Roll core tab control system and method

Abstract

The invention discloses a roll core tab control system and method, and the system comprises the steps: arranging thickness measurement laser sensors at the upper and lower sides of a pole piece, driving the thickness measurement laser sensors to move through a moving module, measuring the thickness data of measurement points at different positions of the pole piece, training a pole piece thickness-laser cutting-variable diameter winding needle algorithm model, and calculating the thickness of the pole piece. And calculating the thickness of the pole piece based on the thickness data of the measuring points, inputting the thickness of the pole piece into a pole piece thickness-laser cutting-variable diameter winding needle algorithm model to obtain a laser cutting adjustment value and a variable diameter winding needle adjustment value, and controlling the laser cutting and the variable diameter winding needle to complete corresponding mechanism actions. According to the invention, real-time adjustment of tab spacing and pole piece winding can be realized, post-feedback adjustment of a traditional method is avoided, and the yield of winding cores and the operation efficiency of a production line are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery manufacturing, and in particular to a winding core tab control system and method. Background Art

[0002] In the process of the electrode passing through the winding equipment to form the core, it is very easy to cause problems such as pole ear misalignment and poor electrode coverage. Defects will cause the core to be scrapped, reduce the core yield rate, increase the time for manual processing of defective cores, waste labor costs and reduce the efficiency of production line operation.

[0003] At present, in the actual production process, the position of the pole lug and the winding of the pole piece can only be adjusted when the pole lug is misaligned and the pole piece coverage is poor. That is, post-feedback of the pole lug misalignment and poor pole piece coverage is performed, which makes the adjustment of the pole lug misalignment and pole piece winding seriously delayed, resulting in the generation of a large number of scrapped cores. Summary of the invention

[0004] In view of the above problems, the present invention provides a battery core tab control system and method to improve the reliability, stability and production line efficiency of the battery core tab control system and method.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: In one aspect, the present invention provides a winding core tab control system, comprising: The mobile module is used to drive the thickness measuring laser sensor to move, measure the thickness data of measuring points at different positions of the pole piece, and drive the laser to perform the pole ear cutting action; A calculation module is used to calculate the laser cutting adjustment value and the variable diameter winding needle adjustment value based on the thickness data of the measuring point, and send them to the laser cutting and variable diameter winding needle control mechanism.

[0006] Preferably, the computing module is configured in a host computer, and the laser sensor establishes a communication connection with the host computer.

[0007] Preferably, the mobile module includes a thickness measuring laser sensor mobile module and a laser cutting mobile module. The thickness measuring laser sensor moving module is used to drive the thickness measuring laser sensor to move left and right, measure the thickness data of measuring points at different positions of the pole piece, and transmit the data to the host computer; The laser cutting moving module is used to drive the laser to move up and down to perform the tab cutting action.

[0008] In this preferred solution, the thickness measuring laser sensor moving module drives the laser sensor to move left and right to achieve thickness measurement of the measuring points within the entire pole piece width range, and the laser cutting moving module drives the laser to move up and down to achieve pole ear cutting.

[0009] Preferably, the thickness measuring laser sensor and the thickness measuring laser sensor moving module are provided in two groups, which are respectively located on the upper and lower sides of the pole piece transmitted on the roller; The thickness measuring laser sensor moving module is arranged in parallel with the pole piece, and the moving range covers the entire width of the pole piece; The thickness measuring laser sensor is installed on the thickness measuring laser sensor moving module through a fixed bracket, and the fixed bracket can move left and right along the thickness measuring laser sensor moving module; The distance between the thickness measuring laser sensor and the pole piece satisfies the sensor measurement distance.

[0010] In this preferred solution, the thickness data is measured by thickness measuring laser sensors on the upper and lower sides of the pole piece, and then the thickness of the pole piece is calculated. The thickness measuring laser sensor performs measurement based on laser triangulation method.

[0011] Preferably, the measuring points are set according to the pole piece width, the pole piece flow velocity and the length of a single pole piece.

