CN118670926A - Method and device for detecting viscosity of electrolyte, storage medium and electronic equipment - Google Patents

Abstract

The present application is applicable to the field of battery technology, and provides a method, device, storage medium and electronic device for detecting the viscosity of an electrolyte. The electrolyte viscosity detection method provided by the present application obtains a first slip parameter obtained by titrating a first electrolyte, wherein the first viscosity value of the first electrolyte is known; performs data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve; obtains a second slip parameter obtained by titrating a second electrolyte, wherein the second electrolyte has the same titration operation conditions and electrolyte type as the first electrolyte; and determines the second viscosity value of the second electrolyte based on the second slip parameter and the electrolyte fitting curve. The technical problem that the electrolyte viscosity test method in the related art has high detection cost and is not convenient for real-time monitoring of the viscosity change of the electrolyte can be solved.

Description

Electrolyte viscosity detection method, device, storage medium and electronic device

Technical Field

The present application belongs to the field of battery technology, and more specifically, relates to a method, device, storage medium and electronic device for detecting viscosity of an electrolyte.

Background Art

In the battery field, electrolyte viscosity is one of the key parameters that affect battery performance. In traditional solutions, electrolyte viscosity testing requires the use of sophisticated instruments and reagents, which not only increases costs but also may affect test accuracy due to instrument wear and reagent consumption.

More importantly, these traditional testing methods are usually not convenient for rapid on-site detection and cannot monitor the viscosity changes of the electrolyte in real time, thus limiting their application in battery manufacturing and maintenance processes.

Summary of the invention

The purpose of the embodiments of the present application is to provide a method, device, storage medium and electronic device for detecting the viscosity of an electrolyte, aiming to solve the technical problems in the related art that the detection cost of the electrolyte viscosity testing method is high and it is not convenient to monitor the viscosity change of the electrolyte in real time.

To achieve the above object, according to a first aspect of the present application, a method for detecting viscosity of an electrolyte is provided, the method comprising:

Obtaining a first slip parameter obtained by titrating a first electrolyte, wherein a first viscosity value of the first electrolyte is known;

Performing data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve;

Obtaining a second slip parameter obtained by performing a titration operation on a second electrolyte, wherein the second electrolyte has the same titration operation conditions and electrolyte type as the first electrolyte;

A second viscosity value of the second electrolyte is determined according to the second slip parameter and the electrolyte fitting curve.

Optionally, in a possible implementation of the first aspect, a dripping line is provided on the inclined plate of the titration device, and after the first electrolyte is dripped on the dripping line, the first electrolyte naturally slides from the inclined plate to a flat plate in the titration device connected to the inclined plate;

Obtaining a first slip parameter obtained by titrating the first electrolyte, comprising:

When the first electrolyte stops sliding, reading the scale value corresponding to the stop position of the first electrolyte on the flat plate;

The sliding length value of the first electrolyte is determined according to the scale value corresponding to the stop position of the first electrolyte on the flat plate.

Optionally, in a possible implementation manner of the first aspect, performing data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve includes:

Obtaining the slope of the inclined plate of the titration device, wherein the inclined angle and the inclined height of the inclined plate are fixed;

Obtaining a viscosity constant of the first electrolyte, wherein the viscosity constant is used to characterize the intercept of a fitting curve of the electrolyte;

On the basis of determining the slope and the intercept, data fitting is performed on the first viscosity value and the sliding length value to obtain the electrolyte fitting curve.

Optionally, in a possible implementation of the first aspect, after the second electrolyte is dripped on the drip line, the second electrolyte naturally slides from the inclined plate to a flat plate connected to the inclined plate in the titration device;

Obtaining a second slip parameter obtained by titrating the second electrolyte, including:

When the second electrolyte stops sliding, reading the scale value corresponding to the stop position of the second electrolyte on the flat plate;

The sliding length value of the second electrolyte is determined according to the scale value corresponding to the stop position of the second electrolyte on the flat plate.

Optionally, in a possible implementation manner of the first aspect, determining a second viscosity value of the second electrolyte according to the second slip parameter and the electrolyte fitting curve includes:

Substituting the second slip parameter into the electrolyte fitting curve, a second viscosity value of the second electrolyte is obtained.

