CN116692603A - Control method for reducing winding needle of winding machine, electronic equipment and storage medium - Google Patents
Control method for reducing winding needle of winding machine, electronic equipment and storage medium Download PDFInfo
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- CN116692603A CN116692603A CN202210185330.7A CN202210185330A CN116692603A CN 116692603 A CN116692603 A CN 116692603A CN 202210185330 A CN202210185330 A CN 202210185330A CN 116692603 A CN116692603 A CN 116692603A
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- 238000004804 winding Methods 0.000 title claims abstract description 188
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000003860 storage Methods 0.000 title claims abstract description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 238000004364 calculation method Methods 0.000 claims abstract description 14
- 238000012216 screening Methods 0.000 claims abstract description 12
- 238000012937 correction Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 description 11
- 239000013072 incoming material Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000004809 Teflon Substances 0.000 description 5
- 229920006362 Teflon® Polymers 0.000 description 5
- 238000003491 array Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
- B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
-
- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a control method of a reducing winding needle of a winding machine, electronic equipment and a storage medium, comprising the following steps: detecting the tab width value of the tab group of the battery cell after each coil stock rubberizing through an image sensor; performing difference calculation on at least one tab width value and a preset tab width theoretical value to obtain a tab width difference value; screening the tab width difference values to obtain at least one effective difference value, wherein all the effective difference values are positive numbers or negative numbers, and the effective difference value is positioned in a preset allowable adjustment interval; and calculating the adjustment quantity of the reducing winding needle according to the effective difference value, and controlling the driving assembly based on the adjustment quantity of the reducing winding needle to adjust the winding diameter of the reducing winding needle. According to the invention, the tab width difference value is obtained in a detection mode of the image sensor, so that the production efficiency is improved; the effective difference value is screened, and the ineffective difference value is removed, so that the adjustment quantity of the reducing rolling needle is more accurate, and the product yield is improved; the rolling diameter of the reducing rolling needle is adjusted by controlling the driving assembly, so that the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of battery manufacturing equipment, and particularly relates to a control method of a reducing winding needle of a winding machine, electronic equipment and a storage medium.
Background
In the production process of the winding machine, the separator, the anode and the cathode are used up in a material roll, and the incoming materials need to be replaced. However, due to the fact that the thickness of the isolating film of the incoming material fluctuates between 30um and 40um, the thickness of the isolating film incoming material is unstable, the thickness of the positive plate and the negative plate deviates, the die cutting size of the tab incoming material deviates, and the like, the coiled battery core tab is misplaced. The existing winding machine in the market is a mode of changing the circumference of a winding needle by sticking teflon on the surface of the winding needle through observing the dislocation amount and the dislocation direction of the battery cell through manual experience, so as to adjust the dislocation of the tab of the battery cell. However, the mode has manual intervention and adjustment, no data support exists, and the effect of stable alignment of the tabs can be achieved only by multiple times of adjustment for one-time material changing, so that the adjustment efficiency is low and the yield is low.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the invention provides a control method for a variable-diameter winding needle of a winding machine, electronic equipment and a storage medium, which can improve the adjustment efficiency and the yield of products.
In a first aspect, an embodiment of the present invention provides a method for controlling a reducing needle of a winding machine, which is applied to a controller in the winding machine, where the winding machine further includes an image sensor, a driving assembly, and a reducing needle, the controller is in communication with the image sensor, and the controller is further configured to adjust the reducing needle through the driving assembly;
the control method comprises the following steps:
detecting the tab width value of the tab group of the battery cell after each coil stock rubberizing through the image sensor;
performing difference calculation on at least one tab width value and a preset tab width theoretical value to obtain a tab width difference value;
screening the tab width difference values to obtain at least one effective difference value, wherein all the effective difference values are positive numbers or negative numbers, and the effective difference values are located in a preset allowable adjustment interval;
and calculating the adjustment quantity of the reducing rolling needle according to the effective difference value, and controlling the driving assembly based on the adjustment quantity of the reducing rolling needle so as to adjust the rolling diameter of the reducing rolling needle.
In some embodiments, the detecting, by the image sensor, the tab width value of the tab group of the battery cell after each coil is rubberized, includes:
Collecting image information of the tab group of the current core after each coil stock rubberizing through the image sensor;
carrying out identification processing on the image information to identify a first tab and a last tab in the tab group;
calculating a first distance value between the first tab and a preset reference position, and calculating a second distance value between the last tab and the preset reference position;
and calculating according to the first distance value and the second distance value to obtain a tab width value.
In some embodiments, the filtering the tab width difference value includes:
acquiring the image acquisition times and preset deviation correction frequency of the image sensor;
and when the image acquisition times reach the deviation correction frequency, screening the tab width difference value.