[0012] In this preferred solution, the pole piece thickness measurement point is adjusted according to the changes in pole piece width, pole piece flow velocity and single pole piece length, making the pole piece thickness measurement more flexible and changeable, which helps to improve efficiency and rhythm and increase measurement flexibility.

[0013] Preferably, the laser cutting moving module is located above the pole piece and parallel to the pole piece; The laser is mounted on the laser cutting movable module via a fixed connection module. The fixed connection module can move up and down along the laser cutting movable module. The laser is used to perform the tab cutting action after moving to a suitable position.

[0014] In this preferred embodiment, the laser cutting moving module drives the laser to move up and down to a suitable position to achieve the ear cutting.

[0015] Preferably, the calculation module is configured with an algorithm model of "pole piece thickness-laser cutting-variable diameter winding needle", The calculation module is specifically used for: Calculate the thickness of the pole piece based on the thickness data of the measuring points; The pole piece thickness is input into the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model to obtain the laser cutting adjustment value and the variable diameter winding needle adjustment value; the laser cutting adjustment value is the laser cutting position, and the variable diameter winding needle adjustment value is the inner diameter of the winding drum.

[0016] In this preferred solution, by establishing a corresponding relationship between the pole piece thickness and the laser cutting position and the inner diameter of the reel, the laser cutting adjustment value and the variable diameter winding needle adjustment value are output according to the pole piece thickness at the measuring point, which can realize real-time adjustment of the pole ear spacing and the pole piece winding, avoiding the post-feedback adjustment of the traditional method, and improving the core winding yield and production line operation efficiency.

[0017] Preferably, the calculation module calculates the thickness of the pole piece based on the thickness data of the measurement point, specifically: Assuming that the distance between the thickness measuring laser sensors located on the upper and lower sides of the pole piece is H, the measured distance from the thickness measuring laser sensor located on the upper side of the pole piece to the pole piece is S1, and the distance from the thickness measuring laser sensor located on the lower side of the pole piece to the pole piece is S2, then the thickness of the pole piece is H-S1-S2.

[0018] In a second aspect, the present invention provides a control method based on the above-mentioned winding core tab control system, comprising: Obtain thickness data of measuring points at different positions of the pole piece based on a thickness measuring laser sensor; The thickness of the pole piece at the measuring point is calculated based on the thickness data of the measuring point; The laser cutting adjustment value and the variable diameter winding needle adjustment value are calculated based on the pole piece thickness and sent to the laser cutting and variable diameter winding needle control mechanism.

[0019] Preferably, the step of calculating the laser cutting adjustment value and the variable diameter winding needle adjustment value based on the pole piece thickness includes: The algorithm model of "pole thickness-laser cutting-variable diameter needle winding" was obtained based on deep learning algorithm training; The pole piece thickness is input into the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model to obtain a laser cutting adjustment value and a variable diameter winding needle adjustment value; the laser cutting adjustment value is the laser cutting position, and the variable diameter winding needle adjustment value is the inner diameter of the winding drum; The data processing process of the "pole thickness-laser cutting-variable diameter winding needle" algorithm model is as follows: Calculate the absolute value of the difference between the pole piece thickness at the measuring point and the pole piece standard thickness; If the absolute value of the thickness difference is less than the set thickness difference standard value, the radius of the variable diameter winding needle is adjusted to: R1=R+(ΔH-H1)*r; Among them, R1 is the radius of the variable diameter winding needle after adjustment, R is the radius of the variable diameter winding needle corresponding to the standard thickness of the pole piece, r is the adjustment amount, H1 is the minimum thickness adjustment threshold one, ΔH is the absolute value of the thickness difference, ΔH=│H0-H│, H0 is the pole piece thickness at the measuring point, and H is the standard thickness of the pole piece; If the absolute value of the thickness difference is greater than or equal to the set thickness difference standard value, the laser-cut tab spacing is adjusted to: S=Sn+(ΔH-H2)*s; Among them, S is the adjusted laser-cut tab spacing, Sn is the corresponding laser-cut tab spacing under standard conditions, s is the adjustment amount, and H2 is the minimum thickness adjustment threshold value 2; The adjustment of the laser cutting lug spacing is converted into the adjustment of the laser cutting position.

