CN117929217A

CN117929217A - Magnetic particle content detection system and detection method

Info

Publication number: CN117929217A
Application number: CN202410334303.0A
Authority: CN
Inventors: 汪志
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2024-03-22
Filing date: 2024-03-22
Publication date: 2024-04-26

Abstract

The application discloses a magnetic particle content detection system and a detection method. The magnetic component is used for generating magnetic induction signals when magnetic particles in the slurry to be detected pass through the magnetic component; the detection component is used for generating a first pulse signal according to the magnetic induction signal, carrying out waveform conversion and processing on the first pulse signal, generating a target current signal, determining a target current section to which the target current signal belongs, and determining the content of magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current section and the content of the magnetic particles. So improved the detection precision of magnetic particle content in the thick liquids, can promote detection efficiency simultaneously.

Description

Magnetic particle content detection system and detection method

Technical Field

The application relates to the technical field of batteries, in particular to a system and a method for detecting the content of magnetic particles.

Background

In the electrode material pulping process, most of equipment, logistics pipelines and the like which are in contact with materials are made of stainless steel, and long-term contact friction between the inner surface of the equipment and the materials, running abrasion of the equipment and friction of the materials in the transferring process of each process are likely to abrade and peel off magnetic particles such as stainless steel chips, so that the battery performance is greatly influenced and potential safety hazards are caused. Thus, it is necessary to detect and monitor the magnetic particles in the slurry.

However, the detection of the magnetic particle content of the slurry in the related art is complicated, and there is also a problem that the weak magnetism or the micrometer-sized magnetic metal particles are difficult to detect.

Disclosure of Invention

The application provides a system and a method for detecting the content of magnetic particles, which can solve the technical problems that the detection of the content of the magnetic particles of slurry is complex, the detection of weak magnetism or micron-sized magnetic metal particles is difficult to detect and the like in the related technology.

The technical scheme of the application is realized as follows:

In a first aspect, an embodiment of the present application provides a system for detecting a content of magnetic particles, where the system for detecting a content of magnetic particles includes a magnetic component and a detection component, and the magnetic component is disposed around a pipe of a slurry to be detected; wherein:

the magnetic component is used for generating magnetic induction signals when magnetic particles in the slurry to be detected pass through the magnetic component;

The detection component is used for generating a first pulse signal according to the magnetic induction signal, carrying out waveform conversion and processing on the first pulse signal, generating a target current signal, determining a target current section to which the target current signal belongs, and determining the content of magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current section and the content of the magnetic particles; wherein the working frequency of the first pulse signal meets the working frequency of a magnetic particle content detection system.

Through the technical means, the detection process of the content of the magnetic particles in the slurry can be simplified according to the detection system, the detection complexity is reduced, and the foreign matters of the magnetic particles in the slurry can be detected in time; in addition, after the target current signal is determined, the content of the magnetic particles in the slurry is determined according to the target current signal, so that the detection precision of the content of the magnetic particles in the slurry can be improved, the problem that the weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related art is solved, and meanwhile, the detection efficiency can be improved.

In some embodiments, the detection system of magnetic particle content further comprises a magnetic shielding system, wherein: the magnetic shielding system is arranged around the pipeline of the slurry to be detected, and the magnetic component is positioned inside the magnetic shielding system.

Through the technical means, the magnetic shielding system is used for reducing the detection influence of the external environment on the magnetic particles in the slurry to be detected, and avoiding the influence of electromagnetic signals in the external environment on the detection accuracy of the content of the magnetic particles.

In some embodiments, the detection component includes a pulse generation module, a waveform conversion module, a signal processing module, and a data analysis module, wherein: the pulse generation module is used for generating a first pulse signal according to the magnetic induction signal; the waveform conversion module is used for performing waveform conversion on the first pulse signal to obtain a target waveform signal; the signal processing module is used for filtering and amplifying the target waveform signal to obtain a target current signal; the data analysis module is used for determining a target current segment to which the target current signal belongs, and determining the content of the magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the content of the magnetic particles.

Through the technical means, the obtained first pulse signal is subjected to waveform conversion, filtering and amplification, the amplified target current signal is input into the data analysis module, and the magnetic particle content corresponding to the target current signal can be determined as the magnetic particle content in the slurry to be detected according to the target current segment to which the target current signal belongs and the mapping relation between the current signal corresponding to the target current segment and the magnetic particle content, so that the detection precision of the magnetic particle content in the slurry can be improved.

In some embodiments, the data analysis module is further configured to establish a mapping relationship between the current signal and the magnetic particle content corresponding to each of the at least one current segment based on a preset magnetic particle content reference.

By the technical means, the mapping relation between the current signal and the magnetic particle content is established in a segmented manner, and then the magnetic particle content in the slurry is determined according to the target current signal, so that the detection precision of the magnetic particle content in the slurry can be improved, for example, the precision of the magnetic particle content can reach ppb level, and the problem that weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related art is solved.

In some embodiments, the pulse generation module comprises a pulse generation circuit and a frequency adjustment circuit, wherein: the pulse generation circuit is used for generating a second pulse signal according to the magnetic induction signal; the frequency adjusting circuit is used for adjusting the frequency of the second pulse signal to obtain a first pulse signal, and the working frequency of the first pulse signal meets the working frequency of the magnetic particle content detection system.

By the above technical means, if the second pulse signal generated by the pulse generating circuit does not meet the operating frequency required by the detecting system, the frequency adjustment is required to be performed by the frequency adjusting circuit, for example, frequency division/frequency multiplication is performed, so that the operating frequency of the first pulse signal meets the operating frequency of the detecting system for the magnetic particle content.

In some embodiments, the signal processing module includes a detection circuit, a filter circuit, and an amplification circuit, wherein: the detection circuit is used for synchronously detecting the target waveform signal to obtain a detection signal; the filter circuit is used for carrying out filter transformation on the detection signal to obtain a filter signal; and the amplifying circuit is used for amplifying the filtered signal to obtain a target current signal.

By the technical means, the magnetic induction signal has weaker current, the obtained target waveform signal is subjected to filtering and amplifying treatment after being subjected to relevant treatment of the pulse generating circuit, the frequency adjusting circuit and the waveform conversion module, and then the amplified target current signal is input into the data analysis module, so that the magnetic particle content in the slurry to be detected can be accurately obtained.

In some embodiments, the detection assembly further comprises a display module, wherein: and the display module is used for displaying the content of the magnetic particles in the slurry to be detected on the display interface.