In some embodiments, the filtering the tab width difference value to obtain at least one effective difference value includes one of:
classifying the tab width difference values to obtain a first array of tab width difference values which are only stored as positive numbers; removing the tab width difference value with the absolute value outside a preset allowable adjustment interval from the first array to obtain a new first array storing at least one effective difference value;
Classifying the tab width difference values to obtain a second array of tab width difference values which are only stored as negative numbers; and eliminating the tab width difference value with the absolute value outside the preset allowable adjustment interval from the second array to obtain a new second array storing at least one effective difference value.
In some embodiments, the calculating the reducing needle roller adjustment according to the effective difference value includes one of:
sorting all the effective difference values to obtain sorted effective difference values; calculating a median value from the ordered effective difference values, and calculating to obtain the variable-diameter winding needle adjustment quantity according to the median value;
and calculating the average value of all the effective difference values, and calculating the adjustment quantity of the reducing rolling needle according to the average value.
In some embodiments, the reducing winding needle is provided with a reducing slider provided with a bevel for adjusting the winding diameter of the reducing winding needle; the control method comprises one of the following steps:
under the condition that the median value is adopted to calculate the variable diameter winding needle adjustment quantity, the formula for calculating the variable diameter winding needle adjustment quantity according to the median value is as follows: variable diameter winding needle adjustment = median/number of winding turns of the cell/pi/Tan θ; wherein θ is an inclination angle of the inclined plane;
When the average value is adopted to calculate the variable diameter winding needle adjustment quantity, the formula for calculating the variable diameter winding needle adjustment quantity according to the average value is as follows: variable diameter winding needle adjustment = average value/cell winding number/pi/Tan θ; wherein θ is the inclination angle of the inclined plane.
In some embodiments, the preset allowable adjustment interval is a numerical interval that is greater than a preset tab width adjustment threshold and less than a preset maximum limit value of needle adjustment, where the tab width adjustment threshold is used to define whether the diameter of the reducing needle needs to be adjusted, and the maximum limit value of needle adjustment is used to characterize the maximum adjustment amplitude of the reducing needle.
In some embodiments, the tab set is an anode tab set or a cathode tab set, the tab width difference is positive and indicates that the tab is displaced toward the outer edge of the cell, and the tab width difference is negative and indicates that the tab is displaced toward the middle of the cell.
In a second aspect, an embodiment of the present invention further provides an electronic device, including: the control method for the reducing winding needle of the winding machine according to the first aspect is realized by the processor when the processor executes the computer program.
In a third aspect, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions for executing the control method for a reducing needle of a winding machine according to the first aspect.
The embodiment of the invention comprises the following steps: firstly, the embodiment of the invention can detect the tab width value of the tab group of the battery cell after each coil material rubberizing through the image sensor; then, carrying out difference calculation on at least one tab width value and a preset tab width theoretical value to obtain a tab width difference value; then, screening the tab width difference values to obtain at least one effective difference value, wherein all the effective difference values are positive numbers or negative numbers, and the effective difference values are located in a preset allowable adjustment interval; finally, the embodiment of the invention calculates the adjustment amount of the reducing winding needle according to the effective difference value, and controls the driving assembly based on the adjustment amount of the reducing winding needle to adjust the winding diameter of the reducing winding needle. According to the technical scheme of the embodiment of the invention, firstly, the tab width difference value is obtained through the detection mode of the image sensor, which is different from the mode of observing the battery cell through manual experience in the prior art, so that the production efficiency is improved; secondly, the embodiment of the invention also screens out effective difference values from the tab width difference values, eliminates ineffective difference values, and enables the diameter-variable winding needle adjustment amount obtained by subsequent calculation to be more accurate, thereby improving the yield of products; finally, the embodiment of the invention adjusts the winding diameter of the reducing winding needle by controlling the driving assembly, which is different from the mode of changing the circumference of the winding needle by sticking the Teflon in the prior art, thereby improving the production efficiency.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
FIG. 1 is a flow chart of a method for controlling a variable diameter winding needle of a winding machine according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for controlling a reducing needle of a winding machine according to another embodiment of the present invention;
FIG. 3 is a flowchart of a method for controlling a reducing needle of a winding machine according to another embodiment of the present invention;
FIG. 4 is a flowchart of a method for controlling a reducing needle of a winding machine according to another embodiment of the present invention;
FIG. 5 is a flowchart of a method for controlling a reducing needle of a winding machine according to another embodiment of the present invention;
FIG. 6 is a flowchart of a method for controlling a reducing needle of a winding machine according to another embodiment of the present invention;
FIG. 7 is a flowchart of a method for controlling a reducing needle of a winding machine according to another embodiment of the present invention;
FIG. 8 is a schematic view of a reducing needle according to an embodiment of the present invention;
FIG. 9 is a schematic view of a portion of the diameter-variable winding needle shown in FIG. 8;
fig. 10 is a schematic structural view of a control device for a reducing needle of a winding machine according to an embodiment of the present invention;
fig. 11 is a schematic hardware structure of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to be limiting of the invention.
