least square method to obtain values of C and R;
according toAnd obtaining the specific numerical value of the fitting center point coordinates.
Optionally, the first calibration module 530 includes:
a printing unit for printing the paste by using the screen printing plate to obtain a printed pattern;
and the second determining unit is used for shooting the printed pattern through a camera, and determining the coordinate of the center point of the screen plate under the coordinate system of the calibration plate and the offset angle of the screen plate under the coordinate system of the calibration plate.
Optionally, the alignment module 550 includes:
the second rotating unit is used for controlling the rotation of the UVW platform to rotate according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate, and the offset angle of the screen plate after rotation under the coordinate system of the calibration plate is the same as the offset angle of the battery piece under the coordinate system of the calibration plate;
and the translation unit is used for controlling the UVW platform to translate according to the coordinates of the rotated screen center point under the coordinate system of the calibration plate and the coordinates of the battery piece center point under the coordinate system of the calibration plate, and the screen center point after translation is aligned with the battery piece center point.
As shown in fig. 6, the computer device 01 is in the form of a general purpose computing device. The components of the computer device 01 may include, but are not limited to: one or more processors or processing units 03, a system memory 08, and a bus 04 that connects the various system components (including the system memory 08 and processing units 03).
Bus 04 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, and a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
The computer device 01 typically includes a variety of computer system readable media. Such media can be any available media that can be accessed by the computer device 01 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 08 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 09 and/or cache memory 10. The computer device 01 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 11 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 6, commonly referred to as a "hard disk drive"). Although not shown in fig. 6, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be coupled to bus 04 through one or more data medium interfaces. The memory 08 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the embodiments of the application.
A program/utility 12 having a set (at least one) of program modules 13 may be stored in, for example, memory 08, such program modules 13 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 13 typically carry out the functions and/or methods of the embodiments described herein.
The computer device 01 may also communicate with one or more external devices 02 (e.g., keyboard, pointing device, display 07, etc.), one or more devices that enable a user to interact with the computer device 01, and/or any devices (e.g., network card, modem, etc.) that enable the computer device 01 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 06. Moreover, the computer device 01 may also communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through the network adapter 05. As shown in fig. 6, the network adapter 05 communicates with other modules of the computer device 01 via the bus 04. It should be appreciated that although not shown in fig. 6, other hardware and/or software modules may be used in connection with the computer device 01, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
The processor unit 03 executes various functional applications and data processing by running a program stored in the system memory 08, for example, to implement a battery plate screen printing alignment method provided in an embodiment of the present application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of embodiments, it will be apparent to those skilled in the art that all or part of the steps of the above described example methods may be implemented in software plus general hardware platforms. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a read-only memory (ROM)/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a router) to perform the method according to the embodiments or some parts of the embodiments of the present application.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present application without undue burden.
The foregoing description of the exemplary embodiments of the application is merely illustrative of the application and is not intended to limit the scope of the application.

Claims (10)