According to a second aspect of the present application, a device for detecting viscosity of an electrolyte is provided, the device comprising:

A first acquisition unit is used to acquire a first slip parameter obtained by titrating a first electrolyte, wherein a first viscosity value of the first electrolyte is known;

A fitting unit, configured to perform data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve;

A second acquisition unit is used to acquire a second slip parameter obtained by performing a titration operation on a second electrolyte, wherein the titration operation conditions and electrolyte type of the second electrolyte are the same as those of the first electrolyte;

A determination unit is used to determine a second viscosity value of the second electrolyte according to the second sliding parameter and the electrolyte fitting curve.

Optionally, in a possible implementation of the first aspect, a dripping line is provided on the inclined plate of the titration device, and after the first electrolyte is dripped on the dripping line, the first electrolyte naturally slides from the inclined plate to a flat plate in the titration device connected to the inclined plate;

The first acquisition unit includes:

a reading subunit, used for reading the scale value corresponding to the stop position of the first electrolyte on the flat plate when the first electrolyte stops sliding;

The determination subunit is used to determine the sliding length value of the first electrolyte according to the scale value corresponding to the stop position of the first electrolyte on the flat plate.

Optionally, in a possible implementation manner of the first aspect, the fitting unit includes:

An acquisition subunit is used to acquire the slope of the inclined plate of the titration device, wherein the inclination angle and inclination height of the inclined plate are fixed; and to acquire the viscosity constant of the first electrolyte, wherein the viscosity constant is used to characterize the intercept of the electrolyte fitting curve;

The fitting subunit is used to perform data fitting on the first viscosity value and the sliding length value on the basis of determining the slope and the intercept, so as to obtain the electrolyte fitting curve.

The second aspect and any implementation of the second aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the second aspect and any implementation of the second aspect can refer to the technical effects corresponding to the first aspect and any implementation of the first aspect, which will not be repeated here.

In a third aspect, an embodiment of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the methods described above when executing the computer program.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements any of the methods described above.

In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on an electronic device, the electronic device executes any one of the methods described in the first aspect.

It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

The embodiments of the present application provide a method, device, storage medium and electronic device for detecting the viscosity of an electrolyte. The method for detecting the viscosity of an electrolyte comprises the following steps: obtaining a first slip parameter obtained by performing a titration operation on a first electrolyte, wherein the first viscosity value of the first electrolyte is known; performing data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve; obtaining a second slip parameter obtained by performing a titration operation on a second electrolyte, wherein the second electrolyte has the same titration operation conditions and electrolyte type as the first electrolyte; and determining a second viscosity value of the second electrolyte according to the second slip parameter and the electrolyte fitting curve.

The method provided by the example of this application does not require expensive instruments and reagents, is simple to operate, and can measure viscosity on site at any time and quickly, which is very suitable for occasions where frequent detection of electrolyte viscosity is required. In addition, the method also reduces the loss of solvent, reduces costs and environmental impact. This can solve the technical problems of the electrolyte viscosity test method in the related art, which has high detection costs and is not convenient for real-time monitoring of electrolyte viscosity changes.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic flow chart of a method for detecting viscosity of an electrolyte provided by the present application;

FIG2 is a schematic flow chart of an optional method for detecting viscosity of an electrolyte provided in an embodiment of the present application;

FIG3 is a schematic diagram of an optional titration device provided in an embodiment of the present application;

FIG4 is a schematic flow chart of an optional method for detecting viscosity of an electrolyte provided in an embodiment of the present application;

FIG5 is a schematic diagram of an optional electrolyte fitting curve provided in an embodiment of the present application;

FIG6 is a schematic structural diagram of a device for detecting viscosity of an electrolyte provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

DETAILED DESCRIPTION

In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or combinations thereof.

It should also be understood that the term “and/or” used in the specification and appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

Electrolyte: It is the medium used in chemical batteries, electrolytic capacitors, etc. It acts as a medium for ion migration and ensures that the chemical reactions occurring during work are reversible.