At present, in the production process of the winding machine, the separator, the anode and the cathode are used up due to the fact that the material rolls are used up, and the incoming materials need to be replaced. However, due to the fact that the thickness of the isolating film of the incoming material fluctuates between 30um and 40um, the thickness of the isolating film incoming material is unstable, the thickness of the positive plate and the negative plate deviates, the die cutting size of the tab incoming material deviates, and the like, the coiled battery core tab is misplaced. The existing winding machine in the market is a mode of changing the circumference of a winding needle by sticking teflon on the surface of the winding needle through observing the dislocation amount and the dislocation direction of the battery cell through manual experience, so as to adjust the dislocation of the tab of the battery cell. However, the mode has manual intervention and adjustment, no data support exists, and the effect of stable alignment of the tabs can be achieved only by multiple times of adjustment for one-time material changing, so that the adjustment efficiency is low and the yield is low.
Based on this, the embodiment of the invention provides a control method for a reducing winding needle of a winding machine, a control device for the reducing winding needle of the winding machine, electronic equipment and a computer readable storage medium, which comprise the following steps: firstly, the embodiment of the invention can detect the tab width value of the tab group of the battery cell after each coil material rubberizing through the image sensor; then, carrying out difference calculation on at least one tab width value and a preset tab width theoretical value to obtain a tab width difference value; then, screening the tab width difference values to obtain at least one effective difference value, wherein all the effective difference values are positive numbers or negative numbers, and the effective difference values are located in a preset allowable adjustment interval; finally, the embodiment of the invention calculates the adjustment amount of the reducing winding needle according to the effective difference value, and controls the driving assembly based on the adjustment amount of the reducing winding needle to adjust the winding diameter of the reducing winding needle. According to the technical scheme of the embodiment of the invention, firstly, the tab width difference value is obtained through the detection mode of the image sensor, which is different from the mode of observing the battery cell through manual experience in the prior art, so that the production efficiency is improved; secondly, the embodiment of the invention also screens out effective difference values from the tab width difference values, eliminates ineffective difference values, and enables the diameter-variable winding needle adjustment amount obtained by subsequent calculation to be more accurate, thereby improving the yield of products; finally, the embodiment of the invention adjusts the winding diameter of the reducing winding needle by controlling the driving assembly, which is different from the mode of changing the circumference of the winding needle by sticking the Teflon in the prior art, thereby improving the production efficiency.
The embodiment of the invention provides a control method, a device, electronic equipment and a storage medium for a reducing needle of a winding machine, and specifically describes the control method for the reducing needle of the winding machine.
As shown in fig. 1, fig. 1 is a flowchart of a control method for a reducing winding needle of a winding machine according to an embodiment of the present invention; the control method of the reducing winding needle of the winding machine is applied to a controller in the winding machine, the winding machine further comprises an image sensor, a driving assembly and the reducing winding needle, the controller is communicated with the image sensor, and the controller is further used for adjusting the reducing winding needle through the driving assembly.
The control method of the embodiment of the present invention may include, but is not limited to, including step S100, step S200, step S300, and step S400.
Step S100, detecting the tab width value of the tab group of the battery cell after each coil stock rubberizing through an image sensor;
step 200, performing difference calculation on at least one tab width value and a preset tab width theoretical value to obtain a tab width difference;
step S300, screening the tab width difference values to obtain at least one effective difference value, wherein all the effective difference values are positive numbers or negative numbers, and the effective difference values are located in a preset allowable adjustment interval;
Step S400, calculating to obtain the adjustment quantity of the reducing winding needle according to the effective difference value, and controlling the driving assembly to adjust the winding diameter of the reducing winding needle based on the adjustment quantity of the reducing winding needle.
Specifically, according to the embodiment of the invention, firstly, the consistency of a plurality of winding needles is manually adjusted until the electric cores wound by the winding needles of the same material roll are free from dislocation, so that the adjustment quantity of the winding needles can be consistent when the diameter of the variable-diameter winding needle is adjusted at one time, and the consistency of adjustment results is ensured; then, after the battery cell winding is completed and the station is changed to a position for attaching the ending glue, photographing the tab group of the battery cell through an image sensor, and detecting the tab width value of the tab group of the battery cell after the battery cell is coiled and glued each time according to image information; then, after the battery core is coiled and rubberized for many times, a plurality of tab width values are obtained, and difference value calculation is carried out on the tab width values and preset tab width theoretical values respectively to obtain a plurality of tab width difference values; because the difference values of the width of each tab contain difference values in different directions or invalid difference values, the embodiment of the invention can screen the difference values of the width of each tab to screen at least one valid difference value; finally, the embodiment of the invention calculates the adjustment quantity of the reducing winding needle according to the effective difference value, and controls the driving assembly based on the adjustment quantity of the reducing winding needle, thereby adjusting the winding diameter of the reducing winding needle.
