Battery baking method and battery baking system

Abstract

The embodiment of the invention discloses a battery baking method and a battery baking system.The battery baking method comprises the steps that in the process that a battery to be baked is subjected to a baking process, baking is conducted on the battery from baking control equipment of the battery baking system; acquiring a process state corresponding to each process in the baking process and process data of each process; verifying and storing the process data of each process based on the process state corresponding to each process; after the baking process is completed, performing furnace discharge verification on the baked battery based on the overall process data; the discharging verification comprises one or more of data volume verification, process verification and performance verification; and sending a discharging verification result to the baking control equipment, so that the baking control equipment performs discharging treatment on the baked battery based on the discharging verification result. Therefore, abnormal batteries are prevented from flowing out, and the quality of the baked batteries is improved.

Description

Technical Field

[0001] The present disclosure relates to, but is not limited to, the technical field of battery production, and in particular, to a battery baking method and a battery baking system. Background Art

[0002] New energy batteries are increasingly widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also increasingly used in the energy storage field and so on.

[0003] In the related art, during the manufacturing process of a battery, in order to remove moisture, ensure welding conductivity, and age the battery, etc., the battery needs to be baked at a certain temperature. After the baking operation of the battery is completed by an oven, a certain amount of gas is extracted from the oven and introduced into a detection chamber, and a moisture tester is used to detect the current moisture value to obtain the water content of the battery. When the water content of the battery meets the standard, the battery is allowed to flow out.

[0004] However, the above baking method may cause many abnormal batteries to flow out, and it is difficult to guarantee the quality of the batteries. Summary of the Invention

[0005] In view of this, embodiments of the present disclosure at least provide a battery baking method and a battery baking system. In this way, abnormal batteries are prevented from flowing out, and the quality of the baked batteries is improved.

[0006] The technical solutions of the embodiments of the present disclosure are implemented as follows:

[0007] On the one hand, embodiments of the present disclosure provide a battery baking method, the battery baking method including: during the process of performing a baking process on a battery to be baked, obtaining, from a baking control device of the battery baking system, the process state corresponding to each process in the baking process and the process data of each process; verifying and storing the process data of each process based on the process state corresponding to each process; after the baking process is completed, performing an out-of-oven verification on the baked battery based on the overall process data; where the overall process data includes the process data of all processes of the baking process; the out-of-oven verification includes one or more of data volume verification, process verification, and performance verification; and sending the out-of-oven verification result to the baking control device, so that the baking control device performs an outbound process on the baked battery based on the out-of-oven verification result.

[0008] It can be understood that by verifying the process data of the corresponding process according to the process status, anomalies existing in different processes can be detected, improving the accuracy of verification; by storing the process data of the corresponding process according to the process status, classified storage of process data can be achieved, reducing the storage of useless data, reducing the storage pressure on the database corresponding to the host computer, and improving the database query efficiency; by adding furnace-out verification, abnormal batteries caused by equipment anomalies during the process can be avoided, and at the same time, it helps managers quickly locate which process the equipment anomaly occurs in, reducing the difficulty for managers to troubleshoot equipment anomalies and improving the quality of the baked batteries.

[0009] In some embodiments, obtaining the process status corresponding to each process in the baking process and the process data of each process from the baking control device of the battery baking system includes: polling and reading the status points of the baking control device; determining the process status corresponding to each process based on the values of the status points; and extracting the process data of each process from the storage points of the baking control device based on the process status corresponding to each process.

[0010] It can be understood that pre-agreeing on the status points and storage points helps the host computer obtain the process status and process data of each process, which is convenient for subsequent processing.

[0011] In some embodiments, verifying and storing the process data of each process based on the process status corresponding to each process includes: determining the set parameters corresponding to each process based on the corresponding relationship between each process and the set parameters; verifying the process data of each process based on the set parameters corresponding to each process; and storing the process data of each process according to the process status corresponding to each process when the process data of each process is verified successfully.

[0012] It can be understood that by verifying the process data of each process according to the set parameters corresponding to each process, different verifications can be performed on the process data of different processes, improving the accuracy of the process data of each process.

[0013] In some embodiments, verifying the process data of each process based on the set parameters corresponding to each process includes: verifying the correctness of the process data of each process based on the set parameters corresponding to each process; verifying the integrity of the process data of each process based on the set data volume in the set parameters corresponding to each process; determining that the process data verification of each process is successful when both the correctness and integrity of the process data of each process are verified successfully; and determining that the process data verification of each process fails when any one of the correctness and integrity of the process data of each process fails.

[0014] It can be understood that verifying the correctness and integrity of the process data of each process according to the set parameters corresponding to each process can determine whether there is an abnormality in each process from the perspectives of battery parameters and data volume; and then, when there is an abnormality, the management personnel can be reminded in time to conduct an inspection to avoid the outflow of abnormal batteries caused by abnormal processes.

[0015] In some embodiments, verifying the correctness of the process data of each process based on the set parameters corresponding to each process includes: verifying the temperature of each process based on the set temperature in the set parameters corresponding to each process to determine whether the temperature of each process is abnormal; and verifying the vacuum pressure of each process based on the set pressure in the set parameters corresponding to each process to determine whether the vacuum pressure of each process is abnormal.

[0016] It can be understood that verifying the process data of each process based on the set temperature and set pressure can determine whether there is an abnormality in the process data of each process; and then, when there is an abnormality, the abnormality can be processed in time.

[0017] In some embodiments, verifying the out-of-furnace of the baked battery based on the overall process data includes: verifying the total data volume of the overall process data; verifying the process time of the overall process data; verifying the process temperature of the overall process data; and verifying the vacuum degree of the overall process data.

[0018] It can be understood that verifying the total data volume, process time, process temperature, and vacuum degree of the overall process data can perform out-of-furnace verification on the baked battery from multiple different levels, improving the accuracy of out-of-furnace verification.

[0019] In some embodiments, the verification of the total amount of the overall process data includes: determining the target total amount of data that should be stored for the baking process and the set data loss amount; determining the difference between the target total amount of data and the total amount of the overall process data; in the case where the difference is less than the data loss amount, determining that the verification of the total amount of data is successful; in the case where the difference is greater than or equal to the data loss amount, determining that the verification of the total amount of data fails.

[0020] It can be understood that verifying the total amount of the overall process data according to the target total amount of data and the data loss amount takes into account the influence of different baking processes on the amount of data and also considers the instability of data during the transmission process.

[0021] In some embodiments, the determination of the target total amount of data that should be stored for the baking process includes: determining the process start time and the process end time from the overall process data; determining the actual process time based on the process start time and the process end time; and determining the target total amount of data based on the data storage frequency and the actual process time.

[0022] It can be understood that determining the target total amount of data that should be stored for the baking process according to the actual process time and the data storage frequency can determine the target total amount of data corresponding to different baking processes and achieve the adaptive adjustment of the target total amount of data.

[0023] In some embodiments, the verification of the process time of the overall process data includes: verifying the actual process time based on the set process time and the first tolerance time to determine whether the actual process time is abnormal; verifying the actual preheating time based on the set preheating time and the second tolerance time to determine whether the actual preheating time is abnormal; verifying the actual vacuum time based on the set vacuum time and the third tolerance time to determine whether the actual vacuum time is abnormal; the process time of the overall process data includes the actual process time, the actual preheating time, and the actual vacuum time.

[0024] It can be understood that verifying the actual process time, the actual preheating time, and the actual vacuum time can determine whether the process time of the overall process data is abnormal and improve the accuracy of the baking process in terms of time.

[0025] In some embodiments, verifying the actual process time based on the set process time and the first tolerance time to determine whether the actual process time is abnormal includes: when the set process time is less than or equal to the actual process time, and the sum of the set process time and the first tolerance time is greater than or equal to the actual process time, determining that the actual process time is not abnormal; when the set process time is greater than the actual process time, and / or the sum of the set process time and the first tolerance time is less than the actual process time, determining that the actual process time is abnormal.

[0026] It can be understood that verifying the actual process time according to the set process time and the first tolerance time can determine whether the total time of the baking process is abnormal.

[0027] In some embodiments, verifying the actual preheating time based on the set preheating time and the second tolerance time to determine whether the actual preheating time is abnormal includes: determining, from the overall process data, the first preheating time of the first piece of data and the second preheating time of the last piece of data when the process state is the preheating process; determining the actual preheating time based on the first preheating time and the second preheating time; when the set preheating time is less than or equal to the actual preheating time, and the sum of the set preheating time and the second tolerance time is greater than or equal to the actual preheating time, determining that the actual preheating time is not abnormal; when the set preheating time is greater than the actual preheating time, and / or the sum of the set preheating time and the second tolerance time is less than the actual preheating time, determining that the actual preheating time is abnormal.

[0028] It can be understood that verifying the actual preheating time according to the set preheating time and the second tolerance time can determine whether the time of the preheating process is abnormal.

