Epoxy plate batch traceable management method and system for lithium battery packaging

Abstract

The invention discloses an epoxy board batch traceable management method and system for lithium battery packaging, and the method comprises the steps: distributing a bar code for each batch, recording the information of each production node, carrying out the sampling and quality inspection after the production is completed, analyzing the quality data, and judging whether the batch is qualified or not, unqualified batches need to trace defective production nodes, collecting tracing data of all the production nodes in a monitoring period, processing the tracing data to obtain a tracing key value, sorting the production nodes according to the tracing key value, generating a tracing priority sorting table, and judging whether the tracing sequence of the defective production nodes needs to be changed or not; according to the traceability key value, the traceability importance of the production nodes is judged, the low-importance nodes are marked as non-key traceability nodes, the production stability of the non-key traceability nodes is evaluated, and the non-key traceability nodes with high stability are removed from the traceability process; the traceability nodes are reduced, the traceability time and cost are reduced, the traceability process is optimized, and high-efficiency and high-quality production is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery packaging material management, and in particular to a batch traceability management method and system for epoxy boards used for lithium battery packaging. Background Art

[0002] As an important energy source for modern electronic devices, the performance and safety of lithium batteries are directly related to the operation of the equipment and the user experience. As a key material for lithium battery packaging, the quality and batch management of epoxy boards are crucial to ensure the overall performance of lithium batteries. Traditional batch management methods have problems such as low traceability efficiency and inaccurate information, which makes it difficult to meet the high requirements of modern industry for product quality control and supervision.

[0003] Traditional epoxy board production batch management methods usually rely on paper records or simple electronic records. These recording methods are not only prone to errors, but also require a lot of manpower and time in the traceability process. When a batch of epoxy boards has quality problems, due to the cumbersome traceability process, the company needs to invest a lot of manpower, material and financial resources to trace it, which not only increases the company's operating costs, but may also cause quality problems to further expand due to untimely traceability, causing greater economic losses to the company. In addition, the existing epoxy board production batch management methods and systems often lack scientific traceability focus and priority sorting during the traceability process. Companies usually need to check all production nodes one by one, which not only increases the complexity and workload of traceability, but also may lead to low traceability efficiency due to lack of focus.

[0004] In view of the above problems, the present invention proposes a batch traceability management method and system for epoxy boards used for lithium battery packaging. Summary of the invention

[0005] The object of the present invention is to provide a batch traceability management method and system for epoxy boards used for lithium battery packaging, so as to solve at least one of the above-mentioned problems in the prior art.

[0006] In a first aspect, the present invention provides a batch traceability management method for epoxy sheets for lithium battery packaging, comprising the following steps: In the production process of epoxy boards for lithium battery packaging, barcodes are assigned to production batches of epoxy boards, and production information of each production node in the production process is recorded; Perform sampling quality inspection on a completed epoxy board production batch to obtain quality data of the epoxy board sample, the quality data including the size and resistivity of the epoxy board sample, analyze the quality data to determine whether the epoxy board sample is qualified, and determine whether the production batch is qualified based on the number of unqualified epoxy board samples. If unqualified, mark it as an unqualified batch, trace the unqualified batch, and obtain the problem production node; Acquire the traceability data of all production nodes within the monitoring period, wherein the traceability data includes the number of times the production node is marked as a problem production node within the monitoring period, the total number of epoxy boards produced in the production batch corresponding to the problem production node, and the number of unqualified epoxy boards caused by the problem production node, process the traceability data to obtain a traceability key value, prioritize the production nodes based on the traceability key value, and obtain a traceability priority ranking table; Based on the obtained traceability priority ranking table, compare it with the preset traceability order to obtain a ranking difference value, and judge whether the traceability order of the problem production node needs to be changed according to the obtained ranking difference value. If necessary, change the traceability order; The traceability importance of production nodes is judged based on the traceability focus value, and production nodes with low traceability importance are marked as non-key traceability nodes. The production stability of non-key traceability nodes is evaluated. If the production stability is high, the non-key traceability nodes are removed from the traceability process.