Potential energy mgh: In physics, mgh refers to the potential energy of an object in a gravitational field, where m represents the mass of the object, g represents the acceleration due to gravity, and h represents the height of the object relative to a reference point. Potential energy is the energy an object has due to its position. In a gravitational field, the potential energy of an object is related to its mass and the height at which it is tilted. When an object is raised or lifted a distance, it has more potential energy because gravity does work on it.

Data fitting: also known as curve fitting, commonly known as curve pulling, is a way of expressing existing data by substituting mathematical methods into a numerical expression.

The above is a brief introduction to the nouns involved in the embodiments of the present application, which will not be repeated below.

With the development of battery technology, the demand for real-time monitoring of electrolyte viscosity is growing. Especially in lithium-ion batteries using lithium hexafluorophosphate (LiPF6) as the electrolyte, real-time monitoring of viscosity is essential to ensure battery stability and extend battery life. Although LiPF6 has excellent electrochemical properties, it is easily decomposed in high temperature or humid environments, affecting the viscosity of the electrolyte and the overall performance of the battery. Therefore, developing a simple, practical method that can detect viscosity anytime and anywhere is of great significance to improving battery performance and safety.

Please refer to FIG. 1 , which shows a schematic flow chart of a method for detecting viscosity of an electrolyte provided by the present application. The method for detecting viscosity of an electrolyte includes:

S101, obtaining a first sliding parameter obtained by performing a titration operation on a first electrolyte, wherein a first viscosity value of the first electrolyte is known;

S102, performing data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve;

S103, obtaining a second drop parameter obtained by performing a titration operation on a second electrolyte, wherein the second electrolyte has the same titration operation conditions and electrolyte type as the first electrolyte;

S104, determining a second viscosity value of the second electrolyte according to the second slip parameter and the electrolyte fitting curve.

The embodiment of the present application provides a method for detecting electrolyte viscosity, which aims to simplify the measurement process of electrolyte viscosity through a non-invasive technology that does not require complex equipment.

First, a first electrolyte with a known viscosity value is titrated, and the sliding parameter of the electrolyte during the titration process is recorded. This parameter is a quantitative indicator of the fluidity of the electrolyte and can be obtained by observing the flow time or distance of the electrolyte under certain conditions.

Afterwards, using the known viscosity value and slip parameter of the first electrolyte, an electrolyte fitting curve is obtained through a data fitting method (such as the least squares method), so that the relationship between the viscosity value and the slip parameter can be described by the fitting curve, which can be used to predict the viscosity value of the electrolyte with an unknown viscosity value.

After the above electrolyte fitting curve is obtained by fitting, the second electrolyte with unknown viscosity value is subjected to the same titration operation under the same conditions and type as the first electrolyte, and the second slip parameter is recorded.

Furthermore, the viscosity of the second electrolyte can be determined based on the second slip parameter of the second electrolyte and the previously obtained electrolyte fitting curve. This step does not require direct measurement of the viscosity of the second electrolyte, but is predicted using the established electrolyte fitting curve.

The advantages of the method provided in the example of this application are that it does not require expensive instruments and reagents, is simple to operate, and can measure viscosity on site at any time and quickly, which is very suitable for occasions where electrolyte viscosity needs to be frequently tested. In addition, the method also reduces the loss of solvent, reduces costs and environmental impact.

It should be understood that the applicability of the electrolyte viscosity detection method provided in the example of this application may be affected by the type of electrolyte. Generally speaking, this method is applicable to some electrolytes that can produce reliable slip parameters under titration conditions. For example, for lithium battery electrolytes, viscosity is one of the important factors affecting its ionic conductivity. Therefore, this method is particularly suitable for viscosity measurement of lithium battery electrolytes.

Different electrolyte components, such as the type and ratio of lithium salts and organic solvents, will affect the viscosity of the electrolyte. For example, commonly used organic solvents such as ethylene carbonate (EC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), etc., different mixing ratios or formulation components will result in different electrolyte viscosities. Therefore, when applied to different types of electrolytes, the method may need to be appropriately adjusted or optimized.

In an optional implementation, a drip line is provided on the inclined plate of the titration device, and after the first electrolyte is titrated on the drip line, the first electrolyte naturally slides from the inclined plate to a flat plate connected to the inclined plate in the titration device.

