Method and system for returning battery module

Abstract

Disclosed are a method and system for returning a battery module. The method comprises: in response to a module return event, a programmable logic controller controls a code scanning assembly to perform code scanning processing on a plurality of cells in a repaired battery module, so as to obtain cell information of the plurality of cells; a first production execution system of a production line acquires module information of the repaired battery module on the basis of the cell information; the first production execution system performs verification processing on the plurality of pieces of cell information on the basis of the module information to obtain a first verification result for the plurality of cells, and sends the module information to a second production execution system of a factory; the second production execution system performs state verification processing on the repaired battery module on the basis of the module information of the repaired battery module to obtain a second verification result for the repaired battery module; and the programmable logic controller determines, on the basis of the first verification result and the second verification result, whether to control return of the repaired battery module.

Description

Reflow method and system of battery module

[0001] Cross-reference to Related Applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202410829841.7, filed on June 25, 2024, entitled “Reflow method and system of battery module”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of production control, and particularly relates to a reflow method and system of battery module. BACKGROUND

[0004] At present, in the production line of the battery module, when the battery module appears to be defective (No Good, NG), it is necessary to exclude from the NG port, and then after the repair, the battery module is in a state of re-online, and then the battery module in the state of re-online is manually returned to the production line. In this way, manual intervention is required for the reflow of the battery module, thereby reducing the production efficiency of the production line and affecting the overall output.

[0005] SUMMARY

[0006] Therefore, the present disclosure provides at least a reflow method and system of battery module.

[0007] The technical scheme of the present disclosure is implemented as follows:

[0008] In a first aspect, the present disclosure provides a reflow method of battery module, the method comprising:

[0009] The programmable logic controller controls the code scanning component to perform code scanning processing on the plurality of battery monomers in the repaired battery module in response to a module reflow event of the repaired battery module, to obtain battery information of the plurality of battery monomers;

[0010] The first production execution system of the production line obtains module information of the repaired battery module based on the battery information;

[0011] The first production execution system performs verification processing on the plurality of battery information based on the module information of the repaired battery module, to obtain a first verification result for the plurality of battery monomers, and sends the module information of the repaired battery module to the second production execution system of the factory;

[0012] The second production execution system performs state verification processing on the repaired battery module based on the module information of the repaired battery module, to obtain a second verification result for the repaired battery module;

[0013] The programmable logic controller determines whether to control the reflow of the repaired battery module based on the first check result and the second check result.

[0014] In the embodiments of the present disclosure, the first production execution system can perform check processing on the plurality of battery information based on the module information of the repaired battery module to obtain the first check result for the plurality of battery monomers; the second production execution system can perform state check processing on the repaired battery module based on the module information of the repaired battery module to obtain the second check result for the repaired battery module; and finally, the programmable logic controller determines whether to control the reflow of the repaired battery module based on the first check result and the second check result. In this way, through two different production execution systems, check processing can be performed on the battery monomers and check processing can be performed on the repaired battery module, so that the reflow of the battery module can be automatically realized, thereby improving the production efficiency of the production line. Moreover, because the battery information of the battery monomers and the state of the battery module need to be checked, the situation that the battery module with incorrect battery information and / or state error is reflowed to the production line can be reduced, thereby improving the accuracy of the reflowed battery module.

[0015] In some embodiments, the first production execution system performs check processing on the plurality of battery information based on the module information of the repaired battery module to obtain the first check result for the plurality of battery monomers, including: the first production execution system obtains the original battery information of the battery monomers in the battery module before repair corresponding to the repaired battery module based on the module information; the first production execution system determines the first check result indicating that the battery information of the plurality of battery monomers is correct in the case that the original battery information is the same as the battery information; and the first production execution system determines the first check result indicating that the battery information of the plurality of battery monomers is incorrect in the case that the original battery information is different from the battery information.

[0016] In the embodiments of the present disclosure, by comparing the battery information of the battery monomers of the repaired battery module with the original battery information of the battery monomers of the battery module before repair, it can be determined whether the battery information of the battery monomers of the repaired battery module is correct. In this way, the situation that the repaired battery module with incorrect battery information of the battery monomers is reflowed to the production line, and the module information of the repaired battery module cannot be traced based on the incorrect battery information can be reduced, thereby improving the accuracy of the reflowed battery module.

[0017] In some embodiments, the second production execution system performs a status verification process on the repaired battery module based on the module information of the repaired battery module to obtain a second verification result for the repaired battery module, including: the second production execution system determines the current status information of the repaired battery module based on the module information of the repaired battery module; if the current status information of the repaired battery module is a normal state, the second production execution system determines a second verification result indicating that the state of the repaired battery module is correct; if the current status information of the repaired battery module is a rework state, the second production execution system determines a second verification result indicating that the state of the repaired battery module is incorrect.

[0018] In this embodiment, the second production execution system can determine the current status of the repaired battery module by using the module information of the repaired battery module. If the current status is normal, it indicates that the repaired battery module is in the correct state; if the current status is in a rework state, it indicates that the repaired battery module is in the wrong state. This reduces the number of battery modules currently in a rework state being returned to the production line, thereby improving the accuracy of returned battery modules.

[0019] In some embodiments, the method further includes: when the current status information of the repaired battery module is a rework status, the second production execution system determines the actual status of the repaired battery module; when the actual status indicates that the repaired battery module has been repaired, the second production execution system updates the current status information of the repaired battery module and sends the updated status information to the programmable logic controller; the programmable logic controller updates the tray information carried by the tray used to carry the repaired battery module based on the updated status information.

[0020] In this embodiment, when the current status information of the repaired battery module is in a rework state, the current status information of the repaired battery module can be updated by re-determining its actual status. This ensures that the current status information of the repaired battery module matches its actual status, allowing the second production execution system to monitor the actual status of the battery module in real time, thereby improving the accuracy of battery module status monitoring. Furthermore, the programmable logic controller can also update the current status information of the battery module in real time using the identification code on the tray, ensuring that the current status information of the battery modules in the tray is consistent with that of the second production execution system. This allows the actual status of the battery module to be determined directly from the identification code on the tray, improving the convenience of monitoring the battery module status.

[0021] In some embodiments, the method further includes: a first production execution system determining battery type information of multiple battery cells based on battery information; the first production execution system determining module type information of the repaired battery module based on module information; the first production execution system performing verification processing on the battery type information of multiple battery cells and the module type information of the repaired battery module based on the blueprint type information of the repaired battery module to obtain a third verification result; and a programmable logic controller determining whether to control the return of the repaired battery module based on the first verification result and the second verification result, including: the programmable logic controller controlling the return of the repaired battery module when the first verification result indicates that the battery information of multiple battery cells is correct, the second verification result indicates that the state of the repaired battery module is correct, and the third verification result indicates that the types corresponding to the battery type information, module type information, and blueprint type information are consistent.

