Control method and device of glue winding equipment, electronic equipment and storage medium

Abstract

The invention discloses a control method and device for glue winding equipment, electronic equipment and a storage medium, and the method comprises the steps: collecting a plurality of pressure values applied to a battery cell by the glue winding equipment in M time periods in the production process of the battery cell, each time period comprising N pressure values; for each time period, executing the following processing: determining a target pressure boundary value applied to the battery cell by the glue winding equipment according to the N pressure values in the time period, wherein the boundary value comprises an upper boundary value and a lower boundary value; determining a representation value corresponding to the time period according to the N pressure values in the time period; if the characterization value is not located in the interval range formed by the upper boundary value and the lower boundary value, a compensation value corresponding to the time period is obtained through calculation according to the target pressure value; the compensation value corresponding to the time period is adopted to adjust the pressure applied to the battery cell by the glue winding equipment, and whether the pressure is within the interval range or not is judged according to the actual production data, so that the pressure of the glue winding equipment is adjusted, and the production quality of the battery cell can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of equipment control, and in particular, relates to a control method, device, electronic equipment and storage medium for glue winding equipment. Background Art

[0002] During the entire production process of the battery, the battery needs to be glued, such as gluing the corners of the battery poles to reduce the probability of short circuits caused by contact between adjacent poles, or gluing the battery surface to protect the battery surface. In the above process, glue winding equipment is needed to perform glue bonding on the battery.

[0003] However, if the pressure of the glue winding mechanism is too high, the corners of the battery electrodes will be damaged. If the pressure is too low, the gap between the positive and negative electrodes will be too large, resulting in a decrease in battery performance. Summary of the invention

[0004] The embodiments of the present application provide a control method, device, electronic device and storage medium for a winding device, which can determine whether it is within a range according to actual production data, thereby adjusting the pressure of the winding device, thereby improving the production quality of the battery cell.

[0005] In a first aspect, the adhesive winding device is used to perform hot pressing, shaping and adhesive winding on a battery cell. An embodiment of the present application provides a control method for the adhesive winding device, the method comprising:

[0006] In the process of producing battery cells, multiple pressure values ​​applied to the battery cells by the winding equipment in M ​​time periods are collected, each of the time periods includes N pressure values, N is an integer greater than 1, and M is an integer greater than 1;

[0007] For each of the time periods, the following processing is performed:

[0008] Determine, according to the N pressure values ​​in the time period, a target pressure boundary value applied by the winding device to the battery core, wherein the target pressure boundary value includes an upper boundary value and a lower boundary value;

[0009] Determine a characterization value corresponding to the time period according to the N pressure values ​​in the time period;

[0010] If the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, a compensation value corresponding to the time period is calculated according to a target pressure value, where the target pressure value is selected from N pressure values ​​corresponding to the time period;

[0011] The pressure applied to the battery cell by the adhesive winding device is adjusted using the compensation value corresponding to the time period.

[0012] In an embodiment of the present application, determining the target pressure boundary value applied by the winding device to the battery cell according to the N pressure values ​​in the time period includes:

[0013] Determining a target pressure boundary value applied by the adhesive winding equipment to the battery cell according to the structural information of the battery cell;

[0014] or,

[0015] If the number of the N pressure values ​​in the time period is less than or equal to a preset number, determining a target pressure boundary value applied to the battery cell by the adhesive winding device according to the structural information of the battery cell;

[0016] or,

[0017] If the number of the N pressure values ​​in the time period is greater than the preset number, a target pressure boundary value applied by the winding equipment to the battery cell is determined according to the N pressure values.

[0018] In one embodiment of the present application, the structural information includes the cathode sheet width of the battery cell and the battery cell width; and determining the target pressure boundary value applied by the winding device to the battery cell according to the structural information of the battery cell includes:

[0019] Obtaining an upper limit and a lower limit of a surface pressure applied by the adhesive winding device to the battery cell;

[0020] Multiplying the cathode sheet width of the battery cell, the battery cell width and the upper limit of the surface pressure to obtain an upper limit of the initial pressure, and multiplying the cathode sheet width of the battery cell, the battery cell width and the lower limit of the surface pressure to obtain a lower limit of the initial pressure;

[0021] The upper limit of the initial pressure is multiplied by the first preset upper limit coefficient to obtain the upper limit value of the target pressure boundary value, and the lower limit of the initial pressure is multiplied by the first preset lower limit coefficient to obtain the lower limit value of the target pressure boundary value.

[0022] In an embodiment of the present application, if the number of the N pressure values ​​in the time period is greater than the preset number, determining the target pressure boundary value applied by the winding device to the battery cell according to the N pressure values ​​includes:

[0023] If the number of the N pressure values ​​in the time period is greater than the preset number, then the average value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period is calculated to obtain a first value, the first value is multiplied by a second preset upper limit coefficient to obtain the upper limit value of the target pressure boundary value, and the first value is multiplied by a second preset lower limit coefficient to obtain the upper limit value of the target pressure boundary value;

[0024] or,

[0025] If the number of N pressure values ​​in the time period is greater than the preset number, the standard deviation from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period is calculated to obtain a second value, and the second value is multiplied by a third preset upper limit coefficient to obtain the upper boundary value of the target pressure boundary value, and the second value is multiplied by a third preset lower limit coefficient to obtain the upper boundary value of the target pressure boundary value.

[0026] In an embodiment of the present application, determining the characterization value corresponding to the time period according to the N pressure values ​​in the time period includes:

[0027] If the number of the N pressure values ​​in the time period is less than or equal to the preset number, the last pressure value collected among the N pressure values ​​in the time period is determined as the characterization value corresponding to the time period;

[0028] or,

[0029] If the number of N pressure values ​​in the time period is greater than the preset number, the difference between the last collected pressure value among the N pressure values ​​in the time period and the first value is determined as the characterization value corresponding to the time period, and the first value is the average value of the pressure value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period.

[0030] In one embodiment of the present application, if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, the compensation value corresponding to the time period is calculated according to the target pressure value, including:

[0031] If the characterization value corresponding to the time period is less than the lower boundary value, and the number of N pressure values ​​in the time period is greater than a preset number, the compensation value is obtained by subtracting the target pressure value from the initial pressure middle limit, and the initial pressure middle limit is the average of the upper boundary value and the lower boundary value;

[0032] or,

[0033] If the characterization value corresponding to the time period is greater than the upper boundary value, and the number of N pressure values ​​in the time period is greater than a preset number, the compensation value is obtained by subtracting the initial pressure mid-limit from the target pressure value.

