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CN116774117B - Magnetic substance tracking method and device for lithium battery material preparation process - Google Patents

Magnetic substance tracking method and device for lithium battery material preparation process Download PDF

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CN116774117B
CN116774117B CN202311061529.XA CN202311061529A CN116774117B CN 116774117 B CN116774117 B CN 116774117B CN 202311061529 A CN202311061529 A CN 202311061529A CN 116774117 B CN116774117 B CN 116774117B
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magnetic substance
demagnetizing
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lithium battery
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CN116774117A (en
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蒋明川
李源林
饶才继
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Husong Intelligent Equipment Taicang Co ltd
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    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes

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Abstract

The application provides a magnetic substance tracking method and a device in a lithium battery material preparation process, and relates to the technical field of magnetic substance detection, wherein the method comprises the following steps: acquiring initial magnetic substance content of the preparation materials in each batch in the preparation process of the lithium battery material; the batch is a batch corresponding to the prepared material passing through each material device, and the respective demagnetizing capability information of the corresponding target demagnetizing equipment in each batch is obtained; based on the initial magnetic substance content and the demagnetizing capability information, the overcurrent magnetic substance content of the prepared material in each batch is respectively obtained; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch. The application can realize the on-line tracking of the content of the magnetic substance in batch production, improve the detection efficiency of the abnormal problem of the magnetic substance, quickly find out batches and corresponding equipment which possibly have problems, and is beneficial to the targeted improvement of production links.

Description

Magnetic substance tracking method and device for lithium battery material preparation process
Technical Field
The application relates to the technical field of magnetic substance detection, in particular to a magnetic substance tracking method and a magnetic substance tracking device in a lithium battery material preparation process.
Background
Lithium battery materials, i.e., materials for preparing lithium batteries, include positive electrode materials such as lithium cobalt oxide, lithium nickel oxide, lithium iron phosphate, etc., constituting lithium batteries, and negative electrode materials such as graphite, mesophase Carbon Microspheres (MCMB), petroleum coke, etc., constituting lithium batteries, and electrolyte solutions, etc. In the preparation process of the positive electrode material, magnetic substances, such as iron, cobalt, nickel and the like, are inevitably introduced, and the magnetic substances can cause the performance of the lithium ion battery to be reduced, and even shorten the service life of the lithium ion battery. Therefore, it is necessary to perform demagnetization and detection of the magnetic substance during the production process.
However, in the preparation process of the lithium battery material, the preparation process comprises a plurality of batches, so that when the finished product cannot meet the compliance requirement of the magnetic substance, the problem of the specific production link is difficult to track, and meanwhile, equipment which may have problems in the production process cannot be identified.
In the related art, in the preparation process of lithium battery materials, offline detection is performed by setting some offline detection points and sampling the materials at the offline detection points, so as to realize the detection of magnetic substances at the corresponding offline detection points, and the detection mode mainly aims at the detection of the production state corresponding to the offline detection points, but is difficult to realize the tracking of the magnetic substances in the whole production link.
Disclosure of Invention
The application provides a magnetic substance tracking method and a magnetic substance tracking device for a lithium battery material preparation process, which are used for at least solving one of the technical problems.
According to an aspect of the present application, there is provided a magnetic substance tracking method in a lithium battery material preparation process, including:
acquiring initial magnetic substance content of the preparation materials in each batch in the preparation process of the lithium battery material; the batch is a batch corresponding to each material preparation device, wherein each material preparation device is provided with a corresponding target demagnetizing device, and the target demagnetizing device is used for adsorbing magnetic substances in the material preparation device passing through the corresponding material preparation device;
respectively acquiring the demagnetizing capability information of the corresponding target demagnetizing equipment in each batch for the prepared materials passing through the corresponding material device; the demagnetizing capability information includes at least one of the following information: the adsorption volume, adsorption distance and adsorption overflow speed of the magnetic substance;
acquiring the content of magnetic substances adsorbed by the target demagnetizing equipment based on the demagnetizing capability information, and acquiring the content of the overcurrent magnetic substances of the prepared materials in each batch based on the initial magnetic substance content and the adsorbed magnetic substance content; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch.
In one embodiment, the method further comprises:
respectively acquiring the occupation time of the corresponding target demagnetizing equipment in each batch in the batch;
based on the content of the overcurrent magnetic substance in each batch, the process qualification of each batch in the preparation process of the lithium battery material is analyzed, and the method comprises the following steps:
based on the occupation time and the content of the overcurrent magnetic substances in each batch, analyzing time change curve information of the content of the overcurrent magnetic substances; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the time change curve information of the content of the overcurrent magnetic substance.
In one embodiment, the method for respectively obtaining the occupation time of the corresponding target demagnetizing equipment in each batch in the batch comprises the following steps:
for each batch, determining the starting time and the ending time of the batch passing through the corresponding target demagnetizing equipment based on the preset transfer logic of the batch, and acquiring the occupation time of the corresponding target demagnetizing equipment under the batch based on the starting time and the ending time.
In one embodiment, the method for respectively obtaining the demagnetizing capability information of the corresponding target demagnetizing equipment for the prepared material passing through the corresponding material device in each batch includes:
for each batch, acquiring operation data of corresponding target demagnetizing equipment and/or basic information of magnetic substances in the prepared materials, and acquiring demagnetizing energy information of the target demagnetizing equipment based on the operation data and the basic information of the magnetic substances;
Wherein the operational data includes at least magnetic field strength or current strength; and/or, the magnetic substance basic information includes at least one of the following information: the volume of the magnetic substance, the distance between the magnetic substance and the target demagnetizing device, and the overflow speed of the magnetic substance.