[0020] In this preferred embodiment, a two-stage adjustment control method is adopted. When the absolute value of the thickness difference is less than the standard value, the radius of the variable-diameter winding needle is adjusted. When the absolute value of the thickness difference is greater than the standard value, it indicates that the variable-diameter winding needle radius adjustment strategy can no longer adjust the pole ear position to the process standard position. In this case, the laser-cut pole ear spacing is adjusted. Based on this, the accuracy of the adjustment process can be effectively increased.

[0021] Preferably, the minimum thickness adjustment threshold 1 H1, the minimum thickness adjustment threshold 2 H2, the adjustment amount r and the adjustment amount s are obtained through training based on a deep learning algorithm, and the training method is: Based on the winding core tab control system, a data set of pole piece thickness, laser cutting position and winding drum inner diameter is obtained; A deep learning algorithm is used to learn the corresponding relationship between the electrode thickness, laser cutting position and inner diameter of the roll on the acquired data set, and the minimum thickness adjustment threshold H1, the minimum thickness adjustment threshold H2, the adjustment amount r and the adjustment amount s are obtained.

[0022] In this preferred solution, a large amount of experimental data is learned based on deep learning technology to find the corresponding relationship between the pole piece thickness and the laser cutting position and the inner diameter of the drum. The algorithm model based on "pole piece thickness-laser cutting-variable diameter winding needle" is implemented to obtain the laser cutting adjustment value and the variable diameter winding needle adjustment value, thereby realizing real-time adjustment of the pole ear spacing and pole piece winding, avoiding the post-feedback adjustment of the traditional method, and improving the core winding yield and production line operation efficiency.

[0023] Preferably, the laser cutting and variable diameter winding needle control mechanism adopts a winding equipment programmable controller; The host computer sends the calculated laser cutting adjustment value and variable diameter winding needle adjustment value to the winding equipment programmable controller through the Modbus TCP protocol. The winding equipment programmable controller controls the laser cutting and variable diameter winding needle mechanisms to perform logical actions according to the adjustment values ​​based on the received data.

[0024] Preferably, the programmable controller of the winding device reserves a D element register to store the laser cutting position and the inner diameter of the roll.

[0025] Preferably, after the completion of the logic action, the current D element register data is cleared, and the winding equipment programmable controller feeds back the core winding completion result to the host computer, and optimizes the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model based on the feedback result.

[0026] Preferably, the method further comprises: Set the upper and lower limits of the electrode thickness and the threshold of the number of times the electrode thickness exceeds the limit. When the calculated electrode thickness exceeds the upper and lower limits of the electrode thickness, an alarm is issued, and when the number of times the electrode thickness exceeds the limit exceeds the threshold of the number of times the electrode thickness exceeds the limit, an alarm is issued.

[0027] In this preferred solution, an alarm function is added to remind production line equipment personnel to intervene and handle the problem, so that the production line can run more smoothly and the production line operation efficiency can be improved.

[0028] The beneficial effects of the present invention are: The present invention provides a winding core pole lug control system, which adopts a thickness measuring laser sensor to measure the pole piece thickness, and based on the deep learning algorithm technology, trains the laser cutting and variable diameter winding needle adjustment values ​​that should be adjusted to control the pole piece thickness, and obtains the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model, and then based on the measured pole piece thickness data, obtains the laser cutting and variable diameter winding needle adjustment values, which is convenient for timely adjustment of the pole lug position and pole piece winding, can effectively reduce the scrapping of the winding core, and improve the operation efficiency of the production line.