[0022] In this embodiment of the disclosure, by comparing the blueprint type information of the repaired battery module with the battery type information of the individual battery cell and the module type information of the repaired battery module, the correctness of the battery type information of the individual battery cell and the module type information of the repaired battery module can be verified, thereby reducing the situation of returning the repaired battery module with the wrong type to the production line, and thus improving the accuracy of controlling the return of the repaired battery module.

[0023] In some embodiments, the first production execution system obtains module information of the repaired battery module based on battery information, including: when the first production execution system cannot obtain module information of the repaired battery module from the database based on battery information, the first production execution system sends battery information of multiple battery cells to the second production execution system; the second production execution system obtains module information of the repaired battery module based on battery information and sends module information of the repaired battery module to the first production execution system.

[0024] In this embodiment of the disclosure, if the first production execution system is unable to obtain the module information of the repaired battery module from the database based on battery information, the module information of the repaired battery module can be obtained through the second production execution system. This improves the success rate of obtaining the module information of the repaired battery module and reduces the number of instances where the module information of the repaired battery module cannot be obtained.

[0025] In some embodiments, the method further includes: if a replacement battery cell exists in the repaired battery module, the first production execution system obtains the replacement battery information of the replacement battery cell; the first production execution system binds the replacement battery information with the module information of the repaired battery module, and deletes the battery information of the abnormal battery cell bound to the module information of the repaired battery module from the database.

[0026] In this embodiment, the first production execution system can bind the replacement battery information with the module information of the repaired battery module and delete the battery information of the abnormal battery cell bound to the module information of the repaired battery module from the database. Because the first production execution system is the execution system of the production equipment, the module information of the repaired battery module is obtained preferentially through the first production execution system. Therefore, after the first production execution system updates the battery information of the battery cell, the module information of the repaired battery module can be obtained through the first production execution system without going through the second production execution system, thereby improving the efficiency of obtaining the module information of the repaired battery module.

[0027] Secondly, embodiments of this disclosure provide a battery module recirculation system, the battery module recirculation system comprising:

[0028] A programmable logic controller (PLC) is used to control a barcode scanning component to scan multiple battery cells in a repaired battery module in response to a module return event for the repaired battery module, thereby obtaining battery information for the multiple battery cells.

[0029] The first production execution system is used to obtain the module information of the repaired battery module based on the battery information; based on the module information of the repaired battery module, it performs verification processing on the information of multiple batteries to obtain the first verification result for multiple battery cells, and sends the module information of the repaired battery module to the second production execution system of the factory.

[0030] The second production execution system is used to perform status verification processing on the repaired battery module based on the module information of the repaired battery module, and obtain a second verification result for the repaired battery module.

[0031] The programmable logic controller is also used to determine whether to control the return flow of the repaired battery module based on the first verification result and the second verification result.

[0032] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the technical solutions of this disclosure. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the specification, serve to illustrate the technical solutions of this application.

[0034] Figure 1 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0035] Figure 2 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0036] Figure 3 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0037] Figure 4 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0038] Figure 5 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0039] Figure 6 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0040] Figure 7 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0041] Figure 8 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure;

[0042] Figure 9 is a schematic diagram of the composition structure of a battery module recirculation system provided in an embodiment of this disclosure. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application are further described in detail below with reference to the accompanying drawings and embodiments. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0045] The terms “first / second / third” are used merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that “first / second / third” may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application.

[0047] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0048] In this embodiment of the disclosure, the battery can be a single battery cell. A single battery cell refers to a basic unit capable of converting chemical energy into electrical energy, and can be used to manufacture battery modules or battery packs to supply power to electrical devices. A single battery cell can be a rechargeable battery, which is a battery cell that can be recharged after discharge to reactivate its active materials and continue to be used. A single battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this embodiment of the disclosure is not limited to these types.

[0049] In embodiments of this disclosure, the battery may also be a single physical module comprising one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar.

[0050] In related technologies, when NG modules appear on the production line, they need to be discharged from the NG port and then reworked. After obtaining battery modules ready for re-entry, a manual person scans the cell codes of the battery modules using a barcode scanner on the production line to obtain the module code. This module code is then manually entered into the Manufacturing Execution System (MES), allowing the MES system to obtain the module code. Finally, the manual person presses the return-to-line "OK" button, inputs the module code through the Human Machine Interface (HMI), and writes the module code into the tray, completing the return-to-line process.

[0051] It is evident that when dealing with the scenario of returned repaired battery modules being fed back to the production line, the relevant technologies require manual intervention in the return process, which leads to low production efficiency and affects the overall output of the production line.

[0052] To address the technical problems in the aforementioned related technologies, this disclosure provides a method for the return of battery modules. This method can be applied to scenarios where NG battery modules, after rework, need to be returned to the production line, thereby achieving automatic control of the return of battery modules to the production line and improving the production efficiency of the production line. As shown in Figure 1, this return method can be implemented through steps S101 to S105:

[0053] In step S101, in response to the module return event for the repaired battery module, the programmable logic controller controls the barcode scanning component to scan multiple battery cells in the repaired battery module to obtain battery information of the multiple battery cells.

[0054] Here, the Programmable Logic Controller (PLC) can be the controller corresponding to the return port. In this embodiment of the disclosure, the repaired battery module can enter the production line from the return port to continue production.

[0055] The repaired battery module can be a defective battery module produced on the production line, which has undergone corresponding rework and can be returned to the production line. It is understood that defective battery modules generated in the process flow of each stage of the production line can be semi-finished or finished battery modules; this disclosure does not limit this. For example, the reasons for the aforementioned defective battery module may include: module barcode scanning failure, low-voltage insulation test failure, and disordered module packing formula, etc.

[0056] A module return event is used to indicate the presence of a repaired battery module awaiting return in the return port. In this embodiment, a return button is provided in the return port. When the repaired battery module is in the return port and the return button is triggered, a module return event can be generated. In some embodiments, a position detection device is provided in the return port. When the position detection device detects the presence of a repaired battery module in the return port, it can send a bit signal to the programmable logic controller, thereby generating a module return event. This embodiment does not limit the scenario in which the module return event is generated.

[0057] The scanning component can be any device capable of scanning materials. For example, the scanning component can be a barcode scanner or a barcode camera. This disclosure does not limit the type of scanning component.

[0058] The multiple battery cells that are scanned can be some of the battery cells in the repaired battery module, or all of the battery cells in the repaired battery module.

[0059] In this embodiment of the disclosure, the battery information of multiple battery cells can be obtained by scanning the battery identification codes corresponding to the multiple battery cells in the repaired battery module.