In one embodiment, the method further comprises:
respectively acquiring predetermined demagnetization standard points in each batch, triggering off-line demagnetization detection tasks in corresponding batches based on the demagnetization standard points to extract corresponding preparation materials at the demagnetization standard points, and detecting the reference content of the excessive magnetic substances of the corresponding preparation materials;
for each batch, acquiring a detection result of the reference content of the overcurrent magnetic substance corresponding to the offline demagnetization detection task;
based on the content of the overcurrent magnetic substance in each batch, the process qualification of each batch in the preparation process of the lithium battery material is analyzed, and the method comprises the following steps:
and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the detection results of the content of the overcurrent magnetic substance and the reference content of the overcurrent magnetic substance in each batch.
In one embodiment, triggering an offline demagnetization detection task under a corresponding lot based on a demagnetization standard point comprises:
And for each batch, acquiring response information of the prepared materials passing through the demagnetization standard point under the batch, and triggering an offline demagnetization detection task based on the response information.
In one embodiment, the method further comprises:
after triggering the demagnetization detection task, generating a tracking identification code, and identifying the offline demagnetization detection task based on the tracking identification code.
According to a second aspect of the present application, there is provided a magnetic substance tracking device for a lithium battery material manufacturing process, comprising:
the first acquisition module is used for acquiring initial magnetic substance contents of the prepared materials in the preparation process of the lithium battery materials in batches corresponding to the material devices respectively; the batch is a batch corresponding to each material preparation device, wherein each material preparation device is provided with a corresponding target demagnetizing device, and the target demagnetizing device is used for adsorbing magnetic substances in the material preparation device passing through the corresponding material preparation device;
the second acquisition module is used for respectively acquiring the respective demagnetizing capability information of the corresponding target demagnetizing equipment in each batch; wherein the demagnetizing capability information at least comprises one of the following information: the adsorption volume, adsorption distance and adsorption overflow speed of the magnetic substance;
The analysis module is used for acquiring the content of the magnetic substance adsorbed by the target demagnetizing equipment based on the demagnetizing capability information and acquiring the content of the overcurrent magnetic substance of the prepared material in each batch based on the initial magnetic substance content and the adsorbed magnetic substance content; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch.
According to a third aspect of the present application, there is provided an electronic device comprising: a memory and a processor;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored in the memory to cause the electronic device to perform a method for tracking magnetic substances in a lithium battery material preparation process.
According to a fourth aspect of the present application, there is provided a computer-readable storage medium having stored therein computer-executable instructions for implementing a magnetic substance tracking method for a lithium battery material preparation process when the computer-executable instructions are executed by a processor.
According to the magnetic substance tracking method and the magnetic substance tracking device for the lithium battery material preparation process, corresponding demagnetizing capability information is obtained in real time for each batch of demagnetizing equipment, the initial magnetic substance content of each batch and the demagnetizing capability information of the corresponding demagnetizing equipment are combined, on-line tracking of the magnetic substances of each batch is realized, the state corresponding to a certain point is detected instead of an off-line detection mode, the magnetic substance content in batch production is tracked by taking batch production as a whole, the detection efficiency of abnormal problems of the magnetic substances can be improved, batches and corresponding equipment which possibly have problems in the production process can be found rapidly, and the method is favorable for improving production links in a targeted manner.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic diagram of a magnetic substance detection method in a lithium battery material preparation process in the related art;
fig. 2 is a schematic flow chart of a magnetic substance tracking method in a preparation process of a lithium battery material according to an embodiment of the present application;
FIG. 3 is a second flow chart of a magnetic substance tracking method in the preparation process of the lithium battery material according to the embodiment of the application;
fig. 4 is a schematic flow chart of a magnetic substance tracking method in another preparation process of a lithium battery material according to an embodiment of the present application;
fig. 5 is a schematic flow chart of a magnetic substance tracking method in a preparation process of a lithium battery material according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a possible application scenario provided by an exemplary embodiment of the present application;
fig. 7 is a schematic diagram of a magnetic substance tracking device in a preparation process of a lithium battery material according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
Because the preparation process of the lithium battery material comprises a plurality of preparation processes, when the finished product can not meet the compliance requirement of the magnetic substance, the specific production link is difficult to track, and meanwhile, equipment which is likely to be problematic in the production process can not be identified.
Taking a preparation flow of lithium iron phosphate as an example, the process flow for preparing the lithium iron phosphate mainly comprises the following stages: raw material preparation, mixing preparation, calcination treatment, grinding treatment, electrochemical treatment and post-treatment. Wherein, raw material preparation requires preparation of ferric phosphate and lithium carbonate; the mixing preparation is to mix the raw materials according to a certain proportion, add water and stir to form paste; the calcination treatment is to put the obtained paste into a high-temperature oven for drying treatment; the grinding treatment is that the calcined lithium iron phosphate crystal is sent into a mill for grinding treatment; the electrochemical treatment is to put the grinded lithium iron phosphate into an electrolytic tank and add electrolyte; the post-treatment is to separate and wash the lithium iron phosphate crystal after the electrochemical treatment in the modes of centrifugation, filtration and the like to remove impurities. In each stage, one batch or multiple batches of materials can be put in each stage, and magnetic substances such as iron, cobalt and nickel can be generated in each stage, so that the magnetic substances need to be removed and detected to ensure that the magnetic substances in the prepared lithium iron phosphate meet compliance requirements.
In the related art, as shown in fig. 1, in the preparation process of the lithium battery material, by setting some key off-line detection points (a, b) in the whole production process, sampling the material at the off-line detection points and adopting an off-line detection mode, the detection mode mainly aims at the detection of the off-line detection point corresponding to the production state, but does not track the magnetic substance based on the angle of batch production, and is difficult to track the magnetic substance in the whole production link. In addition, the detection mode needs to sample materials for multiple times and detect the materials by using a special detection device, so that the detection process of the magnetic substances is complex, the efficiency is low, and the preparation progress of the lithium battery material is easily influenced.