Through the technical means, the content of the magnetic particles in the slurry to be detected can be displayed through the display module, so that a user can intuitively know the quality of the slurry to be detected.

In some embodiments, the magnetic assembly comprises a solenoid, wherein: and the electromagnetic coil is used for generating a magnetic induction signal according to the magnetic flux change of the electromagnetic coil when the magnetic particles in the slurry to be detected perform cutting electromagnetic coil movement.

By the technical means, the magnetic induction coil is built around the pipeline of the slurry to be detected, and the magnetic induction coil is cut when magnetic particles in the slurry to be detected pass through the magnetic induction coil, and the phenomenon that magnetic flux changes to generate induced electromotive force is caused. Thus, when the magnetic particles in the closed loop move in the magnetic field to cut the magnetic induction lines, a weak current magnetic induction signal is generated so as to determine the content of the magnetic particles in the slurry to be detected later.

In a second aspect, an embodiment of the present application provides a method for detecting a content of magnetic particles, which is applied to a system for detecting a content of magnetic particles, where the method for detecting a content of magnetic particles includes:

The magnetic assembly is arranged around a pipeline of the slurry to be detected, and magnetic induction signals are generated when magnetic particles in the slurry to be detected pass through the magnetic assembly;

Generating a first pulse signal according to the magnetic induction signal, and performing waveform conversion and processing on the first pulse signal to generate a target current signal;

Determining a target current segment to which a target current signal belongs, and determining the content of magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the content of the magnetic particles; wherein the working frequency of the first pulse signal meets the working frequency of a magnetic particle content detection system.

By the technical means, the detection process of the content of the magnetic particles in the slurry can be simplified, the detection complexity is reduced, and the foreign matters of the magnetic particles in the slurry can be detected in time; in addition, after the target current signal is determined, the content of the magnetic particles in the slurry is determined according to the target current signal, so that the detection precision of the content of the magnetic particles in the slurry can be improved, the problem that the weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related art is solved, and meanwhile, the detection efficiency can be improved.

In some embodiments, the method for detecting the content of magnetic particles further comprises: the magnetic shielding system is arranged around the pipeline of the slurry to be detected, and the magnetic component is positioned inside the magnetic shielding system.

In some embodiments, generating the first pulse signal from the magnetic induction signal comprises: generating a second pulse signal according to the magnetic induction signal and the pulse generating circuit; and carrying out frequency adjustment on the second pulse signal through a frequency adjustment circuit to obtain a first pulse signal, wherein the working frequency of the first pulse signal meets the working frequency of a magnetic particle content detection system.

In some embodiments, performing waveform conversion and processing on the first pulse signal to generate a target current signal includes: performing waveform conversion on the first pulse signal through a waveform conversion module to obtain a target waveform signal; and filtering and amplifying the target waveform signal through a signal processing module to obtain a target current signal.

Through the technical means, the obtained first pulse signal is subjected to waveform conversion, filtering and amplification treatment, and then the amplified target current signal is input into the data analysis module so as to accurately analyze the content of the magnetic particles in the slurry to be detected, thereby improving the detection precision of the content of the magnetic particles in the slurry.

In some embodiments, filtering and amplifying the target waveform signal by the signal processing module to obtain a target current signal includes: synchronous detection is carried out on the target waveform signal through a detection circuit, so that a detection signal is obtained; filtering and transforming the detection signal through a filter circuit to obtain a filtered signal; and amplifying the filtered signal through an amplifying circuit to obtain a target current signal.

In some embodiments, the method for detecting the content of magnetic particles further comprises: and establishing a mapping relation between the current signals corresponding to at least one current segment and the magnetic particle content based on a preset magnetic particle content reference.

In some embodiments, the method for detecting the content of magnetic particles further comprises: and displaying the content of the magnetic particles in the slurry to be detected on a display interface.

In some embodiments, the magnetic assembly includes a solenoid to generate a magnetic induction signal as the magnetic particles in the slurry to be detected pass through the magnetic assembly, comprising: when the magnetic particles in the slurry to be detected pass through the electromagnetic coil to perform cutting electromagnetic coil movement, the magnetic flux of the electromagnetic coil is caused to change, and a magnetic induction signal is generated according to the magnetic flux change of the electromagnetic coil.

The system for detecting the content of the magnetic particles comprises a magnetic component and a detection component, wherein the magnetic component is arranged around a pipeline of slurry to be detected. The method comprises the steps of generating magnetic induction signals when magnetic particles in slurry to be detected pass through a magnetic assembly, generating first pulse signals according to the magnetic induction signals, performing waveform conversion and processing on the first pulse signals through a detection assembly to generate target current signals, determining target current segments to which the target current signals belong, and determining the content of the magnetic particles in the slurry to be detected according to the mapping relation between the current signals corresponding to the target current segments and the content of the magnetic particles. Therefore, according to the detection system, the detection process of the content of the magnetic particles in the slurry can be simplified, the detection complexity is reduced, and the foreign matters of the magnetic particles in the slurry can be detected in time; in addition, the application establishes the mapping relation between the current signal and the magnetic particle content by sections, determines the magnetic particle content in the slurry according to the target current signal, can also improve the detection precision of the magnetic particle content in the slurry, solves the problem that the weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related technology, and can improve the detection efficiency.

Drawings

Fig. 1 is a schematic diagram of a composition structure of a magnetic particle content detection system according to an embodiment of the present application;

Fig. 2 is a schematic diagram of a second composition structure of a magnetic particle content detection system according to an embodiment of the present application;

Fig. 3 is a schematic diagram of a composition structure of a magnetic particle content detection system according to an embodiment of the present application;

FIG. 4 is a diagram illustrating a mapping relationship between a current signal and a magnetic particle content according to an embodiment of the present application;

FIG. 5 is a second schematic diagram of a mapping relationship between a current signal and a magnetic particle content according to an embodiment of the present application;

FIG. 6 is a diagram illustrating a mapping relationship between a current signal and a magnetic particle content according to an embodiment of the present application;

FIG. 7 is a diagram showing a mapping relationship between a current signal and a magnetic particle content according to an embodiment of the present application;

FIG. 8 is a diagram showing a mapping relationship between a current signal and a magnetic particle content according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a pulse generating module according to an embodiment of the present application;

fig. 10 is a schematic diagram of a composition structure of a signal processing module according to an embodiment of the present application;

FIG. 11 is a schematic diagram showing a structure of a magnetic particle content detection system according to an embodiment of the present application;

FIG. 12 is a schematic diagram showing a detailed structure of a magnetic particle content detection system according to an embodiment of the present application;

FIG. 13 is a flow chart of a method for detecting magnetic particle content according to an embodiment of the present application;

Fig. 14 is a flow chart diagram of a method for detecting the content of magnetic particles according to an embodiment of the present application.