[0060] In step S102, the first production execution system of the production line obtains the module information of the repaired battery module based on the battery information.

[0061] Here, the first production execution system can be a production execution system used to manage multiple production devices in a production line.

[0062] In this embodiment, the programmable logic controller (PLC) can control the scanning component to send the battery information of multiple battery cells obtained from scanning to the first production execution system. The first production execution system can then obtain the module information of the repaired battery module based on the battery information. It is understood that during the normal production process of the battery module, the first production execution system needs to bind the battery information of all battery cells in the battery module with the module information of the battery module, and store the binding relationships corresponding to each battery module in its own database. Therefore, when the first production execution system obtains the battery information of the battery cells in the repaired battery module, it can search for the same battery information in the database, and then obtain the module information of the repaired battery module based on the corresponding module information-battery information binding relationship.

[0063] In some embodiments, if the defect in the battery module during production is due to abnormal battery cells, the abnormal battery cells need to be replaced with normal battery cells during the battery module repair process. Normally, the programmable logic controller (PLC) sends the battery information of the normal battery cells to the first production execution system, causing the first production execution system to delete the battery information of the abnormal battery cells and bind the battery information of the normal battery cells to the module information of the repaired battery module. However, due to various reasons, the first production execution system may not perform the action of replacing the battery information of the abnormal battery cells. In this case, the repaired battery module contains battery cells whose battery information is not bound to the module information.

[0064] Therefore, when multiple battery cells undergoing barcode scanning are replacement battery cells, and the first production execution system does not perform the action of replacing the abnormal battery cell's battery information, the first production execution system cannot obtain the module information of the repaired battery module based on the battery information. In this case, the programmable logic controller can stop controlling the return of the repaired battery module, or request the second production execution system of the factory to obtain the module information of the repaired battery module.

[0065] In step S103, the first production execution system verifies the information of multiple batteries based on the module information of the repaired battery module, obtains a first verification result for the multiple battery cells, and sends the module information of the repaired battery module to the second production execution system of the factory.

[0066] Here, the verification process for battery information can be a correctness verification process, that is, determining whether the battery information corresponding to the multiple battery cells of the repaired battery module is correct.

[0067] In this embodiment of the disclosure, the first production execution system can obtain the battery information corresponding to the repaired battery module during normal production from the various binding relationships in the database through the module information of the repaired battery module. Then, it compares the battery information corresponding to the repaired battery module during normal production with the battery information corresponding to the repaired battery module after the repair process to determine whether the battery information corresponding to the multiple battery cells of the repaired battery module is correct.

[0068] It is understandable that the battery information of individual cells in the battery module should be consistent before and after repair. If there is a difference, it means that the repaired battery module is abnormal. In this case, the abnormal battery module should not be returned to the production line.

[0069] In this embodiment, the verification processing of battery information by the first production execution system and the sending of the repaired battery module information to the second production execution system can be performed simultaneously. This allows the first and second production execution systems to perform the two verification processes in parallel, improving the efficiency of the verification process. In other embodiments, the verification processing of battery information by the first production execution system and the sending of the repaired battery module information to the second production execution system can be performed sequentially. For example, the first production execution system first verifies the battery information and then sends the battery information to the second production execution system.

[0070] In some embodiments, the first production execution system can send battery information to the second production execution system through the communication interface of the second production execution system.

[0071] In step S104, the second production execution system performs a status verification process on the repaired battery module based on the module information of the repaired battery module, and obtains a second verification result for the repaired battery module.

[0072] Here, the second production execution system can be a production execution system used to manage the first production execution system. That is, the second production execution system can issue various control commands to the first production execution system, so that the second production execution system can manage various production equipment in the production line through the first production execution system.

[0073] Understandably, the second production execution system stores current status information representing the current state of any battery module on the production line. This current status indicates whether the battery module is in a rework or normal state. When a battery module is defective, its current status is rework; when a defective battery module becomes a qualified battery module after rework, its current status should be normal. In other words, after repairing a defective battery module, its current status information needs to be updated. However, in actual production, due to various reasons, the current status information may not be updated, resulting in the current status information of the repaired battery module still indicating that it is in a rework state, and battery modules in this state cannot be returned to the production line.

[0074] Therefore, in order to reduce the occurrence of erroneous battery modules being returned to the production line and improve the accuracy of returned battery modules, the second production execution system can, after receiving the module information of the repaired battery module, perform a status verification process on the repaired battery module using the module information of the repaired battery module to obtain a second verification result characterizing whether the current status of the repaired battery module is correct.

[0075] In step S105, the programmable logic controller determines whether to control the return flow of the repaired battery module based on the first verification result and the second verification result.

[0076] In this embodiment of the disclosure, the first production execution system and the second production execution system can send the first verification result and the second verification result to the programmable logic controller (PLC). When the first verification result indicates that the battery information corresponding to the multiple battery cells in the repaired battery module is correct, and the second verification result indicates that the current state of the repaired battery module is normal, the PLC can control the return flow of the repaired battery module.

[0077] In this embodiment, a first production execution system can verify multiple battery information based on the module information of the repaired battery module, obtaining a first verification result for multiple battery cells. A second production execution system can perform state verification on the repaired battery module based on the module information of the repaired battery module, obtaining a second verification result for the repaired battery module. Finally, the programmable logic controller (PLC) determines whether to control the return of the repaired battery module based on the first and second verification results. Thus, by using two different production execution systems, verification processing can be performed for individual battery cells and for the repaired battery module, respectively, enabling automatic return of battery modules and improving production line efficiency. Furthermore, because it is necessary to verify the battery information of individual battery cells and the state of the battery module, the return of battery modules with incorrect battery information and / or incorrect states to the production line can be reduced, thereby improving the accuracy of returned battery modules.

[0078] In some embodiments, as shown in FIG2, the step S103 above, "the first production execution system verifies the information of multiple battery cells based on the module information of the repaired battery module, and obtains a first verification result for the multiple battery cells", can be implemented through steps S201 to S203:

[0079] Step S201: The first production execution system obtains the original battery information of the individual battery cells in the battery module before repair, based on the module information of the repaired battery module.

[0080] Here, the repaired battery module and the original battery module can refer to the same battery module. During the production process, the battery module became a defective battery module for various reasons, so it needs to be repaired. Therefore, before the repair process, the battery module is the original battery module, and after the repair process, the battery module is the repaired battery module.

[0081] Understandably, during the production process of the battery module before repair, the first production execution system can bind the original battery information of multiple individual cells in the battery module before repair with the module information before repair, and store the binding relationship between the module information before repair and the original battery information of multiple individual cells in the battery module before repair in the database of the first production execution system. Because the module information of the battery module does not change during the repair process, after obtaining the module information of the repaired battery module, the first production execution system can retrieve the original battery information of the individual cells in the battery module before repair from multiple binding relationships through the module information of the repaired battery module.