In view of the above, the embodiment of the application provides a magnetic substance tracking method and a device for a lithium battery material preparation process, which are implemented by acquiring initial magnetic substance contents of preparation materials in each batch in the lithium battery material preparation process; the batch is a batch corresponding to each material preparation device, wherein each material preparation device is provided with a corresponding target demagnetizing device, and the target demagnetizing device is used for adsorbing magnetic substances in the material preparation device passing through the corresponding material preparation device; respectively acquiring respective demagnetizing capability information of corresponding target demagnetizing equipment in each batch; the demagnetizing capability information includes at least one of the following information: the adsorption volume, adsorption distance and adsorption overflow speed of the magnetic substance; based on the initial magnetic substance content and the demagnetizing capability information, the overcurrent magnetic substance content of the prepared material in each batch is respectively obtained; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch. In the process, corresponding demagnetizing capability information is acquired in real time for each batch of demagnetizing equipment, the initial magnetic substance content of each batch and the demagnetizing capability information of the corresponding demagnetizing equipment are combined, online detection of the magnetic substances of each batch is realized, an offline detection mode is replaced to detect the state corresponding to a certain point, batch production is taken as a whole, the magnetic substance content in batch production is tracked, the detection efficiency of abnormal magnetic substance problems can be improved, batches and corresponding equipment which possibly have problems in the production process can be found rapidly, and production improvement on production links is facilitated.
The following explanation is made in connection with an application scenario, and the magnetic substance tracking method and apparatus for a lithium battery material preparation process according to the embodiments of the present application may be applied to an application scenario for lithium battery preparation, and in an exemplary manner, an execution subject of the method according to the embodiments of the present application may be a server, and more particularly, for example, a server of a lithium battery manufacturer, and the following description is made by using the server as an execution subject of the method according to the embodiments of the present application. Optionally, in the lithium battery material preparation scenario, the lithium battery material preparation method comprises a terminal device and a server, wherein the terminal device and the server are connected through a wired or wireless network, the terminal device can be an upper computer on a production line, each process flow of lithium battery material preparation can be controlled, and the preparation state of lithium battery material preparation can be monitored in real time. The preparation of the lithium battery material comprises the preparation of lithium iron phosphate, and when the preparation of the lithium iron phosphate is started, the terminal equipment sends starting information of the preparation process of the lithium iron phosphate to the server; and the server responds to the starting information, tracks the magnetic substance content in the lithium iron phosphate preparation process by combining the demagnetizing capability of the demagnetizing equipment in each batch, and analyzes the process qualification of each batch in the lithium battery material preparation process by utilizing the overcurrent magnetic substance content in each batch. Alternatively, during the above-described magnetic substance content tracking process, the server takes on primary computing work, the terminal device takes on secondary computing work, or the server or the terminal can take on computing work alone, respectively.
The terminal device may include, but is not limited to, a computer, a smart phone, a tablet computer, an electronic book reader, a dynamic image expert compression standard audio layer 3 (Moving Picture experts group audio layer III, MP3 for short) player, a dynamic image expert compression standard audio layer 4 (Moving Picture experts group audio layer IV, MP4 for short) player, a portable computer, a car computer, a wearable device, a desktop computer, a set-top box, a smart television, and the like.
The server may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (Content Delivery Network, CDN), basic cloud computing services such as big data and artificial intelligent platforms, and the like.
Alternatively, the number of the terminal devices or the servers may be more or less, which is not limited in the embodiment of the present application. In some embodiments, the terminal device and the server may also be used as nodes in a blockchain system, and synchronize the lithium battery material preparation and magnetic substance tracking process to other nodes of the blockchain, so as to facilitate the subsequent traceability of the lithium battery material preparation process.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems by taking the application to a server as an example, and referring to the accompanying drawings and specific embodiments. It should be noted that these specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 2 is a schematic flow chart of a magnetic substance tracking method in a preparation process of a lithium battery material according to an embodiment of the present application, including steps S201 to S204:
step S201, obtaining initial magnetic substance content of the prepared material in each batch in the preparation process of the lithium battery material; the batch is a batch corresponding to the prepared material passing through each material device, wherein each material device is provided with a corresponding target demagnetizing device, and the target demagnetizing device is used for adsorbing magnetic substances in the prepared material passing through the corresponding material device.
Optionally, each batch may include one or more material devices, where the material device corresponding to each batch is provided with a target demagnetizing device, and operating parameters of the demagnetizing devices of different batches or types of the demagnetizing devices may be the same or different. Optionally, the demagnetizing device may be a ring demagnetizing device, which includes a ring demagnetizing body and one or more magnetic bars disposed inside the ring demagnetizing body, so as to shorten a distance between the demagnetizing device and the overcurrent, and further improve the demagnetizing performance.
In one implementation, the initial magnetic substance content may be obtained from a host computer, for example, where the initial magnetic substance content of the prepared material before discharging is recorded, or the material may be sampled and detected to obtain the initial magnetic substance content before the lithium battery material preparation material is put into the material device.
In this embodiment, the initial magnetic substance content of each batch includes the initial magnetic substance content of the preparation material entering the first batch or the initial magnetic substance content of the previous batch entering the next batch. By utilizing the initial magnetic substance content, the overcurrent magnetic substance content in the corresponding batch can be calculated in the subsequent step by combining the demagnetizing capability information of the demagnetizing equipment in the corresponding batch.