[0029] In the winding core tab control system provided by the present invention, the pole piece thickness measurement point is adjusted according to the changes in the pole piece width, pole piece flow speed and single pole piece length, so that the pole piece thickness measurement is more flexible and changeable, which helps to improve efficiency and rhythm and enhance the flexibility of measurement.

[0030] In the core tab control method provided by the present invention, the upper and lower limit values ​​of the pole piece thickness are set, and an alarm function for the pole piece thickness exceeding the limit is added. When too many alarms are given for the thickness of the same pole piece exceeding the limit, it indicates that the thickness of the current pole piece is seriously abnormal. An alarm function is added to remind the production line equipment personnel to intervene and handle the problem, so that the production line can run more smoothly and the production line operation efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic flow chart of the winding core tab control method provided by the present invention; Figure 2 It is a schematic diagram of the pole piece thickness & laser cutting & variable diameter needle winding algorithm model provided by the present invention; Figure 3 A schematic diagram of the thickness measurement of the pole piece provided by the present invention; Figure 4 This is a schematic diagram of the installation of the thickness measuring laser sensor provided by the present invention; Figure 5 This is a schematic diagram of laser installation provided by the present invention; Figure 6 This is a schematic diagram of the variable diameter winding needle provided by the present invention. DETAILED DESCRIPTION

[0032] In order to make the implementation objectives, technical solutions and advantages of the present invention more clear, the technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the implementation of the present invention.

[0033] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0034] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0035] It should also be noted that, unless otherwise specified, the term “connection” herein may refer not only to a direct connection but also to an indirect connection with an intermediate.

[0036] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0037] It should be emphasized here that the step marks mentioned below are not intended to limit the order of the steps, but it should be understood that the steps can be executed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be executed simultaneously.

[0038] In the process of the electrode passing through the winding equipment to form the core, it is very easy to cause problems such as pole ear misalignment and poor electrode coverage. Defects will cause the core to be scrapped, reduce the core yield rate, increase the time for manual processing of defective cores, waste labor costs and reduce the efficiency of production line operation.

[0039] In order to solve the above-mentioned problems, a first aspect of the present invention provides a winding core tab control system to improve the reliability, stability and production line efficiency of the winding core tab control system.

[0040] like Figure 3-Figure 5 As shown, a winding core tab control system provided by the present invention includes: a moving module, a thickness measuring laser sensor, a laser and a host computer. Specifically, the mobile module includes a thickness measuring laser sensor mobile module 104 and a laser cutting mobile module 106. The thickness measuring laser sensor mobile module 104 is used to drive the thickness measuring laser sensor 102 to move left and right, measure the thickness of different positions of the pole piece, obtain multiple sets of pole piece thickness data, and transmit them to the host computer; The laser cutting moving module 106 is used to drive the laser 107 to move up and down to complete the tab cutting action.

[0041] It should be noted that the measurement frequency is set according to the pole piece flow velocity.

[0042] See also Figure 3 and Figure 4 In the present invention, two groups of thickness measuring laser sensors 102 and thickness measuring laser sensor moving modules 104 are provided, which are respectively located on the upper and lower sides of the pole piece 101 transmitted on the roller 103; the distance between the thickness measuring laser sensor 102 and the pole piece can meet the sensor measurement distance.

[0043] The two sets of thickness measuring laser sensors 102 are both mounted on the thickness measuring laser sensor moving module 104 through the fixed bracket 105. The fixed bracket 105 can move left and right along the thickness measuring laser sensor moving module 104, thereby driving the thickness measuring laser sensor 102 to move left and right. The thickness measuring laser sensor 102 is used to measure the thickness of the measuring points at different positions of the pole piece within the moving range, and transmit the thickness data to the host computer.

[0044] It should be noted that the thickness measuring laser sensor moving module 104 is arranged parallel to the pole piece, and the moving range covers the entire width of the pole piece. The upper and lower thickness measuring laser sensors move and measure simultaneously to achieve thickness measurement of different measuring points within the entire width of the pole piece.