[0034] In an embodiment of the present application, the method further includes:

[0035] Counting the number of times that the characterization value corresponding to the M time periods is not within the interval formed by the upper boundary value and the lower boundary value;

[0036] If the number reaches the preset number, the glue winding equipment is controlled to stop and an alarm message is output, wherein the alarm message is used to indicate abnormal pressure.

[0037] In a second aspect, an embodiment of the present application provides a control device for a glue winding device, the device comprising:

[0038] A collection module, used for collecting multiple pressure values ​​applied to the battery cell by the glue winding equipment in M ​​time periods during the battery cell production process, each of the time periods includes N pressure values, N is an integer greater than 1, and M is an integer greater than 1; the glue winding equipment is used for hot pressing and glue winding and pasting the battery cell;

[0039] For each of the time periods, the following processing is performed:

[0040] A determination module, configured to determine a target pressure boundary value applied by the adhesive winding device to the battery core according to the N pressure values ​​in the time period, wherein the target pressure boundary value includes an upper boundary value and a lower boundary value;

[0041] The determination module is further used to determine the characterization value corresponding to the time period according to the N pressure values ​​in the time period;

[0042] a calculation module, configured to calculate a compensation value corresponding to the time period according to a target pressure value if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, wherein the target pressure value is selected from N pressure values ​​corresponding to the time period;

[0043] The control module is used to adjust the pressure applied to the battery cell by the winding device using the compensation value corresponding to the time period.

[0044] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a memory storing computer program instructions;

[0045] When the processor executes the computer program instructions, the control method of the adhesive winding equipment as described in the first aspect is implemented.

[0046] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having computer program instructions stored thereon, and when the computer program instructions are executed by a processor, the control method of the adhesive winding equipment as described in the first aspect is implemented.

[0047] In a fifth aspect, an embodiment of the present application provides a computer program product. When instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the control method of the adhesive winding device as described in the first aspect.

[0048] The control method, device, electronic device and storage medium of the winding equipment of the embodiment of the present application collect multiple pressure values ​​applied to the battery cell by the winding equipment in M ​​time periods, each time period includes N pressure values; the following processing is performed for each time period: the target pressure boundary value applied to the battery cell by the winding equipment is determined according to the N pressure values ​​in the time period, and the boundary value includes an upper boundary value and a lower boundary value; the characterization value corresponding to the time period is determined according to the N pressure values ​​in the time period; if the characterization value is not within the interval formed by the upper boundary value and the lower boundary value, the compensation value corresponding to the time period is calculated according to the target pressure value; the pressure applied to the battery cell by the winding equipment is adjusted by using the compensation value corresponding to the time period, and whether it is within the interval range is determined according to the actual production data, so as to adjust the pressure of the winding equipment, which can improve the production quality of the battery cell and reduce the breakage rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0050] Figure 1 It is a flow chart of a control method of a glue winding device provided in an embodiment of the present application;

[0051] Figure 2 It is another flow chart of the control method of the adhesive winding equipment provided in the embodiment of the present application;

[0052] Figure 3 It is a structural schematic diagram of a control device for a rubber winding device provided in an embodiment of the present application;

[0053] Figure 4 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0056] In order to solve the problems of the prior art, the embodiments of the present application provide a control method, device, electronic device and storage medium for a glue winding device. The control method for the glue winding device provided by the embodiments of the present application is first introduced below.

[0057] Figure 1 1 is a flow chart of a control method for a glue winding device provided in an embodiment of the present application. Figure 1 As shown, the control method of the adhesive winding device provided in the embodiment of the present application is applied to an electronic device, such as a server, and includes the following steps 101 to 104, wherein:

[0058] Step 101, during the battery cell production process, multiple pressure values ​​applied to the battery cell by the glue winding equipment in M ​​time periods are collected, each time period includes N pressure values, N is an integer greater than 1, and M is an integer greater than 1. The glue winding equipment is used to perform hot pressing, shaping, and glue winding and pasting on the battery cell.

[0059] Among them, the glue winding equipment is used to perform hot pressing, shaping and glue winding on the battery cell, i.e. the bare battery cell, after the pole piece is wound, so as to reduce the misalignment of the pole piece, and the electronic device is connected to at least one glue winding equipment.

[0060] Before the production of battery cells, the information of the battery cells produced this time and the equipment information of the winding equipment used need to be input into the electronic equipment. The battery cell information includes structural information, surface pressure size X, and the structural information of the battery cell includes: cathode sheet width, battery cell width, and battery cell thickness H; the equipment information of the winding equipment includes: winding hot pressing pressure F, cylinder diameter, cylinder input air pressure, and cylinder downward pressure stroke Z.

[0061] The electronic device calculates the cell pressure area based on the cathode sheet width and the cell width, and uses formula (1) to calculate the cell pressure area, as follows:

[0062] S=L 1 ×L 2 (1)

[0063] Among them, S is the pressure area of ​​the battery cell, L 1 is the cathode width, L 2 is the cell width.

[0064] The cylinder output pressure is calculated based on the cylinder diameter and the cylinder input pressure. The cylinder output pressure is calculated using formula (2), as follows:

[0065]

[0066] Among them, F 2 is the cylinder output pressure, D is the cylinder diameter, F 1 Enter air pressure into the cylinder.

[0067] The product design surface pressure is calculated based on the cylinder output pressure and the pressure area of ​​the battery cell. The product design surface pressure is calculated using formula (3), as follows:

[0068]

[0069] Among them, M 1 Design surface pressure for the product, F 2 is the cylinder output pressure, and S is the pressure area of ​​the battery cell.

[0070] The theoretical pressure applied by the winding equipment to the battery cell is calculated based on the product design surface pressure, cathode sheet width and battery cell width. The theoretical pressure is calculated using formula (4), as follows:

[0071] F 3 =M 1 ×L 1 ×L 2 (4)

[0072] Among them, F 3 is the theoretical pressure, M 1 Design surface pressure for the product, L 1 is the cathode width, L 2 is the cell width.

[0073] The electronic device records the above information locally for use in production.

[0074] In this embodiment, during the battery cell production process, multiple pressure values ​​applied to the battery cells by the winding equipment in M ​​time periods are collected, each time period includes N pressure values, N is an integer greater than 1, and M is an integer greater than 1.

[0075] For each time period, the following processing is performed:

[0076] Step 102: Determine a target pressure boundary value applied to the battery cell by the winding equipment according to the N pressure values ​​in the time period, wherein the target pressure boundary value includes an upper boundary value and a lower boundary value.

[0077] In this embodiment, the target pressure boundary value applied to the battery cell by the winding equipment is calculated based on N pressure values ​​in a time period. The target pressure boundary value can be determined based on the number of N pressure values, or determined based on the last pressure value collected among the N pressure values. The target pressure boundary value includes an upper boundary value and a lower boundary value.