It should be noted that, in combination with the prior art and practical application, a person skilled in the art may perform adaptive division on the batches in the preparation process in advance, for example, divide a material device (i.e., equipment) that is easy to have a problem of abnormal magnetic material content (such as easy to introduce new magnetic material) into one batch, divide a plurality of material devices that are not easy to have a problem of magnetic material content into one batch, and the dividing process and the number of the batches in the preparation process in this embodiment are not limited specifically.
Step S202, respectively acquiring respective demagnetizing capability information of corresponding target demagnetizing equipment in each batch; the demagnetizing capability information includes at least one of the following information: the adsorption volume, the adsorption distance and the adsorption overcurrent speed of the magnetic substance.
In the related art, the setting of the demagnetizing equipment is preselected according to the technological requirement and the production experience, and usually only the magnitude of magnetic force can be controlled without considering the magnitude of the demagnetizing capability under specific working conditions. The permanent magnet demagnetizing equipment has only set parameters when leaving the factory, no demagnetizing capability detection means exists, the electromagnetic demagnetizing equipment has only current, and the demagnetizing capability cannot be displayed in real time according to the demagnetizing parameters set by the nameplate.
In the embodiment, corresponding magnetic removal capability information is obtained in real time for each batch of magnetic removal equipment in the preparation process, and the magnetic removal capability is quantified by using indexes such as the adsorption volume, the adsorption distance and the adsorption overcurrent speed of the magnetic substances, and the magnetic removal capability information of the magnetic removal equipment is combined to realize the online detection of the magnetic substances in each batch. The demagnetizing capability may be any index as described above, or may be a combination of a plurality of indexes (in product form or weighted form, or other mathematical forms). In some embodiments, other indicators for expressing the adsorption capacity of the demagnetizing device may be included in addition to the above indicators, which is not particularly limited in this embodiment.
In this way, instead of the off-line detection method, only the state corresponding to a certain point is detected, but the overall on-line detection method of the magnetic substance content in batch production is considered, and in batch production, if new magnetic substances are introduced into which batches, a problem can be quickly found. For example, when a material device corresponding to a certain batch (for example, a polishing batch) is entered, the polishing device is a device made of iron, iron in the polishing device is mixed in the polishing process, new magnetic substances are introduced in the process, the magnetic substances introduced in the polishing batch can be quickly positioned according to the batch tracking mode, and when the content of the magnetic substances in a finished product does not reach the standard due to the introduction of the magnetic substances, corresponding equipment in the batch is replaced or overhauled in time.
In one embodiment, step S202 may respectively obtain respective demagnetizing capability information of the corresponding target demagnetizing device in each batch, and may include the following steps:
for each batch, acquiring operation data of corresponding target demagnetizing equipment and/or basic information of magnetic substances in the prepared materials, and acquiring demagnetizing energy information of the target demagnetizing equipment based on the operation data and the basic information of the magnetic substances;
Wherein the operational data includes at least magnetic field strength or current strength; and/or, the magnetic substance basic information includes at least one of the following information: the volume of the magnetic substance, the distance between the magnetic substance and the target demagnetizing device, and the overflow speed of the magnetic substance.
It is understood that the demagnetizing device includes a permanent magnetic demagnetizing device and an electromagnetic demagnetizing device, which are different in that the permanent magnetic demagnetizing device is made of magnetic material (such as magnetic alloy, ceramic magnet, etc.), the electromagnetic demagnetizing device is formed by winding a coil around the outside of the iron core, and the magnetism is generated by the power-on current, and the magnetism disappears immediately after the power-off.
In one implementation, related meters (such as a magnetic field intensity measuring instrument and an ammeter) can be added to the pipeline or the demagnetizing equipment to measure the magnetic field intensity or the current intensity of the demagnetizing equipment, and the information such as the magnetic substance volume of the demagnetizing equipment, the distance between the magnetic substance and the target demagnetizing equipment, the overcurrent speed of the magnetic substance and the like can be obtained by grabbing data in a production and manufacturing system (Manufacturing Execution System, MES) or a data acquisition and monitoring control system (Supervisory Control And Data Acquisition, SCADA). The embodiment can acquire the demagnetizing capability information of the demagnetizing equipment in real time by utilizing the information.
In one implementation, the magnetic removal capability information under different lithium battery material preparation working conditions can be obtained according to a large amount of experimental data, specifically, taking permanent magnet magnetic removal equipment as an example, in the first group of experimental data, under the condition that the magnetic field strength is A (or B/C/…/N), the volumes of magnetic substances in the lithium battery material preparation materials are x1, x2, … … and xn (enough samples), other variables are the same (for example, the distance and the overflow speed are the same), and how large volume of magnetic substances can be adsorbed by the magnetic removal equipment under different magnetic field strengths is observed; in the second set of experimental data, under the condition that the observed magnetic field intensity is A (or B/C/…/N), the distances between magnetic substances in the lithium battery material preparation material and the demagnetizing equipment are L1, L2, … … and Ln (enough samples), other variables are the same, and the demagnetizing equipment can absorb the magnetic substances at the large distances under the condition that different magnetic field intensities are observed; in the third set of experimental data, under the condition that the observed magnetic field intensity is A (or B/C/…/N), other variables are the same, and the over-current velocity of the magnetic substance in the lithium battery material preparation material (namely the over-current velocity of the lithium battery material preparation material) is V1, V2, … … and Vn (enough samples) respectively, so that the magnetic substance with the over-current velocity can be adsorbed by the demagnetizing equipment under different magnetic field intensities; in the fourth set of experimental data, under the condition that the observed magnetic field intensity is A (or B/C/…/N), the magnetic substances of the lithium battery material are different in volume, distance and over-current velocity every two variables or are different (enough samples), and how large the magnetic substances of the volume, distance and over-current velocity can be adsorbed by the demagnetizing equipment under the condition that the observed magnetic field intensity is different. The magnetic removal capability information of the magnetic removal equipment under various working conditions (such as magnetic field intensity and lithium battery material preparation materials) can be obtained.