[0082] In step S202, if the original battery information is the same as the battery information, the first production execution system determines a first verification result that indicates the correctness of the battery information of the plurality of battery cells.

[0083] Step S203: When the original battery information differs from the battery information, the first production execution system determines a first verification result that indicates an error in the battery information of the plurality of battery cells.

[0084] Understandably, when a battery module fails to meet production standards due to individual battery cell malfunctions, the repair process requires replacing these malfunctioning cells with healthy ones. Normally, the programmable logic controller (PLC) sends the battery information of the healthy cells to the first production execution system (MES), which then deletes the malfunctioning cell information and binds it to the repaired battery module's information. However, due to various reasons, the MES may fail to replace the malfunctioning cell information. In this case, the repaired battery module may contain battery cells whose information is not bound to the module's information, making it impossible to trace the repaired battery module's information based on these individual cells in subsequent processes. Therefore, in order to reduce the occurrence of the above situation, the first production execution system needs to determine whether the battery information obtained by scanning the battery cells is the same as the battery information of the battery cells in the battery module before repair. If they are the same, it means that the battery information of multiple battery cells in the repaired battery module is correct; if they are different, it means that the battery information of multiple battery cells in the repaired battery module is incorrect, and the repaired battery module cannot be returned to the production line.

[0085] In this embodiment, by comparing the battery information of the individual cells in the repaired battery module with the original battery information of the individual cells in the battery module before repair, it can be determined whether the battery information of the individual cells in the repaired battery module is correct. This reduces the likelihood of repaired battery modules with incorrect battery information being returned to the production line, thus preventing situations where the module information of the repaired battery module cannot be traced back due to the erroneous battery information, thereby improving the accuracy of returned battery modules.

[0086] In some embodiments, as shown in FIG3, step S104 above can be implemented by steps S301 to S303:

[0087] Step S301: The second production execution system determines the current status information of the repaired battery module based on the module information of the repaired battery module.

[0088] Here, the current status information is used to characterize the current state of the repaired battery module. This current status can indicate whether the repaired battery module is in a normal state or a return-to-work state.

[0089] In this embodiment of the disclosure, the second production execution system stores the correspondence between module information and current status information of each battery module. After obtaining the module information of the repaired battery module, the second production execution system can determine the current status information of the repaired battery module from multiple correspondences based on the module information of the repaired battery module.

[0090] In step S302, if the current status information of the repaired battery module is normal, the second production execution system determines a second verification result that indicates the correctness of the status of the repaired battery module.

[0091] In step S303, if the current status information of the repaired battery module is in the rework state, the second production execution system determines a second verification result that characterizes the state error of the repaired battery module.

[0092] Understandably, during normal battery module production, the battery module remains in a normal state until it malfunctions and becomes defective. At this point, the second production execution system updates the module's current status information to indicate a rework status after repair. Normally, after a defective battery module is repaired and becomes a qualified module, the second production execution system updates its current status information again to indicate a normal state. However, for various reasons, the second production execution system may fail to update the current status information of the repaired battery module after repairing the defective one. Therefore, it is necessary to determine whether the current status information of the repaired battery module accurately reflects its actual state.

[0093] In this embodiment, since the defective cause of the repaired battery module has been fixed, the actual state of the repaired battery module should be normal. If the current state information of the repaired battery module is normal, it means that the current state information of the repaired battery module has been updated. If the current state information of the repaired battery module is in the rework state, it means that the current state information of the repaired battery module has not been updated, and at this time the return flow of the repaired battery module can be stopped.

[0094] In this embodiment, the second production execution system can determine the current status of the repaired battery module by using the module information of the repaired battery module. If the current status is normal, it indicates that the repaired battery module is in the correct state; if the current status is in a rework state, it indicates that the repaired battery module is in the wrong state. This reduces the number of battery modules currently in a rework state being returned to the production line, thereby improving the accuracy of returned battery modules.

[0095] In some embodiments, as shown in FIG4, the above method can also be implemented through steps S401 to S403:

[0096] Step S401: If the current status information of the repaired battery module is a rework status, the second production execution system determines the actual status of the repaired battery module.

[0097] In this embodiment of the disclosure, when the current status information of the repaired battery module is in the rework status, it can be determined that the second production execution system did not update the current status information of the repaired battery module after the battery module was repaired. At this time, it is necessary to determine the actual status of the repaired battery module in order to determine whether the reason for the defect of the repaired battery module has been repaired.

[0098] In some embodiments, when the reason for the failure of the battery module is the presence of an appearance defect, the second production execution system can issue an image acquisition command to the programmable logic controller (PLC). In response to the image acquisition command, the PLC can control the image acquisition device at the return port to acquire image information of the battery module. After acquiring the image information, the image acquisition device can send the image information to the defect detection system. The defect detection system determines whether the appearance defect exists based on the image information of the battery module and sends the detection result to the second production execution system, thereby enabling the second production execution system to determine the actual state of the repaired battery module based on the detection result.

[0099] In some embodiments, when the reason for the failure of the battery module is that the module insulation withstand voltage test is NG, the second production execution system can obtain the secondary insulation withstand voltage test result for the battery module, and the second production execution system determines the actual state of the repaired battery module based on the secondary insulation withstand voltage test result.

[0100] In some embodiments, when the failure of the battery module is due to the failure of module barcode verification, the second production execution system can obtain the battery information obtained by scanning multiple battery cells of the repaired battery module through the barcode scanning component, as well as the transfer battery information transmitted during the assembly of the battery module, and then compare the battery information with the transfer battery information to determine the actual state of the repaired battery module based on the comparison result.

[0101] In step S402, when the actual state indicates that the repaired battery module has been repaired, the second production execution system updates the current state information of the repaired battery module and sends the updated current state information to the programmable logic controller.

[0102] In this embodiment of the disclosure, when the second production execution system determines that the actual state characterization of the repaired battery module has been repaired, the second production execution system can update the current state information from the repair state to the normal state, and then send the updated current state information to the programmable logic controller.

[0103] In some embodiments, when the reason for the non-conformity of the battery module is the presence of an appearance defect, the second production execution system determines, based on the detection results, that the repaired battery module does not have an appearance defect, and determines that the actual state of the repaired battery module indicates that the repaired battery module has been repaired.

[0104] In some embodiments, when the reason for the failure of the battery module is that the module insulation withstand voltage test is NG, the second production execution system determines that the module insulation withstand voltage test is OK based on the secondary insulation withstand voltage test result, and determines that the actual state of the repaired battery module indicates that the repaired battery module has been repaired.