[0078] Step 103: determining a characterization value corresponding to the time period according to the N pressure values ​​in the time period.

[0079] In this embodiment, there are multiple characterization values ​​corresponding to the time period, and the characterization value corresponding to the time period is determined according to the number of N pressure values ​​in the time period, or according to the last pressure value collected among the N pressure values.

[0080] Step 104, if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, a compensation value corresponding to the time period is calculated according to a target pressure value, where the target pressure value is selected from N pressure values ​​corresponding to the time period.

[0081] In this embodiment, if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, it means that the pressure is normal and there is no need to alarm or adjust the pressure value; if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, it means that the pressure is abnormal and there is a need to alarm and / or adjust the pressure value. Specifically, the compensation value corresponding to the time period is calculated based on the target pressure value, and the target pressure value is selected from the N pressure values ​​corresponding to the time period, such as selecting the last pressure value collected among the N pressure values.

[0082] Step 105: Use the compensation value corresponding to the time period to adjust the pressure applied by the winding equipment to the battery cell.

[0083] In this embodiment, the pressure applied to the battery cell by the winding device is adjusted using the compensation value corresponding to the time period, the compensation value is compensated to the pressure set by the winding device, and the battery cell is produced using the adjusted pressure value.

[0084] In this embodiment, during the production process of battery cells, multiple pressure values ​​applied to the battery cells by the glue winding equipment in M ​​time periods are collected, and each time period includes N pressure values; the following processing is performed for each time period: a target pressure boundary value applied to the battery cells by the glue winding equipment is determined according to the N pressure values ​​in the time period, and the boundary value includes an upper boundary value and a lower boundary value; a characterization value corresponding to the time period is determined according to the N pressure values ​​in the time period; if the characterization value is not within the interval formed by the upper boundary value and the lower boundary value, a compensation value corresponding to the time period is calculated according to the target pressure value; the pressure applied to the battery cells by the glue winding equipment is adjusted using the compensation value corresponding to the time period, and whether it is within the interval is determined according to actual production data, thereby adjusting the pressure of the glue winding equipment, which can improve the production quality of the battery cells and reduce the breakage rate.

[0085] In one embodiment of the present application, determining a target pressure boundary value applied by the winding device to the battery cell according to N pressure values ​​in a time period includes:

[0086] According to the structural information of the battery cell, determine the target pressure boundary value applied by the winding equipment to the battery cell;

[0087] or,

[0088] If the number of N pressure values ​​in the time period is less than or equal to the preset number, the target pressure boundary value applied to the battery cell by the winding device is determined according to the structural information of the battery cell;

[0089] or,

[0090] If the number of the N pressure values ​​in the time period is greater than a preset number, a target pressure boundary value applied by the winding equipment to the battery cell is determined according to the N pressure values.

[0091] In this embodiment, without considering the quantity, the target pressure boundary value applied to the battery cell by the winding equipment can be calculated directly according to the structural information of the battery cell.

[0092] Taking the quantity into consideration, the number of N pressure values ​​in the time period is compared with the preset number Z. If the number of N pressure values ​​in the time period is less than or equal to the preset number, that is, N≤Z, the target pressure boundary value applied to the battery cell by the glue winding equipment is calculated according to the structural information of the battery cell; if the number of N pressure values ​​in the time period is greater than the preset number, then according to the N pressure values, that is, N>Z, the target pressure boundary value applied to the battery cell by the glue winding equipment is calculated according to the N pressure values.

[0093] Alternatively, adaptive target pressure boundary values ​​are set for different quantities, and adaptive target pressure boundary values ​​are set without considering the quantity, providing a variety of different methods to accurately determine whether the pressure of the equipment needs to be adjusted based on the target pressure boundary value, effectively reducing the scrap rate of battery cells and reducing costs.

[0094] In one embodiment of the present application, the structural information includes the cathode sheet width and the cell width of the cell;

[0095] According to the structural information of the battery cell, determine the target pressure boundary value applied by the winding equipment to the battery cell, including:

[0096] Obtain the upper and lower limits of the surface pressure applied by the winding equipment to the battery cell;

[0097] The cathode sheet width and the cell width of the battery cell are multiplied by the upper limit of the surface pressure to obtain the upper limit of the initial pressure, and the cathode sheet width and the cell width of the battery cell are multiplied by the lower limit of the surface pressure to obtain the lower limit of the initial pressure;

[0098] The upper limit of the initial pressure is multiplied by the first preset upper limit coefficient to obtain the upper limit value of the target pressure boundary value, and the lower limit of the initial pressure is multiplied by the first preset lower limit coefficient to obtain the lower limit value of the target pressure boundary value.

[0099] Different types of battery cells can input corresponding cathode sheet width, battery cell width and other information according to product needs to perform corresponding calculations.

[0100] In this embodiment, when the number is taken into consideration, if the number of N pressure values ​​in the time period is less than or equal to the preset number, that is, N≤Z, the upper limit and lower limit of the surface pressure applied by the winding equipment to the battery cell are obtained, and the cathode sheet width and the battery cell width of the battery cell are multiplied by the upper limit of the surface pressure to obtain the upper limit of the initial pressure, and the initial upper limit of the pressure is calculated using formula (5), as follows:

[0101] F max =M max ×L 1 ×L 2 (5)

[0102] Among them, F max is the upper limit of initial pressure, M max is the upper limit of surface pressure, L 1 is the cathode width, L 2 is the cell width.

[0103] Multiply the cathode sheet width and cell width of the battery cell by the lower limit of the surface pressure to obtain the lower limit of the initial pressure. Use (6) to calculate the lower limit of the initial pressure as follows:

[0104] F min =M min ×L 1 ×L 2 (6)

[0105] Among them, F min is the lower limit of initial pressure, M min is the lower limit of surface pressure, L 1is the cathode width, L 2 is the cell width.

[0106] Further, the initial pressure upper limit and the first preset upper limit coefficient Y max Multiply them to get the upper boundary value of the target pressure boundary value, and multiply the initial pressure lower limit by the first preset lower limit coefficient Y min Multiply them to get the lower boundary value of the target pressure boundary value. The interval range formed by the upper boundary value and the lower boundary value is: [Y min ×F min , Y max ×F max ], in this case the characterization value is F n Indicates that if the characterization value is within the interval formed by the upper boundary value and the lower boundary value, that is, Y min ×F min ≤F n ≤Y max ×F max , where represents the characterization value, no alarm is triggered and the pressure value is not adjusted; if the characterization value is less than the lower boundary value, that is, F n <Y min ×F min , then an alarm is triggered to indicate that the pressure is lower than the lower limit and the pressure value is adjusted. If the characteristic value is greater than the upper limit value, that is, F n >Y max ×F max , an alarm is triggered to indicate that the pressure exceeds the upper limit and the pressure value is adjusted.

