CN115200489A - Detection tool, lithium battery industry module PACK range finder and camera calibration method - Google Patents
Detection tool, lithium battery industry module PACK range finder and camera calibration method Download PDFInfo
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- CN115200489A CN115200489A CN202210686920.8A CN202210686920A CN115200489A CN 115200489 A CN115200489 A CN 115200489A CN 202210686920 A CN202210686920 A CN 202210686920A CN 115200489 A CN115200489 A CN 115200489A
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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
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a detection tool, a calibration method of a PACK (picture archiving and communication system) distance measuring instrument and a camera of a module in the lithium battery industry, and the calibration method comprises a support base, a top cover concave surface platform and a top cover, wherein the support base is arranged on the ground; the calibration method comprises the following steps: step S1: installing a standard battery top cover on the detection tool, and determining absolute position coordinates (X, Y) of the battery top cover; step S2: a code scanning gun scans codes; and step S3: calibrating the CCD camera and the range finder; and step S4: shooting Mark points by a CCD camera; step S5: the CCD camera takes a picture of the pole, the distance meter measures the height of the pole; step S6: and (6) laser cleaning.
Description
Technical Field
The invention relates to the field of lithium battery detection, in particular to a detection tool and a calibration method of a PACK distance meter and a camera in a lithium battery industry module.
Background
In module and PACK manufacturing process, the whole flow of module is roughly: cell loading, OCV testing, plasma cleaning, cell gluing, module stacking, module insulation testing, pole photographing and cleaning, manual Busbar mounting, busbar welding, EOL testing, DCR testing and module offline; in the whole process, the CCD camera and the range finder use the most stations for post shooting cleaning and bus bar welding, the accuracy of the measured values of the CCD camera and the range finder directly influences the quality of products, even directly results in scrapping of the products after bus bar welding, the scrapping loss amount of one product is different from thousands to tens of thousands, and if batch welding scrapping occurs, the caused loss is immeasurable.
In the prior art, the accuracy of the shooting coordinate and the distance measurement value of the CCD is difficult to monitor in actual production, when the CCD shoots, the difference between the X coordinate and the Y coordinate of the shot and the X coordinate and the Y coordinate of the actual pole column exceeds 1mm, the welded welding circle may cause the melting of the plastic part of the pole column, the leakage of the pole column is caused, and the module or the battery pack is scrapped; the range finder distance measurement is worth the inaccuracy, can lead to out of focus volume in the welding process too big or too little, probably causes the postweld rosin joint.
For example, an integrated energy storage battery module and a manufacturing method disclosed in chinese patent document, whose publication number is CN114267864a, includes that the melting of the plastic part of the terminal post caused by the too large difference between the actual coordinate and the coordinate of the terminal post in the battery welding circle, which causes the leakage of the terminal post, the scrapping of the module or the battery pack, and the inaccuracy of the distance measurement value of the distance meter, which may cause the large or small defocusing amount in the welding process, and the cold welding after welding, etc., are easily occurred in the whole module manufacturing process.
Disclosure of Invention
The invention provides a detection tool and a calibration method of a module PACK distance meter and a camera in the lithium battery industry, aiming at overcoming the problems that in the prior art, the accuracy of a photographing coordinate and a distance measurement value of a CCD (charge coupled device) in the manufacturing process of the module and the PACK is easy to monitor in the actual production process, the difference of the X coordinate and the Y coordinate recorded during photographing of the CCD and the X coordinate of an actual pole exceeds 1mm, so that plastic parts of the pole are melted, liquid leakage of the pole is caused, the module or a battery PACK is scrapped, the distance measurement value of the distance meter is inaccurate, the defocusing amount is larger or smaller in the welding process, and the problem of insufficient welding after welding is caused.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a detect frock, includes support base, top cap concave surface platform and top cap triplex, support pedestal mounting on ground, detect frock and area and detect main part equipment and part, top cap concave surface platform horizontal installation is on supporting the base, the top cap covers the connection and installs on top cap concave surface platform.
Preferably, the supporting base comprises two symmetrical supporting columns, the thickness of each supporting column is 50mm, and the peripheral gap between the top cover and the top cover concave platform is not more than 0.2mm.
Detect the frock and install subaerial, guaranteed its independence and stability, at equipment operation in-process, equipment all can have slight vibrations, will detect the frock and part with the main part equipment to will detect the frock and install on ground, the vibrations on ground are very little, can not cause the top cap levelness that detects the frock surface to receive the influence, reduce to lead to the numerical deviation to appear in the testing process because of ground stationarity problem.