Detailed Description

For a more complete understanding of the nature and the technical content of the embodiments of the present application, reference should be made to the following detailed description of embodiments of the application, taken in conjunction with the accompanying drawings, which are meant to be illustrative only and not limiting of the embodiments of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the application only and is not intended to be limiting of the application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.

It should also be noted that the term "first\second\third" in relation to embodiments of the present application is used merely to distinguish similar objects and does not represent a particular ordering for the objects, it being understood that the "first\second\third" may be interchanged in a particular order or sequence, where allowed, to enable embodiments of the present application described herein to be practiced in an order other than that illustrated or described herein.

New energy batteries are increasingly used in life and industry, for example, new energy automobiles having a battery mounted therein have been widely used, and in addition, batteries are increasingly used in the field of energy storage and the like.

At present, new energy batteries are increasingly widely applied to life and industry. The new energy battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and a plurality of fields such as aerospace. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

In an embodiment of the present application, the battery may be a battery cell. The battery cell is a basic unit capable of realizing the mutual conversion of chemical energy and electric energy, and can be used for manufacturing a battery module or a battery pack so as to supply power to an electric device. The battery cell may be a secondary battery, which means a battery cell that can be continuously used by activating an active material in a charging manner after the battery cell is discharged. The battery cell may be a lithium 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 hydrogen battery, a nickel cadmium battery, a lead storage battery, or the like, which is not limited thereto.

In embodiments of the present application, the battery may also be a single physical module that includes one or more battery cells to provide higher voltage and capacity. When a plurality of battery cells are provided, the plurality of battery cells are connected in series, in parallel or in series-parallel through the converging component.

Further, with the wide application of secondary batteries, especially lithium ion batteries, in the fields of power batteries and energy storage, high energy density, high potential and high safety performance have become the main development trend in the future, and the safety performance is a key index of lithium ion batteries. The electrode material inevitably introduces some magnetic impurities in the production process, and the magnetic impurities are oxidized at the positive electrode and then reduced to form metal dendrites at the negative electrode in the battery charging and discharging process, so that the separator is pierced, and internal short circuit and the like of the battery are caused. Meanwhile, due to the existence of magnetic impurities, the specific capacity, the energy density and the like of the material are also reduced.

In the electrode material pulping process, most of equipment, logistics pipelines and the like which are in contact with materials are made of stainless steel, long-term contact friction between the inner surface of the equipment and the materials, running abrasion of the equipment, friction between the materials and a pipeline welding port or a corner in each process transferring process are likely to abrade and peel off magnetic impurities such as stainless steel scraps, so that the battery performance is greatly influenced, and potential safety hazards are caused. Thus, it is necessary to detect and monitor magnetic impurities in the slurry.

Although the related art has proposed some detection methods regarding the content of magnetic impurities in slurry, the operation of these detection methods is complicated, and there is also a problem that weak magnetic or micrometer-sized magnetic metal particles are difficult to detect.

Based on the above, the embodiment of the application provides a system and a method for detecting the content of magnetic particles, wherein magnetic components are arranged around a pipeline of slurry to be detected, and magnetic induction signals are generated when the magnetic particles in the slurry to be detected pass through the magnetic components; generating a first pulse signal according to the magnetic induction signal, performing waveform conversion and processing on the first pulse signal through a detection component to generate a target current signal, determining a target current segment to which the target current signal belongs according to the target current signal, and determining the content of magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the content of the magnetic particles. Therefore, according to the detection system, the detection process of the content of the magnetic particles in the slurry can be simplified, the detection complexity is reduced, and the foreign matters of the magnetic particles in the slurry can be detected in time; in addition, the application establishes the mapping relation between the current signal and the magnetic particle content by sections, determines the magnetic particle content in the slurry according to the target current signal, can also improve the detection precision of the magnetic particle content in the slurry, solves the problem that the weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related technology, and can improve the detection efficiency.

Various embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In an embodiment of the present application, fig. 1 is a schematic diagram illustrating a composition structure of a magnetic particle content detection system according to an embodiment of the present application. As shown in fig. 1, the detection system 10 for magnetic particle content may include a magnetic assembly 11 and a detection assembly 12, the magnetic assembly 11 being disposed around a pipe 13 of a slurry to be detected; wherein:

a magnetic component 11 for generating a magnetic induction signal when magnetic particles in the slurry to be detected pass through the magnetic component 11;

The detection component 12 is configured to generate a first pulse signal according to the magnetic induction signal, perform waveform conversion and processing on the first pulse signal, generate a target current signal, determine a target current segment to which the target current signal belongs, and determine the magnetic particle content in the slurry to be detected according to a mapping relationship between the current signal corresponding to the target current segment and the magnetic particle content.

In the embodiment of the application, for the lithium ion battery, the charge and discharge process is realized mainly by virtue of the movement of lithium ions between the positive electrode and the negative electrode. During charging, lithium ions are deintercalated from the positive electrode and are intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true when discharging. However, the lithium ion battery needs to realize movement of lithium ions by taking slurry as a medium. If magnetic impurities (or "magnetic particles") are present in the slurry, the normal operation of the lithium ion battery is affected, and therefore, the detection and monitoring of the magnetic particles in the slurry is required.

In the embodiment of the present application, a system for detecting the content of magnetic particles is provided herein, which can detect the content of magnetic particles in the slurry to be detected in the pipeline 13. Specifically, a magnetic component 11 is disposed around the pipe 13, and a magnetic induction signal is generated when magnetic particles (such as black dots in fig. 1) in the slurry to be detected pass through the magnetic component 11; then, based on the detection component 12, a first pulse signal is generated by utilizing the magnetic induction signal, the first pulse signal is subjected to waveform conversion and processing to generate a target current signal, and the content of magnetic particles in the slurry to be detected is determined according to the target current signal, so that the problem that weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related art can be solved, and meanwhile, the detection efficiency can be improved.