Further, a great amount of priori data (such as the above experimental data) can be used for training a neural network model or a machine learning model, and the neural network model or the machine learning model is used for predicting the demagnetizing capability information of the demagnetizing equipment under various working conditions. Specifically, in the actual preparation process of the lithium battery material, the operation data of the target demagnetizing equipment under the actual working condition and/or the basic information of the magnetic substances in the lithium battery material preparation material can be obtained in real time, and the data are input into a trained neural network model or a machine learning model, so that the corresponding demagnetizing energy information under the working condition can be rapidly output.
Step S203, based on the initial magnetic substance content and the demagnetizing capability information, respectively obtaining the overcurrent magnetic substance content of the preparation material in each batch; step S204, analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch.
It can be understood that for each batch, after the demagnetizing capability information of the demagnetizing device is obtained, the amount of the magnetic substance absorbed by the demagnetizing device in the batch can be obtained, and the amount of the overcurrent magnetic substance in the batch can be detected by using the difference between the initial magnetic substance content and the magnetic substance content absorbed by the demagnetizing device.
In one implementation, taking the demagnetizing capability information as an adsorption volume of the magnetic substance as an example, since the volume of the magnetic particles is known (the MES or SCADA data is acquired in real time, or the volume information of the magnetic particles is carried in the initial magnetic substance content) and the adsorption volume of the demagnetizing device is acquired in real time in the above steps, how many (adsorption volume) magnetic particles in the initial magnetic substance content can be adsorbed by the demagnetizing device can be directly obtained, the density of the magnetic substance is known (for example, the density of Fe is 7.86 g/cm), the mass can be calculated according to the volume and the density, and then the content of the adsorbed magnetic substance can be obtained, and then the content of the excessive magnetic substance passing through the material device (the content of excessive magnetic substance=the initial magnetic substance content-the content of the magnetic substance adsorbed by the target demagnetizing device) can be detected in combination with the initial magnetic substance content. Further, in order to improve the detection accuracy, other information of the magnetic removal capability may be combined, for example, an adsorption distance and/or an adsorption overflow speed of the magnetic substance (at how large a distance and/or an overflow speed, how large a volume of the magnetic substance can be adsorbed, where the volume, the distance and the overflow speed can be obtained by capturing MES or SCADA data in real time), so as to obtain the content of the magnetic substance adsorbed by the target magnetic removal device, which is not described in detail. Therefore, in the process of demagnetizing the lithium battery material preparation material, the content of the overcurrent magnetic substance can be detected according to the content of the initial magnetic substance and the demagnetizing capability information under the working condition.
In one implementation, in the production stage, a person skilled in the art may preset the content threshold of the over-current magnetic substance in each batch, and compare the content of the over-current magnetic substance in each batch with the corresponding content threshold to analyze the process qualification of each batch, for example, the content of the over-current magnetic substance in a certain batch exceeds the corresponding content threshold of the batch, consider that the process of the content of the magnetic substance in the batch is not qualified, and need to enter a further equipment detection link, and the manager decides whether to replace or overhaul the equipment or the device in the batch.
In another implementation, by comparing the amount of the over-current magnetic substance in each batch according to the amount of the over-current magnetic substance in all the batches, for example, the amount of the magnetic substance in the upstream batch is generally smaller than the amount of the magnetic substance in the downstream batch, if the amount of the downstream magnetic substance is instead greater than the amount of the magnetic substance in the upstream batch, the process failure of the amount of the magnetic substance in the downstream batch can be primarily confirmed, and a detection link needs to be entered, so that a manager decides whether to replace or overhaul the equipment or the device in the batch.
In other realizations, other manners may be adopted to analyze the process eligibility of each batch in the preparation process of the lithium battery material, and the specific analysis process is not specifically limited in this embodiment.
In order to effectively improve the tracking efficiency of the magnetic substance, as shown in fig. 3, the present embodiment optimizes the tracking analysis process of the magnetic substance in combination with the occupation time of the demagnetizing apparatus, specifically, the following steps S301 and S302 may be included in addition to the above steps, and the step S204 may be further divided into the step S204a.
Step S301, respectively acquiring the occupation time of the corresponding target demagnetizing equipment in each batch in the batch; step S302, analyzing the time change curve information of the content of the overcurrent magnetic substance based on the occupied time and the content of the overcurrent magnetic substance in each batch.
In this embodiment, by acquiring the occupation time of the demagnetizing device, the content of the over-current magnetic substance corresponding to the demagnetizing device in the occupation time can be acquired, and the change of the content of the over-current magnetic substance in the whole production process can be more intuitively described.
Alternatively, one or a plurality of demagnetizing devices may be adopted for different batches, for example, different batches are prepared by using the same material device, and in this scenario, the prepared materials are put into the material device under the corresponding batches, so as to complete the preparation process of different batches.
Specifically, in step S301, the acquiring the occupation time of the corresponding target demagnetizing device in each batch in the batch may include the following steps:
for each batch, determining the starting time and the ending time of the batch passing through the corresponding target demagnetizing equipment based on the preset transfer logic of the batch, and acquiring the occupation time of the corresponding target demagnetizing equipment under the batch based on the starting time and the ending time.
In this embodiment, the preset transfer logic may include a transfer time and a transfer node (material device) of the prepared material in each production link. It should be noted that, those skilled in the art may adaptively set the preset transition logic in combination with the prior art and practical application.
Step S204a, analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the time change curve information of the content of the overcurrent magnetic substance.