Avoided in advance because CCD camera hardware problem and distancer hardware problem, the inaccuracy of the measured data that causes leads to the fact at last in the Busbar welding process, because of the condition that the product quality is low that leads to of scrapping of module and PACK.
A calibration method for a PACK range finder and a camera of a lithium battery industry module comprises the following steps:
step S1: installing a standard battery top cover on the detection tool, and determining absolute position coordinates (X, Y) of the battery top cover;
step S2: scanning the bar code of the module/PACK through a code scanning gun to obtain the information of the product to be detected;
and step S3: after the product information is obtained, the CCD camera is used for photographing the detected object with a fixed position to obtain photographing coordinates (X1 and Y1), the photographing coordinates are compared with the absolute position coordinates in the step S1, if the absolute value of X-X1 is more than or equal to 1mm or the absolute value of Y-Y1 is more than or equal to 1mm, the equipment is alarmed and stopped, and manual detection is carried out;
and step S4: shooting Mark point coordinates at two ends of a PACK by a CCD camera at a post shooting and cleaning station, recording the coordinates as post shooting clear station coordinate axes, and manually installing a busbar;
step S5: the method comprises the following steps that a CCD camera shoots all polar columns of a module/PACK, coordinate information (X1, Y1), (X2, Y2) … (Xn, yn) of all the polar columns is obtained, absolute position relations of all the polar columns and Mark point coordinates are obtained, the position coordinates are stored in CCD shooting software, data are obtained when a Busbar welding station conducts calling, and accurate welding is conducted through the obtained data;
step S6: and after the steps are completed and the welding is completed, carrying out a laser cleaning process to clean an oxide layer on the surface of the pole and impurities on the surface of the pole.
The invention adds one layer of protection in the operation of the equipment, automatically stops the equipment and solves the problem of manual troubleshooting under the condition that the CCD shoots NG or measures distance NG, thereby avoiding the condition that the shooting coordinate data is wrong due to the manual setting error of CCD software parameters and finally a module and a PACK are scrapped during Busbar welding in advance.
Preferably, the step S2 includes the following steps:
step S2-1: scanning the bar code of the module/PACK through a code scanning gun to obtain the information of the product to be detected;
step S2-2: and calling a robot program, a PLC program and a CCD program of the product in the PLC according to the product information obtained in the step S2-1.
Preferably, the step S3 includes the steps of:
step S3-1: when the distance measuring instrument is used for measuring the detection tool for the first time, the numerical value on the distance measuring instrument is set to be zero;
step S3-2: taking a measured value on the detection tool as a zero point, and measuring the distance of the battery top cover on the detection tool before the distance measuring instrument measures the distance each time;
step S3-3: comparing the distance measurement value of the battery top cover in the step S3-3 with a set zero position distance measurement value, and setting an upper limit and a lower limit of a difference value of 0.5 mm;
step S3-4: and (4) setting the measured value in the step (S3-3) as H, and if the distance measurement value | H | is more than or equal to 0.5mm, alarming and stopping the equipment, and manually checking the looseness of the distance measuring instrument.
Preferably, the step S4 includes the steps of:
step S4-1: obtaining the absolute position relation of the Mark point and the coordinates of all polar columns through the coordinates (X1, Y1) of the Mark point at the Busbar welding station;
step S4-2: reversely deducing the relative position coordinates of all the poles at the Busbar welding station according to the absolute position relation of the coordinates obtained in the step S3-1;
step S4-3: and (3) sending the position coordinate of the pole at the Busbar welding station to CCD software through the relative position coordinate in the step (S3-2), and controlling the light emitting offset of the galvanometer through the CCD.
Preferably, the step S5 includes the steps of:
step S5-1: the distance measuring instrument measures the heights of all the busbars and sets the measured heights as H;
step S5-2: and sending the measured height H to a PLC (programmable logic controller), and under the condition that the set out-of-focus amount of the Busbar welding is not changed, the Z-axis height of the welding Z-axis servo/welding robot can rise or fall H, and the constant welding out-of-focus amount is kept as a constant value.
The welding defocusing amount kept constant is a constant value, the welding quality is ensured, the product quality defect caused by photographing and ranging data acquisition errors is reduced or scrapped by the whole scheme, and the waste of materials and artificial resources caused by abnormal production is greatly reduced.