[0029] In some embodiments, verifying the actual vacuum time based on the set vacuum time and the third tolerance time to determine whether the actual vacuum time is abnormal includes: when the set vacuum time is less than or equal to the actual vacuum time, and the sum of the set vacuum time and the third tolerance time is greater than or equal to the actual vacuum time, determining that the actual vacuum time is not abnormal; when the set vacuum time is greater than the actual vacuum time, and / or the sum of the set vacuum time and the third tolerance time is less than the actual vacuum time, determining that the actual vacuum time is abnormal.

[0030] It can be understood that verifying the actual vacuum time according to the set vacuum time and the third tolerance time can determine whether the time of the vacuum process is abnormal.

[0031] In some embodiments, verifying the vacuum degree of the overall process data includes: determining the maximum target vacuum degree and the minimum target vacuum degree from the overall process data; and determining that the vacuum degree verification is successful when the maximum target vacuum degree and the minimum target vacuum degree meet the set vacuum degree.

[0032] It can be understood that verifying the vacuum degree of the overall process data according to the set vacuum degree, the maximum target vacuum degree and the minimum target vacuum degree can determine whether there is an abnormality in the vacuum degree of the baking process.

[0033] In some embodiments, determining the maximum target vacuum degree and the minimum target vacuum degree from the overall process data includes: determining the process data of the vacuum process in the baking process from the overall process data; dividing the process data of the vacuum process according to the number of breaths to obtain the process data for each breath; determining the maximum vacuum degree and the minimum vacuum degree of the process data for each breath; comparing the maximum vacuum degrees for each breath to obtain the maximum target vacuum degree; and comparing the minimum vacuum degrees for each breath to obtain the minimum target vacuum degree.

[0034] It can be understood that determining the maximum target vacuum degree and the minimum target vacuum degree according to the maximum vacuum degree and the minimum vacuum degree for each breath comprehensively considers the changes in the vacuum degree during the vacuum process, and thus can improve the accuracy of the vacuum degree verification result.

[0035] In some embodiments, the battery baking method further includes: in response to a process start request for the battery triggered by the baking control device, obtaining the identifier of the carrier carrying the battery and the identifier of the battery from the baking control device; verifying the identifier of the carrier and the identifier of the battery to determine whether there is an abnormality in the identifier of the carrier and the identifier of the battery; and sending a confirmation instruction for the process start request to the baking control device when there is no abnormality in the identifier of the carrier and the identifier of the battery.

[0036] It can be understood that verifying the carrier identifier and the battery identifier before the baking process starts can reduce additional overhead through pre-verification and improve the accuracy of the baking process.

[0037] On the one hand, an embodiment of the present disclosure provides a battery baking method, which is applied to a baking control device in the battery baking system. The battery baking method includes: during the process of performing a baking process on a battery to be baked, setting a process state corresponding to each process in the baking process, and collecting process data of each process; writing the process state corresponding to each process and the process data of each process into a storage location for interaction with the host computer, so that the host computer checks and stores the process data of each process based on the process state corresponding to each process; after receiving an out-of-oven verification result sent by the host computer for the baked battery, performing an outbound process on the baked battery based on the out-of-oven verification result.

[0038] In some embodiments, the battery baking method further includes: triggering a process start request for the battery when it is detected that the battery reaches a trigger position; performing a baking process on the battery after receiving a confirmation instruction sent by the host computer in the battery baking system for the process start request.

[0039] On the other hand, an embodiment of the present disclosure provides a battery baking system, which includes a baking control device and a host computer; the baking control device is configured to determine a process state corresponding to each process in the baking process and the process data of each process during the process of performing a baking process on a battery to be baked; write the process state corresponding to each process and the process data of each process into a storage location for interaction with the host computer; perform an outbound process on the baked battery based on an out-of-oven verification result sent by the host computer; the host computer is configured to obtain the process state corresponding to each process and the process data of each process from the storage location in the baking control device; check and store the process data of each process based on the process state corresponding to each process; perform an out-of-oven verification on the baked battery based on overall process data after the baking process is completed; the overall process data includes the process data of all processes in the baking process; the out-of-oven verification includes one or more of data volume verification, process verification, and performance verification.

[0040] In some embodiments, the battery baking system includes a gripping device and a baking chamber; the gripping device is used to grip the battery and transfer it to the baking chamber; the baking chamber is used to perform a baking process on the battery.

[0041] In some embodiments, the baking cavity includes multiple layers of core storage components, and each layer of core storage components is provided with a temperature sensor; the baking cavity is provided with at least one pressure sensor; the temperature sensor is used to detect the temperature of the battery in each layer of core storage components in each process; the pressure sensor is used to detect the pressure of the battery in the baking cavity in each process.

[0042] In some embodiments, the battery baking system includes a carrier; the carrier is used to transfer the battery to a position for triggering a process start request for the battery.

[0043] In the embodiments of the present disclosure, verifying the process data of the corresponding process according to the process state can detect abnormalities existing in different processes and improve the accuracy of verification; storing the process data of the corresponding process according to the process state can achieve classified storage of process data, reduce the storage of useless data, reduce the storage pressure on the database corresponding to the host computer, and improve the database query efficiency; by adding out-of-furnace verification, it is possible to avoid the outflow of abnormal batteries caused by equipment abnormalities during the process, and at the same time help the management personnel quickly locate which process has equipment abnormalities, reduce the difficulty for the management personnel to investigate equipment abnormalities, and improve the quality of the baked battery.

[0044] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the technical solution of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings herein are incorporated into the specification and form a part of this specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to explain the technical solution of the present disclosure.

[0046] Figure 1 Schematic diagram of the implementation process of a battery baking method provided by an embodiment of the present disclosure Figure 1 ;

[0047] Figure 2 Schematic diagram of the implementation process of a battery baking method provided by an embodiment of the present disclosure Figure 2 ;

[0048] Figure 3 Schematic diagram of the implementation process of a battery baking method provided by an embodiment of the present disclosure Figure 3 ;

[0049] Figure 4 Schematic diagram of the implementation of a process start process provided by an embodiment of the present disclosure;

[0050] Figure 5 Schematic diagram of the implementation of a process data verification process provided by an embodiment of the present disclosure;

[0051] Figure 6 Schematic diagram for realizing the furnace-out inspection of a process provided by an embodiment of the present disclosure;

[0052] Figure 7 Schematic diagram of the implementation process for judging whether the total amount of overall process data meets the standard provided by an embodiment of the present disclosure;

[0053] Figure 8 Schematic diagram of the implementation process for judging whether the process time of the overall process data meets the standard provided by an embodiment of the present disclosure;

[0054] Figure 9 Schematic diagram of the implementation process for judging whether the degree of vacuum of the overall process data meets the standard provided by an embodiment of the present disclosure;

[0055] Figure 10 Schematic diagram of the composition structure of a battery baking system provided by an embodiment of the present disclosure. Detailed implementation manners

[0056] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the technical solutions of the present disclosure will be further elaborated in detail below with reference to the accompanying drawings and embodiments. The described embodiments should not be regarded as limitations on the present disclosure. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0057] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0058] The terms "first / second / third" involved are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first / second / third" can be interchanged with a specific order or sequence when permitted, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs. The terms used herein are only for the purpose of describing the present disclosure and are not intended to limit the present disclosure.

[0060] To better understand the battery baking method provided by the embodiments of the present disclosure, the solutions in the related art will be described below.

[0061] At present, new energy batteries are increasingly widely used in life and industry. New energy batteries are not only applied to energy storage power systems such as hydraulic, thermal, wind, and solar power stations, but also widely used in electric transportation means such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing. In the embodiments of the present disclosure, the battery may be a battery cell. A battery cell refers to the basic unit that can realize the mutual conversion between chemical energy and electrical energy, and can be used to make a battery module or a battery pack, so as to supply power to an electrical device. The battery cell may be a secondary battery, which refers to a battery cell that can be activated by charging after discharging to continue use. The battery cell may be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium-metal battery, a sodium-metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present disclosure do not limit this.

[0062] In the embodiments of the present disclosure, the battery may also be a single physical module including 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 in a hybrid connection through a busbar component.

[0063] The embodiments of the present disclosure provide a battery baking method, and this battery baking method can be executed by the host computer of the battery baking system. Figure 1 As shown in Figure 1 the schematic flowchart of the implementation process of a battery baking method provided by the embodiments of the present disclosure, as

[0064] Step 101: During the process of baking the battery to be baked, obtain the process state corresponding to each process in the baking process and the process data of each process from the baking control device of the battery baking system.

[0065] The battery baking system is used to realize the baking of the battery. In a feasible implementation manner, the battery baking system may include a baking control device, a host computer, and a baking cavity; wherein, the baking control device is used to control the baking process of the battery, and the host computer is used to verify and store the process data generated during the baking of the battery. For example, the host computer may refer to a PC; the baking control device may be any one of a programmable logic controller (PLC), a single-chip microcomputer, a middle computer, and a host computer. The baking cavity is used to accommodate the battery and provide an environment for baking the battery.

[0066] The baking process is used to remove the moisture inside the battery to improve the charging and discharging rate of the battery and make the battery performance more stable and reliable. In a feasible implementation, the baking process may include multiple processes such as preheating, vacuum pumping, baking, and water content testing.

