Roll cutting equipment adjusting method, device and system based on pole piece thickness detection and storage medium

Abstract

The invention discloses a roll cutting equipment adjusting method, device and system based on pole piece thickness detection and a storage medium, the method is applied to roll cutting equipment, and the method comprises the following steps: obtaining preprocessed pole piece thickness data at an unwinding position; binding the preprocessed pole piece thickness data with the corresponding roll core, and sending the obtained pole piece thickness data bound with the roll core to upper computer equipment; and adjusting parameters of the roll cutting equipment in response to dislocation quantity data of each layer of tabs of the roll core calculated by the upper computer equipment according to the thickness data of the pole pieces bound with the roll core. According to the invention, the accuracy and real-time performance of the pole piece thickness data in the battery cell manufacturing process can be ensured, the guiding effect on battery cell manufacturing by collecting the pole piece thickness data is realized, and the production qualification rate of the battery cell can be improved.

Description

Technical Field

[0001] This invention belongs to the field of electrode production technology, specifically relating to a method, device, system, and storage medium for adjusting a slitting and rolling equipment based on electrode thickness detection. Background Technology

[0002] In the lithium battery manufacturing process, inconsistent electrode thickness can increase the resistance at the interface between the electrode material and the electrolyte, thereby reducing the cell capacity and affecting battery performance. Electrode thickness also affects the setting of process parameters during winding, such as the diameter of the variable diameter winding needle, the pressure of the embossing roller, and the setting of laser die-cutting parameters. Therefore, the authenticity, accuracy, and real-time nature of electrode thickness data are particularly important, and the accuracy and real-time nature of data processing are key to ensuring high-quality cell manufacturing.

[0003] Currently, in the battery cell manufacturing process, on the one hand, there are no measures to monitor the electrode thickness data in real time during the battery cell manufacturing process. The electrode thickness is only measured in the rolling and slitting process before winding. However, the electrode thickness measured in the rolling and slitting process cannot reflect the true thickness of the electrode in real time during the battery cell production process due to factors such as the need for the electrode to stand still. On the other hand, the real-time measurement data of the electrode thickness has not been systematically processed, so it cannot directly play a guiding role in the battery cell manufacturing process. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method, device, system and storage medium for adjusting a slitting and rolling equipment based on electrode thickness detection. This ensures the accuracy and real-time nature of electrode thickness data during the cell manufacturing process, and enables the collection of electrode thickness data to guide cell manufacturing, thereby helping to improve the cell production qualification rate.

[0005] This invention provides the following technical solution:

[0006] Firstly, a method for adjusting a slitting and rolling equipment based on electrode thickness detection is provided, applicable to the slitting and rolling equipment, including:

[0007] Obtain the pre-processed electrode thickness data at the unwinding point;

[0008] The preprocessed electrode thickness data is bound to the corresponding core, and the obtained electrode thickness data of the bound core is sent to the host computer device.

[0009] In response to the data on the misalignment of each layer of the core's tabs, calculated by the host computer based on the thickness data of the bound core's tabs, the parameters of the cutting and winding equipment are adjusted.

[0010] In the above technical solution, the parameters of the slitting and rolling equipment can be adjusted by collecting electrode thickness data, which can play a guiding role in cell manufacturing and help improve the cell production qualification rate.

[0011] Furthermore, the electrode thickness data is collected periodically by a data acquisition device after the unwinding of the slitting and rolling equipment.

[0012] In the above technical solution, collecting electrode thickness data after unwinding the coiling equipment can ensure the accuracy and real-time nature of electrode thickness data during the cell manufacturing process.

[0013] Furthermore, the preprocessing method for the electrode thickness data includes: the acquisition device fuses the electrode thickness data into a single output data at fixed intervals;

[0014] Wherein, the fixed distance D==L / (C*n), where L is the core length, C is the number of core layers, and n is the number of electrode thickness values ​​collected for each core layer;

[0015] The fusion method includes a method for removing outliers and taking an average.

