Battery pack production line control method and device, and electronic equipment

Abstract

Embodiments of the present application provide a battery pack production line control method and device, electronic equipment and computer readable storage medium, the method is for at least one battery pack process of the battery pack production line, obtains the first size parameter of at least one group of first battery products produced by the production equipment corresponding to the battery pack process;The first size parameter is obtained by the first acquisition system corresponding to the production equipment;The first size parameter of the at least one group of first battery products is input into the preset manufacturing process parameter model, and the manufacturing process parameter corresponding to the battery pack process is calculated;In the case where the manufacturing process parameter meets the first preset condition, the production equipment corresponding to the battery pack process is adjusted, the manufacturing capacity of the production line producing battery pack is considered comprehensively, and the battery pack process is closed loop controlled, to ensure the optimal state of the battery pack production line.

Description

Technical Field

[0001] This invention belongs to the field of batteries, and in particular relates to a method, apparatus, electronic device and computer-readable storage medium for controlling a battery pack production line. Background Technology

[0002] With the development of battery technology and the maturity of processes, the size requirements for battery pack products produced by battery pack production lines are becoming increasingly stringent.

[0003] Currently, the process of improving the dimensional quality of battery pack products by optimizing battery pack production lines involves comparing the dimensions of battery packs produced on the production line with those of standard battery packs, and then modifying the manufacturing processes on the production line based on the comparison results to improve the dimensional quality of the produced battery packs.

[0004] However, since the dimensions of a standard battery pack only represent its length, width, and height, comparing the dimensions of battery packs produced on the production line with those of a standard battery pack can only reflect the difference between the dimensions of the battery packs produced on the production line and the standard battery pack. Therefore, the production line adjustments are not accurate enough. Summary of the Invention

[0005] This invention provides a battery pack production line control method, apparatus, electronic device, and computer-readable storage medium to address the issue of inaccurate production line adjustments.

[0006] To solve the above-mentioned technical problems, the present invention is implemented as follows:

[0007] In a first aspect, the present invention provides a battery pack production line control method, the method comprising:

[0008] For at least one battery pack manufacturing process in a battery pack production line, first dimensional parameters of at least one set of first battery products produced by the production equipment corresponding to the battery pack manufacturing process are obtained; the first dimensional parameters are acquired by a first acquisition system corresponding to the production equipment.

[0009] Input the first size parameters of the at least one set of first battery products into a preset manufacturing process parameter model to calculate the manufacturing process parameters corresponding to the battery pack manufacturing process;

[0010] If the manufacturing process parameters meet the first preset conditions, the production equipment corresponding to the battery pack manufacturing process is adjusted.

[0011] In a second aspect, the present invention provides a battery pack manufacturing process production line control device, the device comprising:

[0012] The first dimension acquisition module is used to acquire first dimension parameters of at least one set of first battery products produced by the production equipment corresponding to at least one battery pack process in the battery pack production line; the first dimension parameters are acquired by a first acquisition system corresponding to the production equipment.

[0013] The first parameter determination module is used to input the first size parameters of the at least one set of first battery products into a preset manufacturing process parameter model, and calculate the manufacturing process parameters corresponding to the battery pack manufacturing process.

[0014] The adjustment module is used to adjust the production equipment corresponding to the battery pack manufacturing process when the manufacturing process parameters meet the first preset conditions.

[0015] Thirdly, the present invention provides an electronic device comprising: a processor, a memory, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the program to implement the above-described battery pack manufacturing process production line method.

[0016] Fourthly, the present invention provides a readable storage medium that, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to perform the above-described battery pack manufacturing process production line method.

[0017] In this embodiment of the invention, for at least one battery pack process in a battery pack production line, the first dimensional parameters of at least one set of first battery products produced by the production equipment corresponding to the battery pack process are obtained. These first dimensional parameters are acquired through a first acquisition system corresponding to the production equipment. The first dimensional parameters of the at least one set of first battery products are input into a preset manufacturing process parameter model to calculate the manufacturing process parameters corresponding to the battery pack process. If the manufacturing process parameters meet a first preset condition, the production equipment corresponding to the battery pack process is adjusted. This embodiment of the invention obtains manufacturing process parameters based on at least one set of first dimensional parameters produced by at least one battery pack process. Since the manufacturing process parameters reflect the production line's manufacturing capability for battery packs, the stability and process capability of the battery production line are monitored in real time using these parameters, and data changes are controlled. Furthermore, based on the first dimensional parameters output by each battery pack process, closed-loop control is performed on the battery pack process corresponding to the first dimensional parameters to ensure the optimal state of the battery pack production line. This allows for more accurate adjustment of the battery pack production line, ensuring that the battery packs subsequently produced based on this batch of incoming materials meet dimensional quality requirements. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of a battery pack production line control system provided in an embodiment of the present invention;

[0020] Figure 2 This is one of the step flowcharts of a battery pack production line control method provided in an embodiment of the present invention;

[0021] Figure 3 This is the second step flowchart of a battery pack production line control method provided in an embodiment of the present invention;

[0022] Figure 4 This is the third step in the flowchart of a battery pack production line control method provided in this embodiment of the invention;

[0023] Figure 5 This is a structural diagram of a battery pack production line control device provided in an embodiment of the present invention;

[0024] Figure 6 This is a structural diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figure 1 The diagram shows a schematic of the structure of a battery pack production line control system 10 provided in an embodiment of the present invention.

[0027] In this invention, the battery pack production line control system 10 is used to detect the working status of the battery pack production line and to control the production equipment of the battery pack production line.

[0028] The battery pack production line includes at least one production device, each of which performs at least one battery pack manufacturing process. After materials are transferred to the battery pack production line, the production line processes and transfers the materials based on the battery pack manufacturing process. The battery pack manufacturing process includes at least one step, which may be a processing step or a transfer step. When the battery pack manufacturing process includes multiple steps, the multiple steps are executed sequentially according to a preset order.