Please refer to FIG. 2 , which shows a schematic flow chart of an optional electrolyte viscosity detection method provided by the present application. The above S101, obtaining a first slip parameter obtained by titrating a first electrolyte, includes:

S201, when the first electrolyte stops sliding, reading the scale value corresponding to the stop position of the first electrolyte on the flat plate;

S202, determining a sliding length value of the first electrolyte according to a scale value corresponding to a stop position of the first electrolyte on the flat plate.

The electrolyte viscosity detection method provided in the example of the present application determines the viscosity of the electrolyte through simplified physical measurement. Specifically, the method utilizes the structural characteristics of the titration device to measure the fluidity of the electrolyte.

In the example of this application, please refer to FIG. 3, which shows a schematic diagram of an optional titration device provided by this application, and the titration device includes an inclined plate and a flat plate connected to the inclined plate. A drip line is provided on the inclined plate to mark the starting sliding position of the electrolyte, and a plurality of scale lines are provided on the flat plate, which are used as examples rather than limitations, and are marked to facilitate direct observation of the sliding distance corresponding to the position where the electrolyte stops sliding.

The first electrolyte is dripped onto the drip line on the inclined plate by the user or the machine performing the titration operation. After that, the first electrolyte will slide down the inclined plate naturally. According to the law of conservation of energy, the potential energy of the first electrolyte mgh=1/2mv2. When it reaches the bottom of the inclined plate, the gravitational potential energy is completely converted into kinetic energy. Subsequently, the first electrolyte will need to overcome friction on the plate. As the kinetic energy is continuously consumed by friction until the kinetic energy is completely consumed, it will finally fall onto the plate and stop.

When the first electrolyte stops sliding, the scale value corresponding to the stop position of the first electrolyte on the plate is read. The sliding length value of the first electrolyte can be determined from the scale value. It should be understood that the sliding length value is a key parameter for viscosity detection and is directly related to the viscosity of the electrolyte.

In the titration device shown in Figure 3, the inclination angle and inclination height of the inclined plate are to provide the electrolyte with a gravitational potential energy before sliding. As an example and not a limitation, the inclination height h of the inclined plate can range from 10-20cm, the inclination angle a can range from 10° to 60°, the length of the inclined plate can be 10-100cm, and the length of the flat plate can be 10-80cm, so as to provide a gravitational potential energy. In the example of this application, the materials of the inclined plate and the parallel plate can be one or more of glass plates, steel plates or other materials with low resistance. It is worth noting that the inclined plate should be made of materials with low friction resistance as much as possible to reduce the influence of resistance.

From the above analysis, the present application example does not require complex instruments or consume a large amount of reagents, and can quickly measure viscosity on site, which is particularly suitable for production environments that require frequent testing of electrolyte viscosity. In addition, this method can also reduce solvent loss, reduce costs and environmental impact.

Please refer to FIG. 4 , which shows a schematic flow chart of an optional electrolyte viscosity detection method provided by the present application. In an optional implementation, data fitting is performed based on a first viscosity value and a first slip parameter to obtain an electrolyte fitting curve, including:

S401, obtaining the slope of the inclined plate of the titration device, wherein the inclined angle and the inclined height of the inclined plate are fixed;

S402, obtaining a viscosity constant of the first electrolyte, wherein the viscosity constant is used to characterize the intercept of a fitting curve of the electrolyte;

S403, based on the determined slope and intercept, data fitting is performed on the first viscosity value and the sliding length value to obtain an electrolyte fitting curve.

In the example of the present application, by obtaining the slope of the inclined plate of the titration device and the viscosity constant of the first electrolyte, data fitting is performed based on the known viscosity value and sliding length value of the first electrolyte to establish an electrolyte fitting curve.

Specifically, first, determine the slope of the inclined plate of the titration device and the viscosity constant of the first electrolyte. The slope is a function of the inclination angle and the inclination height of the inclined plate, and these parameters are fixed. It should be understood that the above viscosity constant is a parameter used to characterize the intercept of the electrolyte fitting curve, which reflects the internal resistance of the electrolyte when it flows freely without external force.