[0067] The process state is used to represent the process in which the current battery is located. In a feasible implementation, the process state corresponding to each process can be determined in advance; for example, the preheating process corresponds to a process state with a value of 1, the vacuum process corresponds to a process state with a value of 2, the baking process corresponds to a process state with a value of 3, and the water content testing corresponds to a process state with a value of 4.

[0068] The process data of each process can refer to the data generated by the battery in each process. For example, the process data of the preheating process may include but are not limited to: preheating start time, preheating end time, station location, and preheating parameters, etc. data. For another example, the vacuum process may include but are not limited to: vacuum pumping start time, vacuum pumping end time, station location, and vacuum pumping parameters, etc. data.

[0069] In some embodiments, the points of interaction between the baking control device and the host computer can be pre-agreed, and this point is located in the PLC (baking control device); the point in the PLC is the basic unit of the PLC program, and each point can be an input, output, or internal register. For example, the points of interaction may include trigger points, status points, storage points, and result points, etc.

[0070] In some embodiments, the specific implementation of step 101 can be: polling and reading the status points of the baking control device; based on the value of the status points, determining the process state corresponding to each process; based on the process state corresponding to each process, extracting the process data of each process from the storage points of the baking control device.

[0071] In a feasible implementation, before the start of each process, the baking control device can set the value of the status point to the corresponding value; in this way, the host computer can poll and read the value of the status point, and then determine the current process state according to the value of the status point; the current process state represents the current process. Under each process, the baking control device can store the process data generated under each process into the storage point; in this way, the host computer can read the process data of each process from the storage point of the baking control device.

[0072] It can be understood that pre-agreeing on the status points and storage points helps the host computer obtain the process state and process data of each process, and thus facilitates subsequent processing.

[0073] Step 102: Check and store the process data of each process based on the process state corresponding to each process.

[0074] Checking the process data of each process based on the process state corresponding to each process is to perform different checks on the process data of the corresponding process according to different processes. In this way, based on the process-based checking method, abnormalities existing in different processes can be detected to improve the accuracy of checking.

[0075] Storing the process data of each process based on the process state corresponding to each process is to classify and store the corresponding process data according to different processes, so as to reduce the storage of useless data, reduce the database pressure, and improve the database query efficiency.

[0076] In some embodiments, different checks can be performed on the process data under different processes. For example, check the temperature in the process data of the preheating process and check the vacuum pressure in the process data of the vacuum process.

[0077] In some embodiments, the process data of each process can be stored according to the process state corresponding to each process. For example, when the process state is at different values, the corresponding storage points are different. In this way, the process data of each process can be classified and stored according to the process state.

[0078] Step 103: After the baking process is completed, perform an out-of-furnace check on the baked battery based on the overall process data; the out-of-furnace check includes one or more of data volume check, process check, and performance check.

[0079] The overall process data can refer to the data generated by the battery in all processes of the baking process. In a feasible implementation, the baking process can include three processes: preheating, vacuum pumping, and baking. In this case, the overall process data can include the process data of the preheating process, the process data of the vacuum process, and the process data of the baking process.

[0080] In some embodiments, the out-of-furnace check of the baked battery can be completed by performing a data volume check, a process check, and a performance check on the baked battery based on the overall process data.

[0081] In some embodiments, after the baking process is completed, it is also necessary to perform a water content test on the baked battery. When the water content test fails, it is determined that the baking is abnormal, and in this case, the overall process data is not uploaded. Specifically, the specific implementation of performing a water content test on the baked battery can be: placing the test battery and the battery to be baked together in the baking chamber for the baking process, and after the baking process is completed, performing a water content test on the test battery to implement the water content test on the baked battery.

[0082] Step 104: Send the out-of-furnace verification result to the baking control device, so that the baking control device performs outbound processing on the baked battery based on the out-of-furnace verification result.

[0083] The out-of-furnace verification result indicates whether there is an abnormality in the baked battery. Performing out-of-furnace verification on the baked battery can prevent abnormal batteries from flowing out due to equipment abnormalities during the process, and at the same time help the management quickly locate which process the equipment abnormality occurs in, reduce the difficulty for the management to troubleshoot equipment abnormalities, and improve the quality of the baked battery.

[0084] In some embodiments, after obtaining the out-of-furnace verification result, the host computer can set the value of the result point based on the out-of-furnace verification result to notify the baking control device of the out-of-furnace verification result.

[0085] In the embodiments of the present disclosure, verifying the process data of the corresponding process according to the process state can detect abnormalities existing in different processes and improve the accuracy of verification; storing the process data of the corresponding process according to the process state can achieve classified storage of process data, reduce the storage of useless data, reduce the storage pressure of the database corresponding to the host computer, and improve the database query efficiency; by adding out-of-furnace verification, abnormal batteries caused by equipment abnormalities during the process can be prevented from flowing out, and at the same time help the management quickly locate which process the equipment abnormality occurs in, reduce the difficulty for the management to troubleshoot equipment abnormalities, and improve the quality of the baked battery.

[0086] The embodiments of the present disclosure provide a battery baking method, which can be executed by the host computer of the battery baking system. As Figure 2 shown, the method includes the following steps 201 to 207:

[0087] Step 201: In response to the process start request for the battery triggered by the baking control device, obtain the identifier of the carrier carrying the battery and the identifier of the battery from the baking control device.

[0088] The battery reaches the baking station through the carrier. The identifier of the carrier is used to uniquely identify the carrier. A baking station processes the batteries of multiple carriers at the same time, so the baking control device can associate the carrier identifier with the battery identifier and store them correspondingly.

[0089] In a feasible implementation manner, when it is detected that the value of the process point is 1, it is determined that the process start request is triggered.

[0090] In a feasible implementation, the process start request may carry the vehicle identifier and the battery identifier, so that the vehicle identifier and the battery identifier can be quickly obtained.

[0091] In a feasible implementation, after the vehicle carrying the battery arrives at the designated position of the baking station, the vehicle identifier and the battery identifier in the vehicle can be obtained by scanning the code.

[0092] Step 202: Verify the identifier of the vehicle and the identifier of the battery to determine whether the identifier of the vehicle and the identifier of the battery are abnormal.

[0093] In some embodiments, it can be determined whether there are abnormalities such as missing numbers, excessive numbers, and garbled codes in the vehicle identifier and the battery identifier, and it can be determined whether the number of battery identifiers corresponding to the vehicle identifier is correct; when it is determined that there are no abnormalities in the vehicle identifier and the battery identifier, and the number of battery identifiers corresponding to the vehicle identifier is correct, it is determined that both the vehicle identifier and the battery identifier pass the verification; when there are abnormalities in the vehicle identifier and / or the battery identifier and / or the number of battery identifiers corresponding to the vehicle identifier is incorrect, it is determined that the vehicle identifier and the battery identifier fail the verification.

[0094] Step 203: When there are no abnormalities in the identifier of the vehicle and the identifier of the battery, send a confirmation instruction for the process start request to the baking control device.

[0095] It can be understood that verifying the vehicle identifier and the battery identifier before the baking process starts can reduce the additional overhead through pre-verification and improve the accuracy of the baking process.

[0096] Step 204: During the baking process of the battery to be baked, obtain the process status corresponding to each process in the baking process and the process data of each process from the baking control device of the battery baking system.

[0097] Step 205: Verify and store the process data of each process based on the process status corresponding to each process.

[0098] Here, the above steps 204 to 205 respectively correspond to the foregoing steps 101 to 102, and the specific implementation manners of the foregoing steps 101 to 102 can be referred to during implementation.

[0099] Step 206: After the baking process is completed, verify the total amount of data, process time, process temperature, and vacuum degree of the overall process data.

[0100] Here, the total amount of process data is verified, which refers to the data volume verification in the furnace-out verification; the process time and process temperature of the overall process data are verified, which refers to the process verification in the furnace-out verification; the vacuum degree of the overall process data is verified, which refers to the performance verification in the furnace-out verification. In this way, by verifying the total amount of data, process time, process temperature, and vacuum degree of the overall process data, the furnace-out verification of the baked battery is realized.

[0101] Among them, step 206 can be implemented through the following steps 2061 to 2064:

[0102] Step 2061: Verify the total amount of data of the overall process data.

[0103] In one implementation, the total amount of data to be stored can be preset in advance, and the total amount of data of the overall process data is verified based on the preset total amount of data. In a feasible implementation, when the total amount of data of the overall process data is greater than or equal to the preset total amount of data, it is determined that the data volume verification is successful; when the total amount of data of the overall process data is less than the preset total amount of data, it is determined that the data volume verification fails.

[0104] In one implementation, the specific implementation of step 2061 can be: determine the target total amount of data to be stored in the baking process and the preset data loss amount; determine the difference between the target total amount of data and the total amount of data of the overall process data; when the difference is less than the data loss amount, determine that the data volume verification is successful; when the difference is greater than or equal to the data loss amount, determine that the data volume verification fails.