Therefore, the invention has the following beneficial effects:
the detection workpieces are independently installed and fixed on the ground, so that the independence and the stability of the detection workpieces are guaranteed, and the problem that the quality of a produced battery is reduced due to the fact that the subsequent detection result is deviated due to the influence of the levelness of the top cover on the surfaces of the detection workpieces is solved;
the method avoids the condition that the measured data is inaccurate due to the hardware problem of the CCD camera and the hardware problem of the distance measuring instrument, and finally the product quality is low due to the scrapping of the module and the PACK in the Busbar welding process;
the welding defocusing amount kept constant is a constant value, the welding quality is ensured, the product quality defect caused by photographing and ranging data acquisition errors is reduced or scrapped by the whole scheme, and the waste of materials and artificial resources caused by abnormal production is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of a workpiece inspection apparatus according to the present invention;
FIG. 2 is a top cover structure view of the inspection tool of the present invention;
FIG. 3 is a flow chart of a calibration method of the present invention.
Wherein, 1, a base is supported; 2. a top cover concave platform; 3. and a top cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the invention comprises a detection tool, which comprises a support base 1, a top cover concave platform 2 and a top cover 3, wherein the support base is arranged on the ground, the detection tool is separated from a device with a detection main body, the top cover concave platform is horizontally arranged on the support base, and the top cover is covered, connected and arranged on the top cover concave platform.
The supporting base comprises two symmetrical supporting columns, the thickness of each supporting column is 50mm, and the peripheral gap between the top cover and the top cover concave platform is not more than 0.2mm.
The detection tool is arranged on the ground, so that the independence and the stability of the detection tool are ensured, the equipment can vibrate slightly in the operation process of the equipment, the detection tool is separated from the main equipment, the detection tool is arranged on the ground, the vibration of the ground is very small, and the levelness of a top cover on the surface of the detection tool cannot be influenced; two support columns of supporting the base are the symmetry setting, and the thickness of support column is 50mm, and the material is the stainless steel, has guaranteed the stability of supporting the base.
The levelness of the installation position of the detection tool is less than 0.03mm/m, and the detection tool cannot be installed on the equipment and is independent from the equipment; installing a standard battery top cover on a detection tool, taking a picture through a CCD (charge coupled device), determining absolute position coordinates (X, Y) of the battery top cover, taking a picture of the battery top cover on the detection tool before the CCD takes the picture each time to obtain the position coordinates (X1, Y1) of the battery top cover, comparing the position coordinates (X1, Y1) with the preset position coordinates (X, Y), if the absolute value of X-X1 is more than or equal to 1mm or the absolute value of Y-Y1 is more than or equal to 1mm, alarming and stopping the equipment, and manually checking whether a focal ring of a CCD camera of the equipment is loosened or whether the top cover is loosened; similarly, because it is very high to detect the frock levelness, when the distancer first measured and detects the frock, set zero the value above the distancer to the measured value above the detection frock is zero bit, before the distancer is surveyed at every turn, earlier carry out the range finding to the battery top cap above the detection frock, compare with the range finding value 0mm who sets for, set up 0.5 mm's difference upper and lower limits, if this time measured value is H, range finding value | H | ≧ 0.5mm, equipment warning is shut down, whether the manual work is examined the distancer and is become flexible.
As shown in fig. 3, the present invention includes a calibration method for a lithium battery industry module PACK range finder and a camera, comprising the steps of:
step S1: installing a standard battery top cover on the detection tool, and determining absolute position coordinates (X, Y) of the battery top cover;
step S2: scanning the bar code of the module/PACK through a code scanning gun to obtain the information of the product to be detected;
and step S3: after the product information is obtained, the CCD camera is used for photographing the detected object with a fixed position to obtain photographing coordinates (X1 and Y1), the photographing coordinates are compared with the absolute position coordinates in the step S1, if the absolute value of X-X1 is more than or equal to 1mm or the absolute value of Y-Y1 is more than or equal to 1mm, the equipment is alarmed and stopped, and manual detection is carried out;
and step S4: shooting Mark point coordinates at two ends of a PACK by a CCD camera at a post shooting and cleaning station, recording the coordinates as post shooting clear station coordinate axes, and manually installing a busbar;
step S5: the method comprises the following steps that a CCD camera shoots all polar columns of a module/PACK, coordinate information (X1, Y1), (X2, Y2) … (Xn, yn) of all the polar columns is obtained, absolute position relations of all the polar columns and Mark point coordinates are obtained, the position coordinates are stored in CCD shooting software, data are obtained when a Busbar welding station conducts calling, and accurate welding is conducted through the obtained data;
step S6: and after the steps are completed and the welding is completed, carrying out a laser cleaning process to clean an oxide layer on the surface of the pole and impurities on the surface of the pole.
The invention adds one layer of protection in the operation of the equipment, automatically stops the equipment and solves the problem of manual troubleshooting under the condition that the CCD shoots NG or measures distance NG, thereby avoiding the condition that the shooting coordinate data is wrong due to the manual setting error of CCD software parameters and finally a module and a PACK are scrapped during Busbar welding in advance.