[0029] The processing steps are used to process materials and products, including incoming materials and / or intermediate batteries. Incoming materials are production data received at the input end of the battery pack production line, such as at least one of the following: battery cells, individual battery units, connectors, casings, battery management systems (BMS), and insulating materials. Intermediate battery products are products processed during the battery pack production line, such as products with stacked battery cells, products with BMS installed, or products with connectors installed. The transfer steps are used to transfer materials and target battery products output from the battery pack production line after completing all battery pack processes, facilitating the flow and storage of materials and target battery products within the battery pack production line. Therefore, when the production equipment performs the battery pack process, it can receive incoming materials or intermediate battery products at least through the transfer steps, or transfer intermediate battery products to the next production equipment at least through the transfer steps, or transfer target battery products at least through the transfer steps, or process the incoming materials or the intermediate battery products corresponding to the previous processing step through the current processing step to obtain the intermediate battery product corresponding to the current processing step. For example, the first production equipment on the battery pack production line performs the battery pack process corresponding to the first production equipment: receiving incoming materials; the second production equipment on the battery pack production line performs the battery pack process corresponding to the second production equipment: processing the incoming materials to obtain intermediate battery products, and transferring the intermediate battery products to the third production equipment; the third production equipment performs the battery pack process corresponding to the third production equipment: receiving the intermediate battery products transferred from the second production equipment, processing the intermediate battery products transferred from the second production equipment to obtain the intermediate battery products corresponding to the third production equipment; the fourth production equipment performs the battery pack process corresponding to the fourth production equipment: transferring the intermediate battery products processed by the third production equipment, processing the intermediate battery products processed by the third production equipment to obtain the intermediate battery products processed by the fourth production equipment, and transferring the intermediate battery products processed by the fourth production equipment to the fifth production equipment, and so on until the last production equipment on the battery pack production line outputs the target battery product.

[0030] The battery pack manufacturing process performed by each production device can be adjusted according to production needs, and this invention does not limit this.

[0031] The production equipment includes: automated conveying equipment: responsible for transferring materials and / or target battery products between various workstations on the production line; assembly equipment: including cell stacking machines and module assembly machines, used to assemble cells into battery packs; welding equipment: used for series and parallel connections between cells and for connecting wires; packaging and storage equipment: used for packaging and storing battery modules and battery packs. The specific form of the production equipment can be based on robots or servo modules. This invention does not limit the specific form of the production equipment.

[0032] In this invention, the battery pack production line control system 10 includes: an equipment management system MMS 11, a production management system MES 12, an online dimension detection system inline PCD 13, an automatic dimension detection system APMT 14, and a first controller 15.

[0033] The online dimensional inspection system comprises at least one of the following: an image acquisition system, an ultrasonic ranging acquisition system, a laser ranging acquisition system, a temperature detection system, and a quality inspection system. The online dimensional inspection system collects battery pack data including at least one of the following: quality, dimensions, temperature, identification code, and manufacturing process of the intermediate battery products. In other words, the online dimensional inspection system can collect data from any intermediate battery product after processing steps on the production equipment, obtaining battery pack data. Furthermore, the online dimensional inspection system can collect the quality, dimensions, temperature, and identification code of intermediate battery products corresponding to multiple battery pack manufacturing processes.

[0034] After collecting battery pack data, the online dimensional inspection system will provide the battery pack data to the production management system.

[0035] The automated dimensional inspection system comprises at least one of the following: an image acquisition system, an ultrasonic ranging acquisition system, a laser ranging acquisition system, a temperature detection system, and a quality inspection system. This system collects data on battery products output from the battery pack production line. The data collected may include at least one of the following: battery pack quality, dimensions, temperature, identification code, and manufacturing process. Therefore, the battery products collected by the automated dimensional inspection system are located after those collected by the online dimensional inspection system. Specifically, the automated dimensional inspection system can collect battery pack data from intermediate battery products at the end of the production line, such as the battery products processed in the final processing step or from the production equipment performing the final transfer step. After collecting the battery pack data, the automated dimensional inspection system provides this data to the production management system.

[0036] The identification code is the unique identifier of a battery product, used to distinguish between different specifications of battery products, as well as different battery products of the same specification. In this invention, the identification code can be set on the incoming material or added to the intermediate battery products through the production equipment.

[0037] In the examples of this invention, the specific form of the online dimension inspection system and the automatic dimension inspection system is not limited.

[0038] The production management system stores battery pack data collected by the online dimensional inspection system and the automatic dimensional inspection system. When the equipment management system needs battery pack data collected by the online dimensional inspection system and / or the automatic dimensional inspection system, the production management system provides the battery pack data collected by the online dimensional inspection system and / or the automatic dimensional inspection system to the equipment management system.

[0039] The production management system can aggregate battery pack data with the same identification code, enabling the equipment management system to obtain battery pack data collected by the online dimension inspection system and the automatic dimension inspection system corresponding to that identification code.

[0040] The equipment management system obtains battery pack data collected by the online dimension inspection system and the automatic dimension inspection system from the production management system, analyzes the battery pack data, and obtains analysis results. Based on the analysis results, the equipment management system also notifies the first controller to control the production equipment.

[0041] Figure 2 This is a flowchart illustrating the steps of a battery pack production line control method provided in an embodiment of the present invention, applied to an equipment management system, such as... Figure 2 As shown, the method may include:

[0042] Step 101: For at least one battery pack process in the battery pack production line, obtain the first size parameters of at least one set of first battery products produced by the production equipment corresponding to the battery pack process; the first size parameters are obtained by a first acquisition system corresponding to the production equipment.

[0043] In this invention, the first battery product is an intermediate battery product obtained after the production equipment performs the battery pack manufacturing process, and the first acquisition system is an online dimension detection system.

[0044] Because the online dimensional inspection system can collect data from any intermediate battery product after processing on the production equipment, thus obtaining battery pack data, the first acquisition system can collect the first dimensional parameters of the intermediate battery products produced by the production equipment in the battery pack manufacturing process. Simultaneously, it records the identification code of the first battery product and the battery pack manufacturing process corresponding to the first dimensional parameters. When collecting the first dimensional parameters of the first battery product, the first acquisition system can collect data from at least one set of first battery products produced by the same production equipment in the battery pack manufacturing process, or it can collect data from at least one set of first battery products produced by different production equipment performing different battery pack manufacturing processes.

[0045] The first data acquisition system sends the identification code of the first battery product, the first size parameters of the first battery product, and the battery pack manufacturing process corresponding to the first size parameters to the production management system, so that the production management system can store and forward them to the equipment management system. Therefore, the equipment management system can obtain the first size parameters of at least one set of first battery products produced by at least one production equipment corresponding to at least one battery pack manufacturing process.

[0046] The first dimensional parameter is the distance between two points in the first battery product, such as the length, width, and height of the first battery product; the distance between different electrodes on the first battery product; the width of an electrode on the first battery product; the height of an electrode on the first battery product; the depth of a groove on the first battery product; the height of a protrusion on the first battery product; the thickness of the insulating material; the mounting position of the connector on the first battery product; or the thickness and width of the solder joint on the first battery product. In this invention, the specific details of the first dimensional parameter are not limited.