[0105] The target total amount of data can refer to the total amount of data to be stored in the baking process. The data loss amount is the preset allowable data loss amount. Difference = Target total amount of data - Total amount of overall process data.

[0106] The difference being less than the data loss amount indicates that the total amount of data of the overall process data is within the allowable loss range. The difference being greater than or equal to the data loss amount indicates that the total amount of data of the overall process data is too small and has exceeded the allowable loss range.

[0107] In a feasible implementation, the specific implementation of "determine the target total amount of data to be stored in the baking process" can be: determine the process start time and process end time from the overall process data; based on the process start time and the process end time, determine the actual process time; based on the data storage frequency and the actual process time, determine the target total amount of data.

[0108] The actual process time may refer to the total time interval from the start of the process to the end of the process, that is, the total time during which the baking process is actually carried out; in a feasible implementation, the actual process time = process end time - process start time. The target data volume may refer to the amount of data that can be stored within the actual process time; in a feasible implementation, the target data volume = actual process time / data storage frequency, that is, the target data volume = (process end time - process start time) / data storage frequency.

[0109] In a feasible implementation, when the target data volume - the data volume of the overall process data < data loss amount, it is determined that the data volume verification is successful; when the target data volume - the data volume of the overall process data ≥ data loss amount, it is determined that the data volume verification fails; when the target data volume < the data volume of the overall process data, it is determined that the data volume verification is successful.

[0110] It can be understood that verifying the data volume of the overall process data based on the target data volume and the data loss amount takes into account the influence of different baking processes on the data volume and also the instability of the data during transmission. By determining the target data volume to be stored in the baking process according to the actual process time and the data storage frequency, the target data volume corresponding to different baking processes can be determined, realizing the adaptive adjustment of the target data volume.

[0111] Step 2062: Verify the process time of the overall process data.

[0112] The process time of the overall process data may include the actual process time (total process time) of the overall process data, the actual preheating time (time of the preheating process), the actual vacuum time (time of the vacuum process), and the actual baking time (time of the baking process).

[0113] In some embodiments, the process time of the overall process data can be verified from multiple aspects such as the baking process, and the preheating process, the vacuum process, the baking process, etc. in the baking process. For example, verify the actual process time, the actual preheating time, the actual vacuum time, and the actual baking time in the overall process data.

[0114] Step 2063: Verify the process temperature of the overall process data.

[0115] The process temperature may include the temperature of each baking process under the baking process.

[0116] In a feasible implementation, the temperature of each baking process in the overall process data can be verified. For example, the temperature of each process can be verified again based on the set temperature to further improve the temperature accuracy of the baking process. Specifically, if the set temperature is a temperature range composed of a temperature upper limit and a temperature lower limit, then when the temperature of each process is greater than the temperature lower limit and less than the temperature upper limit, it is determined that the temperature verification is successful; when the temperature of each process is less than or equal to the temperature lower limit and / or greater than or equal to the temperature upper limit, it is determined that the temperature verification fails, that is, it indicates that the temperature is abnormal at this time.

[0117] Step 2064: Verify the vacuum degree of the overall process data.

[0118] In some embodiments, the set vacuum degree determined in advance for judging the vacuum degree can be used to verify the vacuum degree of the overall process data based on the set vacuum degree. For example, when the vacuum degree of the overall process data reaches the set vacuum degree, it is determined that the vacuum degree verification is successful; when the vacuum degree of the overall process data does not reach the set vacuum degree, it is determined that the vacuum degree verification fails.

[0119] In some embodiments, the specific implementation of step 2064 can be: determine the maximum target vacuum degree and the minimum target vacuum degree from the overall process data; when the maximum target vacuum degree and the minimum target vacuum degree meet the set vacuum degree, it is determined that the vacuum degree verification is successful.

[0120] The maximum target vacuum degree can refer to the maximum vacuum degree in the baking process. The minimum target vacuum degree can refer to the minimum vacuum degree in the baking process.

[0121] In a feasible implementation, the set vacuum degree can refer to the upper limit and the lower limit of the vacuum degree; when the maximum target vacuum degree < the vacuum degree upper limit and the minimum target vacuum degree < the vacuum degree lower limit, it is determined that the vacuum degree verification is successful; when the maximum target vacuum degree ≥ the vacuum degree upper limit and / or the minimum target vacuum degree ≥ the vacuum degree lower limit, it is determined that the vacuum degree verification fails.

[0122] In a feasible implementation manner, the specific implementation manner of "determining the maximum target vacuum degree and the minimum target vacuum degree from the overall process data" may be as follows: determining the process data of the vacuum process in the baking process from the overall process data; dividing the process data of the vacuum process according to the number of breaths to obtain the process data for each breath; determining the maximum vacuum degree and the minimum vacuum degree of the process data for each breath; comparing the maximum vacuum degrees for each breath to obtain the maximum target vacuum degree; and comparing the minimum vacuum degrees for each breath to obtain the minimum target vacuum degree.

[0123] In a feasible implementation manner, since the process data is stored according to the process state as described above, the process data of the vacuum process can be quickly determined from the overall process data based on the process state corresponding to the vacuum process.

[0124] During the vacuum process, there will be multiple breaths. One breath refers to pumping the pressure in the furnace cavity to the residual pressure. Moreover, since the difficulty of vacuum pumping is different for each breath, the time and vacuum degree for each breath will also be different. Therefore, the process data of the vacuum process can be divided according to the number of breaths to obtain the process data for each breath.

[0125] In a feasible implementation manner, some data can be removed according to the vacuum pumping difficulty of different breaths, and then the maximum vacuum degree and the minimum vacuum degree for each breath can be obtained. Furthermore, the maximum vacuum degrees for multiple breaths are compared to obtain the maximum target vacuum degree, and the minimum vacuum degrees for multiple breaths are compared to obtain the minimum target vacuum degree. Among them, the specific implementation manner of removing some data according to the vacuum pumping difficulty of different breaths may be: setting a time threshold corresponding to each breath and removing the data outside the time threshold. For example, the time threshold for the first breath can be 15 minutes, and the time threshold for the second breath can be 10 minutes.

[0126] It can be understood that by verifying the vacuum degree of the overall process data according to the set vacuum degree, the maximum target vacuum degree, and the minimum target vacuum degree, it can be determined whether there is an abnormality in the vacuum degree of the baking process. Determining the maximum target vacuum degree and the minimum target vacuum degree based on the maximum vacuum degree and the minimum vacuum degree for each breath comprehensively considers the changes in the vacuum degree during the vacuum process, and thus can improve the accuracy of the vacuum degree verification result.

[0127] It should be noted that the verification of the total amount of the overall process data, the process time, the process temperature, and the vacuum degree can be executed sequentially or in other orders, and the embodiments of the present application do not limit this.

[0128] Step 207: Send the out-of-furnace verification result to the baking control device, so that the baking control device performs outbound processing on the baked battery based on the out-of-furnace verification result.

[0129] In some embodiments, the above step 205 can be implemented through the following steps 2051 to 2053:

[0130] Step 2051: Determine the set parameters corresponding to each process based on the correspondence between each process and the set parameters.

[0131] The set parameters can refer to the parameters that are pre-set and can be used as the basis for verification. In a feasible implementation manner, the set parameters can include one or more parameters. For example, the set parameters can include temperature, pressure, vacuum degree, etc. The correspondence between different processes and the set parameters represents the association relationship between the process and the parameters.

[0132] In one implementation manner, the set parameters corresponding to different processes can be determined, and each process and the corresponding set parameters are stored in a key-value pair form to obtain the correspondence between different processes and the set parameters. In this way, based on this correspondence, the set parameters corresponding to each process can be determined.

[0133] It should be noted that different processes can correspond to the same set parameters or different set parameters. For example, the set parameter corresponding to the preheating process is the set temperature, the set parameter corresponding to the vacuum process is the set pressure, and the set parameter corresponding to the baking process is the set temperature.

[0134] Step 2052: Verify the process data of each process based on the set parameters corresponding to each process.

[0135] In one implementation manner, the correctness of the process data of each process can be verified based on the set parameters corresponding to each process, and the integrity of the process data of each process can also be verified based on the set parameters corresponding to each process.

[0136] Step 2053: When the process data verification of each process is successful, store the process data of each process according to the process state corresponding to each process.

[0137] The successful verification of the process data of each process indicates that the correctness and integrity of the process data of each process are both verified successfully.

[0138] In one implementation manner, it can be cycled once every specific duration, and the storage action is repeated to store the process data of each process according to the process state corresponding to each process; where the specific duration can be 5 seconds.

[0139] It should be noted that in the existing solution, the host computer can only record data such as the furnace cavity temperature and vacuum degree every 10 seconds, and then store these data in the database according to the furnace cavity number. However, in the present disclosure, the process data is recorded every 5 seconds, and by storing the process data of each process according to the process state corresponding to each process, not only can the data storage rate be improved, but also data confusion can be prevented, useless data storage can be reduced, the database pressure can be reduced, and the database query efficiency can be improved.