[0045] In the present invention, the working principle of the thickness measuring laser sensor is the laser triangulation method. A visible red laser is directed to the surface of the object to be measured through a lens. The laser reflected by the object passes through a receiver lens and is received by an internal CCD linear camera. According to different distances, the CCD linear camera can capture this light spot at different angles. According to this angle and the known distance between the laser and the camera, the digital signal processor can calculate the distance between the sensor and the object to be measured, and then calculate the thickness of the pole piece.

[0046] The pole piece thickness is calculated as follows: the distance between the upper sensor and the lower sensor is H, the distance from the upper sensor to the pole piece is measured to be S1, and the distance from the lower sensor to the pole piece is S2, so the pole piece thickness is H-S1-S2.

[0047] Furthermore, in the present invention, the pole piece thickness measurement point is adjusted according to the changes in the pole piece width, the pole piece flow velocity and the length of a single pole piece, so that the pole piece thickness measurement is more flexible and changeable, which helps to improve efficiency and rhythm and enhance the flexibility of measurement.

[0048] See also Figure 5 In the present invention, the laser cutting movable module 106 is located above the pole piece and parallel to the pole piece. The laser 107 is installed on the laser cutting movable module 106 through the fixed connection module 108. The fixed connection module 108 can move up and down along the laser cutting movable module 106, thereby driving the laser 107 to move up and down. The laser 107 is used to move to a suitable position to perform the pole ear cutting action.

[0049] In the present invention, a computing module is configured in the host computer. The calculation module is used to obtain the laser cutting adjustment value and the variable diameter winding needle adjustment value based on the pole piece thickness, and send them to the winding equipment programmable controller. The winding equipment programmable controller controls the laser cutting and variable diameter winding needle to complete the corresponding mechanism action according to the laser cutting adjustment value and the variable diameter winding needle adjustment value.

[0050] See also Figure 2 In the present invention, the calculation module adopts the "pole thickness-laser cutting-variable diameter winding needle" algorithm model to calculate according to the measured pole thickness to obtain the laser cutting adjustment value and the variable diameter winding needle adjustment value. Among them, the laser cutting adjustment value is the laser cutting position; the variable diameter winding needle adjustment value is the inner diameter of the winding drum.

[0051] Furthermore, the “pole piece thickness-laser cutting-variable diameter winding needle” algorithm model was trained based on the deep learning algorithm to obtain the corresponding relationship between the pole piece thickness and the laser cutting position and the inner diameter of the winding drum.

[0052] Based on the above winding core tab control system, the present invention provides a winding core tab control method on the other hand, which uses the above winding core tab control system to control the winding core tab, see Figure 1 The specific process of this method is as follows: S1. The lithium battery pole piece is conveyed by rollers, and the thickness measuring laser sensor mobile module 104 drives the thickness measuring laser sensor 102 to move to the measuring point of the pole piece. The pole piece passes through the thickness measuring laser sensor 102, triggering the thickness measuring laser sensor 102 to start measuring, and uploading the measurement data to the host computer; the host computer calculates the thickness of the pole piece based on the measurement data; S2. Input the pole piece thickness data into the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model to obtain the laser cutting adjustment value and the variable diameter winding needle adjustment value, wherein the laser cutting adjustment value includes the laser cutting position value L, and the variable diameter winding needle adjustment value includes the roll inner diameter R; perform data protection analysis on the laser cutting position value L and the roll inner diameter R; S3, sending the parsed value to the winding equipment programmable controller via Modbus TCP protocol; The reserved component register of the winding equipment programmable controller is used to store the laser cutting position value L and the inner diameter R of the roll; S4. After receiving the data, the programmable controller of the winding equipment controls the laser cutting and the variable diameter winding needle mechanism to perform logical actions according to the adjustment value, such as: the laser completes the ear cutting action of a single pole piece, the variable diameter winding needle adjusts the inner diameter of the reel, and the core is wound according to different winding speeds and reel tensions, etc. S5. After the action is completed, the current D component register data is cleared, that is, a set of actions is completed to clear the value stored in the current D component address; the winding equipment programmable controller feeds back the core winding completion result to the host computer, and continuously optimizes the "pole thickness-laser cutting-variable diameter winding needle" algorithm model based on the feedback result; the above process is repeated until the winding equipment completes all the cores.