After the slope and viscosity constant are determined, the known viscosity value and the sliding length value of the first electrolyte can be used to perform data fitting to obtain an electrolyte fitting curve. For example, the fitting process may be performed using statistical or mathematical software to ensure the best fit. The electrolyte fitting curve can be expressed as: viscosity value P = slope K × sliding length value L + viscosity constant P0.

In the example of the present application, the principle of predicting the viscosity values of other electrolytes based on the electrolyte fitting curve is: the greater the viscosity of the electrolyte, the harder it is to flow, that is, the greater the friction during the sliding process, resulting in a shorter sliding length L on the plate.

Through the above example, an electrolyte fitting curve can be established to predict the viscosity values of other electrolytes. As long as their slip parameters are obtained under the same conditions, the viscosity values of other electrolytes can be accurately measured. The advantages of this method are simplicity and low equipment requirements. It is an effective means to quickly measure the viscosity of electrolytes on site.

In another optional implementation, after the second electrolyte is titrated on the drip line, the second electrolyte naturally slides from the inclined plate to a flat plate connected to the inclined plate in the titration device;

The above-mentioned obtaining of the second sliding parameter obtained by titrating the second electrolyte includes:

When the second electrolyte stops sliding, reading the scale value corresponding to the stop position of the second electrolyte on the flat plate;

The sliding length value of the second electrolyte is determined according to the scale value corresponding to the stop position of the second electrolyte on the flat plate.

In the example of this application, the viscosity detection process of the second electrolyte is similar to that of the first electrolyte, but for different electrolyte samples, the viscosity value of the second electrolyte is unknown, while the viscosity value of the first electrolyte is known. The second electrolyte is titrated on the preset dripping line on the inclined plate of the titration device, that is, titrated on the starting point where the electrolyte begins to slide.

After the second electrolyte is titrated, the second electrolyte will naturally slide down along the inclined plate and finally reach the flat plate connected to the inclined plate. When the second electrolyte stops sliding, the scale value corresponding to the stop position on the flat plate is recorded, and the sliding length value of the second electrolyte can be determined according to the scale value corresponding to the stop position of the second electrolyte on the flat plate.

Through the example of this application, after obtaining the sliding length value of the second electrolyte, the previously established electrolyte fitting curve can be used to predict the viscosity value of the second electrolyte. This method is not only simple, but also has low equipment requirements, and can realize real-time and rapid measurement of electrolyte viscosity on site.

Optionally, in a possible implementation manner of the first aspect, determining a second viscosity value of the second electrolyte according to the second slip parameter and the electrolyte fitting curve includes:

Substituting the second slip parameter into the electrolyte fitting curve, a second viscosity value of the second electrolyte is obtained.

In the example of this application, the process of determining the viscosity value of the second electrolyte is direct and concise. First, the sliding parameter of the second electrolyte is substituted into the electrolyte fitting curve previously obtained by fitting the first electrolyte data. Through the curve equation, the viscosity value of the second electrolyte can be directly calculated. For example, if the equation of the fitting curve is P=KL+P0, where K and P0 are known, then you only need to substitute the second sliding parameter (ie, the sliding length value) into L in the equation to get the viscosity value P of the second electrolyte.

The above calculation process is easy to operate, and the viscosity value can be obtained in one step. It is very suitable for rapid on-site testing without the need for complex instruments and a large amount of reagents, thus reducing costs and environmental impact.

The viscosity detection method of the electrolyte provided in the example of the present application is explained as follows through an experimental process example:

First of all, it should be explained that for the first electrolyte or the second electrolyte, a drop of electrolyte is first measured using a burette (set to 5uL), and the measured electrolyte is dropped in the middle of the drip line. The electrolyte begins to slide along the inclined plate. According to the law of conservation of energy, mgh=1/2mv2, when it reaches the bottom of the inclined plate, the gravitational potential energy is completely converted into kinetic energy. The subsequent electrolyte will need to overcome friction on the flat plate (a slide plate parallel to the ground). As the kinetic energy is continuously consumed by friction, until the kinetic energy is completely consumed, the electrolyte stops, and the distance the electrolyte bead slides on the flat plate is obtained, that is, the sliding length value L.