According to the technical scheme of the embodiment of the invention, firstly, the tab width difference value is obtained through the detection mode of the image sensor, which is different from the mode of observing the battery cell through manual experience in the prior art, so that the production efficiency is improved; secondly, the embodiment of the invention also screens out effective difference values from the plurality of tab width difference values, eliminates ineffective difference values, and enables the diameter-variable winding needle adjustment amount obtained by subsequent calculation to be more accurate, thereby improving the yield of products; finally, the embodiment of the invention adjusts the winding diameter of the reducing winding needle by controlling the driving assembly, which is different from the mode of changing the circumference of the winding needle by sticking the Teflon in the prior art, thereby improving the production efficiency.
It should be noted that, regarding the tab group, a plurality of tabs are included, wherein, a plurality of tabs are arranged in a stacked manner, and the tab group includes a first tab, a plurality of middle tabs and a last tab.
In addition, it is understood that the image sensor described above may be, but is not limited to, a CCD image sensor.
In addition, as shown in fig. 2, fig. 2 is a flowchart of a control method for a reducing needle of a winding machine according to an embodiment of the present invention; regarding the above step S100, it may include, but is not limited to, steps S110, S120, S130, and S140.
Step S110, acquiring image information of the tab group of the current core after each coil stock rubberizing through an image sensor;
step S120, carrying out identification processing on the image information, and identifying a first tab and a last tab in the tab group;
step S130, calculating a first distance value between the first tab and a preset reference position, and calculating a second distance value between the last tab and the preset reference position;
and step 140, calculating to obtain a tab width value according to the first distance value and the second distance value.
Specifically, in the embodiment of the invention, after the battery cell winding is completed and the station is changed to the position of attaching the ending glue, the image sensor is adopted to carry out photographing detection on the tab group of the battery cell. Specifically, a first distance between a first tab of the battery core and a reference is detected by taking a position marked by the winding needle, namely a preset reference position, and a first distance between a last tab of the battery core and the reference is detected at the same time, and finally, a tab width value is calculated according to the first distance and the second distance.
The tab width value may be calculated by calculating the difference between the first distance and the second distance.
In addition, as shown in fig. 3, fig. 3 is a flowchart of a control method for a reducing needle of a winding machine according to another embodiment of the present invention; regarding the above step S300, it may include, but is not limited to, including step S310 and step S320.
Step S310, acquiring the image acquisition times and the preset deviation correction frequency of an image sensor;
and step 320, when the image acquisition times reach the correction frequency, screening the tab width difference value.
Specifically, in the production process, photographing is carried out once every time when a normally coiled battery cell is glued, and the photographing times, namely the image acquisition times, are recorded; in addition, a variable parameter can be preset for setting the deviation rectifying frequency, and when the value of the image acquisition times is equal to the set deviation rectifying frequency, the diameter-variable needle rolling adjustment is performed once.
It should be noted that the deviation rectifying frequency in the embodiment of the present invention may be set according to human experience.
In addition, as shown in fig. 4 and fig. 5, fig. 4 and fig. 5 are flowcharts of a control method for a reducing needle of a winding machine according to another embodiment of the present invention.
As shown in fig. 4, regarding the above-described step S300, including, but not limited to, step S331 and step S332 may be included.
Step S331, classifying the tab width differences to obtain a first array of tab width differences only stored as positive numbers;
and S332, eliminating the tab width difference value with the absolute value outside the preset allowable adjustment interval from the first array to obtain a new first array storing at least one effective difference value.
As shown in fig. 5, regarding the above-described step S300, including, but not limited to, step S341 and step S342 may be included.
Step S341, classifying the tab width differences to obtain a second array of tab width differences stored as a negative number only;
and S342, eliminating the tab width difference value with the absolute value outside the preset allowable adjustment interval from the second array to obtain a new second array storing at least one effective difference value.
Based on the above-mentioned method flows in fig. 4 and 5, specifically, the tab width difference effective value classification process: and according to the obtained position information of the innermost lug and the width information of the outermost lug, which are positioned on the driving assembly and the reducing winding needle, calculating a difference value by referring to the position information of the innermost lug, wherein the width value of the outermost lug is the lug width value of the tab group after rubberizing, if the difference value is positive, the tab is dislocated towards the outer edge direction of the battery cell, and if the difference value is negative, the tab is dislocated towards the middle direction of the battery cell. And judging the positive and negative directions through the data result fed back by the image sensor, and separately caching the positive value and the negative value by using a first array and a second array, wherein the first array only caches the positive value, and the second array only caches the negative value. And then, taking absolute values of the tab width differences in the first array or the second array, and comparing the absolute values with a preset allowable adjustment interval, wherein the tab width differences with the absolute values in the preset allowable adjustment interval are valid, and the tab width differences outside the preset allowable adjustment interval are directly removed.