In an embodiment of the present application, the operating frequency of the first pulse signal satisfies the operating frequency of the detection system 10 for the magnetic particle content. In addition, the content of the magnetic particles in the slurry to be detected is determined according to the target current signal, which can be specifically: firstly, determining a target current segment to which a target current signal belongs, and then determining the magnetic particle content corresponding to the target current signal as the magnetic particle content in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the magnetic particle content, so that the detection precision of the magnetic particle content in the slurry can be improved.

In some embodiments, based on the magnetic particle content detection system 10 shown in fig. 1, referring to fig. 2, the magnetic particle content detection system 10 may further include a magnetic shielding system 14, wherein:

the magnetic shielding system 14 is arranged around the pipe 13 of the slurry to be detected, and the magnetic assembly 11 is located inside the magnetic shielding system 14.

In an embodiment of the application, the conduit 13 may also be referred to as a "slurry conduit" in which the slurry to be tested is contained. The purpose of the magnetic shielding system is to reduce the influence of the external environment on the detection of the magnetic particles in the slurry to be detected and avoid the influence of electromagnetic signals in the external environment on the detection accuracy of the content of the magnetic particles.

In the embodiment of the application, the magnetic component 11 is located inside the magnetic shielding system 14, so that magnetic induction signals are generated when magnetic particles in the slurry to be detected pass through the magnetic component 11 to perform the motion of cutting magnetic induction lines, and the magnetic induction signals are not influenced by external environment.

In some embodiments, based on the detection system 10 shown in fig. 2, referring to fig. 3, the detection assembly 12 may include a pulse generation module 121, a waveform conversion module 122, a signal processing module 123, and a data analysis module 124, wherein:

a pulse generating module 121 for generating a first pulse signal according to the magnetic induction signal;

the waveform conversion module 122 is configured to perform waveform conversion on the first pulse signal to obtain a target waveform signal;

the signal processing module 123 is configured to perform filtering and amplifying processing on the target waveform signal to obtain a target current signal;

The data analysis module 124 is configured to determine a target current segment to which the target current signal belongs, and determine the content of magnetic particles in the slurry to be detected according to a mapping relationship between the current signal corresponding to the target current segment and the content of the magnetic particles.

In the embodiment of the present application, as shown in fig. 3, the pulse generating module 121 is connected to the magnetic component 11, and is configured to receive a magnetic induction signal and generate a first pulse signal according to the magnetic induction signal; the pulse generation module 121 is connected to the waveform conversion module 122, and is configured to provide the first pulse signal to the waveform conversion module 122, and convert the first pulse signal into a target waveform signal required by the detection system, such as a sine waveform signal, a cosine waveform signal, and the like, through the waveform conversion module 122; the waveform conversion module 122 is then connected to the signal processing module 123, and the signal processing module 123 filters and amplifies the target waveform signal to obtain a target current signal, and finally the target current signal is input to the data analysis module 124 to determine the magnetic particle content in the slurry to be detected.

In this way, in the data analysis module 124, according to the target current segment to which the target current signal belongs and the mapping relationship between the current signal corresponding to the target current segment and the magnetic particle content, the magnetic particle content corresponding to the target current signal can be determined as the magnetic particle content in the slurry to be detected, so that the detection accuracy of the magnetic particle content in the slurry can be improved.

In some embodiments, the data analysis module 124 is further configured to establish a mapping relationship between the current signal and the magnetic particle content corresponding to each of the at least one current segment based on a preset magnetic particle content reference.

In the embodiment of the application, different current segments can correspond to different mapping relations between current signals and magnetic particle contents. Specifically, based on preset magnetic particle content references (for example, ppm content references, ppb content references, etc.), for the magnetic particle content under different references, a mapping relationship between the current signal and the magnetic particle content may be established in segments based on a large number of test data analyses, that is, a mapping relationship between the current signal and the magnetic particle content, which corresponds to at least one current segment, is established.

In addition, it should be noted that ppb and ppm are concentration units. ppb is an abbreviation for part per bililion, in solution is the concentration expressed in parts per billion by the mass of solute in the total mass of solution, also known as parts per billion concentration. ppm is an abbreviation for part per million, and in solution is the concentration expressed in parts per million by mass of solute relative to the total mass of the solution, also referred to as the parts per million concentration. Wherein 1 ppm=1000 ppb.

In the embodiment of the present application, the mapping relationship (i.e. the "fitting relationship") may be a fitting linear relationship, or may be a fitting nonlinear relationship, for example, an exponential function relationship, a power function relationship, etc., which is not limited in any way.

Taking a fitting linear relationship as an example, fig. 4 is a schematic diagram of a mapping relationship between a current signal and a magnetic particle content provided by an embodiment of the present application, fig. 5 is a schematic diagram of a mapping relationship between a current signal and a magnetic particle content provided by an embodiment of the present application, fig. 6 is a schematic diagram of a mapping relationship between a current signal and a magnetic particle content provided by an embodiment of the present application, fig. 7 is a schematic diagram of a mapping relationship between a current signal and a magnetic particle content provided by an embodiment of the present application, and fig. 8 is a schematic diagram of a mapping relationship between a current signal and a magnetic particle content provided by an embodiment of the present application.

In the embodiment of the application, the magnetic particle content ranges corresponding to different current segments are also different. As shown in fig. 4 to 8, the content range of the magnetic particles corresponding to fig. 4 is 1 to 100ppb, the mapping relationship is y= 0.9061x-0.313, and the fitting degree is R ² = 0.9953; the magnetic particle content range corresponding to fig. 5 is 100ppb to 500ppb, the mapping relation is y=1.7238x+11.442, and the fitting degree is R ² = 0.9916; the magnetic particle content range corresponding to fig. 6 is 0.5-20 ppm, the mapping relationship is y=15.379x+0.4871, and the fitting degree is R ² = 0.9921; the content range of the magnetic particles corresponding to fig. 7 is 20-100 ppm, the mapping relation is y= 18.596x-0.1911, and the fitting degree is R ² = 0.9849; the magnetic particle content range corresponding to fig. 8 is 100-500 ppm, the mapping relationship is y=3.9747x+97.617, and the fitting degree R ² = 0.9824; wherein x is a horizontal axis and is used for representing the value of a current signal; y is the vertical axis and is used to represent the value of the magnetic particle content.

In this way, the mapping relation between the current signal and the magnetic particle content is established in a segmented way, and then the magnetic particle content in the slurry is determined according to the target current signal, so that the detection precision of the magnetic particle content in the slurry can be improved, for example, the precision of the magnetic particle content can reach ppb level, and the problem that the weak magnetism or micron-level magnetic metal particles are difficult to detect in the related art is solved.