First, four first electrolytes with known viscosity values were selected as experimental group 1, experimental group 2, experimental group 3, and experimental group 4 for titration, and the titration data shown in Table 1 were obtained.

The experimental data of the above experimental groups one to four are used for linear analysis, that is, the viscosity value and the sliding length of each group of experimental data are fitted to obtain an optional electrolyte fitting curve shown in Figure 5. The fitting function of the electrolyte fitting curve is: P=2.24-0.09L (where P0 is 2.24 and K is -0.09).

After determining the above electrolyte fitting curve, three electrolytes with unknown viscosity values can be selected for titration calibration, which are respectively recorded as reference group one, reference group two and reference group three. The sliding length values L of the three reference groups are 12.5 cm, 16.7 cm and 9.1 cm, respectively. Substituting into the fitting function formula of the electrolyte fitting curve; y=2.24-0.09L, the viscosity values mPa.s shown in Table 2 are calculated respectively, and the three reference groups are measured respectively using a viscometer. The corresponding viscosity values mPa.s measured by the viscometer are used as a reference for the accuracy of the viscosity value calculated by the electrolyte fitting curve.

As an example and not a limitation, if the error between the viscosity value of the electrolyte determined based on the electrolyte fitting curve in the example of the present application and the viscosity value measured by the viscometer is within 3%, it means that the detection accuracy of the viscosity value calculated by the electrolyte fitting curve is high, and the detection method is simple and does not rely on other precision equipment to achieve accurate detection.

In the examples of this application, as an example and not a limitation, the electrolyte in the electrolyte can be but is not limited to lithium hexafluorophosphate LiPF6, and the solvent component is a mixture of two or more of ethylene carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate, and vinylene carbonate.

This application example provides a new electrolyte viscosity detection method, which does not require complex equipment and a large amount of reagents, and can quickly and accurately measure the viscosity of the electrolyte. The inclined plate and flat plate structure of the titration device are used to determine the viscosity of the electrolyte by measuring the sliding length of the electrolyte, thereby realizing on-site rapid detection of the electrolyte viscosity, which not only reduces the detection cost, but also improves the efficiency of battery production and maintenance.

It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Corresponding to the electrolyte viscosity detection method described in the above embodiment, FIG6 is a schematic diagram of the structure of an electrolyte viscosity detection device provided in an embodiment of the present application. The device can be implemented by software, hardware, or a combination of both to become part or all of a computer device, and the computer device can be the electronic device shown in FIG7.

6, the viscosity detection device of the electrolyte includes:

A first acquisition unit 601 is used to acquire a first sliding parameter obtained by titrating a first electrolyte, wherein a first viscosity value of the first electrolyte is known;

A fitting unit 602 is used to perform data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve;

A second acquisition unit 603 is used to acquire a second slip parameter obtained by performing a titration operation on a second electrolyte, wherein the titration operation conditions and electrolyte type of the second electrolyte are the same as those of the first electrolyte;

The determination unit 604 is used to determine a second viscosity value of the second electrolyte according to the second sliding parameter and the electrolyte fitting curve.

Further, based on any of the above embodiments, as an example of the present application, a drip line is provided on the inclined plate of the titration device, and after the first electrolyte is titrated on the drip line, the first electrolyte naturally slides from the inclined plate to the flat plate connected to the inclined plate in the titration device;

The first acquisition unit includes:

A reading subunit, used for reading the scale value corresponding to the stop position of the first electrolyte on the flat plate when the first electrolyte stops sliding;

The determination subunit is used to determine the sliding length value of the first electrolyte according to the scale value corresponding to the stop position of the first electrolyte on the flat plate.

Further, based on any of the above embodiments, as an example of the present application, the above fitting unit includes:

An acquisition subunit is used to acquire the slope of the inclined plate of the titration device, wherein the inclination angle and inclination height of the inclined plate are fixed; and to acquire the viscosity constant of the first electrolyte, wherein the viscosity constant is used to characterize the intercept of the electrolyte fitting curve;

The fitting subunit is used to perform data fitting on the first viscosity value and the sliding length value on the basis of determining the slope and the intercept, so as to obtain the electrolyte fitting curve.