[0140] It can be understood that by verifying the process data of each process according to the set parameters corresponding to each process, different verifications can be performed on the process data of different processes, and the accuracy of the process data of each process can be improved.

[0141] In some embodiments, the above step 2052 can be implemented by the following steps 2052a to 2052d:

[0142] Step 2052a: Verify the correctness of the process data of each process based on the set parameters corresponding to each process.

[0143] In some implementation manners, the specific implementation manner of step 2052a can be: verifying the temperature of each process based on the set temperature in the set parameters corresponding to each process to determine whether the temperature of each process is abnormal; verifying the vacuum pressure of each process based on the set pressure in the set parameters corresponding to each process to determine whether the vacuum pressure of each process is abnormal.

[0144] The set temperature can refer to the basis for judging whether the temperature of each process is normal. In a feasible implementation manner, the set temperatures corresponding to different processes can be the same or different, and the present application does not limit this.

[0145] In a feasible implementation manner, for each process, determine whether the temperature of each process reaches the set temperature; when the temperature of each process reaches the set temperature, determine that the temperature of each process is not abnormal; when the temperature of each process does not reach the set temperature, determine that the temperature of each process is abnormal.

[0146] It should be noted that the present disclosure only takes battery parameters such as set temperature and set pressure as examples to illustrate the specific implementation of verifying the correctness of the process data of each process. Of course, upper and lower limit verification can also be performed on the process data of each process according to other battery parameters, and the embodiments of the present application do not limit this.

[0147] It can be understood that by verifying the process data of each process based on the set temperature and set pressure, it is possible to determine whether there are abnormalities in the process data of each process; furthermore, when there are abnormalities, the abnormalities can be processed in a timely manner.

[0148] Step 2052b: Verify the integrity of the process data of each process based on the set data volume in the set parameters corresponding to each process.

[0149] The set data volume can refer to the data volume that should be stored for each process. In a feasible implementation, the set data volumes corresponding to different processes can be the same or different, and the present application does not limit this.

[0150] In a feasible implementation, it can be determined whether the data volume of the process data of each process is greater than or equal to the set data volume; when the data volume of the process data of each process is greater than or equal to the set data volume, it is determined that the integrity verification of the process data of each process is successful; when the data volume of the process data of each process is less than the set data volume, it is determined that the integrity verification of the process data of each process is successful.

[0151] Step 2052c: When the correctness and integrity of the process data of each process are both verified successfully, it is determined that the process data of each process is verified successfully.

[0152] Step 2052d: When any one of the correctness and integrity of the process data of each process fails to be verified, it is determined that the process data of each process fails to be verified.

[0153] Any one of the correctness and integrity of the process data of each process failing to be verified can include the following three situations: The first situation is that the correctness verification of the process data of each process fails but the integrity verification is successful; the second situation is that the correctness verification of the process data of each process is successful but the integrity verification fails; the third situation is that both the correctness and integrity of the process data of each process fail to be verified.

[0154] It can be understood that by verifying the correctness and integrity of the process data of each process according to the set parameters corresponding to each process, it is possible to determine whether there are abnormalities in each process from the perspectives of battery parameters and data volume; furthermore, when there are abnormalities, the management personnel can be reminded in a timely manner to conduct inspections to avoid abnormal batteries flowing out caused by abnormal processes.

[0155] In some embodiments, the process time of the overall process data includes the actual process time, the actual preheating time, and the actual vacuum time. In this case, the above step 2062 can be implemented through the following steps 2062a to 2062c:

[0156] Step 2062a: Verify the actual process time based on the set process time and the first tolerance time to determine whether the actual process time is abnormal.

[0157] The set process time can refer to the total time of the pre-set baking process. The actual process time can refer to the total time that the baking process actually takes. The first tolerance time can refer to the allowed excess time set for the actual process time.

[0158] In some embodiments, the specific implementation of step 2062a can be: when the set process time is less than or equal to the actual process time, and the sum of the set process time and the first tolerance time is greater than or equal to the actual process time, it is determined that the actual process time is not abnormal; when the set process time is greater than the actual process time, and / or the sum of the set process time and the first tolerance time is less than the actual process time, it is determined that the actual process time is abnormal.

[0159] In a feasible implementation, when the set process time ≤ the actual process time, and the set process time + the first tolerance time ≥ the actual process time, it is determined that the actual process time is not abnormal; when the set process time > the actual process time, and / or, the set process time + the first tolerance time < the actual process time, it is determined that the actual process time is not abnormal.

[0160] It can be understood that verifying the actual process time according to the set process time and the first tolerance time can determine whether the total time of the baking process is abnormal.

[0161] Step 2062b: Verify the actual preheating time based on the set preheating time and the second tolerance time to determine whether the actual preheating time is abnormal.

[0162] The set preheating time can refer to the time set for the preheating process. The actual preheating time can refer to the time that the preheating process actually takes. The second tolerance time can refer to the allowed excess time set for the actual preheating time.

[0163] In some embodiments, the specific implementation of step 2062c may be as follows: From the overall process data, determine the first preheating time of the first piece of data and the second preheating time of the last piece of data when the process state is the preheating process; Based on the first preheating time and the second preheating time, determine the actual preheating time; In the case where the set preheating time is less than or equal to the actual preheating time, and the sum of the set preheating time and the second tolerance time is greater than or equal to the actual preheating time, determine that the actual preheating time is normal; In the case where the set preheating time is greater than the actual preheating time, and / or the sum of the set preheating time and the second tolerance time is less than the actual preheating time, determine that the actual preheating time is abnormal.

[0164] The first preheating time may refer to the time when the first piece of data is obtained when the process state is the preheating process, that is, the first preheating time may refer to the start time of the preheating process. The second preheating time may refer to the time when the last piece of data is obtained when the process state is the preheating process, that is, the first preheating time may refer to the end time of the preheating process. The actual preheating time may refer to the time when the preheating process actually takes place; for example, the actual preheating time = the second preheating time - the first preheating time.

[0165] In a feasible implementation, in the case where the set preheating time ≤ the actual preheating time, and the sum of the set preheating time + the second tolerance time ≥ the actual preheating time, determine that the actual preheating time is normal; in the case where the set preheating time is greater than the actual preheating time, and / or, the sum of the set preheating time + the second tolerance time < the actual preheating time, determine that the actual preheating time is abnormal.

[0166] It can be understood that by verifying the actual preheating time according to the set preheating time and the second tolerance time, it can be determined whether the time of the preheating process is abnormal.

[0167] Step 2062c, verify the actual vacuum time based on the set vacuum time and the third tolerance time, and determine whether the actual vacuum time is abnormal.

[0168] Among them, the process time of the overall process data includes the actual process time, the actual preheating time, and the actual vacuum time.

[0169] The set vacuum time may refer to the time set for the vacuum process. The actual vacuum time may refer to the time when the vacuum process actually takes place. The third tolerance time may refer to the allowed excess time set for the actual vacuum time.

[0170] In some embodiments, the specific implementation of step 2062c may be as follows: when the set vacuum time is less than or equal to the actual vacuum time, and the sum of the set vacuum time and the third tolerance time is greater than or equal to the actual vacuum time, it is determined that the actual vacuum time is normal; when the set vacuum time is greater than the actual vacuum time, and / or the sum of the set vacuum time and the third tolerance time is less than the actual vacuum time, it is determined that the actual vacuum time is abnormal.

[0171] In a feasible implementation, when the set vacuum time ≤ the actual vacuum time, and the sum of the set vacuum time + the third tolerance time ≥ the actual vacuum time, it is determined that the actual vacuum time is normal; when the set vacuum time > the actual vacuum time, and / or the sum of the set vacuum time + the third tolerance time < the actual vacuum time, it is determined that the actual vacuum time is abnormal.

[0172] It can be understood that by verifying the actual vacuum time according to the set vacuum time and the third tolerance time, it can be determined whether the time of the vacuum process is abnormal.

[0173] It can be understood that by verifying the actual process time, the actual preheating time, and the actual vacuum time, it can be determined whether the process time of the overall process data is abnormal, improving the time accuracy of the baking process.

[0174] In some embodiments, the out-of-oven verification further includes MES verification. For example, the overall process data is uploaded to the Manufacturing Execution System (MES) to obtain the MES verification result; thus, it is determined whether the baked battery can flow out normally according to the data volume verification, the process verification, the performance verification, and the MES verification.

[0175] The embodiments of the present disclosure provide a battery baking method, which can be executed by the baking control device of the battery baking system. As Figure 3 shown, the method includes the following steps 301 to step 303:

[0176] Step 301, during the process of baking the battery to be baked, set the process status corresponding to each process in the baking process, and collect the process data of each process.

[0177] Before any process starts, the baking control device can first set the value of the process point to the corresponding process status, then perform the process, and collect the process data of the process.

[0178] Step 302: Write the process status corresponding to each process and the process data of each process into the storage point interacting with the host computer, so that the host computer can verify and store the process data of each process based on the process status corresponding to each process.