The step S2 includes the following steps:
step S2-1: scanning the bar code of the module/PACK by a code scanning gun to obtain the information of the product to be detected;
step S2-2: and calling a robot program, a PLC program and a CCD program of the product in the PLC according to the product information obtained in the step S2-1.
The step S3 includes the steps of:
step S3-1: when the distance measuring instrument is used for measuring the detection tool for the first time, the numerical value on the distance measuring instrument is set to be zero;
step S3-2: taking a measured value on the detection tool as a zero point, and measuring the distance of the battery top cover on the detection tool before the distance measuring instrument measures the distance each time;
step S3-3: comparing the distance measurement value of the battery top cover in the step S3-3 with a set zero distance measurement value, and setting an upper limit and a lower limit of a difference value of 0.5 mm;
step S3-4: and (4) determining the measured value in the step (S3-3) as H, and if the distance measurement value | H | is more than or equal to 0.5mm, alarming and stopping the equipment, and manually checking the looseness of the distance measuring instrument.
The step S4 includes the steps of:
step S4-1: obtaining the absolute position relation of the Mark point and the coordinates of all the poles through the coordinates (X1, Y1) of the Mark point at the Busbar welding station;
step S4-2: reversely deducing the relative position coordinates of all the poles at the Busbar welding station according to the absolute position relation of the coordinates obtained in the step S3-1;
step S4-3: and (3) sending the position coordinate of the pole at the Busbar welding station to CCD software through the relative position coordinate in the step (S3-2), and controlling the light emitting offset of the galvanometer through the CCD.
The step S5 includes the steps of:
step S5-1: the distance measuring instrument measures the heights of all the busbars and sets the measured heights as H;
step S5-2: and sending the measured height H to a PLC (programmable logic controller), and under the condition that the set out-of-focus amount of the Busbar welding is not changed, the Z-axis height of the welding Z-axis servo/welding robot can rise or fall H, and the constant welding out-of-focus amount is kept as a constant value.
On the basis of the prior process flow, the invention increases the rechecking work of the CCD camera and the range finder, adds one layer of protection in the operation of the equipment, automatically stops the equipment under the condition that the CCD takes a picture or measures the distance NG, manually checks the problems, ensures the accuracy of the CCD camera and the range finder before working each time, and greatly reduces the product quality loss caused by the problems of the CCD camera body and the range finder body.
Compared with the prior process flow, the improved Busbar welding station increases the calibration work of the CCD camera and the distance meter through the improved process flow, and the specific differences are as follows:
the method comprises the following steps that (1) a Mark point is shot by a CCD (charge coupled device), the position coordinate (X1, Y1) of the Mark point at a Busbar welding station at the moment is obtained, because the absolute position relation of the Mark point and the coordinates of all polar columns is obtained by the module/PACK at a polar column shooting and cleaning station, the relative position coordinates of all polar columns at the Busbar welding station can be reversely deduced, then the position coordinates of the polar columns at the Busbar welding station are sent to CCD software, and the offset of light emission of a vibrating mirror is controlled through the CCD; the distance measuring instrument distance measuring-distance measuring instrument measures the heights of all busbars and then sends the measured height H to the PLC, under the condition that the defocusing amount of the set Busbar welding is not changed, the height of the welding Z-axis servo/welding robot Z can rise or fall H, the constant welding defocusing amount is kept to be a constant value, and the welding quality is ensured.
The structure, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the above embodiments are only preferred embodiments of the present invention, and it should be understood that the technical features related to the above embodiments and the preferred modes thereof can be reasonably combined and configured into various equivalent schemes by those skilled in the art without departing from and changing the design idea and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, and all the modifications and equivalent embodiments that can be made according to the idea of the invention are within the scope of the invention as long as they are not beyond the spirit of the description and the drawings.
Claims (7)
1. The utility model provides a detect frock, characterized by comprises support base, top cap concave surface platform and top cap triplex, support the base and install subaerial, detect frock and take and detect main part equipment and part, top cap concave surface platform horizontal installation is on supporting the base, the top cap covers to connect and installs on top cap concave surface platform.
2. The detection tool according to claim 1, wherein the support base comprises two symmetrical support columns, the thickness of each support column is 50mm, and the peripheral gap between the top cover and the top cover concave platform is not more than 0.2mm.