It should be noted that the viscosity detection device for the electrolyte provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

The functional units and modules in the above embodiments may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit, and the above integrated units may be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the embodiments of the present application.

It should be noted that the information interaction, execution process, etc. between the above-mentioned devices/units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

An embodiment of the present application further provides an electronic device, the electronic device comprising one or more processors and a memory;

The memory is coupled to one or more processors, and the memory is used to store computer program codes, the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the electronic device to execute the above-mentioned electrolyte viscosity detection method.

The electronic device may be a mobile phone, a smart screen, a tablet computer, a wearable electronic device, an in-vehicle electronic device, an augmented reality (AR) device, a virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a projector, or a communication device such as a server, a storage device, a base station, or a smart car, etc. The embodiments of the present application do not impose any restrictions on the specific type of the electronic device.

An embodiment of the present application also provides a computer-readable storage medium, in which computer instructions are stored; when the computer-readable storage medium is run on an electronic device, the electronic device executes the viscosity detection method of the electrolyte shown above.

The above-mentioned computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the above-mentioned computer instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The above-mentioned computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated therein. The above-mentioned available media may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium, or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

The embodiment of the present application also provides a computer program product including computer instructions, which, when executed on an electronic device, enables the electronic device to execute the above-mentioned method for detecting the viscosity of the electrolyte.

The computer storage medium and computer program product provided in the above-mentioned embodiments of the present application are used to execute the method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects corresponding to the method provided above, and will not be repeated here.

In the above embodiments, it can also be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The above computer program product includes one or more computer instructions. When the above computer instructions are loaded and executed on a computer, the above process or function according to the embodiment of the present application is generated in whole or in part. The above computer may be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The above computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the above computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The above computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrated. The available media may be magnetic media (such as floppy disks, hard disks, and magnetic tapes), optical media (such as digital versatile discs (DVDs)), or semiconductor media (such as solid state disks (SSDs)).

Figure 7 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The device may be a mobile phone, a computer, a digital broadcast terminal, a message transceiver, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

Device 700 may include one or more of the following components: a processing component 702 , a memory 704 , a power component 706 , a multimedia component 708 , an audio component 710 , an input/output (I/O) interface 712 , a sensor component 714 , and a communication component 716 .

The processing component 702 generally controls the overall operation of the device 700, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 702 may include one or more processors 720 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 702 may include one or more modules to facilitate the interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate the interaction between the multimedia component 708 and the processing component 702.

The memory 704 is configured to store various types of data to support operations on the device 700. Examples of such data include instructions for any application or method operating on the device 700, contact data, phone book data, messages, pictures, videos, etc. The memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, 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 disk or optical disk.

The power supply component 706 provides power to the various components of the device 700. The power supply component 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 700.

The multimedia component 708 includes a screen that provides an output interface between the above-mentioned device 700 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The above-mentioned touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the above-mentioned touch or slide operation. In some embodiments, the multimedia component 708 includes a front camera and/or a rear camera. When the device 700 is in an operating mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 710 is configured to output and/or input audio signals. For example, the audio component 710 includes a microphone (MIC), and when the device 700 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 704 or sent via the communication component 716. In some embodiments, the audio component 710 also includes a speaker for outputting audio signals.

I/O interface 712 provides an interface between processing component 702 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

The sensor assembly 714 includes one or more sensors for providing various aspects of status assessment for the device 700. For example, the sensor assembly 714 can detect the open/closed state of the device 700, the relative positioning of components, such as the display and keypad of the device 700, the sensor assembly 714 can also detect the position change of the device 700 or a component of the device 700, the presence or absence of user contact with the device 700, the orientation or acceleration/deceleration of the device 700, and the temperature change of the device 700. The sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 714 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 714 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 716 is configured to facilitate wired or wireless communication between the device 700 and other devices. The device 700 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the apparatus 700 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 704 including instructions, and the instructions can be executed by a processor 720 of the device 700 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments applied for herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

In the embodiments provided in the present application, it should be understood that the disclosed devices/network equipment and methods can be implemented in other ways. For example, the device/network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims (10)