[0053] In the present invention, the “pole thickness-laser cutting-variable diameter winding needle” algorithm model calculates the laser cutting adjustment value and the variable diameter winding needle adjustment value, as follows: Set the standard thickness of the pole piece process to H, the radius of the standard thickness corresponding to the diameter winding needle is R, the corresponding laser-cut pole ear spacing parameters are S1, S2, S3...S29 (according to the 30 pole ears of the pole piece), the corresponding thickness difference standard value is Hp, the actual measured pole piece thickness is H0, and the absolute value of the thickness difference at the pole piece measurement point is ΔH=│H0-H│, The algorithm model of "pole piece thickness-laser cutting-variable diameter winding needle" is divided into two stages. The first stage is the "pole piece thickness-variable diameter winding needle" control, and the second stage is the "pole piece thickness-laser cutting" control. The algorithm model of the present invention is adjusted according to the first stage control first, and then adjusted according to the second stage control. When ΔH<Hp, adjust according to the first stage control scheme, assuming that the minimum thickness adjustment threshold is H1, and the adjustment amount is r, then the radius of the variable diameter winding needle after adjustment is: R1=R+(ΔH-H1)*r; When ΔH≥Hp, it indicates that the pole lug position can no longer be adjusted to the process standard position by controlling the radius adjustment strategy of the variable diameter winding needle according to the first stage "pole piece thickness-variable diameter winding needle", and the second stage "pole piece thickness-laser cutting" control scheme is required for adjustment. Assuming the second minimum thickness adjustment threshold value is H2, the adjustment amount is s, the adjusted laser cutting pole lug spacing is: S=Sn+(ΔH-H2)*s, where Sn is the value of S1, S2, S3...S29; it should be noted that the pole lug spacing is achieved by adjusting the laser cutting position L.

[0054] Each measuring point is adjusted using the first or second stage control scheme according to the pole piece thickness measurement.

[0055] It should be noted that in the above-mentioned "pole thickness-laser cutting-variable diameter winding needle" algorithm model, the method of obtaining the parameters of the minimum thickness adjustment threshold 1 H1, the minimum thickness adjustment threshold 2 H2, the adjustment amount r and the adjustment amount s is as follows: Based on the winding core tab control system, the pole piece thickness, laser cutting position and winding drum inner diameter data sets are obtained; A deep learning algorithm is used to learn the corresponding relationship between the electrode thickness, laser cutting position and inner diameter of the roll on the acquired data set, and the minimum thickness adjustment threshold H1, the minimum thickness adjustment threshold H2, the adjustment amount r and the adjustment amount s are obtained.

[0056] Variable diameter needle Figure 6 As shown, the radius of the variable diameter winding needle is changed by extending and retracting the variable diameter adjusting member 109; the change in radius causes the outer winding needle housing 110 to change, thereby controlling the winding process of the winding core.

[0057] It should be noted that the pole piece measurement point in the present invention can be adjusted according to the changes in the pole piece width, pole piece flow velocity and single pole piece length. After the measurement point is adjusted, the thickness measuring laser sensor mobile module 104 drives the thickness measuring laser sensor 102 to the designated position to measure the pole piece thickness.

[0058] It should be noted that in the present invention, the numerical value is sent to the winding device programmable controller through the Modbus TCP protocol after parsing, but the data transmission is not limited to this protocol.

[0059] It should be noted that the present invention uses D element registers to store data, but is not limited to this. It can also be an array, a custom string or other forms to store the laser cutting adjustment value and the variable diameter winding needle adjustment value data sent by the host computer.