[0107] In another case, without considering the quantity, the target pressure boundary value applied by the glue winding equipment to the battery cell can be directly calculated according to the structural information of the battery cell. Specifically, the upper limit and lower limit of the surface pressure applied by the glue winding equipment to the battery cell are obtained; the cathode sheet width and the battery cell width of the battery cell are multiplied by the upper limit of the surface pressure to obtain the upper limit of the initial pressure, and the cathode sheet width and the battery cell width of the battery cell are multiplied by the lower limit of the surface pressure to obtain the lower limit of the initial pressure; the upper limit of the initial pressure F max Multiply it by the fourth preset upper limit coefficient d to obtain the upper limit value of the target pressure boundary value, that is, d×F max , set the initial pressure lower limit F min Multiply it by the fourth preset lower limit e coefficient to obtain the lower limit value of the target pressure boundary value, that is, e×F min , the interval range formed by the upper boundary value and the lower boundary value is: [e×F min , d×F max ].

[0108] The above calculation method is used for different types of battery cells to accurately calculate the upper and lower limits of the initial pressure of the adapted battery cells, which can be applicable to the production of different types of battery cells.

[0109] In one embodiment of the present application, if the number of N pressure values ​​in the time period is greater than a preset number, determining the target pressure boundary value applied by the winding device to the battery cell according to the N pressure values ​​includes:

[0110] If the number of N pressure values ​​in the time period is greater than the preset number, then the average value of the pressure value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period is calculated to obtain a first value, the first value is multiplied by the second preset upper limit coefficient to obtain an upper limit value of the target pressure boundary value, and the first value is multiplied by the second preset lower limit coefficient to obtain an upper limit value of the target pressure boundary value;

[0111] or,

[0112] If the number of N pressure values ​​in the time period is greater than the preset number, the standard deviation from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period is calculated to obtain a second value, and the second value is multiplied by the third preset upper limit coefficient to obtain the upper boundary value of the target pressure boundary value, and the second value is multiplied by the third preset lower limit coefficient to obtain the upper boundary value of the target pressure boundary value.

[0113] In this embodiment, the number of N pressure values ​​in the time period is compared with the preset number Z. If the number of N pressure values ​​in the time period is greater than the preset number, that is, N>Z, the average value of the pressure value from the Kth pressure value to the last collected pressure value in the N pressure values ​​in the time period is calculated to obtain a first value μ, and the first value is multiplied by the second preset upper limit coefficient B to obtain the upper boundary value of the target pressure boundary value, and then the first value is multiplied by the second preset lower limit coefficient A to obtain the upper boundary value of the target pressure boundary value. The interval range formed by the upper boundary value and the lower boundary value is: [μ×A, μ×B]. If the characterization value corresponding to the time period is in [μ×A, μ×B], the alarm is not triggered and the pressure value is not adjusted.

[0114] Alternatively, if the number of N pressure values ​​in the time period is greater than the preset number, that is, N>Z, the standard deviation from the Kth pressure value to the last collected pressure value in the N pressure values ​​in the time period is calculated to obtain the second value σ, and the second value is multiplied by the third preset upper limit coefficient b to obtain the upper boundary value of the target pressure boundary value, and then the second value is multiplied by the third preset lower limit coefficient a to obtain the upper boundary value of the target pressure boundary value, and the interval range formed by the upper boundary value and the lower boundary value is: [σ×a, σ×b]. If the characterization value corresponding to the time period is in [σ×a, σ×b], the alarm is not triggered and the pressure value is not adjusted.

[0115] The mean can be used to describe the center position of multiple pressure values, and the standard deviation can be used to describe the dispersion of multiple pressure values. A variety of methods for calculating target pressure boundary values ​​are provided, so as to accurately determine whether the pressure of the equipment needs to be adjusted according to the target pressure boundary value, effectively reduce the scrap rate of battery cells, and improve the performance of battery cells.

[0116] In an embodiment of the present application, determining a characterization value corresponding to a time period according to N pressure values ​​in the time period includes:

[0117] If the number of the N pressure values ​​in the time period is less than or equal to the preset number, the last pressure value collected among the N pressure values ​​in the time period is determined as the characterization value corresponding to the time period;

[0118] or,

[0119] If the number of N pressure values ​​in the time period is greater than a preset number, the difference between the last collected pressure value among the N pressure values ​​in the time period and the first value is determined as the characterization value corresponding to the time period, and the first value is the average value of the pressure value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period.

[0120] In this embodiment, when the number is considered, the number of N pressure values ​​in the time period is compared with the preset number Z. If the number of N pressure values ​​in the time period is less than or equal to the preset number, that is, N≤Z, the interval range formed by the upper boundary value and the lower boundary value is: [Y min ×F min , Y max ×F max ], the last pressure value collected among the N pressure values ​​in the time period is determined as the characterization value corresponding to the time period. If the characterization value F n Located in [Y min ×F min , Y max ×F max ], that is, Y min ×F min ≤F n ≤Y max ×F max , then no alarm is triggered and the pressure value is not adjusted; if the characterization value is less than the lower boundary value, that is, F n <Y min ×F min , an alarm is triggered to indicate that the pressure is lower than the lower limit and the pressure value is adjusted; if the characterization value is greater than the upper limit, that is, F n >Y max ×F max , an alarm is triggered to indicate that the pressure exceeds the upper limit and the pressure value is adjusted.

[0121] Alternatively, if the number of N pressure values ​​in the time period is greater than the preset number, that is, N>Z, and the interval range formed by the upper boundary value and the lower boundary value is: [μ×A, μ×B], the difference between the last collected pressure value in the N pressure values ​​in the time period and the first value μ is determined as the characterization value corresponding to the time period, and the first value is the average value of the pressure value from the Kth pressure value to the last collected pressure value in the N pressure values ​​in the time period. In this case, the characterization value is used as F n -μ indicates that if the characterization value F n -μ is in [μ×A, μ×B], that is, μ×A≤F n -μ≤μ×B, no alarm is triggered and the pressure value is not adjusted; if the characterization value is less than the lower boundary value, that is, F n -μ<μ×A, an alarm is triggered to indicate that the pressure is lower than the lower limit and the pressure value is adjusted; if the characteristic value is greater than the upper limit value, that is, F n -μ>μ×B, an alarm is triggered to indicate that the pressure exceeds the upper limit and to adjust the pressure value.