[0105] In some embodiments, when the reason for the failure of the battery module is the failure of module barcode verification, the second production execution system determines that the battery information is consistent with the transmitted battery information based on the comparison results, and determines that the actual state of the repaired battery module indicates that the repaired battery module has been repaired.

[0106] In step S403, the programmable logic controller updates the tray information carried by the tray used to carry the repaired battery module based on the updated current state information.

[0107] Here, the tray information can be obtained by scanning the tray's identification code. In this embodiment of the disclosure, the repaired battery module is transferred to the return port via a tray. The tray has an identification code containing tray information, which includes various information about the repaired battery module, such as the current status information of the repaired battery module.

[0108] In this embodiment, after receiving the updated current status information sent by the second production execution system, the programmable logic controller (PLC) can first clear the original status information of the repaired battery module from the tray information carried by the tray, and then write the updated current status information into the tray's identification code. In this way, the current status information of the battery module can be updated in real time in the tray's identification code, thereby ensuring that the current status information of the battery module in the tray is consistent with that of the second production execution system.

[0109] In this embodiment of the disclosure, when the first verification result indicates that the battery information of multiple battery cells is correct and the updated current status information is written into the identification code of the tray, the programmable logic controller can control the return of the repaired battery module.

[0110] In this embodiment, when the current status information of the repaired battery module is in a rework state, the current status information of the repaired battery module can be updated by re-determining its actual status. This ensures that the current status information of the repaired battery module matches its actual status, allowing the second production execution system to monitor the actual status of the battery module in real time, thereby improving the accuracy of battery module status monitoring. Furthermore, the programmable logic controller can also update the current status information of the battery module in real time using the identification code on the tray, ensuring that the current status information of the battery modules in the tray is consistent with that of the second production execution system. This allows the actual status of the battery module to be determined directly from the identification code on the tray, improving the convenience of monitoring the battery module status.

[0111] In some embodiments, the above solution can also be implemented through steps S501 to S503, and step S105 can be implemented through step S504. It should be noted that steps S501 to S503 can be performed after step S102, after step S103, or after step S104.

[0112] The following example, taking steps S501 to S503 as being executed after step S104, explains the embodiment of steps S501 to S504 with reference to Figure 5:

[0113] Step S501: The first production execution system determines the battery type information of the plurality of battery cells based on the battery information.

[0114] Here, battery type information can characterize the type of battery cell. This type can represent at least one of the following: battery cell appearance type, size information, battery cell material, and packaging type. For example, the battery cell appearance type can indicate that the battery cell is a cylindrical cell or a prismatic cell; the battery cell material can be a positive electrode material, a negative electrode material, an electrolyte material, etc.

[0115] Step S502, the first production execution system determines the module type information of the repaired battery module based on the module information.

[0116] Here, the module type information of the battery module corresponds to the battery type information of the individual battery cells. That is to say, the module type of a battery module composed of battery cells of different battery types is also different. For example, when the individual battery cells are square battery cells, then the battery module composed of multiple square battery cells is a square battery module.

[0117] In step S503, the first production execution system verifies the battery type information of the multiple battery cells and the module type information of the repaired battery module based on the blueprint type information of the repaired battery module, and obtains a third verification result.

[0118] Here, the blueprint type information is used to characterize the type information determined during the design phase of the battery module. During the production process, the module type information of the battery module and the battery type information of the individual cells that make up the battery module need to be consistent with the blueprint type information.

[0119] In this embodiment of the disclosure, after the first production execution system obtains the third verification result, it can send the third verification result to the programmable logic controller, so that the programmable logic controller can determine whether to control the return of the repaired battery module based on the third verification result.

[0120] In step S504, the programmable logic controller controls the return flow of the repaired battery module when the first verification result indicates that the battery information of the plurality of battery cells is correct, the second verification result indicates that the state of the repaired battery module is correct, and the third verification result indicates that the types corresponding to the battery type information, module type information and blueprint type information are consistent.

[0121] In this embodiment, the reflow conditions for the repaired battery module are determined as follows: the battery information of multiple individual battery cells is correct, the state of the repaired battery module is correct and the battery type information of the individual battery cells is correct, and the module type information of the repaired battery module is consistent with the blueprint type information of the repaired battery module. Thus, by determining whether the repaired battery module can be reflowed based on multiple conditions, the accuracy of controlling the reflow of the repaired battery module can be improved.

[0122] In this embodiment of the disclosure, by comparing the blueprint type information of the repaired battery module with the battery type information of the individual battery cell and the module type information of the repaired battery module, the correctness of the battery type information of the individual battery cell and the module type information of the repaired battery module can be verified, thereby reducing the situation of returning the repaired battery module with the wrong type to the production line, and thus improving the accuracy of controlling the return of the repaired battery module.

[0123] In some embodiments, as shown in FIG6, step S102 above can be implemented by steps S601 and S602:

[0124] Step S601: If the first production execution system cannot obtain the module information of the repaired battery module from the database based on the battery information, it sends the battery information of the multiple battery cells to the second production execution system.

[0125] It is understandable that the reason for the battery module's failure could be the presence of abnormal battery cells within the battery module. In this case, the abnormal battery cells need to be replaced in the battery module. This is because both the first and second production execution systems store the binding relationship between the battery information of all battery cells before the battery module replacement and the module information of the battery module. Therefore, after replacing the abnormal battery cells, the battery information of the abnormal battery cells in the first and second production execution systems needs to be deleted and updated to the battery cells that are being replaced.

[0126] In actual production, because the second production execution system is a superior system to the first production execution system, the second production execution system will first replace the battery information of the abnormal battery cells stored in its own system. At this time, if the first production execution system has not replaced the battery information of the abnormal battery cells, and the barcode scanning component scans the replacement battery cell, the first production execution system cannot obtain the module information of the repaired battery module based on the battery information of the replacement battery cell. In this case, it is necessary to send the battery information of the replacement battery cell to the second production execution system in order to obtain the module information of the repaired battery module.

[0127] In step S602, the second production execution system obtains the module information of the repaired battery module based on the battery information, and sends the module information of the repaired battery module to the first production execution system.

[0128] Understandably, the second production execution system stores the binding relationship between the battery information of the individual cells in the repaired battery module and the module information of the repaired battery module. The individual cells in the repaired battery module include both the original battery cells and replacement battery cells. Therefore, based on the battery information, the second production execution system can obtain the module information of the repaired battery module from the binding relationship between the battery information of the individual cells and the module information of the repaired battery module.