In this embodiment, by combining the occupation time of the demagnetizing device, the magnetic substances in the batch are tracked, so that the comprehensive efficiency (Overall Equipment Effectiveness, OEE) analysis of the device can be conveniently performed, and the efficiency of the whole lithium battery material preparation process is further improved.
Referring to fig. 4, fig. 4 is a schematic flow chart of a magnetic substance tracking method in another preparation process of a lithium battery material according to an embodiment of the present application, and on the basis of the above embodiment, an off-line detection mode is combined in addition to on-line tracking of a magnetic substance, so as to improve the detection accuracy of the magnetic substance content in the production process. Specifically, the method provided by the present embodiment further includes step S401 and step S402 in addition to the above-described steps S201 to S204, and further divides step S204 into step S401 and step S402, and further divides step S204 into step S204b.
Step S401, respectively obtaining predetermined demagnetization standard points in each batch, triggering an offline demagnetization detection task in the corresponding batch based on the demagnetization standard points, so as to extract the corresponding preparation materials at the demagnetization standard points, and detecting the reference content of the overcurrent magnetic substances of the corresponding preparation materials.
It should be noted that, a person skilled in the art may set the demagnetization standard point in combination with the prior art and practical application. The number and the positions of the demagnetization standard points are not particularly limited in this embodiment, and for example, one demagnetization standard point may be set every two or less batches.
Specifically, the triggering of the offline demagnetization detection task under the corresponding lot based on the demagnetization standard point in the step S401 may include the following steps:
and for each batch, acquiring response information of the prepared materials passing through the demagnetization standard point under the batch, and triggering an offline demagnetization detection task based on the response information.
In one implementation, a trigger may be set at a demagnetization standard point, and when a batch of material passes the demagnetization standard point, response information of the trigger is received and an offline detection task is triggered. After the task is triggered, the production line manager extracts the corresponding preparation materials at the demagnetization standard point, and detects the reference content of the overcurrent magnetic substances of the corresponding preparation materials in an off-line detection mode, so that the off-line detection can be carried out by adopting the prior art.
Step S402, acquiring a detection result of the reference content of the overcurrent magnetic substance corresponding to the offline demagnetization detection task for each batch;
step S204b, analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the detection results of the content of the over-current magnetic substance and the reference content of the over-current magnetic substance in each batch.
It can be understood that, because the demagnetizing device is used for a certain time (for example, the permanent magnetic demagnetizing device is used for a certain time, the device body can absorb more magnetic substances), or under special working conditions (for example, the magnetic impurity substances in the preparation materials such as copper, aluminum and the like are more), the demagnetizing capability of the demagnetizing device can be affected, and the accuracy of the detection result is further affected.
In one implementation, for a corresponding lot, the difference between the content of the over-current magnetic substance and the reference content of the over-current magnetic substance is too large (for example, exceeds a certain threshold value), the detection result of the lot may be considered to be inaccurate, the process of the lot may be determined to be unqualified, and the demagnetizing equipment needs to be replaced or filtered.
Referring to fig. 5, fig. 5 is a flow chart of a magnetic substance tracking method in a preparation process of a lithium battery material according to an embodiment of the present application, and the embodiment improves matching efficiency between online tracking and offline detection by generating a tracking code based on another method provided in the above embodiment. Specifically, the method includes the following step S501 in addition to the steps of the above-described embodiments.
Step S501, after triggering the demagnetization detection task, a tracking identification code is generated, and the offline demagnetization detection task is identified based on the tracking identification code.
Specifically, in step S402, for each batch, a detection result of the reference content of the overcurrent magnetic substance corresponding to the offline demagnetization detection task is obtained according to the tracking identifier.
In one implementation, when the lot passes the demagnetization standard point, the demagnetization detection task is automatically triggered, a unique tracking identification code is generated, and the offline demagnetization detection task is identified by the unique tracking identification code. The process can realize effective matching of the online tracking data and the offline detection data of the overcurrent magnetic substances in each batch, avoid data matching errors, and further influence the accuracy of analysis results.
In practical application, the management user can print the tracking code and paste the tracking code onto the detection container, wherein the detection container is used for sampling the preparation materials at the offline detection points, and different detection containers are used for detecting each offline detection point, so that the offline detection data of the offline detection point of a certain batch is prevented from being matched with the online tracking data of other batches.
For the understanding of the embodiment of the present application, as shown in fig. 6, taking the example that the lithium battery material preparation process is divided into 5 batches (1/2/3/4/5 batches), wherein the 5 batches include 4 material devices, one material device can flow into two batches, each material device 61 is provided with one demagnetizing device 62, the demagnetizing devices 62 in each material device 61 can be the same type of demagnetizing device or different demagnetizing devices, and a demagnetizing standard point c is set at the position of the batch 2, and the magnetic substance tracking scheme for setting the lithium battery material preparation process includes the following two stages:
on-line tracking stages S1-S3:
s1, determining the starting and ending time of each batch passing through the corresponding demagnetizing equipment according to the batch transfer logic, and extracting the occupation time of the demagnetizing equipment in the corresponding batch.
S2, capturing operation data of the demagnetizing equipment and basic information of magnetic substances in the current batch, (predefining weighting information of each parameter in combination with actual application or calculating the demagnetizing capability of the corresponding demagnetizing equipment of each batch through a related formula in combination with a mathematical algorithm), and calculating the content of the overcurrent magnetic substances in combination with the initial magnetic substance content of each batch.
S3, forming a curve along with time, analyzing the numerical variation of the magnetic substance content in the two batches before and after analysis, and carrying out tracking analysis on the variation of the magnetic substance content in each batch.
Offline detection stage S4-S7:
s4, setting a demagnetization standard point in the whole production system.
S5, when the batch passes through the standard point, automatically triggering a demagnetization detection task, printing a tracking code, attaching the tracking code to a detection container, and sampling and detecting.