[0016] In the above technical solution, the acquisition device can remove outliers in the electrode thickness data through preprocessing, which helps to improve the accuracy of subsequent calculations and facilitates the transmission of data to the slitting device.

[0017] Furthermore, the method for the host computer device to calculate the electrode misalignment data of each layer of the core includes: the host computer device uses a random forest model under a machine learning model to process the electrode thickness data of the bound core to obtain the electrode misalignment data of each layer of the core.

[0018] In the above technical solution, the random forest model under the machine learning model is used to calculate the misalignment data of each layer of the core, which has high accuracy, high calculation efficiency and is convenient and fast.

[0019] Furthermore, the parameters of the cutting and rolling equipment include the radius of the winding needle and the pressure value of the embossing roller;

[0020] The adjustment of the coiling needle radius is based on the following formula:

[0021] r = S / 100π;

[0022] In the formula, r is the radius of the coil needle, and S is the amount of electrode misalignment;

[0023] The pressure value of the embossing roller is adjusted according to the following formula:

[0024] F1 = F + (SK) * F;

[0025] In the formula, F1 is the current pressure value of the embossing roller, F is the pressure adjustment amount of the embossing roller, and K is the minimum threshold of the tab misalignment amount.

[0026] In the above technical solution, the winding equipment adjusts the winding needle radius and embossing roller pressure value according to the data on the misalignment of the tabs in each layer of the core, which helps to improve the pass rate of the battery cell production.

[0027] Furthermore, the data transmission between the acquisition device, the roll cutting device, and the host computer device is via CIP communication, and data interaction is performed through a custom array.

[0028] In the above technical solution, data writing and reading between the acquisition device and the cutting device, and between the cutting device and the host computer device, can be realized through CIP communication and custom array method.

[0029] Furthermore, the method also includes: when the number of abnormal data write and read operations exceeds a set value, controlling the alarm device to sound a buzzer alarm.

[0030] In the above technical solution, setting up alarm devices helps to promptly detect the number of abnormal data writes and reads within a specified time, and reminds production line personnel to handle the abnormalities.

[0031] Secondly, a slitting and rolling equipment adjustment device based on electrode thickness detection is provided, comprising:

[0032] The data acquisition module is used to acquire the pre-processed electrode thickness data at the unwinding point;

[0033] Data binding module; used to bind the preprocessed electrode thickness data with the corresponding core, and send the obtained electrode thickness data of the bound core to the host computer device;

[0034] The parameter adjustment module is used to adjust the parameters of the cutting and rolling equipment in response to the data on the misalignment of each layer of the core's tabs, calculated by the host computer based on the thickness data of the electrode sheets of the bound core.

[0035] In the above technical solution, the device and the method described in the first aspect are based on the same inventive concept. By collecting electrode thickness data, the parameters of the slitting and rolling equipment can be adjusted, which can play a guiding role in the manufacturing of battery cells and help improve the qualification rate of battery cell production.

[0036] Thirdly, a computer system is provided, comprising:

[0037] Memory, used to store computer programs;

[0038] A processor for executing the computer program to implement the steps of the method described in any of the first aspects.

[0039] Fourthly, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps of the method described in any one of the first aspects.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] (1) The present invention collects electrode thickness data at the unwinding point of the slitting and winding equipment, which can ensure the accuracy and real-time performance of electrode thickness data during the cell manufacturing process;

[0042] (2) This invention binds the pre-processed electrode thickness data with the corresponding core and sends the obtained electrode thickness data of the bound core to the host computer. In response to the host computer, the parameters of the cutting and rolling equipment are adjusted based on the electrode thickness data of the bound core. This invention enables the collection of electrode thickness data to play a guiding role in the manufacturing of battery cells, which helps to improve the pass rate of battery cell production. The method is simple, requires little modification to the original equipment, and is suitable for widespread application. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the adjustment method of the slitting and rolling equipment based on electrode thickness detection in an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the acquisition device collecting electrode thickness data in an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of collecting electrode thickness values ​​H1, H2, and H3 at the front, middle, and rear of each core layer in an embodiment of the present invention.