In some embodiments, for the pulse generation module 121, referring to fig. 9, the pulse generation module 121 may include a pulse generation circuit 1211 and a frequency adjustment circuit 1212, wherein:

A pulse generating circuit 1211 for generating a second pulse signal according to the magnetic induction signal;

The frequency adjustment circuit 1212 is configured to perform frequency adjustment on the second pulse signal to obtain a first pulse signal, where an operating frequency of the first pulse signal meets an operating frequency of the magnetic particle content detection system.

In an embodiment of the present application, the pulse generating circuit 1211 may be a pulse generator for generating an oscillating pulse signal, which may also be referred to as a square wave signal, i.e., the second pulse signal described herein.

If the operating frequency of the second pulse signal does not meet the operating frequency required by the detection system, then frequency adjustment is required via frequency adjustment circuit 1212. The frequency adjustment circuit 1212 may include a frequency divider circuit and/or a frequency multiplier circuit, among others.

In one possible implementation, if the operating frequency of the second pulse signal is higher than the operating frequency required by the detection system, then a low frequency first pulse signal needs to be generated by a frequency divider circuit (or "divider") so that the operating frequency of the first pulse signal meets the operating frequency of the detection system.

In one possible implementation, if the operating frequency of the second pulse signal is lower than the operating frequency required by the detection system, then a high frequency first pulse signal needs to be generated by a frequency multiplier circuit (or "frequency multiplier") such that the operating frequency of the first pulse signal meets the operating frequency of the detection system.

In some embodiments, for the signal processing module 123, referring to fig. 10, the signal processing module 123 may include a detection circuit 1231, a filter circuit 1232, and an amplification circuit 1233, wherein:

the detection circuit 1231 is configured to perform synchronous detection on the target waveform signal to obtain a detection signal;

the filtering circuit 1232 is configured to perform filtering transformation on the detected signal to obtain a filtered signal;

and an amplifying circuit 1233 for amplifying the filtered signal to obtain a target current signal.

In an embodiment of the present application, the detection circuit 1231 may be a synchronous detector, which is used to maintain the consistency of the signal phase. The synchronous detector consists of a multiplier and a low-pass filter, and specifically realizes the signal demodulation process by multiplying a local oscillation signal with the same frequency and phase as a carrier wave with a modulated signal.

In the embodiment of the present application, the filtering circuit 1232 may be a filter, and is configured to perform filtering transformation on the signal output after detection to obtain a direct current signal (i.e. a filtered signal). In addition, the amplifying circuit 1233 may be a differential amplifier for differentially amplifying the filtered signal to obtain the target current signal.

Thus, since the current of the magnetic induction signal is weak, the obtained target waveform signal is subjected to filtering and amplifying processing after being subjected to the correlation processing of the pulse generating circuit 1211, the frequency adjusting circuit 1212 and the waveform converting module 122, and then the amplified target current signal is inputted to the data analyzing module 124, so that the magnetic particle content in the slurry to be detected can be accurately obtained.

In some embodiments, for magnetic assembly 11, magnetic assembly 11 may include an electromagnetic coil. And the electromagnetic coil is used for generating a magnetic induction signal according to the magnetic flux change of the electromagnetic coil when the magnetic particles in the slurry to be detected perform cutting electromagnetic coil movement.

In embodiments of the present application, the electromagnetic coil may also be referred to as a magnetic induction coil. Magnetic induction coils are established around the pipe 13 of the slurry to be detected, and the magnetic induction coils are cut when magnetic particles in the slurry to be detected pass through the magnetic induction coils, and the phenomenon that magnetic flux changes to generate induced electromotive force is caused. That is, when the magnetic particles move in the magnetic field to cut the magnetic induction lines in the closed loop, a weak current magnetic induction signal is generated so as to determine the content of the magnetic particles in the slurry to be detected later.

In some embodiments, referring to fig. 11, based on the detection system 10 shown in fig. 3, the detection assembly 12 may further include a display module 125, wherein:

The display module 125 is configured to display the content of the magnetic particles in the slurry to be detected on a display interface.

In an embodiment of the present application, the display module 125 may be a display, such as a liquid crystal display, a plasma display, a display using a Cathode Ray Tube (CRT), or the like. Therefore, after the content of the magnetic particles in the slurry to be detected is obtained, the content of the magnetic particles in the slurry to be detected can be displayed through the display module, so that a user can intuitively know the quality of the slurry to be detected.

In some embodiments, after determining the content of the magnetic particles in the slurry to be detected, the magnetic particles in the slurry can be removed rapidly through a magnetic removing device, so that the quality of the slurry to be detected is improved, the self-discharge of the battery can be improved, and the K value rate of merit is improved.

The embodiment of the application provides a detection system for the content of magnetic particles, wherein magnetic components are arranged around a pipeline of slurry to be detected, and magnetic induction signals are generated when the magnetic particles in the slurry to be detected pass through the magnetic components; generating a first pulse signal according to the magnetic induction signal, performing waveform conversion and processing on the first pulse signal through a detection assembly to generate a target current signal, and determining the content of magnetic particles in the slurry to be detected according to the target current signal. Therefore, the detection process of the content of the magnetic particles in the slurry can be simplified, the detection complexity is reduced, and the foreign matters of the magnetic particles in the slurry can be detected in time; in addition, because the mapping relation between the current signal and the magnetic particle content is established in a segmented way, the magnetic particle content in the slurry is determined according to the target current signal, the detection precision of the magnetic particle content in the slurry can be improved, the problem that the weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related technology is solved, and meanwhile, the detection efficiency can be improved.

In another embodiment of the present application, based on the detection system described in the previous embodiment, fig. 12 is a schematic diagram of a detailed structure of a magnetic particle content detection system according to an embodiment of the present application. As shown in fig. 12, the magnetic particle content detection system 10 may include a magnetic shielding system 14, a magnetic induction coil 101, and a pulse generator system 102. Among other things, pulse generator system 102 may include a pulse generator 1021, a frequency divider 1022, a waveform converter 1023, a synchronous detector 1024, a filter 1025, a differential amplifier 1026, a data analysis processing system 1027, and a display 1028.