[0047] Step 102: Input the first size parameters of the at least one set of first battery products into a preset manufacturing process parameter model, and calculate the manufacturing process parameters corresponding to the battery pack manufacturing process.

[0048] Manufacturing process parameters are used to reflect the production line's ability to manufacture battery packs. These parameters include the process capability index and the process operation capability index.

[0049] A process parameter model is created, including the formulas for the process capability index CPK and the process capability index CP. The formula for the process capability index CPK is as follows:

[0050] CPK=MIN(USL-μ,μ-LSL) / (3*σ);

[0051] The formula for the process capability index CP is:

[0052] CP = (USL - LSL) / (6 * σ);

[0053] Where USL is the upper limit of the object's specifications, LSL is the lower limit of the object's specifications, σ is the standard deviation of the overall data, and μ is the average value of the sampled data.

[0054] Since calculating the standard deviation of the overall data is costly, the value of σ is usually the standard deviation of the sampled data. Therefore, in this embodiment of the invention, the value of σ is the standard deviation of the sampled data.

[0055] In this invention, the upper and lower limits of the object's specifications are set as needed. The upper limit of the object's specifications is different for different manufacturing processes, and the lower limit of the object's specifications is different for different manufacturing processes.

[0056] The object's specifications include the acceptable range of distance between two points on the battery product. The upper limit of the object's specifications is the maximum value within this acceptable range, and the lower limit is the minimum value within the acceptable range. Since different manufacturing processes correspond to different upper and lower limits of the object's specifications, for the first dimensional parameter, the lower limit of the object's specifications is the lower limit of the acceptable range corresponding to the value of the first dimensional parameter, and the upper limit of the object's specifications is the upper limit of the acceptable range corresponding to the value of the first dimensional parameter.

[0057] In this invention, the upper and lower limits of the specifications corresponding to the first dimension parameter can be determined based on the first dimension parameter. Specifically, the production file sets the correspondence between each first dimension parameter and the battery pack manufacturing process, and each battery pack manufacturing process produces the acceptable range of the first dimension parameter. The production file can be configured in the battery pack production line control system. For example, after the production management system obtains the battery pack data, it can summarize the battery pack data into the production file.

[0058] The equipment management system can access production files, query battery pack data in the production files based on the identification code, and obtain the first size parameters of at least one set of first battery products produced by the production equipment corresponding to at least one battery pack process, as well as the USL and LSL corresponding to the first size parameters.

[0059] Meanwhile, the equipment management system uses at least one set of first size parameters of the first battery product as sampling data, calculates the average value μ of the sampling data and the standard deviation of the sampling data, and then uses the formulas for process capability index and process capability index to calculate the process capability index and process capability index corresponding to the sampling data.

[0060] Step 103: If the manufacturing process parameters meet the first preset conditions, adjust the control parameters of the production equipment corresponding to the battery pack manufacturing process; the control parameters include at least one of the following: operating position, operating time, and operating angle.

[0061] In this invention, a first preset condition is also pre-configured. For example, the first preset condition can be configured in the equipment management system, or it can be pre-configured in the production file. After the equipment management system calls the production file, it obtains the first preset condition based on the production file.

[0062] In this invention, in order to accurately adjust the production equipment, after obtaining the manufacturing process parameters, the equipment management system also needs to determine whether the manufacturing process parameters meet the first preset condition. If the manufacturing process parameters meet the first preset condition, it indicates that there is a need to adjust the production equipment, so that the production equipment can be adjusted accurately.

[0063] Optionally, adjusting the production equipment corresponding to the battery pack manufacturing process when the manufacturing process parameters meet the first preset conditions includes:

[0064] If the process capability index is less than a first preset threshold and the process capability index is greater than a second preset threshold, and the process capability index is greater than a third preset threshold, the production equipment corresponding to the battery pack manufacturing process shall be adjusted.

[0065] Optionally, if the process capability index is greater than or equal to a first preset threshold, the production equipment is not adjusted; if the process capability index is less than the first preset threshold, it is determined whether the process capability index is greater than a second preset threshold; the second preset threshold is less than the first preset threshold.

[0066] In this invention, if the process capability index is greater than or equal to a first preset threshold, it indicates that the battery pack production line produces products with good dimensions, and no adjustment to the production equipment is required. If the process capability index is less than the first preset threshold, it is necessary to further determine whether the process capability index is greater than a second preset threshold, and to comprehensively consider whether adjustment of the production equipment is necessary.

[0067] In this invention, the battery pack manufacturing process is described in the context of at least one processing step and at least one transport step. For other cases where the battery pack manufacturing process includes at least one step, please refer to this invention. Therefore, in this invention, when adjusting the production equipment, the control parameters of the production equipment can be adjusted. These control parameters include at least one of the following: operating position, operating time, and operating angle. The operating position is the position of the production equipment when acquiring materials, the position when placing materials at the workstation, or the position when processing materials. The operating time is the time it takes for the production equipment to acquire materials, the time it takes to place materials at the workstation, or the time it takes to process materials. The operating angle is the angle of the production equipment when acquiring materials, the angle when placing materials at the workstation, or the time it takes to process materials. For example, when adjusting the control parameters of an automated conveyor, the position of the automated conveyor when acquiring materials and the position of the production equipment when placing materials at the workstation can be changed. Similarly, when adjusting welding equipment, the position, time, and angle of the welding equipment during processing can be changed.

[0068] Optionally, step 103 involves adjusting the production equipment corresponding to the battery pack manufacturing process, including:

[0069] Step 1031: Obtain the standard value corresponding to the first size parameter based on the first size parameter.

[0070] The production file can set the acceptable dimensional range for each battery pack manufacturing process, and also set the standard value for each battery pack manufacturing process's dimensional output. That is, the generated file also configures the standard value for the battery product produced by the battery pack manufacturing process corresponding to the first dimensional parameter. Therefore, after obtaining the first dimensional parameter, the equipment management system can retrieve the corresponding standard value based on the generated file.

[0071] Step 1032: Subtract the standard value from the average value of the first size parameter corresponding to the first battery product to obtain the control compensation value.

[0072] The formula for the control compensation value is as follows:

[0073]

[0074] Among them, inline PCD i Let n be the first size parameter corresponding to the i-th first battery product in at least one group of first battery products, n be the number of at least one group of battery products, and a be a standard value.

[0075] Step 1033: Adjust the control parameters of the production equipment corresponding to the battery pack manufacturing process according to the control compensation value.