[0122] If the number of N pressure values ​​in the time period is greater than the preset number, that is, N>Z, and the interval range formed by the upper boundary value and the lower boundary value is: [σ×a, σ×b], the difference between the last collected pressure value and the first value μ in the N pressure values ​​in the time period is determined as the characterization value corresponding to the time period, and the first value is the average value of the pressure value from the Kth pressure value to the last collected pressure value in the N pressure values ​​in the time period. In this case, the characterization value is used by F n -μ indicates that if the characterization value F n -μ is in [σ×a, σ×b], that is, σ×a≤F n -μ≤σ×b, no alarm is triggered and the pressure value is not adjusted; if the characterization value is less than the lower boundary value, that is, F n -μ<σ×a, an alarm is triggered to indicate that the pressure is lower than the lower limit and the pressure value is adjusted; if the characteristic value is greater than the upper limit value, that is, F n -μ>σ×b, an alarm is triggered to indicate that the pressure exceeds the upper limit and to adjust the pressure value.

[0123] Or, without considering the quantity, the interval range formed by the upper boundary value and the lower boundary value of the target pressure boundary value is: [e×F min , d×F max ], the last pressure value collected among the N pressure values ​​in the time period is determined as the characterization value corresponding to the time period. In this case, the characterization value is expressed by F n Indicates that if the characterization value F n Located at [e×F min , d×F max ], that is e×F min ≤F n ≤d×F max, then no alarm is triggered and the pressure value is not adjusted; if the characterization value is less than the lower boundary value, that is, F n <e×F min , an alarm is triggered to indicate that the pressure is lower than the lower limit and the pressure value is adjusted; if the characterization value is greater than the upper limit, that is, F n >d×F max , an alarm is triggered to indicate that the pressure exceeds the upper limit and the pressure value is adjusted.

[0124] It can send out pressure alarm to prompt relevant personnel to check the equipment in time.

[0125] In one embodiment of the present application, if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, the compensation value corresponding to the time period is calculated according to the target pressure value, including:

[0126] If the characterization value corresponding to the time period is less than the lower boundary value, and the number of N pressure values ​​in the time period is greater than the preset number, the target pressure value is subtracted from the initial pressure middle limit to obtain the compensation value, and the initial pressure is determined according to the cathode sheet width, cell width, surface pressure upper limit and surface pressure lower limit of the battery cell;

[0127] or,

[0128] If the characterization value corresponding to the time period is greater than the upper boundary value, and the number of N pressure values ​​in the time period is greater than the preset number, the target pressure value is subtracted from the initial pressure limit to obtain the compensation value.

[0129] In this embodiment, if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, and the number of N pressure values ​​in the time period is greater than the preset number, that is, N>Z, it is necessary to adjust the pressure applied by the winding equipment to the battery cell, and the target pressure value is selected from the N pressure values. For example, the last collected pressure value is selected from the N pressure values ​​in the time period as the target pressure value, and the target pressure value is subtracted from the initial pressure limit to obtain the compensation value.

[0130] The initial pressure mid-limit is calculated according to the cathode sheet width, the cell width, the upper limit of the surface pressure, and the lower limit of the surface pressure of the battery cell. The initial pressure mid-limit is calculated using formula (7), as follows:

[0131] F u =0.5×(M min +M max )×L 1 ×L 2 (7)

[0132] Among them, F u is the initial pressure limit, M min is the lower limit of surface pressure, M max is the upper limit of surface pressure, L 1is the cathode width, L 2 is the cell width.

[0133] Alternatively, if the characterization value corresponding to the time period is greater than the upper boundary value, and the number of N pressure values ​​in the time period is greater than the preset number, that is, N>Z, then the target pressure value is subtracted from the initial pressure limit to obtain the compensation value. The purpose of compensation is to ensure that the characterization value is within the interval formed by the upper boundary value and the lower boundary value. By adaptively adjusting the pressure to ensure that it is within the normal range, the battery cell will not be damaged due to excessive or insufficient pressure, thereby improving the quality of the product.

[0134] It should be noted that if the characterization value corresponding to the time period is less than the lower boundary value, and the number of N pressure values ​​in the time period is less than or equal to the preset number, that is, N≤Z, an alarm is issued, the data volume is small, and compensation may not be performed first; if the characterization value corresponding to the time period is greater than the upper boundary value, and the number of N pressure values ​​in the time period is less than or equal to the preset number, that is, N≤Z, an alarm is issued, the data volume is small, and compensation may not be performed first.

[0135] In an embodiment of the present application, the method further includes:

[0136] Count the number of times that the characterization value corresponding to the M time periods is not within the interval formed by the upper boundary value and the lower boundary value;

[0137] If the number reaches the preset number, the glue winding equipment is controlled to stop and an alarm message is output. The alarm message is used to indicate abnormal pressure.

[0138] In this embodiment, the number of times that the characterization values ​​corresponding to M time periods are not within the interval formed by the upper boundary value and the lower boundary value is counted, and the number is compared with the preset number. If the number is greater than or equal to the preset number, the glue winding equipment is controlled to stop, and an alarm is triggered, and a first alarm message is output. The first alarm message is used to prompt multiple pressure alarms, and the alarm message is output so that relevant personnel can be notified in time.

[0139] In an embodiment of the present application, the method further includes:

[0140] Calibrate the pressure of the glue winding equipment.

[0141] Before the production of battery cells, the information of the battery cells produced this time and the equipment information of the glue winding equipment used need to be input into the electronic equipment. After that, the pressure of the glue winding equipment needs to be calibrated. Specifically, the pressure calibration mode is turned on. After the cylinder pressure action is turned on, the pressure sensor records the value. When the sensor pressure is greater than the threshold Fs, the stroke height is searched and the cylinder pressure speed is reduced to ensure the accuracy of the pressure. The pressure peak reaches the initial pressure limit and then stops automatically. The equipment sets the maximum pressure F 0 Upload to the database and confirm F0 With the initial pressure upper limit F max and initial pressure lower limit F min If F 0 >F max , or, F 0 <F min , the glue winding equipment is controlled to stop, and an alarm is triggered, and the second alarm information is output. The second alarm information is used to indicate that the pressure calibration is abnormal; if F min ≤F 0 ≤F max , it is confirmed that the pressure calibration of the glue winding equipment is normal; after the pressure calibration is normal, the pressure calibration mode is switched to the normal production mode, and the pressure sensor is turned on to record the pressure value after the cylinder is pressed down to execute: the step of collecting multiple pressure values ​​applied to the battery cell by the glue winding equipment in M ​​time periods.

[0142] By calibrating the winding equipment, accuracy and reliability can be ensured, thus ensuring smooth production.

[0143] The following is an example of the control method of the glue winding equipment provided in the embodiment of the present application.