[0129] In this embodiment of the disclosure, if the first production execution system is unable to obtain the module information of the repaired battery module from the database based on battery information, the module information of the repaired battery module can be obtained through the second production execution system. This improves the success rate of obtaining the module information of the repaired battery module and reduces the number of instances where the module information of the repaired battery module cannot be obtained.

[0130] In some embodiments, as shown in FIG7, the above method can also be implemented through steps S701 and S702:

[0131] Step S701: If there is a replacement battery cell in the repaired battery module, the first production execution system obtains the replacement battery information of the replacement battery cell.

[0132] In step S702, the first production execution system binds the replacement battery information with the module information of the repaired battery module, and deletes the battery information of the abnormal battery cell bound to the module information of the repaired battery module from the database.

[0133] Here, the abnormal battery cell can be a battery cell in the battery module that is faulty before repair. During the repair process, the abnormal battery cell in the battery module needs to be replaced with a replacement battery cell. The battery information of the abnormal battery cell in the first production execution system is then replaced with the replacement battery information of the replacement battery cell, thus binding the replacement battery information of the replacement battery cell to the module information of the repaired battery module.

[0134] In this embodiment, the first production execution system can bind the replacement battery information with the module information of the repaired battery module and delete the battery information of the abnormal battery cell bound to the module information of the repaired battery module from the database. Because the first production execution system is the execution system of the production equipment, the module information of the repaired battery module is obtained preferentially through the first production execution system. Therefore, after the first production execution system updates the battery information of the battery cell, the module information of the repaired battery module can be obtained through the first production execution system without going through the second production execution system, thereby improving the efficiency of obtaining the module information of the repaired battery module.

[0135] Figure 8 is a schematic diagram of the implementation process of a battery module recirculation method provided in an embodiment of this disclosure. As shown in Figure 8, the battery module recirculation method can be implemented through steps S801 to S805:

[0136] In step S801, in response to the trigger operation of the return button, the programmable logic controller controls the barcode scanning device to scan the cell codes of multiple cells in the battery module.

[0137] In this embodiment of the disclosure, if a battery module encounters issues such as module scanning failure, low-voltage insulation test failure, or disordered module packing formula, resulting in the battery module being removed from the production line, the NG battery module can be re-entered after being repaired by the production line workers. At this time, the production line workers need to use the NG trolley to transport the battery module that is ready to be re-entered to the module scanning NG return port and press the return button. The programmable logic controller can control the scanning device to scan the cell codes of multiple cells in the battery module.

[0138] In some embodiments, when a battery module enters the module scanning station, the station performs a comprehensive scanning inspection of the cells within the module. The detected cell codes (data obtained in real-time) are compared with the cell codes transmitted during module assembly (data transmitted via PLC and Radio Frequency Identification (RFID) during assembly after the cells are online). If a discrepancy is found, the module is deemed non-compliant (NG). At this point, the programmable logic controller (PLC) of the module scanning station writes the detection information into the module tray's RFID tag, which flows out from the NG outlet of the station. The NG module and its tray are then manually removed by an NG cart for rework.

[0139] In this embodiment, the module scanning station includes a protective cover, a base frame, an operation screen, a servo module, a 2D camera, a lifting and positioning system, and a conveyor line. The protective cover and base frame form the module scanning operation room, which houses the servo module, 2D camera, lifting and positioning system, and part of the conveyor line. Battery modules can enter the operation room via the conveyor line. The lifting and positioning system and the servo module can position the battery module at the scanning position. A technician can control the 2D camera to scan the battery module from the operation screen located outside the protective cover.

[0140] In some embodiments, when a battery module enters the insulation withstand voltage testing station, the station performs withstand voltage insulation tests on the cells within the module and between the cells and the casing. If the insulation is faulty, the module is classified as NG (Not Acceptable). At this time, the programmable logic controller (PLC) of the insulation withstand voltage testing station writes the test information into the module tray RFID tag, which then flows out from the NG outlet at the back of the station. The NG module and tray are then manually removed by an NG trolley for rework.

[0141] In some embodiments, when battery modules are placed into the box, the original formula may be disrupted or the conveyor line may become mismatched due to reasons such as glue scraping on the box and NG (not good) flow of the battery modules. In such cases, the battery modules need to be discharged first and then returned. When discharging the battery modules, the blockage modules can be manually selected to be discharged through the NG port of the conveyor line via the HMI touch screen of the module box conveyor line.

[0142] In step S802, the programmable logic controller sends the cell code to the device MES. The device MES verifies the cell code against the cell code and module code stored in the database of the device MES, and sends the verification result to the programmable logic controller.

[0143] In some embodiments, when there is a replacement cell in the battery module, the MES device needs to replace the cell code of the abnormal cell corresponding to the replacement cell in the database with the cell code of the replacement cell.

[0144] In some embodiments, the device MES also has a foolproof function, which can identify the blueprint type of the returned battery module. The device MES verifies the type of the module code and cell code with the current blueprint type to avoid the returned module product type being different.

[0145] In step S803, the equipment MES uploads the module code of the battery module to the factory MES.

[0146] In step S804, the factory MES determines the status of the battery module based on the module code and sends the status of the battery module to the programmable logic controller.

[0147] In step S805, if the verification result indicates that the cell code is correct and the battery module is in a normal state, the programmable logic controller controls the battery module to return current.

[0148] In some embodiments, if the programmable logic controller receives a normal state for the battery module, the data on the tray used to carry the battery module can be cleared and the normal state can be rewritten into the tray identification code of the tray.

[0149] Figure 9 is a schematic diagram of the composition structure of a battery module return system provided in an embodiment of this disclosure. As shown in Figure 9, the battery module return system 900 includes: a programmable logic controller 901, a first production execution system 902, and a second production execution system 903, wherein:

[0150] A programmable logic controller 901 is configured to respond to a module return event for a repaired battery module by controlling a barcode scanning component to scan multiple battery cells in the repaired battery module to obtain battery information of the multiple battery cells.

[0151] The first production execution system 902 is used to obtain module information of the repaired battery module based on the battery information; based on the module information of the repaired battery module, to perform verification processing on multiple battery information to obtain a first verification result for the multiple battery cells, and to send the module information of the repaired battery module to the second production execution system of the factory.

[0152] The second production execution system 903 is used to perform status verification processing on the repaired battery module based on the module information of the repaired battery module, and obtain a second verification result for the repaired battery module.

[0153] The programmable logic controller 901 is further configured to determine, based on the first verification result and the second verification result, whether to control the return flow of the repaired battery module.

[0154] In some embodiments, the first production execution system 902 is further configured to, based on the module information, obtain the original battery information of the battery cells in the battery module before repair corresponding to the repaired battery module; if the original battery information is the same as the battery information, determine a first verification result indicating that the battery information of the plurality of battery cells is correct; if the original battery information is different from the battery information, determine a first verification result indicating that the battery information of the plurality of battery cells is incorrect.