[0179] Step 303: After receiving the out-of-furnace verification result of the baked battery sent by the host computer, perform out-of-station processing on the baked battery based on the out-of-furnace verification result.

[0180] In one implementation, when the out-of-furnace verification result indicates that the out-of-furnace verification of the baked battery fails, perform abnormal processing on the baked battery; when the out-of-furnace verification result indicates that the out-of-furnace verification of the baked battery is successful, perform normal out-of-station processing on the baked battery.

[0181] In some embodiments, before step 301, the battery baking method further includes the following steps 304 to 305:

[0182] Step 304: When it is detected that the battery reaches the trigger position, trigger a process start request for the battery.

[0183] The trigger position can be a position for triggering a process start request.

[0184] In some implementations, a sensor can be installed at the trigger position. In this way, after the carrier transports the battery to the trigger position, the value of the process point can be changed from 0 to 1 to trigger a process start request.

[0185] Step 305: After receiving the confirmation instruction for the process start request sent by the host computer in the battery baking system, perform a baking process on the battery.

[0186] In the embodiments of the present disclosure, verifying the process data of the corresponding process according to the process status can detect abnormalities existing in different processes and improve the accuracy of verification; storing the process data of the corresponding process according to the process status can achieve classified storage of process data, reduce the storage of useless data, reduce the storage pressure of the database corresponding to the host computer, and improve the database query efficiency; by adding out-of-furnace verification, it is possible to avoid abnormal batteries flowing out due to equipment abnormalities during the process, and at the same time help managers quickly locate which process the equipment abnormality occurs in, reduce the difficulty for managers to troubleshoot equipment abnormality problems, and improve the quality of the baked battery.

[0187] Next, the application of the battery baking method provided by the embodiments of the present disclosure in an actual scenario will be described.

[0188] The battery baking method includes the following three parts:

[0189] 1. After the fixture loading is completed and it reaches the trigger position, the host computer executes Figure 4 the process start flow shown below.

[0190] As Figure 4 shown, this process start flow includes the following steps 401 to 409:

[0191] Step 401: The host computer initialization is completed, and the process start flow is started.

[0192] Step 402: When the PLC detects that the battery to be baked reaches the trigger position, it triggers a process start request for the battery.

[0193] Step 403: The host computer determines whether the value of the process point is 1.

[0194] If the value of the process point is 1, it is determined to trigger the process start request; if the value of the process point is 0, step 402 is executed again.

[0195] Step 404: The PLC resets the process point.

[0196] Resetting the process point means setting the value of the process point to 0. The operation of resetting the station point can also be actively executed by the host computer, or the PLC can reset it to 0 by itself after a specific time (1 minute).

[0197] Step 405: The PLC reads the vehicle identification.

[0198] Step 406: The host computer determines whether the vehicle identification is abnormal.

[0199] If the vehicle identification is abnormal, step 402 is executed again; if the vehicle identification is not abnormal, step 407 is executed.

[0200] Step 407: The PLC reads the battery identification inside the vehicle.

[0201] Step 408: The host computer determines whether the battery identification is abnormal.

[0202] If the battery identification is abnormal, step 402 is executed again; if the battery identification is not abnormal, step 409 is executed.

[0203] Step 409: The PLC writes an allow process signal.

[0204] Here, writing the allow process signal means allowing the host computer to start the out-of-furnace verification.

[0205] After the baking cavity, the vehicle, the PLC, and the host computer are ready and all are in normal operating conditions, the process point is set to 1 to trigger a process start request to request the host computer to start the process.

[0206] The host computer polls and reads the values of the process points. If the value of a process point is 1, it determines to trigger a process start request, resets the process point, and sets the value of the process point to 0. It should be noted that the host computer can read all process points at one time.

[0207] The host computer reads the carrier identification of the baking cavity to be baked, and then obtains the battery identification in the carrier. It verifies the battery identification and the carrier identification, and stores the verification result in the database for subsequent traceability.

[0208] When the host computer determines that both the battery identification and the carrier identification are successfully verified, it writes an allow - process signal to the PLC, and the host - computer process start process ends.

[0209] 2. During the process, execute Figure 5 the data storage process shown in

[0210] As Figure 5 shown, the data storage process in this process includes the following steps 501 to 507:

[0211] Step 501: The host computer starts the baking process.

[0212] Step 502: The host computer obtains the process status of the baking cavity from the PLC.

[0213] Step 503: The host computer determines whether the baking cavity is in the process status.

[0214] If the baking cavity is in the process status, execute Step 504; if the baking cavity is not in the process status, return to execute Step 502.

[0215] Step 504: The host computer reads the process data of the current process from the PLC.

[0216] Step 505: The host computer verifies the correctness and integrity of the process data of the current process.

[0217] If both the correctness and integrity are successfully verified, execute Step 506; if any one of the correctness and integrity verifications fails, re - execute Step 502.

[0218] Step 506: The host computer stores the process data of the current process in the database according to the process status of the current process.

[0219] Step 507: The host computer re - executes Step 502 at a specific interval (5 seconds).

[0220] The PLC writes the process status into the process points that interact with the host computer according to the current process step.

[0221] The host computer polls to obtain the values of the process points, and determines whether the current value is the preset process status. If it is the set process status, it starts to obtain process data such as the vacuum pressure and the temperature of each layer board in the current process step, and verifies the correctness and integrity of the process data to prevent abnormalities of the battery cells under the corresponding process. If the verification of correctness and integrity is successful, the process data is stored in the database according to the process status for verification and traceability query after the process is completed. The operation of storing data loops every 5 seconds, and the read and storage operations are repeated.

[0222] 3. After the actual process time reaches the set process time, perform multi-faceted verification on the overall process data to determine whether the baked battery is allowed to leave the baking chamber.

[0223] As Figure 6 shown, the process completion and furnace exit verification process includes the following steps 601 to 617:

[0224] Step 601: The host computer starts the process completion and furnace exit verification.

[0225] Step 602: The PLC triggers the process completion signal.

[0226] Step 603: The host computer determines whether the value of the point corresponding to the process completion signal is 1.

[0227] The process completion point can be preset in the PLC. If the value of the point corresponding to the process completion signal is 1, it is determined that the process is completed, and step 604 is executed; if the value of the point corresponding to the process completion signal is 0, step 602 is re-executed to detect whether the PLC triggers the process completion signal.

[0228] Step 604: The PLC resets the process completion point to 0.

[0229] Step 605: The host computer determines the total target data volume according to the process start time and the process end time.

[0230] Step 606: The host computer determines whether the total data volume meets the standard.

[0231] If the total data volume meets the standard, step 607 is executed; if the total data volume does not meet the standard, step 617 is executed.

[0232] Step 607: The host computer determines the actual process time, and the actual times of the preheating and vacuum processes.

[0233] Step 608: The PLC determines the set process time, and the set times of the preheating and vacuum processes.

[0234] Step 609, the host computer determines whether the process time of the overall process data meets the standard.

[0235] If the process time of the overall process data meets the standard, step 610 is executed; if the process time of the overall process data does not meet the standard, step 617 is executed.

[0236] Step 610, the host computer determines the actual temperature of the preheating and vacuum processes.

[0237] Step 611, the PLC determines the set temperature of the preheating and vacuum processes.

[0238] Step 612, the host computer determines whether the process temperature of the overall process data meets the standard.

[0239] If the process temperature of the overall process data meets the standard, step 613 is executed; if the process temperature of the overall process data does not meet the standard, step 617 is executed.

[0240] Step 613, the host computer determines the process data of the vacuum process.

[0241] Step 614, the PLC determines the set vacuum degree of the vacuum process.

[0242] Step 615, the host computer determines whether the vacuum degree of the overall process data meets the standard.

[0243] If the vacuum degree of the overall process data meets the standard, step 616 is executed; if the vacuum degree of the overall process data does not meet the standard, step 617 is executed.

[0244] Step 616, the PLC writes the signal allowing the furnace to be discharged.

[0245] Step 617, the PLC writes an abnormal signal.

[0246] When the PLC determines that there is no obvious abnormality in the baking process, the preheating time meets the standard, and the process time meets the standard, the value of the process completion point is set to 1, and a process completion release request is sent to the host computer.

[0247] The host computer polls and reads the value of the process completion point. When the value of the process completion point is 1, it determines to trigger a process completion request and resets the process completion point to 0.

[0248] The host computer reads the overall process data and performs a database query operation based on the process start time and process end time to query all process data such as temperature, vacuum degree, and process status in the current process.

[0249] As Figure 7 shown, the process of determining whether the total amount of overall process data meets the standard includes the following steps 701 to 706:

[0250] Step 701: The host computer determines the total amount of overall process data from the database.

[0251] Step 702: The host computer determines the total amount of target data to be stored for the baking process; the total amount of target data = (process start time - process end time) / data storage frequency.

[0252] Step 703: The host computer determines whether the difference between the total amount of target data and the total amount of overall process data is less than the data loss value.

[0253] If the difference between the total amount of target data and the total amount of overall process data is less than the data loss value, then execute Step 705; if the difference between the total amount of target data and the total amount of overall process data is greater than or equal to the data loss value, then execute Step 704.