[0144] Figure 2 1 is another flow chart of the control method of the adhesive winding device provided in the embodiment of the present application. Figure 2 As shown, the control method of the adhesive winding device provided in the embodiment of the present application includes the following steps:

[0145] Step 201, switching the pressure standard model of the glue winding equipment; Step 202, pressure calibration of the glue winding equipment; Step 203, monitoring and alarming of the pressure of the glue winding equipment; Step 204, adaptive adjustment of the pressure of the glue winding equipment, as follows:

[0146] Parameter description: The hot pressing pressure of the rubber winding is F, the cylinder diameter is D, and the cylinder input pressure is F 1 , the cylinder output pressure is F 2 , the cathode width is L 1 , the bare cell width (i.e. the cell width mentioned above) is L 2 The pressure area of ​​the battery cell is S, the surface pressure size is X, the battery cell thickness is H, the cylinder downward stroke is Z, the length and width of the pressure calibration block can be referred to within the product specification range, and the height can refer to the thickness of the battery cell after compression.

[0147] Step 201 specifically includes: before the hot pressing of the winding, selecting the cell model information, and adjusting the relevant setting parameters synchronously with the model.

[0148] The pressure area of ​​the battery cell is S = L1 × L2;

[0149] The cylinder output pressure is F 2 =π×D×D×F1 / 4;

[0150] Product design surface pressure size M 1 =F 2 / S, that is, theoretical F 3 =M 1 ×L1×L2, to ensure the stability of the battery cell under pressure, F 2 In F 3 within the range.

[0151] The cylinder diameter information needs to be input into the electronic device, such as through the control panel. If the cylinder needs to be debugged and replaced, the cylinder diameter information needs to be confirmed and updated. Different types of batteries can input the corresponding cathode width and bare battery width information according to product requirements. Set M max (surface pressure upper limit) and M min (Lower limit of surface pressure), automatically calculated in the program of the electronic device:

[0152] Initial pressure upper limit: F max =M max ×L1×L2; initial pressure lower limit: F min =M min ×L 1 ×L 2 , initial pressure limit: F u =0.5×(M min +M max )×L1×L2, and record the above parameters locally.

[0153] Step 202 specifically includes:

[0154] After setting the cell model information, the pressure calibration block can be used for calibration before production. Turn on the pressure calibration mode, after the cylinder pressure action is turned on, the pressure sensor records the value. When the sensor pressure is greater than Fs, the stroke height is searched and the cylinder pressure speed is reduced to ensure the pressure accuracy. It stops automatically after the pressure peak reaches the initial pressure limit. The maximum pressure is uploaded to the database and compared with F min With F max If the value of F is not satisfied, min ≤F≤F max , the machine will stop and trigger an alarm pop-up window "Pressure calibration NG, please stop the machine for troubleshooting"; if F min ≤F≤F max , pressure calibration OK.

[0155] Step 203 specifically includes:

[0156] After the pressure calibration is OK, switch the pressure calibration mode to the normal production mode. After the cylinder is pressed down, the equipment turns on the pressure sensor to record the pressure value. The maximum value of the hot-pressing pressure is F. The system collects the hot-pressing pressure F of the hot-pressing pressure in turn.1 , F 2 , F 3 , …, F N , F N+1 , and build database records in real time.

[0157] The number of databases is recorded as Z, the initial number of databases is Z0 (Z>Z0), and Z0 consecutive data will not trigger an alarm. After the Z0+1th battery cell, if N≤Z, Y min is the lower limit coefficient, Y max is the upper limit coefficient, if Y min ×F min ≤F N+1 ≤Y max ×F max (That is, within the range of the upper boundary value and the lower boundary value above, that is, Y min ×F min ≤F n ≤Y max ×F max ), continue to collect pressure data; if F N+1 <Y min ×F min (i.e., F n <Y min ×F min ), the machine will be shut down and an alarm pop-up window will be triggered: "The pressure of the winding test is low, the lower limit of the library pressure alarm, please check"; F N+1 >Y max ×F max (i.e., F n >Y max ×F max ), the machine will shut down and trigger an alarm pop-up window "The test pressure of the glue winding exceeds the alarm upper limit of the library pressure, please check".

[0158] If N>Z, the system calculates the mean μ(F N-K+1 +F 2 +F 3 +…+F N+1 ), acquisition pressure F N+1 , read the most recent K (set according to actual needs) data (F N-K+1 、F N-K ,…,F N+1 (save the new and discard the old)), calculate the mean μ and standard deviation σ, if (F N+1 -μ) / σ≤-a (a is set according to actual needs), the machine will be shut down and an alarm pop-up window will be triggered, "The pressure of the winding test is lower than the lower limit of a*σ value, please check"; if the σ multiple is bad, that is, (F N+1 -μ) / σ≥b (b is set according to actual needs), the machine will be shut down and an alarm pop-up window will be triggered, "The test pressure of the glue wrapping exceeds the upper limit of b*σ value, please check"; if -a<(F N+1-μ) / σ<b(i.e., σ×a≤F n -μ≤σ×b), continue to judge. N+1 -μ) / μ<-A, the machine will be shut down and an alarm pop-up window will be triggered, "The mean pressure of the winding test is lower than the lower limit, please check", if (F N+1 -μ) / μ>B, the machine will be shut down and an alarm pop-up window will be triggered, "The pressure of the winding test exceeds the upper limit of the average value, please check", if -A≤(F N+1 -μ) / μ≤B (i.e., μ×A≤F in the above text n -μ≤μ×B), then proceed to the next step.

[0159] If the above pressure alarm or travel alarm is triggered continuously for ≥m times (m is set according to actual needs), the machine will be shut down and an alarm pop-up window will be triggered, "m consecutive pressure alarms, please confirm".

[0160] Step 204 specifically includes: the cell pressure is adaptively adjusted as follows:

[0161] Set the upper limit coefficient of the warning to d (set according to actual needs) and the lower limit coefficient of the warning to e (set according to actual needs).

[0162] Adjust according to the measured pressure. When the cell pressure satisfies e×Fmin≤F N+1 ≤d×Fmin (i.e., if the characterization value F n Located at [e×F min ×, d×F max ], that is e×F min ≤F n ≤d×F max , no alarm is triggered and the pressure value is not adjusted), the system determines that there is no abnormality in the hot pressing pressure state of the battery core and continues to collect pressure. min <F N+1 <e×F min When the electronic device automatically compensates the initial pressure value, the limit Fμ-F N+1 to the pressure setting of the winding equipment; when d×F max <F N+1 <

[0163] F max When the electronic device automatically compensates the initial pressure value, the limit Fμ-F N+1 to the pressure setting of the winding equipment.