[0155] In some embodiments, the second production execution system 903 is further configured to determine the current status information of the repaired battery module based on the module information of the repaired battery module; if the current status information of the repaired battery module is a normal state, determine a second verification result indicating that the state of the repaired battery module is correct; if the current status information of the repaired battery module is a rework state, determine a second verification result indicating that the state of the repaired battery module is incorrect.

[0156] In some embodiments, the second production execution system 903 is further configured to determine the actual state of the repaired battery module when the current state information of the repaired battery module is a rework state; and update the current state information of the repaired battery module and send the updated current state information to the programmable logic controller when the actual state indicates that the repaired battery module has been repaired; the programmable logic controller 901 is further configured to update the tray information carried by the tray used to carry the repaired battery module based on the updated current state information.

[0157] In some embodiments, the first production execution system 902 is further configured to determine the battery type information of the plurality of battery cells based on the battery information; determine the module type information of the repaired battery module based on the module information; and perform verification processing on the battery type information of the plurality of battery cells and the module type information of the repaired battery module based on the blueprint type information of the repaired battery module to obtain a third verification result; the programmable logic controller 901 is further configured to control the return flow of the repaired battery module when the first verification result indicates that the battery information of the plurality of battery cells is correct, the second verification result indicates that the state of the repaired battery module is correct, and the third verification result indicates that the types corresponding to the battery type information, module type information, and blueprint type information are consistent.

[0158] In some embodiments, the first production execution system 902 is further configured to send the battery information of the plurality of battery cells to the second production execution system when the module information of the repaired battery module cannot be obtained from the database based on the battery information; the second production execution system 903 is further configured to obtain the module information of the repaired battery module based on the battery information and send the module information of the repaired battery module to the first production execution system.

[0159] In some embodiments, the first production execution system 902 is further configured to, if there is a replacement battery cell in the repaired battery module, obtain the replacement battery information of the replacement battery cell; bind the replacement battery information to the module information of the repaired battery module; and delete the battery information of the abnormal battery cell bound to the module information of the repaired battery module from the database.

[0160] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above steps / processes do not imply a sequential order of execution; the execution order of each step / process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above embodiments of this application are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0161] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0162] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A method for recirculating a battery module, the method comprising: In response to a module return event for a repaired battery module, the programmable logic controller controls a barcode scanning component to scan multiple battery cells in the repaired battery module to obtain battery information of the multiple battery cells. The first production execution system of the production line obtains the module information of the repaired battery module based on the battery information; Based on the module information of the repaired battery module, the first production execution system verifies multiple battery information to obtain a first verification result for the multiple battery cells, and sends the module information of the repaired battery module to the second production execution system of the factory. The second production execution system performs a status verification process on the repaired battery module based on the module information of the repaired battery module, and obtains a second verification result for the repaired battery module; The programmable logic controller determines whether to control the return flow of the repaired battery module based on the first verification result and the second verification result.

2. The battery module recirculation method according to claim 1, wherein, The first production execution system verifies multiple battery information based on the module information of the repaired battery module, and obtains a first verification result for the multiple battery cells, including: The first production execution system obtains the original battery information of the individual cells in the battery module before repair, based on the module information of the repaired battery module; If the original battery information is the same as the battery information, the first production execution system determines a first verification result indicating that the battery information of the plurality of battery cells is correct. When the original battery information differs from the battery information, the first production execution system determines a first verification result that indicates an error in the battery information of the plurality of battery cells.

3. The recirculation method for the battery module according to claim 1 or 2, wherein, The method further includes: The first production execution system binds the original battery information of multiple battery cells in the battery module before repair with the module information of the battery module before repair to obtain the binding relationship; Based on the module information of the repaired battery module, the first production execution system obtains the original battery information of the individual cells in the battery module before repair, corresponding to the repaired battery module, including: Based on the module information of the repaired battery module, the first production execution system obtains the original battery information of the individual battery cells in the battery module before repair from the binding relationship.

4. The recirculation method for a battery module according to any one of claims 1 to 3, wherein, The second production execution system performs a status verification process on the repaired battery module based on the module information of the repaired battery module, and obtains a second verification result for the repaired battery module, including: The second production execution system determines the current status information of the repaired battery module based on the module information of the repaired battery module; If the current status information of the repaired battery module is normal, the second production execution system determines a second verification result indicating that the status of the repaired battery module is correct. If the current status information of the repaired battery module is in the rework state, the second production execution system determines a second verification result that indicates a status error of the repaired battery module.

5. The battery module recirculation method according to claim 4, wherein, The battery module recirculation method further includes: If the current status information of the repaired battery module is a rework status, the second production execution system determines the actual status of the repaired battery module. When the actual state indicates that the repaired battery module has been repaired, the second production execution system updates the current state information of the repaired battery module and sends the updated current state information to the programmable logic controller. The programmable logic controller updates the tray information carried by the tray used to carry the repaired battery module based on the updated current state information.

6. The battery module recirculation method according to claim 5, wherein, Determining the actual state of the repaired battery module includes: The second production execution system sends an image acquisition command to the programmable logic controller; In response to the image acquisition command, the programmable logic controller controls the image acquisition device to acquire image information of the repaired battery module and sends the image information to the defect detection system; the defect detection system is used to determine the detection result based on the image information of the repaired battery module and send the detection result to the second production execution system; The second production execution system determines the actual state of the repaired battery module based on the detection results.

7. The battery module recirculation method according to claim 6, wherein, The method further includes at least one of the following: If the second production execution system determines, based on the detection results, that the repaired battery module has no appearance defects, the actual state of the repaired battery module indicates that the repaired battery module has been repaired. If the second production execution system determines that the module insulation withstand voltage test of the repaired battery module is qualified based on the insulation withstand voltage test result of the repaired battery module, the actual state of the repaired battery module indicates that the repaired battery module has been repaired. If the second production execution system determines that the battery information is consistent with the battery information transmitted during the assembly of the battery module, it determines that the actual state of the repaired battery module indicates that the repaired battery module has been repaired.

8. The recirculation method for a battery module according to any one of claims 1 to 7, wherein, The battery module recirculation method further includes: The first production execution system determines the battery type information of the plurality of battery cells based on the battery information; The first production execution system determines the module type information of the repaired battery module based on the module information; The first production execution system verifies the battery type information of the multiple battery cells and the module type information of the repaired battery module based on the blueprint type information of the repaired battery module, and obtains a third verification result. The programmable logic controller determines whether to control the return of the repaired battery module based on the first verification result and the second verification result, including: The programmable logic controller controls the return flow of the repaired battery module when the first verification result indicates that the battery information of the plurality of battery cells is correct, the second verification result indicates that the state of the repaired battery module is correct, and the third verification result indicates that the types corresponding to the battery type information, module type information, and blueprint type information are consistent.