[0076] When adjusting the production equipment, the equipment management system determines the control compensation value for the production equipment based on the average value of at least one set of first dimension parameters and the standard value of at least one set of first dimension parameters, so that the dimensions of each first battery product output by the production equipment after adjustment according to the control compensation value are more in line with the qualified range.

[0077] Optionally, after step 1032, the method further includes:

[0078] Step 1034: Determine whether the control compensation value is within the preset compensation range.

[0079] After obtaining the control compensation value, it can be determined whether the control compensation value is within the preset compensation range. This avoids situations where the compensation capacity of the production equipment is limited, and even if the production equipment is compensated according to the control compensation value, the size requirements cannot be met. Alternatively, it can be that the control compensation value is too small, and even if the production equipment is compensated according to the control compensation value, the changes in the battery pack production line are not significant.

[0080] In this invention, when the production equipment is adjusted according to the first size parameters corresponding to multiple battery pack manufacturing processes, the compensation ranges for different battery pack manufacturing processes are different.

[0081] Step 1035: When the control compensation value is within the compensation range, proceed to the step of adjusting the production equipment corresponding to the battery pack manufacturing process according to the control compensation value.

[0082] When the control compensation value is within the compensation range, it indicates that the requirements of the qualified range can be met after compensation. Therefore, the next step is to adjust the production equipment corresponding to the battery pack process according to the control compensation value.

[0083] Optionally, when the control compensation value is within the compensation range, the equipment management system uses the production simulation function to simulate adjusting the production equipment corresponding to the battery pack process based on the control compensation value, and obtains the simulated manufacturing process parameters for producing the first battery product. If the simulated manufacturing process parameters for producing the first battery product meet the first preset conditions, the system proceeds to the step of adjusting the production equipment corresponding to the battery pack process according to the control compensation value.

[0084] In this invention, when the control compensation value is obtained, the result of adjusting the production equipment corresponding to the battery pack manufacturing process based on the control compensation value can be predicted by simulation. If the simulated production process parameters of the first battery product meet the first preset conditions, it indicates that the adjustment of the production equipment is effective and the production equipment can be adjusted to more accurately and intelligently adjust the battery pack production line.

[0085] Step 1036: When the control compensation value is not within the compensation range, no compensation is made to the production equipment.

[0086] When the control compensation value is not within the compensation range, it indicates that the control compensation value is too small. Even if the production equipment is compensated according to the control compensation value, the change in the battery pack production line is not significant. Therefore, the production equipment is not compensated.

[0087] Optionally, step 1033 includes:

[0088] Step 10331: The equipment management system sends the control compensation value to the first controller corresponding to the battery pack manufacturing process; the first controller is used to adjust the control parameters of the production equipment according to the control compensation value.

[0089] In this embodiment of the invention, the production equipment is equipped with a first controller, which is used to adjust the control parameters of the production equipment according to the control compensation value. Therefore, after the equipment management system obtains the control compensation value, it can send the compensation value to the first controller to notify the first controller to adjust the control parameters of the production equipment according to the compensation value.

[0090] Optionally, the first controller includes a first programmable logic controller (PLC).

[0091] In summary, this embodiment of the invention, for at least one battery pack process in a battery pack production line, obtains the first dimensional parameters of at least one set of first battery products produced by the production equipment corresponding to the battery pack process; the first dimensional parameters are acquired through a first acquisition system corresponding to the production equipment; the first dimensional parameters of the at least one set of first battery products are input into a preset manufacturing process parameter model to calculate the manufacturing process parameters corresponding to the battery pack process; and when the manufacturing process parameters meet a first preset condition, the production equipment corresponding to the battery pack process is adjusted. This embodiment of the invention obtains manufacturing process parameters based on at least one set of first dimensional parameters produced by at least one battery pack process. Since the manufacturing process parameters reflect the production line's manufacturing capability for battery packs, the stability and process capability of the battery production line can be monitored in real time through these parameters, and data changes can be controlled. Furthermore, based on the first dimensional parameters output by each battery pack process, closed-loop control is performed on the battery pack process corresponding to the first dimensional parameters, enabling more accurate adjustment of the battery pack production line and ensuring the optimal state of the battery pack production line, so that the battery packs subsequently produced based on this batch of incoming materials meet the dimensional quality requirements.

[0092] like Figure 3 In another embodiment of the present invention, before step 101, the method further includes:

[0093] Step 201: Obtain at least one set of second size parameters of the second battery product from the production management system; the second battery product is the product output from the battery pack production line, and the second size parameters are acquired by the second acquisition system corresponding to the end of the battery pack production line and stored in the production management system.

[0094] The second data acquisition system is an automatic dimension detection system. This system collects battery pack data from the intermediate battery products at the end of the battery pack production line. Therefore, the second battery product is the target battery product output after all processing steps have been completed on the battery pack production line.

[0095] Step 101 includes:

[0096] Step 1011: Obtain the first size parameter of the first battery product corresponding to the identification code of the second battery product; the identification code of the second battery product is the same as the identification code of the first battery product.

[0097] Since the battery pack production line produces a second battery product through at least one battery pack process, and each battery pack process outputs a first battery product, the second dimensional parameters of the second battery product correspond to at least one first dimensional parameter of the first battery product. The first dimensional parameters of the first battery product output from the battery pack process in the battery pack production line used to produce the second dimensional parameters can be determined based on the second dimensional parameters of the second battery product. Specifically, the correspondence between the second dimensional parameters and the battery pack processes that produce the second dimensional parameters can be configured in the production file. For example, the production file can be configured to specify that the battery pack processes corresponding to the second dimensional parameters of the second battery pack are battery pack process 1 and / or battery pack process 2, thereby determining the battery pack process that produces the second dimensional parameters based on the production file and the second dimensional parameters.

[0098] After determining the battery pack manufacturing process for the second dimensional parameters of the second battery product, the equipment management system obtains at least one set of identification codes corresponding to the second battery product from the battery pack production line control system. Based on the at least one set of identification codes, it determines the production equipment corresponding to the battery pack manufacturing process for the second dimensional parameters to produce the first dimensional parameters of the first battery product corresponding to that set of identification codes. The identification codes can be set on the incoming material and will not be damaged during the battery pack production process. During the battery pack production process, when different acquisition systems collect data, they can simultaneously collect the identification codes and the dimensional parameters of the battery pack, establishing a correspondence between the identification codes and the data collected by the acquisition systems. The acquisition systems can store the identification codes and the correspondence between the identification codes and the dimensional parameters collected by the acquisition systems in the battery pack production line control system. This allows the subsequent equipment management system to determine the identification codes based on the first or second dimensional parameters, or vice versa. Specifically, the acquisition system can store the identification codes and the correspondence between the identification codes and the data collected by the acquisition system in the battery pack production line control system, which can be stored in the production management system or the equipment management system.