[0164] After the above pressure adaptive adjustment, when the pressure is tested next time, if the pressure warning is triggered, the corresponding pop-up alarm will add a prompt "Pressure adjustment is abnormal, please confirm".

[0165] By increasing the monitoring of the winding pressure, adding alarm and early warning mechanisms, the stability and consistency of the cell winding can be improved. Provide a switching logic, establish a pressure calibration logic, provide a pressure alarm, perform early warning and adaptive adjustment of the winding hot press, improve the stability and consistency of the winding hot press, reduce the scrapping of the cell due to replacement and debugging, and improve the process stability and quality rate through adaptive adjustment of pressure fluctuations, thereby reducing costs.

[0166] Figure 3 The structure diagram of the control device of the adhesive winding equipment provided in the embodiment of the present application is shown. Figure 3 As shown, the control device 300 of the glue winding equipment includes:

[0167] The collection module 301 is used to collect multiple pressure values ​​applied to the battery cell by the glue winding equipment in M ​​time periods during the battery cell production process, each time period includes N pressure values, N is an integer greater than 1, and M is an integer greater than 1; the glue winding equipment is used to perform hot pressing shaping and glue winding and pasting on the battery cell;

[0168] For each time period, the following processing is performed:

[0169] A first determination module 302 is used to determine a target pressure boundary value applied by the winding equipment to the battery cell according to N pressure values ​​in a time period, where the target pressure boundary value includes an upper boundary value and a lower boundary value;

[0170] The second determination module 303 is further used to determine the characterization value corresponding to the time period according to the N pressure values ​​in the time period;

[0171] A calculation module 304 is used to calculate a compensation value corresponding to the time period according to a target pressure value if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, and the target pressure value is selected from N pressure values ​​corresponding to the time period;

[0172] The control module 305 is used to adjust the pressure applied by the winding equipment to the battery cell by using the compensation value corresponding to the time period.

[0173] In one embodiment of the present application, the first determination module 302 is also used to determine the target pressure boundary value applied to the battery cell by the glue winding equipment according to the structural information of the battery cell if the number of N pressure values ​​in the time period is less than or equal to the preset number; if the number of N pressure values ​​in the time period is greater than the preset number, determine the target pressure boundary value applied to the battery cell by the glue winding equipment according to the N pressure values; or, determine the target pressure boundary value applied to the battery cell by the glue winding equipment according to the structural information of the battery cell.

[0174] In one embodiment of the present application, the first determination module 302 is also used to obtain the upper limit and lower limit of the surface pressure applied to the battery cell by the glue winding equipment if the number of N pressure values ​​in the time period is less than or equal to a preset number; multiply the cathode sheet width and the battery cell width of the battery cell by the upper limit of the surface pressure to obtain an initial upper limit of pressure, and multiply the cathode sheet width and the battery cell width of the battery cell by the lower limit of the surface pressure to obtain an initial lower limit of pressure; multiply the initial upper limit of pressure by the first preset upper limit coefficient to obtain an upper limit value of the target pressure boundary value, and multiply the initial lower limit of pressure by the first preset lower limit coefficient to obtain a lower limit value of the target pressure boundary value.

[0175] In one embodiment of the present application, the first determination module 302 is also used to, if the number of N pressure values ​​in the time period is greater than the preset number, calculate the average value of the pressure value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period to obtain a first value, multiply the first value by the second preset upper limit coefficient to obtain an upper boundary value of the target pressure boundary value, and multiply the first value by the second preset lower limit coefficient to obtain an upper boundary value of the target pressure boundary value; or, if the number of N pressure values ​​in the time period is greater than the preset number, calculate the standard deviation of the pressure value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period to obtain a second value, multiply the second value by the third preset upper limit coefficient to obtain an upper boundary value of the target pressure boundary value, and multiply the second value by the third preset lower limit coefficient to obtain an upper boundary value of the target pressure boundary value.

[0176] In one embodiment of the present application, the second determination module 303 is also used to determine the last collected pressure value among the N pressure values ​​in the time period as the characterization value corresponding to the time period if the number of N pressure values ​​in the time period is less than or equal to a preset number; or, if the number of N pressure values ​​in the time period is greater than the preset number, determine the difference between the last collected pressure value among the N pressure values ​​in the time period and the first value as the characterization value corresponding to the time period, and the first value is the average value of the pressure value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period.

[0177] In one embodiment of the present application, the calculation module 304 is also used to obtain a compensation value by subtracting the target pressure value from the initial pressure middle limit if the characterization value corresponding to the time period is less than the lower boundary value, and the number of N pressure values ​​in the time period is greater than a preset number, where the initial pressure middle limit is the average of the upper boundary value and the lower boundary value; or, if the characterization value corresponding to the time period is greater than the upper boundary value, and the number of N pressure values ​​in the time period is greater than a preset number, then the compensation value is obtained by subtracting the initial pressure middle limit from the target pressure value.

[0178] In one embodiment of the present application, the control device of the glue winding equipment also includes an alarm module, which is used to count the number of times that the characterization values ​​corresponding to M time periods are not within the interval range formed by the upper boundary value and the lower boundary value; if the number reaches a preset number, the glue winding equipment is controlled to shut down and an alarm message is output, and the alarm message is used to indicate pressure abnormality.

[0179] The control device 300 of the glue winding equipment provided in the embodiment of the present application can implement each process implemented by the aforementioned control method embodiment of the glue winding equipment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0180] Figure 4 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.

[0181] The electronic device may include a processor 401 and a memory 402 storing computer program instructions.

[0182] Specifically, the processor 401 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0183] Memory 402 may include a large capacity memory for data or instructions. By way of example and not limitation, memory 402 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, memory 402 may include a removable or non-removable (or fixed) medium. In appropriate cases, memory 402 may be inside or outside of an integrated gateway disaster recovery device. In a specific embodiment, memory 402 is a non-volatile solid-state memory.

[0184] The memory may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to the first aspect or the second aspect of the present disclosure.

[0185] The processor 401 implements any one of the control methods for the adhesive winding equipment in the above embodiments by reading and executing the computer program instructions stored in the memory 402 .

[0186] In one example, the electronic device may further include a communication interface 403 and a bus 410. Figure 4 As shown, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 and communicate with each other.

[0187] The communication interface 403 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0188] Bus 410 includes hardware, software or both, and the control method of the glue wrapping device or the parts of the verification device are coupled to each other.For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In suitable cases, bus 410 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the application considers any suitable bus or interconnection.

[0189] In addition, in combination with the control method of the adhesive wrapping device in the above embodiment, the embodiment of the present application can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any control method of the adhesive wrapping device in the above embodiment is implemented.