1. A method for detecting viscosity of an electrolyte, comprising: Obtaining a first slip parameter obtained by titrating a first electrolyte, wherein a first viscosity value of the first electrolyte is known; Performing data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve; Obtaining a second slip parameter obtained by performing a titration operation on a second electrolyte, wherein the second electrolyte has the same titration operation conditions and electrolyte type as the first electrolyte; A second viscosity value of the second electrolyte is determined according to the second slip parameter and the electrolyte fitting curve. 2. The method according to claim 1, characterized in that a drip line is provided on the inclined plate of the titration device, and after the first electrolyte is titrated on the drip line, the first electrolyte naturally slides from the inclined plate to a flat plate in the titration device connected to the inclined plate; Obtaining a first slip parameter obtained by titrating the first electrolyte, comprising: When the first electrolyte stops sliding, reading the scale value corresponding to the stop position of the first electrolyte on the flat plate; The sliding length value of the first electrolyte is determined according to the scale value corresponding to the stop position of the first electrolyte on the flat plate. 3. The method according to claim 2, characterized in that the data fitting based on the first viscosity value and the first slip parameter to obtain the electrolyte fitting curve comprises: Obtaining the slope of the inclined plate of the titration device, wherein the inclined angle and the inclined height of the inclined plate are fixed; Obtaining a viscosity constant of the first electrolyte, wherein the viscosity constant is used to characterize the intercept of a fitting curve of the electrolyte; On the basis of determining the slope and the intercept, data fitting is performed on the first viscosity value and the sliding length value to obtain the electrolyte fitting curve. 4. The method according to claim 2, characterized in that after the second electrolyte is titrated on the drip line, the second electrolyte naturally slides from the inclined plate to a flat plate connected to the inclined plate in the titration device; Obtaining a second slip parameter obtained by titrating the second electrolyte, including: When the second electrolyte stops sliding, reading the scale value corresponding to the stop position of the second electrolyte on the flat plate; The sliding length value of the second electrolyte is determined according to the scale value corresponding to the stop position of the second electrolyte on the flat plate. 5. The method according to claim 2, characterized in that determining the second viscosity value of the second electrolyte according to the second slip parameter and the electrolyte fitting curve comprises: Substituting the second slip parameter into the electrolyte fitting curve, a second viscosity value of the second electrolyte is obtained. 6. A device for detecting viscosity of an electrolyte, characterized in that the device comprises: A first acquisition unit is used to acquire a first slip parameter obtained by titrating a first electrolyte, wherein a first viscosity value of the first electrolyte is known; A fitting unit, configured to perform data fitting based on the first viscosity value and the first slip parameter to obtain an electrolyte fitting curve; A second acquisition unit is used to acquire a second slip parameter obtained by performing a titration operation on a second electrolyte, wherein the titration operation conditions and electrolyte type of the second electrolyte are the same as those of the first electrolyte; A determination unit is used to determine a second viscosity value of the second electrolyte according to the second sliding parameter and the electrolyte fitting curve. 7. The device according to claim 6, characterized in that a drip line is provided on the inclined plate of the titration device, and after the first electrolyte is titrated on the drip line, the first electrolyte naturally slides from the inclined plate to a flat plate in the titration device connected to the inclined plate; The first acquisition unit includes: a reading subunit, used for reading the scale value corresponding to the stop position of the first electrolyte on the flat plate when the first electrolyte stops sliding; The determination subunit is used to determine the sliding length value of the first electrolyte according to the scale value corresponding to the stop position of the first electrolyte on the flat plate. 8. The device according to claim 7, characterized in that the fitting unit comprises: An acquisition subunit is used to acquire the slope of the inclined plate of the titration device, wherein the inclination angle and inclination height of the inclined plate are fixed; and to acquire the viscosity constant of the first electrolyte, wherein the viscosity constant is used to characterize the intercept of the electrolyte fitting curve; The fitting subunit is used to perform data fitting on the first viscosity value and the sliding length value on the basis of determining the slope and the intercept, so as to obtain the electrolyte fitting curve. 9. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 5 when executing the computer program. 10. A computer-readable storage medium storing a computer program, wherein the computer program implements the method according to any one of claims 1 to 5 when executed by a processor.