In an embodiment of the present application, a system for online detection of magnetic particles in slurry (simply referred to as "online detection system") is provided herein, wherein the magnetic induction coil 101 corresponds to the magnetic assembly in the previous embodiment, and the pulse generator system 102 corresponds to the detection assembly in the previous embodiment. Specifically, after the magnetic induction coil 101 is energized by the voltmeter 103, if a magnetic particle cuts the magnetic induction coil 101, a magnetic induction signal is generated to act on the pulse generator 1021, and the pulse generator 1021 generates a high-frequency oscillation pulse signal, and then the high-frequency oscillation pulse signal is converted into the working frequency of the sensor by the frequency divider 1022. The waveform converter 1023 converts the pulse signal into a working waveform required by the sensor through an internal circuit, and the working waveform is subjected to amplitude control by a follower and then acts on the sensor. Thus, when the magnetic particles in the slurry pass through the magnetic induction coil 101, the magnetic particle components in the slurry are magnetized to generate a magnetic field, and the magnetic field is superimposed on the sensor, so that the equilibrium state of the sensor is broken, and a signal proportional to the magnetism of the magnetic particles is output. The target waveform signal from the waveform converter 1023 is fed to a synchronous detector 1024 which functions to maintain the consistency of the signal phase. The detected signal is converted into a direct current signal by a filter 1025, and the direct current signal is differentially amplified by a differential amplifier 1026 and then sent to a data analysis processing system 1027 (i.e. "data analysis module" in the previous embodiment), and finally the magnetic particle content in the slurry is displayed by a display 1028.

In a specific embodiment, the in-line detection system is comprised of a magnetic shielding system 14, magnetic induction coils 101, and a pulse generator system 102. The specific functional steps are as follows:

A. A set of magnetic shielding system 14 is established around the slurry pipeline, and the purpose of establishing the magnetic shielding system 14 is to reduce the influence of the external environment on the detection of magnetic foreign matters by the slurry.

B. the magnetic induction coil 101 is built around the slurry pipeline, and the magnetic induction coil 101 is built to cut the coil when magnetic particles in the slurry pass through the magnetic induction coil 101, so that the phenomenon that induced electromotive force is generated due to magnetic flux change is caused, and when the magnetic particles in a closed loop perform movement of cutting magnetic induction lines in a magnetic field, a weak current magnetic induction signal is generated;

C. the waveform converter 1023 converts the pulse signal into a working waveform required by the sensor through an internal circuit, and the working waveform is subjected to amplitude control by a follower and then acts on the sensor. When the slurry passes through the magnetic induction coil 101, the magnetic particle components in the slurry are magnetized to generate a magnetic field, and the magnetic field is superposed on the sensor, so that the balance state of the sensor is broken, a signal proportional to the magnetism of the magnetic particles is output, and the signal is amplified by the differential amplifier and then sent to the synchronous detector, wherein the synchronous detector has the function of keeping the consistency of the signal phases. In addition, the target waveform signal output by the waveform converter 1023 is sent to the synchronous detector 1024, the detected signal is converted into a direct current signal by the filter 1025, and the direct current signal is sent to the data analysis processing system 1027 after being differentially amplified by the differential amplifier 1026, and finally the magnetic particle content in the slurry is displayed by the display 1028.

The embodiment of the application provides a magnetic particle content detection system, the specific implementation of the embodiment is elaborated through the embodiment, and the magnetic shielding system is established and a standard background magnetic field signal is set through the technical scheme of the embodiment; and respectively suggesting datum lines of ppm content and ppb content of different magnetic particles in the slurry, and based on the content of the magnetic particles of different levels, establishing fitting relation between the content of the magnetic particles and current signals in a segmented way, so that the quality precision of the magnetic particles is as high as 1ppm content of the magnetic particles; the problem that weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related technology is solved, and magnetic metal foreign matters can be detected on line and timely; in addition, after the content of the magnetic particles is detected, the magnetic particles in the slurry can be better demagnetized, so that the self-discharge of the battery cell can be improved, and the K value optimal rate is improved.

In still another embodiment of the present application, fig. 13 is a schematic flow chart of a method for detecting the content of magnetic particles according to an embodiment of the present application. As shown in fig. 13, the method for detecting the content of the magnetic particles may include:

S1301, arranging a magnetic component around a pipeline of the slurry to be detected, and generating a magnetic induction signal when magnetic particles in the slurry to be detected pass through the magnetic component.

It should be noted that, in the embodiment of the present application, the method may be applied to the detection system for the magnetic particle content described in any of the foregoing embodiments. The detection system for the content of the magnetic particles at least comprises a magnetic component and a detection component, wherein the magnetic component is arranged around a pipeline of the slurry to be detected, and magnetic induction signals are generated when the magnetic particles in the slurry to be detected pass through the magnetic component.

In some embodiments, the magnetic assembly includes a solenoid. Accordingly, generating a magnetic induction signal as the magnetic particles in the slurry to be detected pass through the magnetic assembly may include: when the magnetic particles in the slurry to be detected pass through the electromagnetic coil to perform cutting coil movement, the magnetic flux of the electromagnetic coil is caused to change, and a magnetic induction signal is generated according to the magnetic flux change of the electromagnetic coil.

That is, in embodiments of the present application, the electromagnetic coil may also be referred to as a magnetic induction coil. A magnetic induction coil is established around a pipeline of the slurry to be detected, and the magnetic induction coil has the effect that magnetic particles in the slurry to be detected can cut the coil when passing through the magnetic induction coil, and the phenomenon that magnetic flux changes to generate induced electromotive force can be caused. That is, when the magnetic particles move in the magnetic field to cut the magnetic induction lines in the closed loop, a weak current magnetic induction signal is generated so as to determine the content of the magnetic particles in the slurry to be detected later.

In some embodiments, the method for detecting the content of the magnetic particles may further include: the magnetic shielding system is arranged around the pipeline of the slurry to be detected, and the magnetic component is positioned inside the magnetic shielding system.

In embodiments of the present application, the conduit herein may also be referred to as a "slurry conduit" in which the slurry to be tested is contained. The purpose of establishing the magnetic shielding system is to reduce the detection influence of the external environment on the magnetic particles in the slurry to be detected and avoid the influence of the external environment on the detection accuracy of the magnetic particle content.

S1302, generating a first pulse signal according to the magnetic induction signal, and performing waveform conversion and processing on the first pulse signal to generate a target current signal.

It should be further noted that, in the embodiment of the present application, the pulse generating module includes a pulse generating circuit and a frequency adjusting circuit. Accordingly, generating the first pulse signal from the magnetic induction signal may include: generating a second pulse signal according to the magnetic induction signal and the pulse generating circuit; and carrying out frequency adjustment on the second pulse signal through a frequency adjustment circuit to obtain a first pulse signal, wherein the working frequency of the first pulse signal meets the working frequency of the detection system.