S6, laboratory analysis is carried out, and a scanning code is input into a magnetic substance detection result (the reference content of the overcurrent magnetic substance) corresponding to the demagnetization standard point.
S7, forming a curve from the detection results of the batch, collecting online tracking data, forming batch tracking together, and finding out a production improvement point according to the analysis result.
In the embodiment, real-time tracking is performed according to batches, the precision is higher, the production improvement can be performed in a targeted manner, and the problem of magnetic substance abnormality of raw materials is reversely checked; the magnetic material management and control data of the coming materials and the finished products coming off line can be reserved, and the related data of the whole process can be reserved, so that a proving material is provided for downstream customers; the device comprises a magnetic substance control point in the lithium battery material production process, so that equipment which may have problems in the production process can be effectively detected; in addition, the process demagnetizer data are converted into the material online magnetic detection data, so that the demagnetizing performance of equipment can be mastered in real time, and better process control capability can be performed in time.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a magnetic substance tracking device in a preparation process of a lithium battery material according to an embodiment of the present application, including:
a first obtaining module 71, configured to obtain initial magnetic material contents of batches corresponding to the materials prepared by each material device in the preparation process of the lithium battery material; the batch is a batch corresponding to each material preparation device, wherein each material preparation device is provided with a corresponding target demagnetizing device, and the target demagnetizing device is used for adsorbing magnetic substances in the material preparation device passing through the corresponding material preparation device;
a second obtaining module 72, configured to obtain respective demagnetizing capability information of the corresponding target demagnetizing device in each batch; wherein the demagnetizing capability information at least comprises one of the following information: the adsorption volume, adsorption distance and adsorption overflow speed of the magnetic substance;
an analysis module 73 configured to obtain the overcurrent magnetic substance content of the preparation material under each batch, respectively, based on the initial magnetic substance content and the demagnetizing capability information; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch.
In one embodiment, the apparatus further comprises:
the third acquisition module is used for respectively acquiring the occupation time of the corresponding target demagnetizing equipment in each batch in the batch;
the analysis module 73 is specifically configured to analyze time-varying curve information of the content of the over-current magnetic substance based on the occupation time and the content of the over-current magnetic substance in each batch; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the time change curve information of the content of the overcurrent magnetic substance.
In one embodiment, the third obtaining module is specifically configured to determine, for each lot, a start time and an end time of the lot passing by the corresponding target demagnetizing device based on the preset transfer logic of the lot, and obtain, based on the start time and the end time, an occupation time of the corresponding target demagnetizing device under the lot.
In one embodiment, the second obtaining module 72 is specifically configured to obtain, for each batch, operation data of the corresponding target demagnetizing device and/or basic information of magnetic substances in the preparation material, and obtain the demagnetizing capability information of the target demagnetizing device based on the operation data and the basic information of the magnetic substances;
wherein the operational data includes at least magnetic field strength or current strength; and/or, the magnetic substance basic information includes at least one of the following information: the volume of the magnetic substance, the distance between the magnetic substance and the target demagnetizing device, and the overflow speed of the magnetic substance.
In one embodiment, the apparatus further comprises:
the fourth acquisition module is used for respectively acquiring the preset demagnetization standard points of each batch, triggering the offline demagnetization detection task of the corresponding batch based on the demagnetization standard points so as to extract the corresponding preparation materials at the demagnetization standard points and detecting the reference content of the overcurrent magnetic substances of the corresponding preparation materials;
the fifth acquisition module is used for acquiring a detection result of the reference content of the overcurrent magnetic substance corresponding to the offline demagnetization detection task for each batch;
the analysis module 73 is specifically configured to analyze the process eligibility of each batch in the preparation process of the lithium battery material based on the detection results of the content of the over-current magnetic substance and the reference content of the over-current magnetic substance under each batch.
In one embodiment, the triggering the offline demagnetization detection task under the corresponding batch based on the demagnetization standard point in the fourth acquisition module includes: and for each batch, acquiring response information of the prepared materials passing through the demagnetization standard point under the batch, and triggering an offline demagnetization detection task based on the response information.
In one embodiment, the apparatus further comprises:
the generation module is used for generating a tracking identification code after triggering the demagnetization detection task and identifying the offline demagnetization detection task based on the tracking identification code.
The relevant descriptions can be correspondingly understood by referring to the relevant descriptions and effects corresponding to the steps in the method embodiment, and are not repeated here.
The embodiment of the application correspondingly provides an electronic device, as shown in fig. 8, which comprises: a memory 81 and a processor 82;
memory 81 stores computer-executable instructions;
the processor 82 executes computer-executable instructions stored in the memory 81, so that the electronic device performs a magnetic substance tracking method of a lithium battery material preparation process, wherein the memory 81 and the processor 82 are connected through the bus 83.
The relevant descriptions can be correspondingly understood by referring to the relevant descriptions and effects corresponding to the steps in the method embodiment, and are not repeated here.
The embodiment of the application correspondingly provides a computer readable storage medium, wherein computer execution instructions are stored in the computer readable storage medium, and the computer execution instructions are used for realizing the magnetic substance tracking method of the lithium battery material preparation process when being executed by a processor.
The relevant descriptions can be correspondingly understood by referring to the relevant descriptions and effects corresponding to the steps in the method embodiment, and are not repeated here.
The computer readable storage medium may be, among other things, ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, e.g., the division of modules is merely a logical function division, and there may be additional divisions of actual implementation, e.g., multiple modules may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules illustrated as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to implement the solution of this embodiment.
In addition, each functional module in the embodiments of the present application may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one unit. The units formed by the modules can be realized in a form of hardware or a form of hardware and software functional units.