[0254] Step 704: The host computer feeds back the verification result of data total amount verification failure to the PLC.

[0255] Step 705: The host computer feeds back the verification result of data total amount verification success to the PLC.

[0256] The host computer calculates the total amount of target data that should be stored during the process according to the formula ((process start time - process end time) / storage frequency), then performs a subtraction operation with the result queried from the database, determines whether the difference is greater than the set data loss amount, and further feeds back the verification result of the data total amount and writes it into the PLC.

[0257] As Figure 8 shown, the process of determining whether the process time of the overall process data meets the standard includes the following steps 801 to step 809:

[0258] Step 801: The host computer queries the overall process data from the database.

[0259] Step 802: The host computer determines the actual process time; the actual process time = process end time - process start time.

[0260] Step 803: The host computer determines the actual preheating time; the actual preheating time = the time of the last data in the preheating process - the time of the first data in the preheating process.

[0261] Step 804: The host computer determines the actual vacuum time; the actual vacuum time = the time of the last data in the vacuum process - the time of the first data in the vacuum process.

[0262] Step 805: The PLC determines the set process time, set preheating time, and set vacuum time.

[0263] Step 806: The host computer determines whether the set process time is less than or equal to the actual process time, and whether the sum of the set process time and the first tolerance time is greater than or equal to the actual process time.

[0264] Step 807: The host computer determines whether the set preheating time is less than or equal to the actual preheating time, and whether the sum of the set preheating time and the second tolerance time is greater than or equal to the actual preheating time.

[0265] Step 808: The host computer determines whether the set vacuum time is less than or equal to the actual vacuum time, and whether the sum of the set vacuum time and the third tolerance time is greater than or equal to the actual vacuum time.

[0266] Step 809: The host computer feeds back the verification result of the process time of the overall process data to the PLC.

[0267] As Figure 9 shown, the process of determining whether the vacuum degree of the overall process data meets the standard includes the following steps 901 to 906:

[0268] Step 901: The host computer determines the process data of the vacuum process from the database according to the process state.

[0269] Step 902: The host computer divides the process data of the vacuum process according to the number of breaths.

[0270] Step 903: The host computer removes some data according to the different number of breaths, and then obtains the maximum target vacuum degree and the minimum target vacuum degree in the vacuum process.

[0271] Step 904: The host computer compares the maximum target vacuum degree and the minimum target vacuum degree with the upper and lower limits of the vacuum degree.

[0272] If the maximum target vacuum degree and the minimum target vacuum degree meet the upper and lower limits of the vacuum degree, that is, the maximum target vacuum degree is less than the upper limit of the vacuum degree and the minimum target vacuum degree is greater than the lower limit of the vacuum degree, then step 906 is executed; if the maximum target vacuum degree and the minimum target vacuum degree do not meet the upper and lower limits of the vacuum degree, that is, the maximum target vacuum degree is greater than or equal to the upper limit of the vacuum degree and / or the minimum target vacuum degree is less than or equal to the lower limit of the vacuum degree, then step 905 is executed.

[0273] Step 905: The host computer feeds back the verification result of the failed vacuum degree verification to the PLC.

[0274] Step 906: The host computer feeds back the verification result of the successful vacuum degree verification to the PLC.

[0275] The host computer screens out the process data of the vacuum process according to the process state, distinguishes the data of different stages according to the number of breaths, removes some data according to the difficulty of vacuum pumping in different stages, then obtains the maximum vacuum degree and the minimum vacuum degree under the current breath, and then compares the data of multiple breaths to screen out the maximum value and the minimum value again, and then feeds back the judgment result and writes it into the PLC.

[0276] It should be noted that the points in the embodiments of the present disclosure can all be controlled by the PLC and the host computer.

[0277] The existing solutions have the following technical problems: 1) Storing data once every 10 seconds, the data storage interval is relatively large, and it is easy to lose some temperature, pressure and other change data in the process. 2) After the host computer is started, storing data once every 10 seconds will store a large amount of useless data in the database, resulting in an increase in the amount of data in the database and a decrease in the query efficiency. 3) There is no verification between the host computer and the PLC when the furnace is out, resulting in some key data in the process not being monitored, resulting in batteries with process abnormalities after the process is completed, and then being intercepted by the MES system when uploading data.

[0278] The present disclosure has at least the following innovative points: 1) Increasing data interaction verification to improve the processing efficiency of abnormal cavity processes; 2) Standardized design of the interaction process between the host computer and the device; 3) Standardized design of the data verification process before the process is completed and the furnace is out of the cavity.

[0279] The present disclosure has at least the following technical effects: 1) Storing data according to the process state can reduce the storage of useless data, reduce the database pressure, and improve the database query efficiency; 2) Before the process is completed and the furnace is out of the cavity, upper and lower limit verification is performed on key data. If the limit is exceeded, the process is restarted, which greatly reduces a series of problems caused by process abnormalities such as excessive battery water content due to abnormal data after the process is completed and processing time-consuming due to abnormal data upload, and improves the PPM of the device; 2) By adding a data verification process before the process is completed and the furnace is out of the cavity, abnormal batteries caused by equipment abnormalities during the process are avoided, and at the same time, the difficulty for management personnel to troubleshoot equipment abnormalities is reduced, and the quality of the batteries after the furnace is out and the manufacturing efficiency of the overall equipment are improved.

[0280] As Figure 10 shown, the embodiments of the present disclosure provide a battery baking system 1000, and the battery baking system includes a baking control device 1001 and a host computer 1002;

[0281] The baking control device 1001 is used to determine the process state and process data corresponding to each process in the baking process when baking the battery to be baked; write the process state and process data corresponding to each process into the storage location for interacting with the host computer 1002; perform outbound processing on the baked battery based on the out-of-furnace verification result of the baked battery sent by the host computer 1002.

[0282] The host computer 1002 is used to obtain the process state and process data corresponding to each process from the storage location in the baking control device 1001; verify and store the process data corresponding to each process based on the process state corresponding to each process; after the baking process is completed, perform out-of-furnace verification on the baked battery based on the overall process data; the overall process data includes the process data of all processes of the baking process; the out-of-furnace verification includes one or more of data volume verification, process verification, and performance verification.

[0283] In some embodiments, the battery baking system 1000 includes a gripping device and a baking chamber; the gripping device is used to grip the battery and transfer it to the baking chamber; the baking chamber is used to perform a baking process on the battery.

[0284] In some embodiments, the baking chamber includes multiple layers of core storage components, and each layer of core storage component is provided with a temperature sensor; the baking chamber is provided with at least one pressure sensor; the temperature sensor is used to detect the temperature of the battery in each layer of core storage component under each process; the pressure sensor is used to detect the pressure of the battery in the baking chamber under each process.

[0285] In some embodiments, the battery baking system 1000 includes a carrier; the carrier is used to transfer the battery to a position for triggering a process start request for the battery.

[0286] The description of the above device embodiments is similar to the description of the above method embodiments and has similar beneficial effects to the method embodiments. In some embodiments, the functions or modules included in the device provided by the embodiments of the present disclosure can be used to execute the methods described in the above method embodiments. For the technical details not disclosed in the device embodiments of the present disclosure, please refer to the description of the method embodiments of the present disclosure for understanding.

[0287] It should be noted that in the embodiments of the present disclosure, if the above battery baking method is implemented in the form of software functional modules and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present disclosure, in essence or the part that contributes to the related art, can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), magnetic disks, or optical discs that can store program codes. Thus, the embodiments of the present disclosure are not limited to any specific hardware, software, or firmware, or any combination among hardware, software, and firmware.

[0288] The embodiments of the present disclosure provide a computer device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the program, it implements some or all of the steps in the above method.

[0289] The embodiments of the present disclosure provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by the processor, it implements some or all of the steps in the above method. The computer-readable storage medium can be transient or non-transient.

[0290] The embodiments of the present disclosure provide a computer program, including computer-readable code. When the computer-readable code runs in a computer device, the processor in the computer device executes to implement some or all of the steps in the above method.

[0291] The embodiments of the present disclosure provide a computer program product. The computer program product includes a non-transient computer-readable storage medium storing a computer program. When the computer program is read and executed by a computer, it implements some or all of the steps in the above method. The computer program product can be specifically implemented in a manner of hardware, software, or a combination thereof. In some embodiments, the computer program product is specifically embodied as a computer storage medium. In other embodiments, the computer program product is specifically embodied as a software product, such as a software development kit (SDK), etc.

[0292] It should be noted here that: the descriptions of the above embodiments tend to emphasize the differences between the embodiments, and their similarities can be referred to each other. The descriptions of the above embodiments of the device, storage medium, computer program, and computer program product are similar to the descriptions of the above method embodiments and have beneficial effects similar to those of the method embodiments. For the technical details not disclosed in the embodiments of the device, storage medium, computer program, and computer program product of the present disclosure, please refer to the descriptions of the method embodiments of the present disclosure for understanding.