In the embodiment of the application, if the working frequency of the second pulse signal does not meet the working frequency required by the detection system, the frequency adjustment circuit is required to perform frequency adjustment. The frequency adjustment circuit may include a frequency divider circuit and/or a frequency multiplier circuit.

In some embodiments, performing waveform conversion and processing on the first pulse signal to generate a target current signal may include: performing waveform conversion on the first pulse signal through a waveform conversion module to obtain a target waveform signal; and filtering and amplifying the target waveform signal through a signal processing module to obtain a target current signal.

In an embodiment of the present application, the signal processing module may include a detection circuit, a filter circuit, and an amplifying circuit. Correspondingly, the filtering and amplifying process is performed on the target waveform signal through the signal processing module to obtain a target current signal, which may include: synchronous detection is carried out on the target waveform signal through a detection circuit, so that a detection signal is obtained; filtering and transforming the detection signal through a filter circuit to obtain a filtered signal; and amplifying the filtered signal through an amplifying circuit to obtain a target current signal.

That is, since the current of the magnetic induction signal is weak, the obtained target waveform signal is subjected to filtering and amplifying processing after being subjected to the correlation processing of the pulse generating circuit and the frequency adjusting circuit, the frequency adjusting circuit and the waveform converting module, and then the amplified target current signal is input to the data analyzing module, thereby being capable of accurately obtaining the magnetic particle content in the slurry to be detected.

S1303, determining a target current segment to which the target current signal belongs, and determining the content of the magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the content of the magnetic particles.

It should be noted that in the embodiment of the present application, the content of the magnetic particles in the slurry to be detected is determined according to the target current signal, specifically, the target current segment to which the target current signal belongs needs to be determined first, and then the content of the magnetic particles in the slurry to be detected can be determined according to the mapping relationship between the current signal corresponding to the target current segment and the content of the magnetic particles.

That is, after the target current signal is input to the data analysis module, according to the target current segment to which the target current signal belongs and the mapping relationship between the current signal corresponding to the target current segment and the magnetic particle content, the magnetic particle content corresponding to the target current signal can be determined as the magnetic particle content in the slurry to be detected, so that the detection accuracy of the magnetic particle content in the slurry can be improved.

In some embodiments, the method for detecting the content of the magnetic particles may further include: and establishing a mapping relation between the current signals corresponding to at least one current segment and the magnetic particle content based on a preset magnetic particle content reference.

For example, taking a fitting linear relationship as an example, the fitting linear relationship between the current signal and the magnetic particle content under five current segments as shown in fig. 4-8, the magnetic particle content ranges corresponding to different current segments are also different. Specifically, the content range of the magnetic particles corresponding to fig. 4 is 1-100 ppb, the content range of the magnetic particles corresponding to fig. 5 is 100-500 ppb, the content range of the magnetic particles corresponding to fig. 6 is 0.5-20 ppm, the content range of the magnetic particles corresponding to fig. 7 is 20-100 ppm, and the content range of the magnetic particles corresponding to fig. 8 is 100-500 ppm.

In some embodiments, referring to fig. 14, after step S1303, the method for detecting a magnetic particle content further includes:

s1401, displaying the magnetic particle content in the slurry to be detected on a display interface.

In the embodiment of the present application, the display interface may be a screen interface of a display, for example, a screen interface of a liquid crystal display, a plasma display, a CRT display, or the like. Therefore, after the content of the magnetic particles in the slurry to be detected is obtained, the content of the magnetic particles in the slurry to be detected can be displayed through the display module, so that a user can intuitively know the quality of the slurry to be detected.

In a specific embodiment, the method for detecting the content of the magnetic particles is specifically as follows:

(1) When the slurry passes through the magnetic induction coil, the magnetic particle components in the slurry are magnetized to generate a magnetic field, the cutting magnetic induction coil is superposed on the sensor, and when the magnetic particles pass through the magnetic induction coil, the coil is cut, so that the phenomenon that induced electromotive force is generated due to magnetic flux change can be caused, and when the magnetic particles in a closed loop perform the movement of cutting magnetic induction wire in the magnetic field, a weak current magnetic induction signal can be generated;

(2) The current signal is processed to output a signal proportional to the magnetism of the magnetic particles, and the differential amplifier amplifies the signal and sends the amplified signal to the synchronous detector, wherein the synchronous detector is used for keeping the consistency of the signal phases.

(3) The target waveform signal output by the waveform converter is sent to the synchronous detector, the signal output after detection is filtered and converted into a direct current signal, then the current signal is amplified and sent to the data analysis processing system, and the magnetic particle content in the slurry is displayed through the display module based on the mapping relation between the calibrated different magnetic particle content and the current signal.

It can be understood that in the embodiment of the application, after the content of the magnetic particles in the slurry to be detected is determined, the magnetic particles in the slurry can be rapidly removed by the magnetic removing device, so that the quality of the slurry to be detected is improved, the self-discharge of the battery can be improved, and the K value high rate is improved.

The embodiment of the application provides a method for detecting the content of magnetic particles, in particular to a device for detecting the magnetic particles of slurry on line and a content testing method thereof, wherein a magnetic assembly is arranged around a pipeline of the slurry to be detected, and magnetic induction signals are generated when the magnetic particles in the slurry to be detected pass through the magnetic assembly; generating a first pulse signal according to the magnetic induction signal, and performing waveform conversion and processing on the first pulse signal to generate a target current signal; and determining the content of the magnetic particles in the slurry to be detected according to the target current signal. Therefore, the detection process of the content of the magnetic particles in the slurry can be simplified, the detection complexity is reduced, and the foreign matters of the magnetic particles in the slurry can be detected in time; in addition, because the mapping relation between the current signal and the magnetic particle content is established in a segmented way, the magnetic particle content in the slurry is determined according to the target current signal, the detection precision of the magnetic particle content in the slurry can be improved, and the magnetic particle quality precision is as high as 1ppm of the magnetic particle content; therefore, the problem that weak magnetism or micron-sized magnetic metal particles are difficult to detect in the related technology is solved, and meanwhile, the detection efficiency can be improved.

In a further embodiment of the present application, an embodiment of the present application provides a computer readable storage medium having stored thereon a computer program which, when executed, implements the method of detecting the magnetic particle content of any of the previous embodiments.