9. The recirculation method for a battery module according to any one of claims 1 to 8, wherein, The first production execution system obtains module information of the repaired battery module based on the battery information, including: If the first production execution system is unable to obtain the module information of the repaired battery module from the database based on the battery information, it sends the battery information of the multiple battery cells to the second production execution system. The second production execution system obtains the module information of the repaired battery module based on the battery information, and sends the module information of the repaired battery module to the first production execution system.

10. The recirculation method for a battery module according to any one of claims 1 to 9, wherein, The battery module recirculation method further includes: If the first production execution system has a replacement battery cell in the repaired battery module, it acquires the replacement battery information of the replacement battery cell. The first production execution system binds the replacement battery information with the module information of the repaired battery module, and deletes the battery information of the abnormal battery cell that is bound to the module information of the repaired battery module from the database.

11. A battery module recirculation system, the battery module recirculation system comprising: A programmable logic controller (PLC) is used to control a barcode scanning component to scan multiple battery cells in the repaired battery module in response to a module return event for the repaired battery module, thereby obtaining battery information of the multiple battery cells. A first production execution system is used to obtain module information of the repaired battery module based on the battery information. Based on the module information of the repaired battery module, the information of multiple batteries is verified to obtain a first verification result for the multiple battery cells, and the module information of the repaired battery module is sent to the second production execution system of the factory. The second production execution system is used to perform status verification processing on the repaired battery module based on the module information of the repaired battery module, and obtain a second verification result for the repaired battery module. The programmable logic controller is further configured to determine, based on the first verification result and the second verification result, whether to control the recirculation of the repaired battery module.

12. The battery module recirculation system according to claim 11, wherein, The first production execution system is also used to obtain the original battery information of the battery cells in the battery module before repair, based on the module information of the repaired battery module; The first production execution system is further configured to determine a first verification result indicating that the battery information of the plurality of battery cells is correct when the original battery information is the same as the battery information. The first production execution system is further configured to determine a first verification result characterizing an error in the battery information of the plurality of battery cells when the original battery information differs from the battery information.

13. The battery module recirculation system according to claim 11 or 12, wherein, The first production execution system is used to bind the original battery information of multiple battery cells in the battery module before repair with the module information of the battery module before repair to obtain the binding relationship. The first production execution system is used to obtain, based on the module information of the repaired battery module, the original battery information of the individual cells in the battery module before repair, corresponding to the repaired battery module, including: The first production execution system is used to obtain the original battery information of the individual battery cells in the battery module before repair from the binding relationship based on the module information of the repaired battery module.

14. The recirculation system for the battery module according to any one of claims 11 to 13, wherein, The second production execution system is also used to determine the current status information of the repaired battery module based on the module information of the repaired battery module; The second production execution system is further configured to determine a second verification result indicating that the state of the repaired battery module is correct, provided that the current state information of the repaired battery module is in a normal state. The second production execution system is further configured to determine a second verification result characterizing a state error of the repaired battery module when the current state information of the repaired battery module is a rework state.

15. The battery module recirculation system according to claim 14, wherein, The second production execution system is also used to determine the actual state of the repaired battery module when the current state information of the repaired battery module is a rework state; The second production execution system is further configured to update the current status information of the repaired battery module and send the updated current status information to the programmable logic controller when the actual status indicates that the repaired battery module has been repaired. The programmable logic controller is used to update the tray information carried by the tray that carries the repaired battery module based on the updated current state information.

16. The battery module recirculation system according to claim 15, wherein, Determining the actual state of the repaired battery module includes: The second production execution system is used to issue image acquisition commands to the programmable logic controller; A programmable logic controller (PLC) is configured to respond to the image acquisition command, control an image acquisition device to acquire image information of the repaired battery module, and send the image information to a defect detection system; the defect detection system is configured to determine the detection result based on the image information of the repaired battery module and send the detection result to a second production execution system. The second production execution system is used to determine the actual state of the repaired battery module based on the detection results.

17. The battery module recirculation system according to claim 16, wherein, The method further includes at least one of the following: If the second production execution system determines, based on the detection results, that the repaired battery module has no appearance defects, the second production execution system is used to determine the actual state of the repaired battery module to indicate that the repaired battery module has been repaired. If the second production execution system determines that the insulation withstand voltage test of the repaired battery module is qualified based on the insulation withstand voltage test results of the repaired battery module, the second production execution system is used to determine the actual state of the repaired battery module to indicate that the repaired battery module has been repaired. If the second production execution system determines that the battery information is consistent with the battery information transmitted during the assembly of the battery module, the second production execution system is used to determine the actual state of the repaired battery module, indicating that the repaired battery module has been repaired.

18. The recirculation system for a battery module according to any one of claims 11 to 17, wherein, The first production execution system is also used to determine the battery type information of the plurality of battery cells based on the battery information; The first production execution system is further configured to determine the module type information of the repaired battery module based on the module information; The first production execution system is further configured to verify the battery type information of the plurality of battery cells and the module type information of the repaired battery module based on the blueprint type information of the repaired battery module, and obtain a third verification result. The programmable logic controller is further configured to, when the first verification result indicates that the battery information of the plurality of battery cells is correct, the second verification result indicates that the state of the repaired battery module is correct, and the third verification result indicates that the battery type information and module are correct, the programmable logic controller is ... further configure the programmable logic controller to, indicate that the battery information of the plurality of battery cells is correct, the second verification result indicates that the state of the repaired battery module is correct, and the third verification result indicates that the battery type information and module are correct, the programmable logic controller is configured to, indicate that the battery information of the plurality of battery cells is correct, the second verification result indicates that the state of the repaired battery module is correct, and the third verification result indicates that the battery type information and module are correct, the programmable logic controller If the types of the type information, the blueprint type information, and the type information are consistent, control the return of the repaired battery module.

19. The recirculation system for a battery module according to any one of claims 11 to 18, wherein, The first production execution system is also used to send the battery information of the multiple battery cells to the second production execution system when the module information of the repaired battery module cannot be obtained from the database based on the battery information. The second production execution system is further configured to obtain module information of the repaired battery module based on the battery information, and send the module information of the repaired battery module to the first production execution system.

20. The recirculation system for a battery module according to any one of claims 11 to 19, wherein, The first production execution system is also used to obtain the replacement battery information of the replacement battery cell when there is a replacement battery cell in the repaired battery module; The first production execution system is also used to bind the replacement battery information with the module information of the repaired battery module, and delete the battery information of the abnormal battery cell bound to the module information of the repaired battery module from the database.

Images