CN-116692603-B - Control method for reducing winding needle of winding machine, electronic equipment and storage medium

CN116692603BCN 116692603 BCN116692603 BCN 116692603BCN-116692603-B

Abstract

The invention provides a control method, electronic equipment and storage medium of a reducing winding needle of a winding machine, which comprise the steps of detecting tab width values of tab groups of a battery cell after rubberizing of winding materials each time through an image sensor, carrying out difference calculation on at least one tab width value and a preset tab width theoretical value to obtain tab width difference values, 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, the effective difference values are located in a preset allowable adjustment interval, calculating to obtain a reducing winding needle adjustment quantity according to the effective difference values, and controlling a driving assembly to adjust the winding diameter of the reducing winding needle based on the reducing winding needle adjustment quantity. The invention obtains the tab width difference value through the detection mode of the image sensor, improves the production efficiency, eliminates the invalid difference value through screening the valid difference value, ensures that the adjustment quantity of the reducing winding needle is more accurate, improves the product yield, and improves the production efficiency by controlling the driving component to adjust the winding diameter of the reducing winding needle.

Inventors

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Assignees

广东利元亨智能装备股份有限公司

Dates

Publication Date: 20260512
Application Date: 20220228

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: the tab width difference value is classified to obtain a first array of tab width difference values which are only stored as positive numbers, and the tab width difference values with absolute values outside a preset allowable adjustment interval are removed from the first array to obtain a new first array which is stored with at least one effective difference value; and eliminating the tab width difference value with the absolute value outside a 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: The method comprises the steps of sorting all the effective difference values to obtain sorted effective difference values, calculating a median value from the sorted effective difference values, and calculating according to the median value to obtain the variable diameter rolling needle adjustment quantity; 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, wherein the reducing winding needle is provided with a reducing slider provided with a slope for adjusting a winding diameter of the reducing winding needle, the control method comprising one of: 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, wherein the variable diameter winding needle adjustment quantity = median value/number of winding turns of the battery core/pi/Tan theta; under the condition that the average value is adopted to calculate the variable diameter winding needle adjustment quantity, a formula for calculating the variable diameter winding needle adjustment quantity according to the average value is as follows, wherein the variable diameter winding needle adjustment quantity = average value/cell winding circle number/pi/Tan theta, and the theta 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 a 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 executing the computer program.
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.

Description

Control method for reducing winding needle of winding machine, electronic equipment and storage medium 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: the tab width difference value is classified to obtain a first array of tab width difference values which are only stored as positive numbers, and the tab width difference values with absolute values outside a preset allowable adjustment interval are removed from the first array to obtain a new first array which is stored with at least one effective difference value; and eliminating the tab width difference value with the absolute value outside a 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