It should be noted that, the preset allowable adjustment interval is a numerical interval that is greater than a preset tab width adjustment threshold and less than a preset maximum limit value of the winding needle adjustment, where the tab width adjustment threshold is used to define whether the winding diameter of the reducing winding needle needs to be adjusted, and the maximum limit value of the winding needle adjustment is used to characterize the maximum adjustment amplitude of the reducing winding needle.
In addition, it should be noted that the tab width difference value is positive and represents that the tab is dislocated toward the outer edge of the battery cell, and the tab width difference value is negative and represents that the tab is dislocated toward the middle of the battery cell.
In addition, as shown in fig. 6 and fig. 7, fig. 6 and fig. 7 are flowcharts of a control method for a reducing needle of a winding machine according to another embodiment of the present invention.
As shown in fig. 6, regarding the variable diameter winding needle adjustment amount calculated according to the effective difference in the above step S400, it may include, but is not limited to, steps S411 and S412.
Step S411, sorting all the effective difference values to obtain sorted effective difference values;
and step S412, calculating a median value from the sorted effective difference values, and calculating the variable-diameter winding needle adjustment according to the median value.
As shown in fig. 7, regarding the variable diameter winding needle adjustment amount calculated according to the effective difference in the above step S400, it may include, but is not limited to, steps S421 and S422.
Step S421, calculating the average value of all the effective difference values;
and step 422, calculating according to the average value to obtain the variable-diameter winding needle adjustment quantity.
Based on the above-mentioned method flows in fig. 6 and fig. 7, specifically, the embodiment of the present invention may perform ascending order according to the numerical values by using the bubbling ordering method, so as to calculate the median or average value.
It should be noted that, as shown in fig. 8 and fig. 9, fig. 8 is a schematic structural diagram of a reducing needle according to an embodiment of the present invention; FIG. 9 is a schematic view of a portion of the diameter-variable winding needle shown in FIG. 8; the reducing winding needle of the embodiment of the invention comprises two needle bodies 100, wherein the two needle bodies 100 are provided with reducing sliding blocks 110, the reducing sliding blocks 110 are provided with inclined planes 111 for adjusting the winding diameter of the reducing winding needle, and in addition, each needle body is connected to a winding needle threading motor through a driving shaft 200.
It should be noted that, in the case of calculating the reducing needle adjustment amount by using the median value, the formula for calculating the reducing needle adjustment amount according to the median value is as follows: variable diameter winding needle adjustment = median/number of winding turns of the cell/pi/Tan θ; wherein θ is the inclination angle of the inclined plane.
In addition, it is noted that, in the case of calculating the reducing needle adjusting amount by using the average value, the formula of calculating the reducing needle adjusting amount from the average value is as follows: variable diameter winding needle adjustment = average value/cell winding number/pi/Tan θ; wherein θ is the inclination angle of the inclined plane.
Wherein, the calculation formula of the average value is as follows: average = sum of all effective differences/deskew frequency. Therefore, the above formula for calculating the variable diameter winding needle adjustment amount from the average value can be changed to: variable diameter winding needle adjustment = sum of all effective differences/correction frequency/number of winding turns of the cell/pi/Tan θ.
Based on the embodiments of fig. 1 to 9, it should be noted that the tab set is an anode tab set or a cathode tab set.
Based on the embodiments of fig. 1 to 9, the variable diameter winding needle adjustment amount is specifically a displacement amount by which the winding needle threading motor protrudes, and as shown in fig. 9, the variable diameter winding needle adjustment amount is specifically a relative displacement amount between the two driving shafts 200 in the axial direction.
Based on the embodiments of fig. 1 to fig. 9, an overall scheme of the embodiment of the present invention is provided, which specifically includes the following steps:
1. the consistency of the three-needle winding needle is manually adjusted, so that the electric core wound by the same material winding three-needle winding needle is free from dislocation, the consistency of the adjustment quantity of the three needles when the reducing winding needle adjusts the winding diameter at one time is ensured, and the consistency of the adjustment result is ensured.
2. The CCD image sensor detects the width of the cathode lug and the anode lug;
And after the battery cell winding is completed and the station is changed to the position of attaching the ending glue, the CCD is used for photographing and detecting the anode tab and the cathode tab of the battery cell. And detecting the distance between the first electrode lug of the battery cell anode and the last electrode lug of the anode relative to the reference by taking the position marked by the winding needle as the reference, and calculating the width L1 of the anode electrode lug. Similarly, the cathode tab width L2 is calculated.
3. Calibrating the tab width of a perfect battery cell, recording the anode tab width B1 (unit/mm) and the cathode tab width B2 (unit/mm) of the perfect battery cell, and calculating the difference value X1 = L1-B1 and X2 = L2-B2 between the current detection battery cell and the tab width of the perfect battery cell by taking the tab width of the perfect battery cell as a reference.