[0046] Figure 4 This is a schematic diagram of the transmission rules for arrays A1{1} and A2{1} in an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram of the transmission rules for arrays B1{1} and B2{1} in an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the transmission rules for arrays C1{1} and C2{1} in an embodiment of the present invention;

[0049] The markings in the diagram are: 101, electrode; 102, laser displacement sensor; 103, roller. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0051] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0052] Example 1

[0053] like Figure 1 As shown, this embodiment provides an adjustment method for a slitting and rolling equipment based on electrode thickness detection, which is applied to the slitting and rolling equipment. The steps are as follows:

[0054] Step 1: Obtain the pre-processed electrode thickness data at the unwinding point.

[0055] like Figure 2 As shown, electrode sheet 101 is output from the unwinding device and conveyed by roller 103. The thickness data of the electrode sheet is collected frequently by laser displacement sensor 102 in the acquisition device after the unwinding of the cutting and winding device. The acquisition frequency can be set in the software interface, such as once every 0.3mm, 0.6mm or 0.9mm, but is not limited to these three frequencies.

[0056] The preprocessing method for electrode thickness data includes: the acquisition device fuses the electrode thickness data into a single output data at fixed intervals.

[0057] The fixed distance D is calculated based on the core length and the number of core layers, and the specific calculation formula is as follows:

[0058] D==L / (C*n;

[0059] In the formula, L is the core length, C is the number of core layers, and n is the number of electrode thickness values ​​collected for each core layer.

[0060] like Figure 3 As shown, when one electrode thickness value H1, H2, and H3 are collected at the front, middle, and rear of each core layer, n=3, then D==L / (C*3). The value of n is not limited to 3 and can be multiple, depending on the length of each electrode layer of the core.

[0061] The fusion method includes outlier removal and averaging. If the sampling frequency is once every 0.3 mm, then L / 0.3 data points need to be fused. The acquisition device sends the fused electrode thickness data to the slitting device.

[0062] Step 2: Bind the preprocessed electrode thickness data to the corresponding core, and send the obtained electrode thickness data of the bound core to the host computer.

[0063] Specifically, the cutting and rolling equipment splits the pre-processed electrode thickness data and binds it with the corresponding core, and then sends the electrode thickness data of the bound core to the host computer.

[0064] Step 3: In response to the data on the misalignment of each layer of the core's tabs, calculated by the host computer based on the thickness data of the bound core's electrode sheets, the parameters of the cutting and winding equipment are adjusted.

[0065] The host computer uses a machine learning model to process the electrode thickness data of the bound core, obtaining the electrode misalignment data for each layer of the core. This data is then sent to the slitting device, which adjusts relevant parameters based on this data. Specifically, the calculation of the electrode misalignment data for each layer of the core uses a random forest model within the machine learning framework, but it is not limited to this method.

[0066] The parameters of the cutting and rolling equipment include the radius of the winding needle and the pressure value of the embossing roller;

[0067] The adjustment of the coiling needle radius is based on the following formula:

[0068] r = S / 100π;

[0069] In the formula, r is the radius of the coil needle, and S is the amount of electrode misalignment;

[0070] The pressure value of the embossing roller is adjusted according to the following formula:

[0071] F1 = F + (SK) * F;

[0072] In the formula, F1 is the current pressure value of the embossing roller, F is the pressure adjustment amount of the embossing roller, and K is the minimum threshold of the tab misalignment amount.

[0073] In steps 1 to 3, the communication method for transmitting data between the acquisition device, the slicing device, and the host computer device is CIP communication, but it is not limited to this protocol. Data interaction is performed through a custom array, but data interaction is not limited to the array method. It can also be performed through internal registers, custom strings, or other forms.