[0060] Furthermore, the present invention sets upper and lower limit values ​​for the thickness of the electrode, and adds an alarm function for the thickness exceeding the limit. When there are too many alarms for the thickness exceeding the limit for the same roll of electrode, it means that the thickness of the current roll of electrode is seriously abnormal. An alarm function is added to remind the production line equipment personnel to intervene and handle the problem, so that the production line can run more smoothly and the production line operation efficiency can be improved.

[0061] Furthermore, the alarm output signal controls the alarm light to buzz for warning, but is not limited to the alarm light buzzing warning mode, and the alarm light may also flash red, stay on, or combine red light and buzzing to warn.

[0062] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A winding core tab control system, characterized in that: include: The mobile module is used to drive the thickness measuring laser sensor to move, measure the thickness data of measuring points at different positions of the pole piece, and drive the laser to perform the pole ear cutting action; A calculation module is used to calculate the laser cutting adjustment value and the variable diameter winding needle adjustment value based on the thickness data of the measuring point, and send them to the laser cutting and variable diameter winding needle control mechanism.

2. A winding core tab control system according to claim 1, characterized in that: The calculation module is configured in a host computer, and the laser sensor establishes a communication connection with the host computer.

3. A winding core tab control system according to claim 2, characterized in that: The mobile module includes a thickness measuring laser sensor mobile module and a laser cutting mobile module. The thickness measuring laser sensor moving module is used to drive the thickness measuring laser sensor to move left and right, measure the thickness data of measuring points at different positions of the pole piece, and transmit the data to the host computer; The laser cutting moving module is used to drive the laser to move up and down to perform the tab cutting action.

4. A winding core tab control system according to claim 3, characterized in that: The thickness measuring laser sensor and the thickness measuring laser sensor moving module are provided in two groups, which are respectively located at the upper and lower sides of the pole piece transmitted on the roller; The thickness measuring laser sensor moving module is arranged in parallel with the pole piece, and the moving range covers the entire width of the pole piece; The thickness measuring laser sensor is installed on the thickness measuring laser sensor moving module through a fixed bracket, and the fixed bracket can move left and right along the thickness measuring laser sensor moving module; The distance between the thickness measuring laser sensor and the pole piece satisfies the sensor measurement distance.

5. A winding core tab control system according to claim 3, characterized in that: The measuring points are set according to the pole piece width, the pole piece flow velocity and the length of a single pole piece.

6. A winding core tab control system according to claim 3, characterized in that: The laser cutting moving module is located above the pole piece and parallel to the pole piece; The laser is mounted on the laser cutting movable module via a fixed connection module. The fixed connection module can move up and down along the laser cutting movable module. The laser is used to perform the tab cutting action after moving to a suitable position.

7. A winding core tab control system according to claim 3, characterized in that: The calculation module is configured with the "pole thickness-laser cutting-variable diameter winding needle" algorithm model. The calculation module is specifically used for: Calculate the thickness of the pole piece based on the thickness data of the measuring points; The pole piece thickness is input into the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model to obtain the laser cutting adjustment value and the variable diameter winding needle adjustment value; the laser cutting adjustment value is the laser cutting position, and the variable diameter winding needle adjustment value is the inner diameter of the winding drum.

8. A winding core tab control system according to claim 7, characterized in that: The calculation module calculates the thickness of the pole piece based on the thickness data of the measurement point, specifically: Assuming that the distance between the thickness measuring laser sensors located on the upper and lower sides of the pole piece is H, the measured distance from the thickness measuring laser sensor located on the upper side of the pole piece to the pole piece is S1, and the distance from the thickness measuring laser sensor located on the lower side of the pole piece to the pole piece is S2, then the thickness of the pole piece is H-S1-S2.

9. The control method of the winding core tab control system according to any one of claims 1 to 8, characterized in that: include: Obtain thickness data of measuring points at different positions of the pole piece based on a thickness measuring laser sensor; The thickness of the pole piece at the measuring point is calculated based on the thickness data of the measuring point; The laser cutting adjustment value and the variable diameter winding needle adjustment value are calculated based on the pole piece thickness and sent to the laser cutting and variable diameter winding needle control mechanism.