4. An anode tab width threshold Y1 (unit/mm) and a cathode tab width threshold Y2 (unit/mm) are set at the interpersonal interface for judging whether the rolling diameter adjustment is performed. Setting a maximum limit value Ym (unit/mm) of needle adjustment, and limiting the calculated parameters to exceed the adjustable range of the diameter-variable needle.
5. In the production process, a normally wound battery cell is photographed once after each rubberizing, and the photographing times Cout1 (unit/EA) are recorded. And setting a variable parameter F (unit/EA) on the human-computer interface for setting the deviation rectifying frequency, and executing one-time diameter-changing rolling needle adjustment when the value of the recorded photographing times Cout1 is equal to the set adjusting frequency F.
6. The polarities of the tab width differences X1 and X2 are classified and cached:
(1) classifying the effective value of the anode tab width difference value X1;
and according to the obtained position information of the innermost lug and the width information of the outermost lug, which are positioned on the driving assembly and the reducing winding needle, calculating a difference value by referring to the position information of the innermost lug, wherein the width value of the outermost lug is the lug width value of the tab group after rubberizing, if the difference value is positive, the tab is dislocated towards the outer edge direction of the battery cell, and if the difference value is negative, the tab is dislocated towards the middle direction of the battery cell. And judging the positive and negative directions through the data result fed back by the CCD, and separately caching the positive value and the negative value by using an array A and an array B, wherein the array A only caches the positive value, and the array B only caches the negative value. And the absolute value of the tab width difference value X1 is taken, and is compared with the threshold value Y1 and the maximum limit value Ym, so that the data with the absolute value larger than the threshold value Y1 and smaller than the maximum limit value Ym are valid, and the data with the exceeding range are directly removed.
(2) Classifying the effective value of the width difference value X2 of the cathode tab;
and performing range judgment on X2 based on the anode tab width difference value X1 effective value classification processing, screening effective data, caching the positive value into an array C, and caching the negative value into an array D for caching.
7. And calculating the anode adjustment quantity of the winding needle threading motor through the arrays A and B.
(1) Calculating an adjustment amount by a median; the data buffered in the arrays A and B are sorted in ascending order according to the numerical value by an bubbling sorting method, and the median values M1 (unit/mm) and M2 (unit/mm) are respectively calculated, and then the data are calculated by one of the following formulas:
anode adjustment amount (unit/mm) =m1/winding turns of the battery cell/pi/Tan θ of the winding needle threading motor;
the anode adjustment amount (unit/mm) of the needle threading motor extension of the winding needle is=m2/winding turns of the cell/pi/Tan theta.
(2) Calculating the anode adjustment quantity of the extension of the needle threading motor of the needle winding machine by the average value; then the calculation is performed by one of the following formulas:
for example, if array A includes 9 effective differences, the anode adjustment of the needle threading motor extension = ((A0 + A1 + A2 + A3 + A4 + A5 + A6 + A7 + A8)/offset frequency F)/cell winding number/pi/Tan θ;
for example, if array B includes 9 effective differences, the anode adjustment of the needle threading motor extension = ((B0+B1+B2+B3+B4+B5+B6+B7+B8)/offset frequency F)/cell winding number/pi/Tan θ.
8. And calculating the cathode adjustment quantity of the winding needle threading motor through the arrays C and D.
(1) Calculating an adjustment amount by a median; the data buffered in the arrays C and D are sorted in ascending order according to the numerical values by an bubbling sorting method, and the median values M3 (unit/mm) and M4 (unit/mm) are respectively calculated, and then the data are calculated by one of the following formulas:
cathode adjustment amount (unit/mm) of the needle threading motor extending out of the winding needle=m3/winding turns of the battery cell/pi/Tan theta;
cathode adjustment amount (unit/mm) of the needle threading motor extension of the winding needle=m4/winding turns of the cell/pi/Tan θ.
(2) Calculating the cathode adjustment quantity of the extension of the needle threading motor of the winding needle by the average value; then the calculation is performed by one of the following formulas:
for example, if array C includes 9 effective differences, the cathode adjustment of the needle threading motor extension = ((C0+C1+C2+C3+C4+C5+C6+C7+C8)/offset frequency F)/cell winding number/pi/Tan θ;
for example, if array D includes 9 effective differences, the cathode adjustment amount of the needle threading motor extension= ((D0+D1+D2+D3+D4+D5+D6+D7+D8)/offset frequency F)/cell winding number/pi/Tan θ.