[0099] In this invention, the second dimensional parameter refers to the distance between two points in the second battery product, such as the length, width, and height of the second battery product; the distance between different electrodes on the second battery product; the width of an electrode on the second battery product; the height of an electrode on the second battery product; the depth of a groove on the second battery product; the height of a protrusion on the second battery product; the thickness of the insulating material; or the mounting position of the connector of the first battery product. In this invention, the specific details of the second dimensional parameter are not limited.

[0100] In this invention example, after the target battery product is produced on the battery pack production line, the second dimensional parameters will be determined through First Article Inspection (FAI). First Article Inspection refers to the inspection of the first piece of the product, which aims to verify whether the production process meets the design requirements and to ensure that the first batch of products produced is of qualified quality.

[0101] Therefore, in this embodiment of the invention, in addition to the equipment management system obtaining the first dimension parameters collected by the first acquisition system sent by the production management system, the equipment management system can also query the first dimension parameters collected by the first acquisition system based on the second dimension parameters collected by the second acquisition system. The second dimension parameters determined through the first article inspection can be stored in the production management system and sent by the production management system to the equipment management system.

[0102] In another embodiment of the present invention, before step 101, the method further includes:

[0103] Step 202: Determine the offset parameter between the first acquisition system and the second acquisition system corresponding to the production equipment based on the first size parameter and the second size parameter.

[0104] Since the first dimension parameter is acquired through the first acquisition system and the second dimension parameter is acquired through the second acquisition system, the first and second dimension parameters are acquired through different acquisition systems. The values ​​from these different acquisition systems may differ, leading to a deviation between the first and second dimension parameters. For example, the focal lengths of the first and second acquisition systems may differ, causing a deviation between the first and second dimension parameters. Of course, other acquisition system values ​​can also cause different acquisition results when different systems acquire the same object; this invention does not limit the scope of such differences.

[0105] Step 203: If the offset parameter does not meet the second preset condition, compensate the first acquisition system.

[0106] To reduce or avoid deviations between the first and second dimension parameters, and to ensure that the two points on the first battery product corresponding to the first dimension parameter are the same as the two points on the second battery product corresponding to the second dimension parameter, it can be determined whether the offset parameter meets a second preset condition. This second preset condition can be input by the user through the system interface.

[0107] The second preset condition is the first value; when the offset parameter is greater than the first value, the offset parameter does not meet the second preset condition; when the offset parameter is less than the first value, the offset parameter meets the second preset condition; when the offset parameter does not meet the second preset condition, compensation can be made to the first acquisition system and / or the second acquisition system. Since the second acquisition system corresponds to the end of the battery pack production line, the second acquisition system can acquire the dimensions of batteries produced by different battery pack manufacturing processes. If the second acquisition system is compensated, it is necessary to modify the first acquisition system corresponding to multiple production equipment. Therefore, preferably, the first acquisition system is compensated.

[0108] Optionally, compensation may be applied to the first acquisition system, including:

[0109] Step 2031: Subtract the average value of the first size parameter corresponding to the first battery product from the average value of the second size parameter of the second battery product to obtain the offset compensation value.

[0110] Step 2032: Perform offset compensation on the first acquisition system according to the offset compensation value.

[0111] When it is determined that the first acquisition system needs to be adjusted, the average value of the first size parameter corresponding to the first battery product is subtracted from the average value of the second size parameter of the second battery product to obtain the offset compensation value. Based on the offset compensation value, the first acquisition system is offset compensated. Specifically, after receiving the offset compensation value, the first acquisition system will subtract the offset compensation value from the currently used template value to obtain a new template value. After obtaining the new template value, the first size parameter is reacquired, and then step 202 is executed.

[0112] The offset compensation value is obtained using the following formula:

[0113]

[0114] Where n is the number of battery products in at least one group of first battery products, APMT i For the second dimension parameter corresponding to the i-th second battery product in at least one set of second battery products, inline PCD i The first size parameter is the first size parameter corresponding to the i-th first battery product in at least one group of first battery products, and the number of battery products in at least one group of first battery products is the same as the number of battery products in at least one group of second battery products.

[0115] Optionally, prior to step 2031, the method further includes:

[0116] Step 301: Determine that the process capability index of the first size parameter is greater than the fourth preset threshold and the second size parameter is greater than the fourth preset threshold, and execute the step of subtracting the average value of the first size parameter corresponding to the first battery product from the average value of the second size parameter of the second battery product to obtain the offset compensation value.

[0117] When the process capability index of the first dimension parameter is greater than the fourth preset threshold and the process capability index of the second dimension parameter is greater than the fourth preset threshold, it indicates that both the first dimension parameter and the second dimension parameter have good process capability indices. Therefore, an offset compensation value can be obtained.

[0118] If at least one of the process capability indexes of the first dimension parameter and the second dimension parameter is less than or equal to the fourth preset threshold, it indicates that the process capability index is poor. An alarm signal is then sent to the second controller, which controls the battery pack production line to stop and activates the three-color alarm light to prompt manual offline re-evaluation and analysis.

[0119] Optionally, step 202 includes:

[0120] Step 2021: Subtract the second dimension parameter of the second battery product from the first dimension parameter of the first battery product to obtain multiple parameter differences.

[0121] Since the first size parameter is the size parameter of at least one set of first battery products, and the second size parameter is the size parameter of at least one set of second battery products, subtracting the second size parameter of the second battery product from the first size parameter corresponding to the first battery product will yield multiple parameter differences.

[0122] In the equipment management system, the first size parameters of at least one set of first battery products can be expressed in the form of a matrix. For example, first battery product 1, first battery product 2, and first battery product 3 constitute a set of first battery products. The first size parameter of first battery product 1 is 4, the first size parameter of first battery product 2 is 7, and the first size parameter of first battery product 3 is 10. Then, the first size parameters of a set of first battery products are represented by matrix 1(4,7,10).

[0123] Similarly, second battery product 1, second battery product 2, and second battery product 3 constitute a group of second battery products. The second dimension parameter of second battery product 1 is 1, the second dimension parameter of second battery product 2 is 2, and the second dimension parameter of second battery product 3 is 3. Then, the second dimension parameter of the group of second battery products is represented by matrix 2(1,2,3). The identification code of first battery product 1 is the same as the identification code of second battery product 1, the identification code of first battery product 2 is the same as the identification code of second battery product 2, and the identification code of first battery product 3 is the same as the identification code of second battery product 3.