[0074] Example 2

[0075] This embodiment uses the method described in Embodiment 1, and adjusts the slitting and rolling equipment based on electrode thickness detection. The specific steps are as follows:

[0076] The acquisition device collects electrode thickness data from the operating electrode at a frequency of once every 0.3 mm using a laser displacement sensor. The acquisition device then fuses the collected electrode thickness data by removing outliers and averaging the data from L / 0.3 electrode thickness data points.

[0077] like Figure 4 As shown, the acquisition device sends the fused data one by one to the array addresses A1{1,2} and A2{1,2} of the slitting device via CIP communication. The array is defined as follows: A1{1} and A2{1} are flag bits indicating that the acquisition device writes and the slitting device reads. That is, after the acquisition device writes the positive and negative electrode thickness data for the first time, it sets A1{1} and A2{1} to 1. When the slitting device reads the data, it sets A1{1} and A2{1} to 0. When the acquisition device detects that A1{1} and A2{1} are 0, it writes the next set of electrode thickness data, and so on. A1{2} and A2{2} are the electrode thickness data being transmitted.

[0078] The slitting and winding equipment binds the received electrode thickness data with the corresponding core and sends it to the host computer, such as... Figure 5 As shown, the array addresses B1{1...200} and B2{1...200} are sent to the host computer via CIP communication. The array definition rule is that B1{1} and B2{1} are flags indicating write operations by the slitting device and read operations by the host computer. Specifically, after the slitting device first writes the thickness data of the corresponding positive and negative electrode sheets of the roll core, it sets B1{1} and B2{1} to 1. When the host computer reads the data, B1{1} and B2{1} are set to 1. When 2{1} is set to 0, the subsequent winding equipment will write the thickness data of the positive and negative electrode sheets corresponding to the next set of cores when it detects that B1{1} and B2{1} are 0. This process will continue in a loop. B1{2} and B2{2} are the current core number, B1{3} and B2{3} are the current core production needle number, and B1{4...200} and B2{4...200} are the thickness data of the positive and negative electrode sheets corresponding to the current core. The amount of positive and negative electrode sheet data is defined according to the core length.

[0079] The host computer uses an algorithm to calculate the misalignment of the tabs in each layer of the roll core based on the corresponding thickness data and sends the calculation to the cutting equipment. Figure 6 As shown, data is sent to the positive and negative terminals C1{1...100} and C2{1...100} of the roll cutting device via CIP communication. The array is defined as follows: C1{1} and C2{1} are flags indicating write operations by the host computer and read operations by the roll cutting device. After the host computer writes data for the first time, it sets C1{1} and C2{1} to 1. When the roll cutting device reads the data, it sets C1{1} and C2{1} to 0. Subsequently, when the host computer detects that C1{1} and C2{1} are 0, it writes the tab misalignment amount for each layer of the roll core for the next set of cores. This process continues in a loop. C1{2...100} and B2{2...100} represent the tab misalignment amount data for each layer of the current roll core.

[0080] The cutting and rolling equipment is adjusted based on the data of the misalignment of the tabs in each layer of the core. The adjustment includes adjusting the radius of the winding needle and the pressure value of the embossing roller.

[0081] This embodiment includes an alarm function. The alarm count includes the number of abnormal data writes and reads within a specified time. When the number of abnormal data writes and reads exceeds a set value, the programmable controller outputs a signal to control the alarm light to sound, reminding production line personnel to handle the abnormality. After handling, the equipment personnel can click the alarm reset button to reset the alarm. The alarm can also be triggered by the alarm light flashing red, remaining constantly lit, or a combination of red light and buzzer.

[0082] Example 3

[0083] Based on the same inventive concept as Embodiment 1, this embodiment provides an adjustment device for a slitting and rolling equipment based on electrode thickness detection, comprising:

[0084] The data acquisition module is used to acquire the pre-processed electrode thickness data at the unwinding point;

[0085] Data binding module; used to bind the preprocessed electrode thickness data with the corresponding core, and send the obtained electrode thickness data of the bound core to the host computer device;

[0086] The parameter adjustment module is used to adjust the parameters of the cutting and rolling equipment in response to the data on the misalignment of each layer of the core's tabs, calculated by the host computer based on the thickness data of the electrode sheets of the bound core.