Referring to fig. 10, an embodiment of the present invention further provides a control device for a reducing needle of a winding machine, which can implement the above method for controlling a reducing needle of a winding machine, where the control device 300 for a reducing needle of a winding machine includes:
A width value calculating unit 310, configured to detect, by using an image sensor, a tab width value of a tab group of the battery cell after each coil is rubberized;
the difference calculating unit 320 is configured to perform difference calculation on at least one tab width value and a preset tab width theoretical value to obtain a tab width difference value;
the difference value screening unit 330 is configured to screen the tab width difference value to screen at least one effective difference value, where all the effective difference values are positive or negative, and the effective difference value is located in a preset allowable adjustment interval;
the adjusting unit 340 is configured to calculate an adjustment amount of the reducing needle according to the effective difference, and control the driving assembly to adjust the diameter of the reducing needle based on the adjustment amount of the reducing needle.
The specific implementation of the control device for the reducing winding needle of the winding machine is basically the same as the specific example of the control method for the reducing winding needle of the winding machine, and is not repeated here.
The embodiment of the invention also provides electronic equipment, which comprises: the control method for the variable-diameter winding needle of the winding machine comprises a memory, a processor, a program stored in the memory and capable of running on the processor, and a data bus for realizing connection communication between the processor and the memory, wherein the program is executed by the processor. The electronic equipment can be any intelligent terminal including a tablet personal computer, a vehicle-mounted computer and the like.
Referring to fig. 11, fig. 11 illustrates a hardware structure of an electronic device according to another embodiment, the electronic device includes:
the processor 410 may be implemented by a general-purpose CPU (central processing unit), a microprocessor, an application-specific integrated circuit (ApplicationSpecificIntegratedCircuit, ASIC), or one or more integrated circuits, etc. for executing related programs to implement the technical solutions provided by the embodiments of the present invention;
memory 420 may be implemented in the form of read-only memory (ReadOnlyMemory, ROM), static storage, dynamic storage, or random access memory (RandomAccessMemory, RAM). The memory 420 may store an operating system and other application programs, and when the technical solution provided in the embodiments of the present disclosure is implemented by software or firmware, relevant program codes are stored in the memory 420, and the processor 410 invokes a control method for executing the variable diameter winding pin of the winding machine according to the embodiments of the present disclosure;
an input/output interface 430 for implementing information input and output;
the communication interface 440 is configured to implement communication interaction between the present device and other devices, and may implement communication in a wired manner (e.g. USB, network cable, etc.), or may implement communication in a wireless manner (e.g. mobile network, WIFI, bluetooth, etc.); and
Bus 450 transfers information between the various components of the device (e.g., processor 410, memory 420, input/output interface 430, and communication interface 440);
wherein processor 410, memory 420, input/output interface 430, and communication interface 440 enable communication connections within the device between each other via bus 450.
The embodiment of the invention also provides a storage medium which is a computer readable storage medium and is used for computer readable storage, the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors so as to realize the control method of the variable diameter winding needle of the winding machine.
The memory, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located relative to the processor, the remote memory being connectable to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The embodiments described in the embodiments of the present invention are for more clearly describing the technical solutions of the embodiments of the present invention, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention, and those skilled in the art can know that, with the evolution of technology and the appearance of new application scenarios, the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
It will be appreciated by those skilled in the art that the solutions shown in fig. 1-9 are not limiting on the embodiments of the invention and may include more or fewer steps than shown, or certain steps may be combined, or different steps.
The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. 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 appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.
The terms "first," "second," "third," "fourth," and the like in the description of the invention and in the above figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in the present invention, "at least one (item)" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is merely a logical function division, and there may be another division manner in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including multiple instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the various embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing a program.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not thereby limiting the scope of the claims of the embodiments of the present invention. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the embodiments of the present invention shall fall within the scope of the claims of the embodiments of the present invention.
Claims (10)
1. The control method for the reducing winding needle of the winding machine is characterized by being applied to a controller in the winding machine, wherein the winding machine further comprises an image sensor, a driving assembly and the reducing winding needle, the controller is communicated with the image sensor, and the controller is further used for adjusting the reducing winding needle through the driving assembly;
the control method comprises the following steps:
detecting the tab width value of the tab group of the battery cell after each coil stock rubberizing through the image sensor;
performing difference calculation on at least one tab width value and a preset tab width theoretical value to obtain a tab width difference value;
screening the tab width difference values to obtain at least one effective difference value, wherein all the effective difference values are positive numbers or negative numbers, and the effective difference values are located in a preset allowable adjustment interval;
and calculating the adjustment quantity of the reducing rolling needle according to the effective difference value, and controlling the driving assembly based on the adjustment quantity of the reducing rolling needle so as to adjust the rolling diameter of the reducing rolling needle.
2. The control method according to claim 1, wherein the detecting, by the image sensor, the tab width value of the tab group of the battery cell after each coil stock rubberizing, includes:
Collecting image information of the tab group of the current core after each coil stock rubberizing through the image sensor;
carrying out identification processing on the image information to identify a first tab and a last tab in the tab group;
calculating a first distance value between the first tab and a preset reference position, and calculating a second distance value between the last tab and the preset reference position;
and calculating according to the first distance value and the second distance value to obtain a tab width value.