10. The control method of the winding core tab control system according to claim 9, characterized in that: The step of calculating the laser cutting adjustment value and the variable diameter winding needle adjustment value based on the pole piece thickness includes: The "pole thickness-laser cutting-variable diameter needle winding" algorithm model was obtained based on deep learning algorithm training; The pole piece thickness is input into the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model to obtain the laser cutting adjustment value and the variable diameter winding needle adjustment value; the laser cutting adjustment value is the laser cutting position, and the variable diameter winding needle adjustment value is the inner diameter of the winding drum; The data processing process of the "pole thickness-laser cutting-variable diameter winding needle" algorithm model is as follows: Calculate the absolute value of the difference between the pole piece thickness at the measuring point and the pole piece standard thickness; If the absolute value of the thickness difference is less than the set thickness difference standard value, the radius of the variable diameter winding needle is adjusted to: R1=R+(ΔH-H1)*r; Among them, R1 is the radius of the variable diameter winding needle after adjustment, R is the radius of the variable diameter winding needle corresponding to the standard thickness of the pole piece, r is the adjustment amount, H1 is the minimum thickness adjustment threshold one, ΔH is the absolute value of the thickness difference, ΔH=│H0-H│, H0 is the pole piece thickness at the measuring point, and H is the standard thickness of the pole piece; If the absolute value of the thickness difference is greater than or equal to the set thickness difference standard value, the laser-cut tab spacing is adjusted to: S=Sn+(ΔH-H2)*s; Among them, S is the adjusted laser-cut tab spacing, Sn is the corresponding laser-cut tab spacing under standard conditions, s is the adjustment amount, and H2 is the minimum thickness adjustment threshold value 2; The adjustment of the laser cutting lug spacing is converted into the adjustment of the laser cutting position.

11. The control method of the winding core tab control system according to claim 10, characterized in that: The minimum thickness adjustment threshold 1 H1, the minimum thickness adjustment threshold 2 H2, the adjustment amount r and the adjustment amount s are obtained through training based on a deep learning algorithm, and the training method is: Based on the winding core tab control system, a data set of pole piece thickness, laser cutting position and winding drum inner diameter is obtained; A deep learning algorithm is used to learn the corresponding relationship between the electrode thickness, laser cutting position and inner diameter of the roll on the acquired data set, and the minimum thickness adjustment threshold H1, the minimum thickness adjustment threshold H2, the adjustment amount r and the adjustment amount s are obtained.

12. The control method of the winding core tab control system according to claim 10, characterized in that: The laser cutting and diameter-changing needle winding control mechanism adopts a winding equipment programmable controller; The host computer sends the calculated laser cutting adjustment value and variable diameter winding needle adjustment value to the winding equipment programmable controller through the Modbus TCP protocol. The winding equipment programmable controller controls the laser cutting and variable diameter winding needle mechanisms to perform logical actions according to the adjustment values ​​based on the received data.

13. The control method of the winding core tab control system according to claim 12, characterized in that: The programmable controller of the winding device reserves a D element register to store the laser cutting position and the inner diameter of the roll.

14. The control method of the winding core tab control system according to claim 13, characterized in that: After the completion of the logic action, the current D element register data is cleared, and the winding equipment programmable controller feeds back the core winding completion result to the host computer, and optimizes the "pole piece thickness-laser cutting-variable diameter winding needle" algorithm model based on the feedback result.

15. The control method of the winding core tab control system according to claim 12, characterized in that: The method further comprises: Set the upper and lower limits of the electrode thickness and the threshold of the number of times the electrode thickness exceeds the limit. When the calculated electrode thickness exceeds the upper and lower limits of the electrode thickness, an alarm is issued, and when the number of times the electrode thickness exceeds the limit exceeds the threshold of the number of times the electrode thickness exceeds the limit, an alarm is issued.

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