[0293] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present disclosure. Therefore, the "in one embodiment" or "in an embodiment" that appears throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present disclosure, the magnitudes of the sequence numbers of the above steps / processes do not mean the order of execution, and the order of execution of each step / process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present disclosure. The sequence numbers of the above embodiments of the present disclosure are only for description and do not represent the advantages or disadvantages of the embodiments.

[0294] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0295] In several embodiments provided by the present disclosure, it should be understood that the disclosed device and method can be implemented in other ways. The above-described device embodiments are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed with each other can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical, mechanical, or other forms.

[0296] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, the functional units in the embodiments of the present disclosure may all be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0297] As described above, the above are only the embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure.

Claims

1. A battery baking method, characterized in that, Host computer applied to a battery baking system, the battery baking method comprising: During the process of performing a baking process on the battery to be baked, obtaining, from a baking control device of the battery baking system, the process status corresponding to each process in the baking process and the process data of each process; Verifying and storing the process data of each process based on the process status corresponding to each process; After the baking process is completed, performing an out-of-oven verification on the baked battery based on the overall process data; wherein, the overall process data includes the process data of all processes of the baking process; the out-of-oven verification includes one or more of data volume verification, process verification, and performance verification; Sending the out-of-oven verification result to the baking control device so that the baking control device performs an outbound process on the baked battery based on the out-of-oven verification result.

2. The battery baking method according to claim 1, wherein The obtaining, from a baking control device of the battery baking system, the process status corresponding to each process in the baking process and the process data of each process includes: Polling and reading the status points of the baking control device; Determining the process status corresponding to each process based on the value of the status point; Extracting the process data of each process from the storage points of the baking control device based on the process status corresponding to each process.

3. The battery baking method according to claim 1 or 2, characterized in that The verifying and storing the process data of each process based on the process status corresponding to each process includes: Determining the set parameters corresponding to each process based on the corresponding relationship between each process and the set parameters; Verifying the process data of each process based on the set parameters corresponding to each process; When the process data verification of each process is successful, storing the process data of each process according to the process status corresponding to each process.

4. The battery baking method according to claim 3, wherein The verifying the process data of each process based on the set parameters corresponding to each process includes: Verifying the correctness of the process data of each process based on the set parameters corresponding to each process; Verifying the integrity of the process data of each process based on the set data volume in the set parameters corresponding to each process; When the correctness and integrity of the process data of each process are both verified successfully, determining that the process data verification of each process is successful; When any one of the correctness and integrity of the process data of each process fails to be verified, determining that the process data verification of each process fails.

5. The battery baking method according to claim 4, characterized in that, The verifying the correctness of the process data of each process based on the set parameters corresponding to each process includes: Verifying the temperature of each process based on the set temperature in the set parameters corresponding to each process to determine whether the temperature of each process is abnormal; Verifying the vacuum pressure of each process based on the set pressure in the set parameters corresponding to each process to determine whether the vacuum pressure of each process is abnormal.

6. The battery baking method according to any one of claims 1 to 2 or 4 to 5, characterized in that The performing an out-of-oven verification on the baked battery based on the overall process data includes: Verifying the total amount of the overall process data; Verify the process time of the overall process data; Verify the process temperature of the overall process data; Verify the vacuum degree of the overall process data.

7. The battery baking method according to claim 6, characterized in that, The verification of the total amount of the overall process data includes: Determine the target total amount of data to be stored in the baking process and the set data loss amount; Determine the difference between the target total amount of data and the total amount of the overall process data; When the difference is less than the data loss amount, determine that the verification of the total amount of data is successful; When the difference is greater than or equal to the data loss amount, determine that the verification of the total amount of data fails.

8. The battery baking method according to claim 7, characterized in that, The determination of the target total amount of data to be stored in the baking process includes: Determine the process start time and the process end time from the overall process data; Based on the process start time and the process end time, determine the actual process time; Based on the data storage frequency and the actual process time, determine the target total amount of data.

9. The battery baking method according to claim 7 or 8, characterized in that, The verification of the process time of the overall process data includes: Verify the actual process time based on the set process time and the first tolerance time to determine whether the actual process time is abnormal; Verify the actual preheating time based on the set preheating time and the second tolerance time to determine whether the actual preheating time is abnormal; Verify the actual vacuum time based on the set vacuum time and the third tolerance time to determine whether the actual vacuum time is abnormal; the process time of the overall process data includes the actual process time, the actual preheating time and the actual vacuum time.

10. The battery baking method according to claim 9, characterized in that, The verification of the actual process time based on the set process time and the first tolerance time to determine whether the actual process time is abnormal includes: When the set process time is less than or equal to the actual process time and the sum of the set process time and the first tolerance time is greater than or equal to the actual process time, determine that the actual process time is not abnormal; When the set process time is greater than the actual process time and / or the sum of the set process time and the first tolerance time is less than the actual process time, determine that the actual process time is abnormal.

11. The battery baking method according to claim 9, wherein, The verification of the actual preheating time based on the set preheating time and the second tolerance time to determine whether the actual preheating time is abnormal includes: Determine the first preheating time of the first data and the second preheating time of the last data when the process state is the preheating process from the overall process data; Based on the first preheating time and the second preheating time, determine the actual preheating time; When the set preheating time is less than or equal to the actual preheating time and the sum of the set preheating time and the second tolerance time is greater than or equal to the actual preheating time, determine that the actual preheating time is not abnormal; When the set preheating time is greater than the actual preheating time and / or the sum of the set preheating time and the second tolerance time is less than the actual preheating time, determine that the actual preheating time is abnormal.

12. The battery baking method according to claim 9, wherein Verifying the actual vacuum time based on the set vacuum time and the third tolerance time to determine whether the actual vacuum time is abnormal, including: When the set vacuum time is less than or equal to the actual vacuum time, and the sum of the set vacuum time and the third tolerance time is greater than or equal to the actual vacuum time, it is determined that the actual vacuum time is not abnormal; When the set vacuum time is greater than the actual vacuum time, and / or the sum of the set vacuum time and the third tolerance time is less than the actual vacuum time, it is determined that the actual vacuum time is abnormal.

13. The battery baking method according to any one of claims 7 to 8, or 10 to 12, characterized in that Verifying the vacuum degree of the overall process data includes: Determining the maximum target vacuum degree and the minimum target vacuum degree from the overall process data; When the maximum target vacuum degree and the minimum target vacuum degree meet the set vacuum degree, it is determined that the vacuum degree verification is successful.

14. The battery baking method according to claim 13, wherein Determining the maximum target vacuum degree and the minimum target vacuum degree from the overall process data includes: Determining the process data of the vacuum process in the baking process from the overall process data; Dividing the process data of the vacuum process according to the number of breaths to obtain the process data under each breath; Determining the maximum vacuum degree and the minimum vacuum degree of the process data under each breath; Comparing the maximum vacuum degrees under each breath to obtain the maximum target vacuum degree; Comparing the minimum vacuum degrees under each breath to obtain the minimum target vacuum degree.

15. The battery baking method according to any one of claims 1 to 2, or 4 to 5, or 7 to 8, or 10 to 12, or 14, characterized in that, The battery baking method further includes: In response to the process start request for the battery triggered by the baking control device, obtaining the identifier of the carrier carrying the battery and the identifier of the battery from the baking control device; Verifying the identifier of the carrier and the identifier of the battery to determine whether the identifier of the carrier and the identifier of the battery are abnormal; When both the identifier of the carrier and the identifier of the battery are normal, sending a confirmation instruction for the process start request to the baking control device.

16. A battery baking system, characterized in that, The battery baking system includes a baking control device and a host computer; The baking control device is used to determine the process state corresponding to each process in the baking process and the process data of each process during the baking process of the battery to be baked; Writing the process state corresponding to each process and the process data of each process into the storage location for interaction with the host computer; performing outbound processing on the baked battery based on the furnace-out verification result of the baked battery sent by the host computer; The host computer is used to obtain the process state corresponding to each process and the process data of each process from the storage location in the baking control device; Verifying and storing the process data of each process based on the process state corresponding to each process; after the baking process is completed, performing furnace-out verification on the baked battery based on the overall process data; the overall process data includes the process data of all processes in the baking process. The out-of-furnace verification includes one or more of data volume verification, process verification, and performance verification.

17. The battery baking system according to claim 16, characterized in that, The battery baking system includes a grasping device and a baking cavity; the grasping device is used to grasp the battery into the baking cavity; the baking cavity is used to perform a baking process on the battery.

18. The battery baking system according to claim 17, wherein The baking cavity includes multiple layers of core storage components, and each layer of core storage components is provided with a temperature sensor; the baking cavity is provided with at least one pressure sensor; The temperature sensor is used to detect the temperature of the battery in each layer of core storage components under each process; the pressure sensor is used to detect the pressure of the battery in the baking cavity under each process.

19. The battery baking system according to any one of claims 16 to 18, characterized in that, The battery baking system includes a carrier; the carrier is used to transfer the battery to a position for triggering a process start request for the battery.

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