The integrated modules, which are implemented in the form of software functional modules, may be stored in a computer readable storage medium. The software functional modules described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or processor to perform some of the steps of the methods of the various embodiments of the application.
It should be understood that the above processor may be a central processing unit (Central Processing Unit, abbreviated as CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, abbreviated as DSP), application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile memory NVM, such as at least one magnetic disk memory, and may also be a U-disk, a removable hard disk, a read-only memory, a magnetic disk or optical disk, etc.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present application are not limited to only one bus or to one type of bus.
The storage medium may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). Of course, the processor and the storage medium may reside as discrete components in an electronic control unit or master control device.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. The magnetic substance tracking method for the preparation process of the lithium battery material is characterized by comprising the following steps of:
acquiring initial magnetic substance content of the preparation materials in each batch in the preparation process of the lithium battery material; the batch is a batch corresponding to each material preparation device, wherein each material preparation device is provided with a corresponding target demagnetizing device, and the target demagnetizing device is used for adsorbing magnetic substances in the material preparation device passing through the corresponding material preparation device;
respectively acquiring the demagnetizing capability information of the corresponding target demagnetizing equipment in each batch for the prepared materials passing through the corresponding material device; the demagnetizing capability information at least comprises one of the following information: the adsorption volume, adsorption distance and adsorption overflow speed of the magnetic substance;
acquiring the content of magnetic substances adsorbed by the target demagnetizing equipment based on the demagnetizing capability information, and acquiring the content of the overcurrent magnetic substances of the prepared materials in each batch based on the initial magnetic substance content and the adsorbed magnetic substance content; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch.
2. The method as recited in claim 1, further comprising:
respectively acquiring the occupation time of the corresponding target demagnetizing equipment in each batch in the batch;
based on the content of the overcurrent magnetic substance in each batch, the process qualification of each batch in the preparation process of the lithium battery material is analyzed, and the method comprises the following steps:
based on the occupation time and the content of the overcurrent magnetic substances in each batch, analyzing time change curve information of the content of the overcurrent magnetic substances; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the time change curve information of the content of the overcurrent magnetic substance.
3. The method according to claim 2, wherein the obtaining the occupation time of the corresponding target demagnetizing device in each batch includes:
for each batch, determining the starting time and the ending time of the batch passing through the corresponding target demagnetizing equipment based on the preset transfer logic of the batch, and acquiring the occupation time of the corresponding target demagnetizing equipment under the batch based on the starting time and the ending time.
4. The method according to claim 1, wherein the obtaining, respectively, the demagnetizing capability information of the corresponding target demagnetizing devices in each batch for each prepared material passing through the corresponding material device includes:
For each batch, acquiring operation data of corresponding target demagnetizing equipment and magnetic substance basic information in a preparation material, and acquiring demagnetizing capability information of the target demagnetizing equipment based on the operation data and the magnetic substance basic information;
wherein the operational data includes at least a magnetic field strength or a current strength; the magnetic substance basic information at least comprises one of the following information: the magnetic substance volume, the distance between the magnetic substance and the target demagnetizing equipment and the overflow speed of the magnetic substance.
5. The method of any one of claims 1-4, further comprising:
respectively acquiring a preset demagnetization standard point under each batch, triggering an offline demagnetization detection task under the corresponding batch based on the demagnetization standard point so as to extract the corresponding preparation material at the demagnetization standard point and detect the reference content of the overcurrent magnetic substance of the corresponding preparation material;
for each batch, acquiring a detection result of the reference content of the overcurrent magnetic substance corresponding to the offline demagnetization detection task;
based on the content of the overcurrent magnetic substance in each batch, the process qualification of each batch in the preparation process of the lithium battery material is analyzed, and the method comprises the following steps:
And analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the detection results of the content of the overcurrent magnetic substance and the reference content of the overcurrent magnetic substance in each batch.
6. The method of claim 5, wherein triggering an offline demagnetization detection task for a corresponding lot based on the demagnetization standard point comprises:
and for each batch, acquiring response information of the prepared material passing through the demagnetization standard point under the batch, and triggering an offline demagnetization detection task based on the response information.
7. The method as recited in claim 6, further comprising:
and generating a tracking identification code after triggering the offline demagnetization detection task, and identifying the offline demagnetization detection task based on the tracking identification code.
8. The utility model provides a magnetic substance tracer of lithium electricity material preparation process which characterized in that includes:
the first acquisition module is used for acquiring initial magnetic substance contents of the prepared materials in the preparation process of the lithium battery materials in batches corresponding to the material devices respectively; the batch is a batch corresponding to each material preparation device, wherein each material preparation device is provided with a corresponding target demagnetizing device, and the target demagnetizing device is used for adsorbing magnetic substances in the material preparation device passing through the corresponding material preparation device;
The second acquisition module is used for respectively acquiring the demagnetizing capability information of the corresponding target demagnetizing equipment in each batch for the prepared materials passing through the corresponding material device; wherein the demagnetizing capability information at least comprises one of the following information: the adsorption volume, adsorption distance and adsorption overflow speed of the magnetic substance;
the analysis module is used for acquiring the content of the magnetic substance adsorbed by the target demagnetizing equipment based on the demagnetizing capability information and acquiring the content of the overcurrent magnetic substance of the prepared material in each batch based on the initial magnetic substance content and the adsorbed magnetic substance content; and analyzing the process qualification of each batch in the preparation process of the lithium battery material based on the content of the overcurrent magnetic substance in each batch.
9. An electronic device, comprising: a memory and a processor;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored in the memory, causing the electronic device to perform the magnetic substance tracking method of the lithium battery material manufacturing process of any one of claims 1 to 7.
10. A computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium, which when executed by a processor, is configured to implement the magnetic substance tracking method of the lithium battery material preparation process according to any one of claims 1 to 7.
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