[0124] In this invention, the subtraction involves subtracting the second dimension parameter of the battery pack with the same identification code from the first dimension parameter. For example, subtracting matrix 2 from matrix 1 yields matrix 3 (3,5,7), where each element represents a parameter difference.

[0125] Step 2022: Divide the sum of the differences of the multiple parameters by the tolerance parameter corresponding to the battery pack manufacturing process and the number of the first battery products to obtain the offset parameter.

[0126] To accurately determine whether there is a deviation between the first dimension parameter and the second dimension parameter, the sum of the differences of multiple parameters can be divided by the tolerance parameter corresponding to the battery pack manufacturing process and the number of first battery products to obtain the offset parameter. Based on the offset parameter, it can be determined whether there is a deviation between the first dimension parameter and the second dimension parameter.

[0127] In this embodiment of the invention, the production file includes tolerance parameters, the specific values ​​of which can be configured by the user in the production file as needed. In this embodiment, the tolerance parameters can range from 0.1 to 0.5. The offset parameter calculated for matrix 3 above is 15 ÷ 0.5 ÷ 3 = 10.

[0128] Specifically, the offset parameter is obtained using the following formula:

[0129]

[0130] Where n is the number of battery products in at least one group of first battery products, b is the tolerance parameter, and APMT i For at least one set of second battery products, the second dimension parameter corresponding to the i-th second battery product, inline PCD i The first dimension parameter is the first size parameter corresponding to the i-th first battery product in at least one group of first battery products. The number of battery products in at least one group of first battery products is the same as the number of battery products in at least one group of second battery products.

[0131] In another embodiment of the invention, the compensation range is determined based on the USL, LSL, and a second preset condition in the production file. If the result of multiplying the difference between USL and LSL by the offset parameter is greater than the control compensation value, the control compensation value is outside the compensation range. If the result of multiplying the difference between USL and LSL by the offset parameter is less than the control compensation value, the control compensation value is within the compensation range. By determining the specific value of the compensation range, it is possible to more accurately determine whether adjustments to the production equipment corresponding to the battery pack manufacturing process are needed based on the control compensation value.

[0132] In another embodiment of the present invention, when the process capability index is less than a second preset threshold, an alarm signal is sent to the second controller, the second controller controls the battery pack production line to stop and activates the three-color alarm light to prompt manual offline re-judgment and analysis.

[0133] In another embodiment of the present invention, when the process capability index is less than a third preset threshold, an alarm signal is sent to the second controller. The second controller controls the battery pack production line to stop and activates the three-color alarm light to prompt manual offline re-judgment and analysis.

[0134] In another embodiment of the present invention, when the offset parameter meets the second preset condition, the method includes:

[0135] When the second dimension parameter is greater than the upper limit of the object's specification in the production document, or less than the lower limit of the object's specification in the production document, the influencing factors are analyzed. These influencing factors include: incoming material dimensions and the positioning of the production equipment's transmission process. The most influential factors are selected from multiple factors to facilitate offline manual review and analysis.

[0136] If the second size parameter is greater than the lower limit of the object's specification in the production file but less than the upper limit of the object's specification in the production file, proceed to step 102.

[0137] In this invention, by judging the second dimension parameter, it is determined whether the final produced battery product meets the lower and upper limits of the specifications, and thus whether it is necessary to perform the step of determining the manufacturing process parameters. When the second dimension parameter is greater than the lower limit of the specifications of the object in the production document and less than the upper limit of the specifications of the object in the production document, it is indicated that the second dimension parameter is qualified and the production equipment can be adjusted.

[0138] In yet another embodiment of the present invention, no adjustments are made to the production equipment, including:

[0139] Generate and save logs;

[0140] The first acquisition device is notified to acquire at least one set of first-dimensional data again, and the second acquisition device is notified to acquire at least one set of second-dimensional data again.

[0141] In this embodiment of the invention, a log is recorded without adjusting the production equipment to facilitate subsequent querying of activity information of the equipment management system. The log includes all activity information of the equipment management system.

[0142] In another embodiment of the present invention, a control compensation value can be determined based on the second size parameter. Specifically, adjusting the production equipment corresponding to the battery pack manufacturing process includes:

[0143] Based on the second dimension parameter, obtain the standard value corresponding to the first dimension parameter;

[0144] The control compensation value is obtained by subtracting the standard value from the average value of the first size parameter corresponding to the second battery product.

[0145] Based on the control compensation value, the production equipment corresponding to the battery pack manufacturing process is adjusted. The method for determining the standard value can be referred to above and will not be repeated here.

[0146] Specifically, based on the second size parameter, the standard value corresponding to the first size parameter is obtained; the control compensation value is obtained by subtracting the standard value from the average value of the first size parameter corresponding to the second battery product, which can be achieved using the following formula:

[0147]

[0148] Wherein, APMTi is the second size parameter corresponding to the i-th second battery product in at least one group of second battery products, n is the number of battery products in at least one group of second battery products, and a is a standard value.

[0149] The following is based on Figure 4 Provide a specific example of this application.

[0150] S1, the battery pack production line produces at least one set of second battery products; the second battery products are the products output from the battery pack production line.

[0151] S2, the device management system obtains at least one set of second size parameters for the second battery product.

[0152] When the battery pack production line produces at least one set of second battery products, the second acquisition system will collect the second size parameters of at least one set of second battery products and send them to the production management equipment, which will then send them to the equipment management system.

[0153] S3, the equipment management system obtains the first dimension parameters of the first battery product based on the corresponding identification code of the second battery product.

[0154] When the equipment management system obtains the second dimension parameters of the second battery product, it can obtain the battery pack manufacturing process and the identification code of the second battery product according to the production documents, and obtain the first dimension parameters of the first battery product according to the corresponding identification code of the second battery product.

[0155] S4, whether the offset parameter between the first dimension parameter and the second dimension parameter satisfies the second preset condition.

[0156] S5, if the offset parameter between the first dimension parameter and the second dimension parameter meets the second preset condition, determine whether the second dimension parameter conforms to the specification. Specifically, determine whether the second dimension parameter is less than the lower limit of the specification or greater than the upper limit of the specification. If the second dimension parameter is greater than both the lower limit and the upper limit of the specification, the second dimension parameter conforms to the specification.

[0157] S6, the equipment management system determines the process capability index and operation capability index corresponding to the first dimensional parameter. The specific process for determining the process capability index and operation capability index can be found above and will not be repeated here.

[0158] S7, determine if the process capability index is greater than the first preset threshold;

[0159] S8, if the process capability index is less than the first preset threshold, determine that the process capability index is greater than the second preset threshold, wherein the first preset threshold is greater than the second preset threshold.