[0007] In a second aspect, the present invention provides an epoxy board batch traceability management system for lithium battery packaging, comprising the following modules: Barcode assignment module: In the production process of epoxy sheets for lithium battery packaging, a unique barcode is assigned to each production batch and the production information of each production node in the production process is recorded; Batch quality inspection module: Sampling quality inspection of the completed epoxy board production batches, obtaining the quality data of the samples and conducting detailed analysis to determine whether the production batches are qualified. The quality data includes the size and resistivity of the epoxy board samples; Batch tracing module: by scanning the barcode of the production batch, obtain the operation records at each production node of the epoxy board in the production batch, trace each production node according to the preset tracing order, find out the production node that causes the production batch to be unqualified, and mark it as the problem production node; Traceability strategy optimization module: obtains the traceability data of each production node within the monitoring period, the traceability data includes the number of times the production node is marked as a problem production node within the monitoring period, the total number of epoxy boards produced in the production batch corresponding to the problem production node, and the number of unqualified epoxy boards caused by the problem production node. By processing the traceability data, the traceability key value is obtained, and the production nodes are prioritized to obtain a traceability priority ranking table, which is compared with the preset traceability order to determine whether the traceability order of the problem production node needs to be changed. If necessary, the traceability order is changed; Traceability node optimization module: Determine the importance of node traceability based on the traceability key value, mark low-importance nodes as non-key traceability nodes, evaluate the production stability of non-key nodes, and if the stability is high, remove them from the traceability process.

[0008] The beneficial effects of the present invention are as follows: 1. The present invention realizes the traceability of the production process by assigning barcodes to epoxy board production batches and recording production information. Sampling quality inspection and data analysis can timely discover quality problems, ensure product quality, trace unqualified batches, accurately locate problem production nodes, and improve problem solving efficiency. At the same time, by processing the traceability data within the monitoring period, the traceability key value is obtained, and the production nodes are prioritized accordingly, which helps enterprises to reasonably allocate resources, give priority to improving key nodes, reduce the defective product rate, and improve the overall production efficiency and quality level.

[0009] 2. The present invention compares the traceability priority ranking table with the preset traceability order, obtains the ranking difference value and adjusts the traceability order accordingly, which can locate the problem production node more accurately and efficiently, reduce invalid traceability, and improve traceability efficiency. This improvement helps to quickly respond to production problems, optimize production processes, and ensure product quality and production efficiency.

[0010] 3. The present invention can optimize the traceability process, reduce unnecessary traceability work, and improve traceability efficiency by judging the importance of production nodes and removing non-key traceability nodes with high stability. At the same time, it ensures the effective traceability of key nodes, guarantees product quality and production safety, saves resources for enterprises, and improves overall operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a flow chart of a batch traceability management method of epoxy boards for lithium battery packaging provided in Example 1 of the present invention; Figure 2 It is a structural schematic diagram of a batch traceability management system for epoxy boards used for lithium battery packaging provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0013] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0014] Embodiment 1: Figure 1 The present invention provides a flowchart of a batch traceability management method for epoxy boards used for lithium battery packaging provided in the first embodiment of the present invention. The embodiment of the present invention is applicable to the management of epoxy boards for lithium battery packaging. The batch traceability management method for epoxy boards used for lithium battery packaging can be executed by a batch traceability management system for epoxy boards used for lithium battery packaging.