3. The control method according to claim 1, wherein the filtering the tab width difference comprises:
acquiring the image acquisition times and preset deviation correction frequency of the image sensor;
and when the image acquisition times reach the deviation correction frequency, screening the tab width difference value.
4. The control method according to claim 1, wherein the step of screening the tab width difference value to obtain at least one effective difference value includes one of:
classifying the tab width difference values to obtain a first array of tab width difference values which are only stored as positive numbers; removing the tab width difference value with the absolute value outside a preset allowable adjustment interval from the first array to obtain a new first array storing at least one effective difference value;
Classifying the tab width difference values to obtain a second array of tab width difference values which are only stored as negative numbers; and eliminating the tab width difference value with the absolute value outside the preset allowable adjustment interval from the second array to obtain a new second array storing at least one effective difference value.
5. The control method according to claim 1, wherein the calculating the reducing needle adjustment amount according to the effective difference value includes one of:
sorting all the effective difference values to obtain sorted effective difference values; calculating a median value from the ordered effective difference values, and calculating to obtain the variable-diameter winding needle adjustment quantity according to the median value;
and calculating the average value of all the effective difference values, and calculating the adjustment quantity of the reducing rolling needle according to the average value.
6. The control method according to claim 5, characterized in that the reducing winding needle is provided with a reducing slider provided with a slope for adjusting the winding diameter of the reducing winding needle; the control method comprises one of the following steps:
under the condition that the median value is adopted to calculate the variable diameter winding needle adjustment quantity, the formula for calculating the variable diameter winding needle adjustment quantity according to the median value is as follows: variable diameter winding needle adjustment = median/number of winding turns of the cell/pi/Tan θ; wherein θ is an inclination angle of the inclined plane;
When the average value is adopted to calculate the variable diameter winding needle adjustment quantity, the formula for calculating the variable diameter winding needle adjustment quantity according to the average value is as follows: variable diameter winding needle adjustment = average value/cell winding number/pi/Tan θ; wherein θ is the inclination angle of the inclined plane.
7. The control method according to any one of claims 1 to 6, wherein the preset allowable adjustment interval is a numerical interval that is greater than a preset tab width adjustment threshold and less than a preset winding needle adjustment maximum limit value, wherein the tab width adjustment threshold is used to define whether the winding diameter of the reducing winding needle needs to be adjusted, and the winding needle adjustment maximum limit value is used to characterize a maximum adjustment amplitude of the reducing winding needle.
8. The control method according to any one of claims 1 to 6, wherein the tab group is an anode tab group or a cathode tab group, the tab width difference value is positive number indicating that the tab is dislocated toward the outer edge of the cell, and the tab width difference value is negative number indicating that the tab is dislocated toward the middle of the cell.
9. An electronic device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the control method according to any one of claims 1 to 8 when the computer program is executed.
10. A computer-readable storage medium, characterized in that computer-executable instructions for performing the control method according to any one of claims 1 to 8 are stored.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210185330.7A CN116692603A (en) | 2022-02-28 | 2022-02-28 | Control method for reducing winding needle of winding machine, electronic equipment and storage medium |
| PCT/CN2022/140362 WO2023160175A1 (en) | 2022-02-28 | 2022-12-20 | Control method for variable-diameter winding needle of winding machine, and electronic device and storage medium |
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| CN202210185330.7A CN116692603A (en) | 2022-02-28 | 2022-02-28 | Control method for reducing winding needle of winding machine, electronic equipment and storage medium |
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| CN109524704B (en) * | 2018-11-21 | 2021-06-08 | 无锡先导智能装备股份有限公司 | Tab dislocation adjusting method and system, electronic equipment and storage medium |
| JP7239444B2 (en) * | 2019-10-24 | 2023-03-14 | Ckd株式会社 | Winding device |
| CN113241464A (en) * | 2021-03-31 | 2021-08-10 | 广东利元亨智能装备股份有限公司 | Winding needle with adjustable outer circumference, winding machine and winding needle outer circumference adjusting method |
| CN214706012U (en) * | 2021-03-31 | 2021-11-12 | 广东利元亨智能装备股份有限公司 | Adjustable book needle of outer perimeter and winder |
| CN113224367A (en) * | 2021-03-31 | 2021-08-06 | 广东利元亨智能装备股份有限公司 | Winding needle outer circumference adjusting device, winding machine and winding needle outer circumference adjusting method |
| CN214706011U (en) * | 2021-03-31 | 2021-11-12 | 广东利元亨智能装备股份有限公司 | Winding needle outer circumference adjusting device and winding machine |
| CN113300057B (en) * | 2021-05-24 | 2022-10-25 | 广东利元亨智能装备股份有限公司 | Lug dislocation adjusting method and system |
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