[0160] S9, if the process capability index is greater than the second preset threshold, determine that the process capability index is greater than the third preset threshold.

[0161] S10, the equipment management system calculates the control compensation value. The specific calculation process for the control compensation value is as described above and will not be repeated here.

[0162] S11, The equipment management system determines whether the control compensation value is within the compensation range;

[0163] S12, if the control compensation value is within the compensation range, the equipment management system will feed the control compensation value back to the first controller;

[0164] S13, the first controller compensates the production equipment according to the control compensation value;

[0165] S14, End.

[0166] The method further includes;

[0167] If the process capability index is greater than the first preset threshold, execute S15;

[0168] S15, if the process capability index is greater than the first preset threshold, no compensation is given, the equipment management system generates and saves the log, and proceeds to step S1.

[0169] The method further includes;

[0170] If the process capability index is less than the second preset threshold, perform the following steps:

[0171] S16, The equipment management system sends an alarm signal to the second controller;

[0172] S17, the second controller stops the battery pack production line and triggers a three-color alarm.

[0173] S18, Manual offline review and analysis;

[0174] S14, End.

[0175] The method further includes:

[0176] If the process capability index is less than the third preset threshold, perform the following steps:

[0177] S16, The equipment management system sends an alarm signal to the second controller.

[0178] The method further includes performing the following steps if the second dimension parameter does not conform to the specifications:

[0179] S19, Analyze the influencing factors when the second dimension parameter does not meet the specifications;

[0180] S20, screening of impact factors;

[0181] S18, Manual offline review and analysis.

[0182] The method further includes:

[0183] If the offset between the first dimension parameter and the second dimension parameter does not meet the second preset condition, the following steps are performed:

[0184] S21, determine that both the first size parameter and the second size parameter are greater than the fourth preset threshold;

[0185] S22, when both the first dimension parameter and the second dimension parameter are greater than the fourth preset threshold, the equipment management system calculates the offset compensation value;

[0186] S23, the equipment management system sends the offset compensation value to the first acquisition system, receives the feedback signal from the first acquisition system based on the offset compensation, and then proceeds to S2.

[0187] The method further includes:

[0188] If at least one of the first and second size parameters is less than a fourth preset threshold, the following steps are performed:

[0189] S24, the equipment management system sends an alarm signal to the second controller;

[0190] S14, End.

[0191] Exemplary device

[0192] Based on the same concept as the method embodiments of the present invention, the present invention also provides a battery pack production line control device 70, comprising:

[0193] The first dimension acquisition module 701 is used to acquire first dimension parameters of at least one set of first battery products produced by the production equipment corresponding to at least one battery pack process in the battery pack production line; the first dimension parameters are acquired by a first acquisition system corresponding to the production equipment.

[0194] The first parameter determination module 702 is used to input the first size parameters of the at least one set of first battery products into a preset manufacturing process parameter model, and calculate the manufacturing process parameters corresponding to the battery pack manufacturing process.

[0195] The adjustment module 703 is used to adjust the production equipment corresponding to the battery pack manufacturing process when the manufacturing process parameters meet the first preset conditions.

[0196] The device further includes:

[0197] The second size acquisition module is used to acquire at least one set of second size parameters of the second battery product from the production management system; the second battery product is the product output from the battery pack production line, and the second size parameters are acquired by the second acquisition system corresponding to the end of the battery pack production line and stored in the production management system;

[0198] The first acquisition module is used to acquire the first size parameter of the first battery product corresponding to the identification code of the second battery product; the identification code of the second battery product is the same as the identification code of the first battery product.

[0199] The device further includes:

[0200] The first determining module is used to determine the offset parameter between the first acquisition system and the second acquisition system corresponding to the production equipment based on the first size parameter and the second size parameter;

[0201] The first compensation module is used to compensate the first acquisition system when the offset parameter does not meet the second preset condition.

[0202] The first determining module includes:

[0203] The first determining submodule subtracts the second size parameter of the second battery product from the first size parameter corresponding to the first battery product to obtain multiple parameter differences;

[0204] The second determining submodule divides the sum of the differences of the multiple parameters by the tolerance parameter corresponding to the battery pack manufacturing process and the number of the first battery products to obtain the offset parameter.

[0205] The first compensation module includes:

[0206] The first compensation submodule is used to subtract the average value of the first size parameter corresponding to the first battery product from the average value of the second size parameter of the second battery product to obtain the offset compensation value.

[0207] The second compensation submodule is used to perform offset compensation on the first acquisition system based on the offset compensation value.

[0208] The adjustment module includes:

[0209] The first adjustment submodule is used to obtain the standard value corresponding to the first size parameter based on the first size parameter;

[0210] The second adjustment submodule is used to subtract the standard value from the average value of the first size parameter corresponding to the first battery product to obtain the control compensation value;

[0211] The third adjustment submodule is used to adjust the production equipment corresponding to the battery pack manufacturing process according to the control compensation value.

[0212] The device further includes:

[0213] The second compensation module is used to determine whether the control compensation value is within a preset compensation range;

[0214] The third compensation module is used to adjust the production equipment corresponding to the battery pack manufacturing process according to the control compensation value when the control compensation value is within the compensation range;

[0215] The fourth compensation module is used to prevent compensation of the production equipment when the control compensation value is not within the compensation range.

[0216] The third adjustment submodule is specifically used by the equipment management system to send the control compensation value to the first controller corresponding to the battery pack manufacturing process; the first controller is used to control the production equipment to make adjustments according to the compensation value.

[0217] The manufacturing process parameters include: process capability index and process capability index;

[0218] The adjustment module is specifically used to adjust the production equipment corresponding to the battery pack manufacturing process when the process capability index is less than a first preset threshold and the process capability index is greater than a second preset threshold, and the process capability index is greater than a third preset threshold.

[0219] The adjustment module also includes

[0220] The fourth adjustment module is used to prevent adjustment of the production equipment when the process capability index is greater than or equal to the first preset threshold.

[0221] The fifth adjustment module is used to determine whether the process capability index is greater than a second preset threshold when the process capability index is less than a first preset threshold.

[0222] The present invention also provides an electronic device, see [link to relevant documentation]. Figure 6 The system includes a processor 801, a memory 802, and a computer program 8021 stored in the memory and executable on the processor. When the processor executes the program, it implements the battery pack production line control method of the aforementioned embodiment.

[0223] The present invention also provides a readable storage medium, wherein when the instructions in the storage medium are executed by the processor of an electronic device, the electronic device is able to execute the battery pack manufacturing process production line control method of the foregoing embodiments.