[0190] In addition, the embodiments of the present application may be implemented by providing a computer program product. When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device implements any one of the control methods for the adhesive winding device in the above embodiments.

[0191] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiment, several specific steps are described as examples. However, the method process of the present application is not limited to the specific steps described, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0192] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0193] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0194] Aspects of the present disclosure are described above with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It can also be understood that each box in the block diagram and / or flowchart and the combination of boxes in the block diagram and / or flowchart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0195] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A control method for a rubber winding device, characterized in that: The adhesive winding device is used to perform hot pressing shaping and adhesive winding and pasting on the battery core, and the method comprises: In the process of producing battery cells, multiple pressure values ​​applied to the battery cells by the winding equipment in M ​​time periods are collected, each of the time periods includes N pressure values, N is an integer greater than 1, and M is an integer greater than 1; For each of the time periods, the following processing is performed: Determine, according to the N pressure values ​​in the time period, a target pressure boundary value applied by the winding device to the battery core, wherein the target pressure boundary value includes an upper boundary value and a lower boundary value; Determine a characterization value corresponding to the time period according to the N pressure values ​​in the time period; If the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, a compensation value corresponding to the time period is calculated according to a target pressure value, and the target pressure value is selected from N pressure values ​​corresponding to the time period; The pressure applied to the battery cell by the adhesive winding device is adjusted using the compensation value corresponding to the time period.

2. The control method of the glue winding equipment according to claim 1, characterized in that: Determining the target pressure boundary value applied by the winding device to the battery cell according to the N pressure values ​​in the time period includes: Determining a target pressure boundary value applied by the adhesive winding equipment to the battery cell according to the structural information of the battery cell; or, If the number of the N pressure values ​​in the time period is less than or equal to a preset number, determining a target pressure boundary value applied to the battery cell by the adhesive winding device according to the structural information of the battery cell; or, If the number of the N pressure values ​​in the time period is greater than the preset number, a target pressure boundary value applied by the winding equipment to the battery cell is determined according to the N pressure values.

3. The control method of the glue winding equipment according to claim 2, characterized in that: The structural information includes the cathode sheet width of the battery cell and the battery cell width; The step of determining a target pressure boundary value applied by the adhesive winding device to the battery cell according to the structural information of the battery cell comprises: Obtaining an upper limit and a lower limit of a surface pressure applied by the adhesive winding device to the battery cell; Multiplying the cathode sheet width of the battery cell, the battery cell width and the upper limit of the surface pressure to obtain an upper limit of the initial pressure, and multiplying the cathode sheet width of the battery cell, the battery cell width and the lower limit of the surface pressure to obtain a lower limit of the initial pressure; The upper limit of the initial pressure is multiplied by the first preset upper limit coefficient to obtain the upper limit value of the target pressure boundary value, and the lower limit of the initial pressure is multiplied by the first preset lower limit coefficient to obtain the lower limit value of the target pressure boundary value.

4. The control method of the glue winding equipment according to claim 2, characterized in that: If the number of the N pressure values ​​in the time period is greater than the preset number, determining a target pressure boundary value applied by the winding device to the battery cell according to the N pressure values, including: If the number of the N pressure values ​​in the time period is greater than the preset number, then the average value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period is calculated to obtain a first value, the first value is multiplied by a second preset upper limit coefficient to obtain the upper limit value of the target pressure boundary value, and the first value is multiplied by a second preset lower limit coefficient to obtain the upper limit value of the target pressure boundary value; or, If the number of N pressure values ​​in the time period is greater than the preset number, the standard deviation from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period is calculated to obtain a second value, and the second value is multiplied by a third preset upper limit coefficient to obtain the upper boundary value of the target pressure boundary value, and the second value is multiplied by a third preset lower limit coefficient to obtain the upper boundary value of the target pressure boundary value.

5. The control method of the glue winding equipment according to claim 1, characterized in that: The determining the characterization value corresponding to the time period according to the N pressure values ​​in the time period includes: If the number of the N pressure values ​​in the time period is less than or equal to the preset number, the last pressure value collected among the N pressure values ​​in the time period is determined as the characterization value corresponding to the time period; or, If the number of N pressure values ​​in the time period is greater than the preset number, the difference between the last collected pressure value among the N pressure values ​​in the time period and the first value is determined as the characterization value corresponding to the time period, and the first value is the average value of the pressure value from the Kth pressure value to the last collected pressure value among the N pressure values ​​in the time period.

6. The control method of the glue winding equipment according to any one of claims 1 to 5, characterized in that: If the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, the compensation value corresponding to the time period is calculated according to the target pressure value, including: If the characterization value corresponding to the time period is less than the lower boundary value, and the number of N pressure values ​​in the time period is greater than a preset number, the compensation value is obtained by subtracting the target pressure value from the initial pressure middle limit, and the initial pressure middle limit is the average of the upper boundary value and the lower boundary value; or, If the characterization value corresponding to the time period is greater than the upper boundary value, and the number of N pressure values ​​in the time period is greater than a preset number, the compensation value is obtained by subtracting the initial pressure mid-limit from the target pressure value.

7. The control method of the glue winding equipment according to claim 1, characterized in that: The method further comprises: Counting the number of times that the characterization value corresponding to the M time periods is not within the interval formed by the upper boundary value and the lower boundary value; If the number reaches the preset number, the glue winding equipment is controlled to stop and an alarm message is output, wherein the alarm message is used to indicate abnormal pressure.

8. A control device for a rubber winding device, characterized in that: The device comprises: A collection module, used for collecting multiple pressure values ​​applied to the battery cell by the glue winding equipment in M ​​time periods during the battery cell production process, each of the time periods includes N pressure values, N is an integer greater than 1, and M is an integer greater than 1; the glue winding equipment is used for hot pressing and glue winding and pasting the battery cell; For each of the time periods, the following processing is performed: A first determination module, configured to determine a target pressure boundary value applied by the adhesive winding device to the battery core according to the N pressure values ​​in the time period, wherein the target pressure boundary value includes an upper boundary value and a lower boundary value; The second determination module is further used to determine the characterization value corresponding to the time period according to the N pressure values ​​in the time period; a calculation module, configured to calculate a compensation value corresponding to the time period according to a target pressure value if the characterization value corresponding to the time period is not within the interval formed by the upper boundary value and the lower boundary value, wherein the target pressure value is selected from N pressure values ​​corresponding to the time period; The control module is used to adjust the pressure applied to the battery cell by the winding device using the compensation value corresponding to the time period.

9. An electronic device, characterized in that: include: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the control method of the adhesive winding equipment as described in any one of claims 1-7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the control method for the adhesive winding equipment according to any one of claims 1 to 7 is implemented.

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