[0015] like Figure 1 As shown, the batch traceability management method of epoxy board for lithium battery packaging provided by the embodiment of the present invention specifically includes the following steps: Step 1: During the production process of epoxy boards for lithium battery packaging, a barcode is assigned to the production batch of the epoxy boards, and production information of each production node in the production process is recorded; Specifically, a unique barcode is assigned to each epoxy board production batch, which is used to identify the production batch and trace the production information; During the production process, the production information of each production node is recorded, and the production information is not limited to the operation records, raw material information, process parameters, equipment status, etc. at each production node of the epoxy board; When a production batch enters the production line, the barcode is scanned by a scanner, the production information is entered into the system, and associated with the barcode; Step 2: Perform a sampling quality inspection on a completed epoxy board production batch to obtain quality data of the epoxy board sample, the quality data including the size and resistivity of the epoxy board sample, analyze the quality data to determine whether the epoxy board sample is qualified, and determine whether the production batch is qualified based on the number of unqualified epoxy board samples. If unqualified, mark it as an unqualified batch, trace the unqualified batch, and obtain the problem production node; Specifically, based on any epoxy board sample; Obtain the size of the epoxy board sample and compare it with the epoxy board size specification range; If the size of the epoxy board sample is within the epoxy board size index range, the epoxy board sample size is judged to be qualified, and a size qualified signal is generated; If the size of the epoxy board sample is not within the epoxy board size index range, the epoxy board sample size is judged to be unqualified, and a size unqualified signal is generated; Similarly, obtain the resistivity of the epoxy board sample and compare it with the epoxy board resistivity index range; If the resistivity of the epoxy board sample is within the epoxy board resistivity index range, the insulation of the epoxy board sample is judged to be qualified, and an insulation qualified signal is generated; If the resistivity of the epoxy board sample is not within the epoxy board resistivity index range, the insulation of the epoxy board sample is judged to be unqualified, and an insulation unqualified signal is generated; The generated signals are analyzed. If a dimension failure signal or an insulation failure signal is generated, the epoxy board sample is judged to be unqualified and the epoxy board sample is marked as an unqualified sample. If all the generated signals are qualified signals, the epoxy board sample is judged to be qualified and the epoxy board sample is marked as a qualified sample. Based on any production batch, the number of unqualified samples and the total number of epoxy board samples in the production batch are obtained, and the ratio of the two is processed to obtain the batch quality coefficient; comparing the obtained batch quality factor with a batch quality factor threshold; If the batch quality coefficient is less than or equal to the batch quality coefficient threshold, it means that there are few unqualified samples, and the production batch is marked as a qualified batch; If the batch quality coefficient is greater than the batch quality coefficient threshold, it means that there are many unqualified samples, and the production batch is marked as an unqualified batch; Based on the marked unqualified batches, by scanning the barcode of the production batch, the operation records at each production node of the epoxy board in the production batch are obtained, and each production node is traced according to the preset traceability sequence to find out the production node that caused the production batch to be unqualified, and mark it as a problem production node, and adjust the operation on the problem production node to ensure the quality and efficiency of subsequent production; It should be noted that in an unqualified batch, there may not be only one problematic production node, and the unqualified production batch may be caused by a variety of reasons; Step 3: Obtain the traceability data of all production nodes within the monitoring period, wherein the traceability data includes the number of times the production node is marked as a problem production node within the monitoring period, the total number of epoxy boards produced in the production batch corresponding to the problem production node, and the number of unqualified epoxy boards caused by the problem production node, process the traceability data to obtain a traceability key value, prioritize the production nodes based on the traceability key value, and obtain a traceability priority ranking table; Specifically, based on any production node, the number of times the production node is marked as a problem production node within the monitoring period is obtained, and the ratio is processed with the sum of the number of times all production nodes are marked as problem production nodes to obtain the problem number ratio, which is marked as EA; Obtain the number of unqualified epoxy boards caused by the problem production node in the corresponding production batch when the production node is marked as the problem production node, and perform ratio processing on it with the total number of epoxy boards produced in the production batch to obtain the batch impact ratio. Obtain the batch impact ratios of all production nodes marked as problem production nodes, sum and average them to obtain the problem degree ratio, which is marked as EB. The obtained problem frequency ratio EA and problem degree ratio EB are processed and the formula is used The traceability key value XE is obtained, where a1 and a2 are both preset proportional coefficients, a1=3.225, a2=1.178; It should be noted that the purpose of the traceability key value is to analyze the number of times a production node is marked as a problem production node and the degree of batch failure caused by being marked as a problem production node, thereby measuring the importance and priority of the production node in the traceability process; According to the traceability key values, the production nodes are sorted in descending order of traceability priority, and priority numbers are marked for the production nodes in the sorting order to obtain a traceability priority sorting table; It should be noted that the purpose of the traceability priority sorting is to improve the traceability efficiency of batches when unqualified batches appear, reduce the time to find and adjust the problem production nodes, and improve the production efficiency of epoxy boards; The technical solution of the embodiment of the present invention is as follows: in the production process of epoxy boards for lithium battery packaging, barcodes are assigned to production batches of epoxy boards, and production information of each production node in the production process is recorded; a sampling quality inspection is performed on a completed production batch of epoxy boards to obtain quality data of the epoxy board samples, the quality data is analyzed to determine whether the epoxy board samples are qualified, and whether the production batch is qualified based on the number of unqualified epoxy board samples. If unqualified, it is marked as an unqualified batch, and the unqualified batch is traced to obtain the problem production node; the traceability data of all production nodes within the monitoring period are obtained, the traceability data is processed to obtain the traceability key value, and the production nodes are prioritized based on the traceability key value to obtain a traceability priority ranking table.