In a further embodiment of the application, an embodiment of the application also provides a computer program product comprising a computer program or instructions which, when executed, implements a method for detecting the content of magnetic particles according to any of the previous embodiments.

It will be appreciated by those skilled in the art that the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

It should also be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence number of each step/process described above does not mean that the execution sequence of each step/process should be determined by its functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure. The foregoing embodiment numbers of the present disclosure are merely for description and do not represent advantages or disadvantages of the embodiments.

It should be noted that, in the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of 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, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.

The above description is not intended to limit the scope of the application, but is intended to cover any modifications, equivalents, and improvements within the spirit and principles of the application.

Claims

1. The detection system for the content of the magnetic particles is characterized by comprising a magnetic component and a detection component, wherein the magnetic component is arranged around a pipeline of the slurry to be detected; wherein:

The magnetic component is used for generating a magnetic induction signal when the magnetic particles in the slurry to be detected pass through the magnetic component;

The detection component is used for generating a first pulse signal according to the magnetic induction signal, performing waveform conversion and processing on the first pulse signal to generate a target current signal, determining a target current segment to which the target current signal belongs, and determining the content of magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the content of the magnetic particles; wherein the working frequency of the first pulse signal meets the working frequency of the magnetic particle content detection system.

2. The system for detecting the content of magnetic particles according to claim 1, further comprising a magnetic shielding system, wherein:

The magnetic shielding system is arranged around the pipeline of the slurry to be detected, and the magnetic component is positioned inside the magnetic shielding system.

3. The system for detecting the content of magnetic particles according to claim 1, wherein the detection assembly comprises a pulse generation module, a waveform conversion module, a signal processing module, and a data analysis module, wherein:

The pulse generation module is used for generating the first pulse signal according to the magnetic induction signal;

the waveform conversion module is used for performing waveform conversion on the first pulse signal to obtain a target waveform signal;

the signal processing module is used for filtering and amplifying the target waveform signal to obtain the target current signal;

The data analysis module is used for determining a target current segment to which the target current signal belongs, and determining the content of the magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the content of the magnetic particles.

4. The magnetic particle content detection system of claim 3, wherein the data analysis module is further configured to establish a mapping relationship between the current signal and the magnetic particle content corresponding to each of the at least one current segment based on a preset magnetic particle content reference.

5. A system for detecting the content of magnetic particles according to claim 3, wherein the pulse generation module comprises a pulse generation circuit and a frequency adjustment circuit, wherein:

the pulse generation circuit is used for generating a second pulse signal according to the magnetic induction signal;

the frequency adjusting circuit is used for adjusting the frequency of the second pulse signal to obtain the first pulse signal, and the working frequency of the first pulse signal meets the working frequency of the magnetic particle content detection system.

6. A system for detecting the content of magnetic particles according to claim 3, wherein the signal processing module comprises a detection circuit, a filter circuit and an amplifying circuit, wherein:

the detection circuit is used for synchronously detecting the target waveform signal to obtain a detection signal;

the filter circuit is used for carrying out filter transformation on the detection signal to obtain a filter signal;

and the amplifying circuit is used for amplifying the filtering signal to obtain the target current signal.

7. A magnetic particle content detection system as claimed in claim 3 wherein the detection assembly further comprises a display module, wherein:

and the display module is used for displaying the content of the magnetic particles in the slurry to be detected on a display interface.

8. The system for detecting the content of magnetic particles according to any one of claims 1 to 6, wherein the magnetic assembly comprises an electromagnetic coil, wherein:

and the electromagnetic coil is used for generating the magnetic induction signal according to the magnetic flux change of the electromagnetic coil when the magnetic particles in the slurry to be detected cut the electromagnetic coil to move.

9. A method for detecting the content of magnetic particles, which is characterized by being applied to a system for detecting the content of the magnetic particles, and comprising the following steps:

The method comprises the steps that a magnetic component is arranged around a pipeline of slurry to be detected, and magnetic induction signals are generated when magnetic particles in the slurry to be detected pass through the magnetic component;

Determining a target current segment to which the target current signal belongs, and determining the content of magnetic particles in the slurry to be detected according to the mapping relation between the current signal corresponding to the target current segment and the content of the magnetic particles; wherein the working frequency of the first pulse signal meets the working frequency of the magnetic particle content detection system.

10. The method for detecting the content of magnetic particles according to claim 9, further comprising:

and arranging a magnetic shielding system around the pipeline of the slurry to be detected, wherein the magnetic component is positioned inside the magnetic shielding system.

11. The method of detecting the content of magnetic particles according to claim 9, wherein generating a first pulse signal from the magnetic induction signal comprises:

generating a second pulse signal according to the magnetic induction signal and the pulse generating circuit;

and carrying out frequency adjustment on the second pulse signal through a frequency adjustment circuit to obtain the first pulse signal, wherein the working frequency of the first pulse signal meets the working frequency of the magnetic particle content detection system.

12. The method for detecting the content of magnetic particles according to claim 9, wherein the performing waveform conversion and processing on the first pulse signal to generate a target current signal includes:

Performing waveform conversion on the first pulse signal through a waveform conversion module to obtain a target waveform signal;

And filtering and amplifying the target waveform signal through a signal processing module to obtain the target current signal.

13. The method for detecting the content of magnetic particles according to claim 12, wherein the filtering and amplifying the target waveform signal by the signal processing module to obtain the target current signal comprises:

Synchronously detecting the target waveform signal through a detection circuit to obtain a detection signal;

The detection signal is subjected to filtering transformation through a filtering circuit to obtain a filtering signal;

and amplifying the filtered signal through an amplifying circuit to obtain the target current signal.

14. The method for detecting the content of magnetic particles according to claim 9, further comprising:

And establishing a mapping relation between the current signals corresponding to at least one current segment and the magnetic particle content based on a preset magnetic particle content reference.

15. The method for detecting the content of magnetic particles according to any one of claims 9 to 14, characterized in that the method for detecting the content of magnetic particles further comprises:

And displaying the content of the magnetic particles in the slurry to be detected on a display interface.

16. The method of any one of claims 9 to 14, wherein the magnetic assembly comprises a solenoid, the magnetic induction signal being generated when the magnetic particles in the slurry to be detected pass through the magnetic assembly, comprising:

When the magnetic particles in the slurry to be detected pass through the electromagnetic coil to perform cutting motion of the electromagnetic coil, the magnetic flux of the electromagnetic coil is caused to change, and the magnetic induction signal is generated according to the magnetic flux change of the electromagnetic coil.