[0224] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0225] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings herein. The required structure for constructing such systems is apparent from the above description. Furthermore, this invention is not directed to any particular programming language. It should be understood that the contents of the invention described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of the invention.

[0226] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0227] Similarly, it should be understood that, in order to simplify the invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0228] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0229] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the sorting device according to the present invention. The present invention can also be implemented as a device or apparatus program for performing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0230] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0231] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0232] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0233] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for a battery pack production line, characterized in that, The method for closed-loop control of the battery pack manufacturing process corresponding to the first size parameter includes: For at least one battery pack manufacturing process in a battery pack production line, first dimensional parameters of at least one set of first battery products produced by the production equipment corresponding to the battery pack manufacturing process are obtained; the first dimensional parameters are acquired by a first acquisition system corresponding to the production equipment; the first dimensional parameters are the distance between two points on the structure of the first battery product itself, and include at least: the length, width, height, distance between different electrodes, electrode width, electrode height, depth of each groove, height of each protrusion, thickness of insulating material, installation position of connector, thickness of solder joint, and width of solder joint; The first size parameters of the at least one set of first battery products are input into a preset manufacturing process parameter model to calculate the manufacturing process parameters corresponding to the battery pack manufacturing process; the manufacturing process parameters include: process capability index and process capability index; When the manufacturing process parameters meet the first preset conditions, the control parameters of the production equipment corresponding to the battery pack manufacturing process are adjusted; the control parameters include at least one of the following: operating position, operating time, and operating angle. If the process capability index is greater than or equal to a first preset threshold, the production equipment will not be adjusted. If the process capability index is less than the first preset threshold and the process capability index is greater than the second preset threshold, and the process capability index is greater than the third preset threshold, the production equipment corresponding to the battery pack manufacturing process shall be adjusted. When the process capability index is less than the second preset threshold, or when the process capability index is less than the third preset threshold, an alarm signal is issued to control the battery pack production line to stop.

2. The method according to claim 1, characterized in that, Before obtaining the first size parameters of at least one set of first battery products produced by the production equipment corresponding to the battery pack manufacturing process, the method further includes: Obtain at least one set of second size parameters for the second battery product from the production management system; the second battery product is the product output from the battery pack production line, and the second size parameters are acquired by a second acquisition system corresponding to the end of the battery pack production line and stored in the production management system; The step of obtaining the first dimensional parameters of at least one set of first battery products produced by the production equipment corresponding to the battery pack manufacturing process includes: Based on the identification code corresponding to the second battery product, the first size parameter of the first battery product corresponding to the identification code is obtained; the identification code corresponding to the second battery product is the same as the identification code corresponding to the first battery product.

3. The method according to claim 2, characterized in that, Before inputting the first size parameters of the at least one set of first battery products into a preset manufacturing process parameter model to calculate the manufacturing process parameters corresponding to the battery pack manufacturing process, the method further includes: Based on the first size parameter and the second size parameter, determine the offset parameter between the first acquisition system and the second acquisition system corresponding to the production equipment; If the offset parameter does not meet the second preset condition, the first acquisition system is compensated.

4. The method according to claim 3, characterized in that, The step of determining the offset parameter between the first acquisition system and the second acquisition system corresponding to the production equipment based on the first size parameter and the second size parameter includes: Subtract the second dimension parameter of the second battery product from the first dimension parameter of the first battery product to obtain multiple parameter differences; The offset parameter is obtained by summing the differences of the multiple parameters and dividing by the tolerance parameter corresponding to the battery pack manufacturing process and the number of the first battery products.

5. The method according to claim 3, characterized in that, Compensation is applied to the first acquisition system, including: The offset compensation value is obtained by subtracting the average value of the second size parameters of the second battery product from the average value of the first size parameters of the first battery product. The first acquisition system is offset compensated according to the offset compensation value.

6. The method according to claim 1, characterized in that, The adjustment of the control parameters of the production equipment corresponding to the battery pack manufacturing process includes: Based on the first size parameter, obtain the standard value corresponding to the first size parameter; The control compensation value is obtained by subtracting the standard value from the average value of the first size parameter corresponding to the first battery product. Based on the control compensation value, the control parameters of the production equipment corresponding to the battery pack manufacturing process are adjusted.

7. The method according to claim 6, characterized in that, After obtaining the control compensation value, the process further includes: Determine whether the control compensation value is within the preset compensation range; When the control compensation value is within the compensation range, the process proceeds to the step of adjusting the production equipment corresponding to the battery pack manufacturing process based on the control compensation value. When the control compensation value is not within the compensation range, no compensation is made to the production equipment.

8. The method according to claim 6, characterized in that, The step of adjusting the control parameters of the production equipment corresponding to the battery pack manufacturing process based on the control compensation value includes: The equipment management system sends the control compensation value to the first controller corresponding to the battery pack manufacturing process; the first controller is used to adjust the control parameters of the production equipment according to the control compensation value.

9. A battery pack manufacturing process control device, used for closed-loop control of the battery pack manufacturing process corresponding to a first dimensional parameter, characterized in that, The first size acquisition module is used to acquire the first size parameters of at least one set of first battery products produced by the production equipment corresponding to at least one battery pack process of the battery pack production line. The first dimension parameter is acquired by a first acquisition system corresponding to the production equipment; The first dimension parameter is the distance between two points on the structure of the first battery product itself, including at least: the length, width, height, distance between different electrodes, electrode width, electrode height, depth of each groove, height of each protrusion, thickness of insulating material, installation position of connector, thickness of solder joint, and width of solder joint; The first parameter determination module is used to input the first size parameters of the at least one set of first battery products into a preset manufacturing process parameter model, and calculate the manufacturing process parameters corresponding to the battery pack manufacturing process; the manufacturing process parameters include: process capability index and process capability index; The adjustment module is used to adjust the control parameters of the production equipment corresponding to the battery pack manufacturing process when the manufacturing process parameters meet the first preset conditions; the control parameters include at least one of the following: operating position, operating time, and operating angle. The adjustment module is specifically configured to: not adjust the production equipment when the process capability index is greater than or equal to a first preset threshold; adjust the production equipment corresponding to the battery pack process when the process capability index is less than the first preset threshold and the process capability index is greater than a second preset threshold, and the process capability index is greater than a third preset threshold; and issue an alarm signal to control the battery pack production line to stop when the process capability index is less than the second preset threshold, or the process capability index is less than the third preset threshold.

10. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the method described in any one of claims 1-8.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-8.

Images