[0016] Embodiment 2: Figure 1 As shown, the batch traceability management method of epoxy board for lithium battery packaging provided by the embodiment of the present invention specifically includes the following steps: Step 4: Based on the obtained traceability priority ranking table, compare it with the preset traceability order to obtain a ranking difference value, and determine whether the traceability order of the problem production node needs to be changed according to the obtained ranking difference value. If necessary, change the traceability order; In some embodiments, a preset serial number is marked for the production node according to a preset traceability sequence, and a preset traceability sorting table is generated; Compare the traceability priority ranking table with the preset traceability ranking table, and compare the priority number of the production node with the preset number based on any production node; If the priority number of the production node is different from the preset number, the production node is marked as a sequence change node; Get the number of sequentially changed nodes among all production nodes, and compare it with the total number of all production nodes to get the change number ratio, marked as BG; Based on any sequence change node, obtain the difference between the priority sequence number of the sequence change node and the preset sequence number and take the absolute value, and compare it with the total number of all production nodes to obtain the change degree ratio of the sequence change node, sum up the change degree ratios of all sequence change nodes and take the average to obtain the change degree average, marked as BC; The obtained change number ratio BG and change degree mean BC are processed and the formula The sorting difference value PC between the traceability priority sorting table and the preset traceability sorting table is calculated, where s1 and s2 are both preset proportional coefficients, s1=3.693, s2=1.417; Compare the obtained sorting difference value with the sorting difference threshold; If the sorting difference between the traceability priority sorting table and the preset traceability sorting table is less than or equal to the sorting difference threshold, it means that the difference between the two sorting tables is small. When unqualified batches appear again, the production nodes are still traced sequentially according to the preset traceability sorting table. If the sorting difference between the traceability priority sorting table and the preset traceability sorting table is greater than the sorting difference threshold, it means that the difference between the two sorting tables is large. When unqualified batches appear again, the traceability order will be changed to the traceability priority sorting table, and the unqualified batches will be traced according to the traceability priority sorting table; It should be noted that the purpose of comparing the traceability priority ranking table with the preset traceability ranking table is to determine the degree of difference between the two ranking tables. If the degree of difference between the two ranking tables is small, it means that changing the traceability order has a low impact on the traceability efficiency, and there is no need to consume manpower and material resources to change the traceability order. If the degree of difference between the two ranking tables is large, it means that changing the traceability order can greatly improve the traceability efficiency of the problem production node, so it is necessary to change the traceability order to the traceability priority ranking table; The technical solution of the embodiment of the present invention is: based on the obtained tracing priority ranking table, it is compared with the preset tracing order to obtain a ranking difference value, and according to the obtained ranking difference value, it is judged whether the tracing order of the problem production node needs to be changed. If necessary, the tracing order is changed to improve the tracing efficiency of the problem production node.