3. A calibration method for a PACK range finder and a camera in a lithium battery industry module is characterized by comprising the following steps:
step S1: installing a standard battery top cover on the detection tool, and determining absolute position coordinates (X, Y) of the battery top cover;
step S2: scanning the bar code of the module/PACK through a code scanning gun to obtain the information of the product to be detected;
and step S3: after the product information is obtained, the CCD camera is used for photographing the detected object with a fixed position to obtain photographing coordinates (X1 and Y1), the photographing coordinates are compared with the absolute position coordinates in the step S1, if the absolute value of X-X1 is more than or equal to 1mm or the absolute value of Y-Y1 is more than or equal to 1mm, the equipment is alarmed and stopped, and manual detection is carried out;
and step S4: shooting Mark point coordinates at two ends of a PACK by a CCD camera at a post shooting and cleaning station, recording the coordinates as post shooting clear station coordinate axes, and manually installing a busbar;
step S5: the method comprises the following steps that a CCD camera shoots all polar columns of a module/PACK, coordinate information (X1, Y1), (X2, Y2) … (Xn, yn) of all the polar columns is obtained, absolute position relations of all the polar columns and Mark point coordinates are obtained, the position coordinates are stored in CCD shooting software, data are obtained when a Busbar welding station conducts calling, and accurate welding is conducted through the obtained data;
step S56: and after the steps are completed and the welding is completed, carrying out a laser cleaning process to clean an oxide layer on the surface of the pole and impurities on the surface of the pole.
4. The calibration method for the PACK range finder and the camera in the lithium battery industry module according to claim 3, wherein the step S2 comprises the following steps:
step S2-1: scanning the bar code of the module/PACK by a code scanning gun to obtain the information of the product to be detected;
step S2-2: and calling a robot program, a PLC program and a CCD program of the product in the PLC according to the product information obtained in the step S2-1.
5. The calibration method for the PACK range finder and the camera in the lithium battery industry module according to claim 3, wherein the step S3 comprises the following steps:
step S3-1: when the distance measuring instrument is used for measuring the detection tool for the first time, the numerical value on the distance measuring instrument is set to be zero;
step S3-2: taking a measured value on the detection tool as a zero point, and measuring the distance of the battery top cover on the detection tool before the distance measuring instrument measures the distance each time;
step S3-3: comparing the distance measurement value of the battery top cover in the step S3-3 with a set zero distance measurement value, and setting an upper limit and a lower limit of a difference value of 0.5 mm;
step S3-4: and (4) determining the measured value in the step (S3-3) as H, and if the distance measurement value | H | is more than or equal to 0.5mm, alarming and stopping the equipment, and manually checking the looseness of the distance measuring instrument.
6. The calibration method for the PACK range finder and the camera in the lithium battery industry module according to claim 3, wherein the step S4 comprises the following steps:
step S4-1: obtaining the absolute position relation of the Mark point and the coordinates of all the poles through the coordinates (X1, Y1) of the Mark point at the Busbar welding station;
step S4-2: reversely deducing the relative position coordinates of all the poles at the Busbar welding station according to the absolute position relation of the coordinates obtained in the step S3-1;
step S4-3: and (3) sending the position coordinate of the pole at the Busbar welding station to CCD software through the relative position coordinate in the step (S3-2), and controlling the light emitting offset of the galvanometer through the CCD.
7. The calibration method for the PACK range finder and the camera in the lithium battery industry module according to claim 3, wherein the step S5 comprises the following steps:
step S5-1: the distance measuring instrument measures the heights of all the busbars and sets the measured heights as H;
step S5-2: and sending the measured height H to a PLC (programmable logic controller), and under the condition that the set out-of-focus amount of the Busbar welding is not changed, the Z-axis height of the welding Z-axis servo/welding robot can rise or fall H, and the constant welding out-of-focus amount is kept as a constant value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115950488A (en) * | 2023-03-10 | 2023-04-11 | 超音速人工智能科技股份有限公司 | Lithium battery full-line production quality detection method, system and platform |
| CN116921854A (en) * | 2023-07-07 | 2023-10-24 | 上海君屹工业自动化股份有限公司 | Method for setting defocusing amount of BUSBAR welding |
-
2022
- 2022-06-16 CN CN202210686920.8A patent/CN115200489A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115950488A (en) * | 2023-03-10 | 2023-04-11 | 超音速人工智能科技股份有限公司 | Lithium battery full-line production quality detection method, system and platform |
| CN116921854A (en) * | 2023-07-07 | 2023-10-24 | 上海君屹工业自动化股份有限公司 | Method for setting defocusing amount of BUSBAR welding |
| CN116921854B (en) * | 2023-07-07 | 2024-03-29 | 上海君屹工业自动化股份有限公司 | Method for setting defocusing amount of BUSBAR welding |
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