1. A method of screen printing alignment of battery cells, comprising:
obtaining a coordinate system of a calibration plate;
calculating the coordinates of the rotation center of the UVW platform under the coordinate system of the calibration plate;
calibrating a screen to obtain a coordinate of a screen center point under the coordinate system of the calibration plate and an offset angle of the screen under the coordinate system of the calibration plate, wherein the screen is fixed on the UVW platform;
feeding a battery piece, and calibrating the battery piece to obtain a coordinate of a center point of the battery piece under the coordinate system of the calibration plate and an offset angle of the battery piece under the coordinate system of the calibration plate;
before screen printing is carried out on the battery piece, aligning the screen plate with the battery piece according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the coordinate of the center point of the screen plate under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate, the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate.
2. The method of claim 1, wherein calculating the coordinates of the UVW platform center of rotation under the calibration plate coordinate system comprises:
fixing a calibration plate with M marking points on the UVW platform, and obtaining coordinate values of the marking points under a coordinate system of the calibration plate, wherein M is an integer greater than 1;
rotating the UVW platform for X times, wherein the rotation angles of each time are the same, and X is an integer greater than or equal to 1;
for each marking point, respectively acquiring coordinate values of at least two rotated marking points under the coordinate system of the calibration plate;
calculating to obtain a specific numerical value of a coordinate of a fitting circle center point according to the coordinate value of the marking point under the coordinate system of the calibration plate and the coordinate value of the rotated marking point under the coordinate system of the calibration plate, wherein the fitting circle center point is marked as O (X0, Y0);
and determining the specific numerical value of the fitted center point coordinate as the coordinate of the rotation center under the calibration plate coordinate system.
3. The method according to claim 2, wherein calculating a specific value of the coordinates of the fitting center point according to the coordinate values of the mark point in the calibration plate coordinate system and the coordinate values of the rotated mark point in the calibration plate coordinate system includes:
and establishing a relation between the coordinate value of the marking point under the coordinate system of the calibration plate before the UVW platform rotates and the coordinate value of the marking point under the coordinate system of the calibration plate after the UVW platform rotates according to a parameter equation of a circle, and calculating the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate by eliminating the radius of the circle.
4. A method according to claim 3, wherein calculating a specific value of the coordinates of the fitting center point according to the coordinate values of the mark point in the calibration plate coordinate system and the coordinate values of the rotated mark point in the calibration plate coordinate system comprises:
marking the nth mark point as P n Marking the mark point after the nth mark point rotates for the kth time as Q nk Wherein n is less than or equal to M, and k is less than or equal to X; the coordinate value of the marking point under the coordinate system of the calibration plate before rotation is marked as P n （X Pn ,Y Pn ) The coordinate value of the nth mark point under the coordinate system of the calibration plate after rotating for the kth time is Q nk （X Qnk ,Y Qnk ）；
Taking the point O as an origin as a plane rectangular coordinate system, marking the plane rectangular coordinate system as a first coordinate system, and obtaining the P n An angle alpha in the first coordinate system n The Q is nk An angle θ in the first coordinate system nk， The theta is as follows nk Is derived from said alpha n Rotating k multiplied by delta alpha, wherein delta alpha is the angle of each rotation of the UVW platform;
according to a parameter equation of a circle, the following steps are obtained:
wherein (1)>Is Q n(k-1) Difference from the abscissa of point O +.>Is Q n(k-1) Difference from the ordinate of point O;
and (3) calculating to obtain:
if the UVW platform is now rotating counterclockwise, then:
simplified to obtain：
Wherein:
the same is done to obtain:
and calculating to obtain the specific numerical value of the fitting center point coordinates.
5. The method according to claim 2, wherein calculating the specific value of the fitting center point coordinate according to the coordinate value of the mark point in the calibration plate coordinate system and the coordinate value of the rotated mark point in the calibration plate coordinate system includes:
substituting the coordinate values of all the marking points under the coordinate system of the calibration plate before rotating and the coordinate values of the marking points after rotating under the coordinate system of the calibration plate into standard equations of circles respectively to obtain M multiplied by i equations, wherein i is a positive integer, and i is less than or equal to X, and the specific equations are as follows:
wherein R is the radius of a circle, and the standard equation is developed and simplified to obtain:
writing the Mxi equations into a matrix form, and solving a linear equation set according to a least square method to obtain values of C and R;
according toAnd obtaining the specific numerical value of the fitting center point coordinates.
6. The method according to claim 1, wherein the calibrating the screen to obtain the coordinates of the center point of the screen in the coordinate system of the calibration plate and the offset angle of the screen in the coordinate system of the calibration plate includes:
obtaining a printed pattern by using the screen printing paste;
and shooting the printed pattern by a camera, and determining the coordinate of the center point of the screen plate under the coordinate system of the calibration plate and the offset angle of the screen plate under the coordinate system of the calibration plate.
7. The method of claim 1, wherein said aligning the screen with the battery cells based on the coordinates of the UVW platform center of rotation under the calibration plate coordinate system, the coordinates of the screen center point under the calibration plate coordinate system, the offset angle of the screen under the calibration plate coordinate system, the coordinates of the battery cell center point under the calibration plate coordinate system, and the offset angle of the battery cell under the calibration plate coordinate system, comprises:
according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate, the rotation of the UVW platform is controlled to rotate, and the offset angle of the rotated screen plate under the coordinate system of the calibration plate is identical to the offset angle of the battery piece under the coordinate system of the calibration plate;
and controlling the UVW platform to translate according to the coordinates of the rotated screen center point under the coordinate system of the calibration plate and the coordinates of the battery piece center point under the coordinate system of the calibration plate, wherein the translated screen center point is aligned with the battery piece center point.
8. A battery plate screen printing alignment system, comprising:
the acquisition module is used for acquiring a coordinate system of the calibration plate;
the calculation module is used for calculating the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate;
the first calibration module is used for calibrating the screen to obtain the coordinate of the center point of the screen under the coordinate system of the calibration plate and the offset angle of the screen under the coordinate system of the calibration plate, and the screen is fixed on the UVW platform;
the second calibration module is used for feeding the battery piece, calibrating the battery piece, and obtaining the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate;
and the alignment module is used for aligning the screen plate with the battery piece according to the coordinate of the rotation center of the UVW platform under the coordinate system of the calibration plate, the coordinate of the center point of the screen plate under the coordinate system of the calibration plate, the offset angle of the screen plate under the coordinate system of the calibration plate, the coordinate of the center point of the battery piece under the coordinate system of the calibration plate and the offset angle of the battery piece under the coordinate system of the calibration plate before carrying out screen printing on the battery piece.
9. A computer device, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, which when executed, implements the battery plate screen printing alignment method of any of claims 1-7.
10. A computer readable storage medium having instructions stored therein which, when run on a terminal device, cause the terminal device to perform the battery cell screen printing alignment method of any of claims 1-7.
CN202311149483.7A 2023-09-07 2023-09-07 Battery piece screen printing alignment method and system Active CN116885047B (en)

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CN101169595A (en) * 2007-11-28 2008-04-30 上海微电子装备有限公司 Calibration device for aligning system of stepper and its calibration method
CN102673106A (en) * 2012-05-09 2012-09-19 华中科技大学 Silk screen print positioning equipment and method for photovoltaic solar silicon chip
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