[0017] Embodiment 3: Figure 1 As shown, the batch traceability management method of epoxy board for lithium battery packaging provided by the embodiment of the present invention specifically includes the following steps: Step 5: Determine the traceability importance of the production nodes based on the traceability key values, mark the production nodes with low traceability importance as non-key traceability nodes, and evaluate the production stability of the non-key traceability nodes. If the production stability is high, remove the non-key traceability nodes from the traceability process; Specifically, based on any production node, the traceability key value of the production node is obtained and compared with the traceability key threshold; If the traceability priority value of a production node is less than the traceability priority threshold, the traceability priority of the production node is judged to be low, and the production node is marked as a non-key traceability node; If the traceability focus value of the production node is greater than or equal to the traceability focus threshold, the traceability importance of the production node is judged to be high; Based on any non-key tracing node, obtain the time node of the non-key tracing node that is closest to the current system time and marked as the problematic production node, obtain the interval between the time node and the current system time, and perform a ratio processing on the obtained interval with the total working time of the production node to obtain the normal time ratio of the production node, which is marked as XL; The obtained normal duration ratio XL of the non-key tracing node and the tracing key value XE are processed, and the formula The production stability coefficient YX is obtained, where b1 and b2 are both preset proportional coefficients, b1=1.311, b2=2.123; It should be noted that the traceability coefficient means that the production stability of non-key traceability nodes is evaluated by analyzing the length of time that no problem occurs at the non-key traceability nodes, as well as the number and degree of problems that occur. Based on any non-key traceability node, obtain the production stability coefficient of the non-key traceability node and compare it with the production stability coefficient threshold; If the production stability coefficient of the non-key traceability node is less than or equal to the production stability coefficient threshold, the stability of the non-key traceability node is judged to be low; If the production stability coefficient of a non-key traceability node is greater than the production stability coefficient threshold, the stability of the non-key traceability node is determined to be high, and the non-key traceability node is removed from the traceability process, and the non-key traceability node is no longer traced; It should be noted that the purpose of the steps is to reduce the production nodes that need to be traced in the traceability process, so as to reduce the traceability time and cost and improve the traceability efficiency; The technical solution of the embodiment of the present invention is: based on the traceability focus value, the traceability importance of the production node is judged, and the production node with low traceability importance is marked as a non-key traceability node, and the production stability of the non-key traceability node is evaluated. If the production stability is high, the non-key traceability node is removed from the traceability process to reduce the production nodes that need to be traced in the traceability process, reduce the traceability time and cost, and improve the traceability efficiency.

[0018] Embodiment 4: Figure 2 As shown, the epoxy board batch traceability management system for lithium battery packaging provided by the embodiment of the present invention includes: Barcode assignment module: In the production process of epoxy sheets for lithium battery packaging, a unique barcode is assigned to each production batch and the production information of each production node in the production process is recorded; Batch quality inspection module: Sampling quality inspection of the completed epoxy board production batches, obtaining the quality data of the samples and conducting detailed analysis to determine whether the production batches are qualified. The quality data includes the size and resistivity of the epoxy board samples; Batch tracing module: by scanning the barcode of the production batch, obtain the operation records at each production node of the epoxy board in the production batch, trace each production node according to the preset tracing order, find out the production node that causes the production batch to be unqualified, and mark it as the problem production node; Traceability strategy optimization module: obtains the traceability data of each production node within the monitoring period, the traceability data includes the number of times the production node is marked as a problem production node within the monitoring period, the total number of epoxy boards produced in the production batch corresponding to the problem production node, and the number of unqualified epoxy boards caused by the problem production node. By processing the traceability data, the traceability key value is obtained, and the production nodes are prioritized to obtain a traceability priority ranking table, which is compared with the preset traceability order to determine whether the traceability order of the problem production node needs to be changed. If necessary, the traceability order is changed; Traceability node optimization module: Determine the importance of node traceability based on the traceability key value, mark low-importance nodes as non-key traceability nodes, evaluate the production stability of non-key nodes, and if the stability is high, remove them from the traceability process.