[0087] The specific functions of each module described above are explained in the relevant content of the method in Embodiment 1, and will not be repeated here.

[0088] Example 4

[0089] Based on the same inventive concept as Embodiment 1, this embodiment provides a computer system, including:

[0090] Memory, used to store computer programs;

[0091] A processor is used to execute the computer program to implement the steps of the method described in Embodiment 1 or Embodiment 2.

[0092] Example 5

[0093] Based on the same inventive concept as Embodiment 1, this embodiment provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in Embodiment 1 or Embodiment 2.

[0094] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0095] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0096] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0097] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0098] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for adjusting a slitting and rolling equipment based on electrode thickness detection, characterized in that, Applications in slitting and rolling equipment include: Obtain the pre-processed electrode thickness data at the unwinding point; The preprocessed electrode thickness data is bound to the corresponding core, and the obtained electrode thickness data of the bound core is sent to the host computer device. In response to the data on the misalignment of each layer of the core's tabs, calculated by the host computer based on the thickness data of the bound core's tabs, the parameters of the cutting and winding equipment are adjusted.

2. The method for adjusting a slitting and rolling equipment based on electrode thickness detection according to claim 1, characterized in that, The electrode thickness data is collected periodically by a data acquisition device after the unwinding of the slitting and rolling equipment.

3. The method for adjusting a slitting and rolling equipment based on electrode thickness detection according to claim 1, characterized in that, The preprocessing method for the electrode thickness data includes: the acquisition device fuses the electrode thickness data into a single output data at fixed intervals; Wherein, the fixed distance D==L / (C*n), where L is the core length, C is the number of core layers, and n is the number of electrode thickness values ​​collected for each core layer; The fusion method includes a method for removing outliers and taking an average.

4. The method for adjusting a slitting and rolling equipment based on electrode thickness detection according to claim 1, characterized in that, The method for the host computer device to calculate the electrode misalignment data of each layer of the core includes: the host computer device uses a random forest model under the machine learning model to process the electrode thickness data of the bound core to obtain the electrode misalignment data of each layer of the core.

5. The method for adjusting a slitting and rolling equipment based on electrode thickness detection according to claim 1, characterized in that, The parameters of the cutting and rolling equipment include the radius of the winding needle and the pressure value of the embossing roller; The adjustment of the coiling needle radius is based on the following formula: r=S / 100π； In the formula, r is the radius of the coil needle, and S is the amount of electrode misalignment; The pressure value of the embossing roller is adjusted according to the following formula: F1 = F + (SK) * F; In the formula, F1 is the current pressure value of the embossing roller, F is the pressure adjustment amount of the embossing roller, and K is the minimum threshold of the tab misalignment amount.

6. The method for adjusting a slitting and rolling equipment based on electrode thickness detection according to claim 2, characterized in that, The data transmission between the acquisition device, the roll cutting device, and the host computer device is CIP communication, and data interaction is performed through a custom array.

7. The method for adjusting a slitting and rolling equipment based on electrode thickness detection according to claim 6, characterized in that, The method further includes: when the number of abnormal data write and read operations exceeds a set value, controlling the alarm device to sound a buzzer alarm.

8. A slitting and rolling equipment adjustment device based on electrode thickness detection, characterized in that, include: The data acquisition module is used to acquire the pre-processed electrode thickness data at the unwinding point; Data binding module; Used to bind the pre-processed electrode thickness data with the corresponding core, and send the obtained electrode thickness data of the bound core to the host computer device; The parameter adjustment module is used to adjust the parameters of the cutting and rolling equipment in response to the data on the misalignment of each layer of the core's tabs, calculated by the host computer based on the thickness data of the electrode sheets of the bound core.

9. A computer system, characterized in that, include: Memory, used to store computer programs; A processor for executing the computer program to implement the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the method according to any one of claims 1 to 7.

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