[0019] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0020] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0021] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0022] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A batch traceability management method for epoxy boards used for lithium battery packaging, characterized in that: The following steps are involved: In the production process of epoxy boards for lithium battery packaging, barcodes are assigned to production batches of epoxy boards, and production information of each production node in the production process is recorded; Perform sampling quality inspection on a completed epoxy board production batch to obtain quality data of the epoxy board sample, the quality data including the size and resistivity of the epoxy board sample, analyze the quality data to determine whether the epoxy board sample is qualified, and determine whether the production batch is qualified based on the number of unqualified epoxy board samples. If unqualified, mark it as an unqualified batch, trace the unqualified batch, and obtain the problem production node; Acquire the traceability data of all production nodes within the monitoring period, wherein the traceability data includes the number of times the production node is marked as a problem production node within the monitoring period, the total number of epoxy boards produced in the production batch corresponding to the problem production node, and the number of unqualified epoxy boards caused by the problem production node, process the traceability data to obtain a traceability key value, prioritize the production nodes based on the traceability key value, and obtain a traceability priority ranking table; Based on the obtained traceability priority ranking table, compare it with the preset traceability order to obtain a ranking difference value, and judge whether the traceability order of the problem production node needs to be changed according to the obtained ranking difference value. If necessary, change the traceability order; The traceability importance of the production nodes is judged based on the traceability focus value, and the production nodes with low traceability importance are marked as non-key traceability nodes. The production stability of the non-key traceability nodes is evaluated. If the production stability is high, the non-key traceability nodes are removed from the traceability process.

2. The batch traceability management method of epoxy board for lithium battery packaging according to claim 1 is characterized in that: The specific method of obtaining the problematic production node is as follows: Based on the marked unqualified batches, by scanning the barcode of the production batch, the operation records at each production node of the epoxy board in the production batch are obtained, and each production node is traced according to the preset traceability sequence to find out the production node that causes the production batch to be unqualified and mark it as the problem production node.

3. The batch traceability management method of epoxy board for lithium battery packaging according to claim 2 is characterized in that: The specific method of obtaining the unqualified batch is as follows: Based on any production batch, the number of unqualified samples and the total number of epoxy board samples in the production batch are obtained, and the ratio of the two is processed to obtain the batch quality coefficient; comparing the obtained batch quality factor with a batch quality factor threshold; If the batch quality coefficient is less than or equal to the batch quality coefficient threshold, it means that there are few unqualified samples, and the production batch is marked as a qualified batch; If the batch quality coefficient is greater than the batch quality coefficient threshold, it means that there are many unqualified samples, and the production batch is marked as an unqualified batch.

4. The batch traceability management method of epoxy board for lithium battery packaging according to claim 3 is characterized in that: The specific method of obtaining the unqualified samples is as follows: Based on any epoxy board sample; Obtain the size of the epoxy board sample and compare it with the epoxy board size specification range; If the size of the epoxy board sample is not within the epoxy board size index range, the epoxy board sample size is judged to be unqualified, and a size unqualified signal is generated; Similarly, obtain the resistivity of the epoxy board sample and compare it with the epoxy board resistivity index range; If the resistivity of the epoxy board sample is not within the epoxy board resistivity index range, the insulation of the epoxy board sample is judged to be unqualified, and an insulation unqualified signal is generated; The generated signal is analyzed. If a size failure signal or an insulation failure signal is generated, the epoxy board sample is judged to be unqualified and the epoxy board sample is marked as an unqualified sample.

5. The batch traceability management method of epoxy board for lithium battery packaging according to claim 1 is characterized in that: The specific method of prioritizing production nodes is as follows: Based on any production node, obtain the number of times the production node is marked as a problem production node during the monitoring period, and compare it with the sum of the number of times all production nodes are marked as problem production nodes to obtain the problem number ratio, which is marked as EA; Obtain the number of unqualified epoxy boards caused by the problem production node in the corresponding production batch when the production node is marked as the problem production node, and perform ratio processing on it with the total number of epoxy boards produced in the production batch to obtain the batch impact ratio. Obtain the batch impact ratios of all production nodes marked as problem production nodes, sum and average them to obtain the problem degree ratio, which is marked as EB. The obtained problem frequency ratio EA and problem degree ratio EB are processed and the tracing focus value XE is obtained through the formula; According to the traceability key values, the production nodes are sorted in descending order of traceability priority, and priority numbers are marked for the production nodes in the sorting order to obtain a traceability priority sorting table.

6. The batch traceability management method of epoxy board for lithium battery packaging according to claim 1 is characterized in that: The specific method of determining whether the traceability order of the problematic production node needs to be changed is: Compare the obtained sorting difference value with the sorting difference threshold; If the sorting difference between the traceability priority sorting table and the preset traceability sorting table is less than or equal to the sorting difference threshold, it means that the difference between the two sorting tables is small. When unqualified batches appear again, the production nodes are still traced sequentially according to the preset traceability sorting table. If the sorting difference value between the traceability priority sorting table and the preset traceability sorting table is greater than the sorting difference threshold, it means that the difference between the two sorting tables is large. When unqualified batches appear again, the traceability order will be changed to the traceability priority sorting table, and the unqualified batches will be traced according to the traceability priority sorting table.

7. The batch traceability management method of epoxy board for lithium battery packaging according to claim 6 is characterized in that: The specific method for obtaining the sorting difference value is as follows: Mark the production nodes with preset serial numbers according to the preset traceability sequence and generate a preset traceability sorting table; Compare the traceability priority ranking table with the preset traceability ranking table, and based on any production node, compare the priority number of the production node with the preset number. If the priority number of the production node is different from the preset number, mark the production node as a sequence change node; Get the number of sequentially changed nodes among all production nodes, and compare it with the total number of all production nodes to get the change number ratio, marked as BG; Based on any sequence change node, obtain the difference between the priority sequence number of the sequence change node and the preset sequence number and take the absolute value, and compare it with the total number of all production nodes to obtain the change degree ratio of the sequence change node, sum up the change degree ratios of all sequence change nodes and take the average to obtain the change degree average, marked as BC; The obtained change number ratio BG and the change degree mean BC are processed, and the ranking difference value PC between the traceability priority ranking table and the preset traceability ranking table is calculated by the formula.

8. The batch traceability management method of epoxy board for lithium battery packaging according to claim 1 is characterized in that: The specific method of removing non-key traceability nodes from the traceability process is: Based on any production node, obtain the traceability key value of the production node and compare it with the traceability key threshold; If the traceability priority value of a production node is less than the traceability priority threshold, the traceability priority of the production node is judged to be low, and the production node is marked as a non-key traceability node; Based on any non-key traceability node, obtain the production stability coefficient of the non-key traceability node and compare it with the production stability coefficient threshold; If the production stability coefficient of a non-key traceability node is greater than the production stability coefficient threshold, the stability of the non-key traceability node is determined to be high, the non-key traceability node is removed from the traceability process, and the non-key traceability node is no longer traced.

9. The batch traceability management method of epoxy board for lithium battery packaging according to claim 8, characterized in that: The specific method of obtaining the production stability coefficient is: Based on any non-key tracing node, obtain the time node of the non-key tracing node that is closest to the current system time and marked as the problematic production node, obtain the interval between the time node and the current system time, and perform a ratio processing on the obtained interval with the total working time of the production node to obtain the normal time ratio of the production node, which is marked as XL; The obtained normal time ratio XL and the traceability key value XE are processed and the production stability coefficient YX is obtained through the formula.

10. The batch traceability management system for epoxy boards used for lithium battery packaging is characterized by: include: Barcode assignment module: In the production process of epoxy sheets for lithium battery packaging, a unique barcode is assigned to each production batch and the production information of each production node in the production process is recorded; Batch quality inspection module: Sampling quality inspection of the completed epoxy board production batches, obtaining the quality data of the samples and conducting detailed analysis to determine whether the production batches are qualified. The quality data includes the size and resistivity of the epoxy board samples; Batch tracing module: by scanning the barcode of the production batch, obtain the operation records at each production node of the epoxy board in the production batch, trace each production node according to the preset tracing order, find out the production node that causes the production batch to be unqualified, and mark it as the problem production node; Traceability strategy optimization module: obtains the traceability data of each production node within the monitoring period, the traceability data includes the number of times the production node is marked as a problem production node within the monitoring period, the total number of epoxy boards produced in the production batch corresponding to the problem production node, and the number of unqualified epoxy boards caused by the problem production node. By processing the traceability data, the traceability key value is obtained, and the production nodes are prioritized to obtain a traceability priority ranking table, which is compared with the preset traceability order to determine whether the traceability order of the problem production node needs to be changed. If necessary, the traceability order is changed; Traceability node optimization module: Determine the importance of node traceability based on the traceability key value, mark low-importance nodes as non-key traceability nodes, evaluate the production stability of non-key nodes, and if the stability is high, remove them from the traceability process.

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