Heating temperature determination method and device, electronic equipment, storage medium and product

Abstract

The invention discloses a heating temperature determination method and device, electronic equipment, a storage medium and a product. The method comprises the following steps: acquiring a first reaction rate of a standard sample; according to the first reaction rate, a temperature set is determined, and the temperature set comprises a plurality of heating temperatures; heating the first battery sample by utilizing each heating temperature to obtain the water content of the first battery sample; the target heating temperature is determined from the multiple heating temperatures according to the water content of the first battery sample corresponding to each heating temperature, the target heating temperature is the heating temperature set when the water content of the second battery sample is measured, and in the steps, the reasonable heating temperature can be obtained; the accuracy of the water content test result can be improved by heating the battery sample at the target heating temperature.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery testing, and particularly relates to a heating temperature determination method and device, electronic equipment, a storage medium and a product. BACKGROUND

[0002] In the manufacture of lithium ion batteries, the positive and negative electrode materials, electrolyte and the like are extremely sensitive to moisture content. Moisture can cause electrolyte decomposition, gas expansion, capacity attenuation and even thermal runaway.

[0003] Moisture in battery materials can exist in the form of bound water and free water, such as adsorbed water on the surface of the material and crystal water in the crystal lattice. Such moisture needs to be heated to a certain temperature to separate from the battery material. The existing heating temperature is usually set according to an empirical value or set according to the temperature provided by the water meter manufacturer.

[0004] If the heating temperature is too low, the bound water and free water cannot be fully volatilized, resulting in that the tested moisture is only part of the free water, and the test result is much lower than the actual moisture content. If the heating temperature is too high, additional water can be produced by side reactions, and the test result is much higher than the actual moisture content. That is, setting a fixed heating temperature can cause the heating temperature to be incompatible with the actual moisture content, resulting in low accuracy of the test result. SUMMARY

[0005] The embodiments of the application provide a heating temperature determination method, device, electronic equipment, storage medium and product, which can obtain a reasonable heating temperature, and heating a battery sample using a target heating temperature can improve the accuracy of the moisture content test result.

[0006] In a first aspect, the embodiments of the application provide a heating temperature determination method, which comprises:

[0007] obtaining a first reaction rate of a standard sample;

[0008] determining a temperature set according to the first reaction rate, the temperature set comprising a plurality of heating temperatures;

[0009] heating a first battery sample using each of the heating temperatures to obtain the moisture content of the first battery sample;

[0010] determining a target heating temperature from the plurality of heating temperatures according to the moisture content of the first battery sample corresponding to each of the heating temperatures, the target heating temperature being a heating temperature set for moisture content determination of a second battery sample.

[0011] In an embodiment of the application, the obtaining of the first reaction rate of the standard sample comprises:

[0012] obtaining an electrolytic current average value or an electrolytic electric quantity of the standard sample within a first preset time length when the standard sample is subjected to moisture content determination;

[0013] determining a first reaction rate of the standard sample according to the first preset time length and the electrolytic current average value, or determining the first reaction rate of the standard sample according to the first preset time length and the electrolytic electric quantity.

[0014] In an embodiment of the present application, the first reaction rate of the standard sample is obtained by:

[0015] In the process of moisture content determination of the standard sample by using a moisture content determination device, the gas inlet rate of the gas in the dry gas generator into the reaction cup, the temperature of the gas, and the dew point temperature of the gas at the same time are obtained, the moisture content determination device comprising the dry gas generator and the reaction cup;

[0016] The first reaction rate of the standard sample is determined according to the gas inlet rate, the temperature of the gas, and the dew point temperature of the gas.

[0017] In an embodiment of the present application, the temperature set is determined according to the first reaction rate, comprising:

[0018] The temperature corresponding to the first reaction rate is obtained from a first corresponding relationship, the first corresponding relationship comprising a plurality of reaction rates and a temperature corresponding to each reaction rate;

[0019] The temperature interval is determined according to the temperature corresponding to the first reaction rate.

[0020] The lower boundary value of the temperature interval is added to a preset temperature step to obtain a first temperature.

[0021] The upper boundary value of the temperature interval is subtracted by a preset temperature step to obtain a second temperature.

[0022] The upper boundary value, the lower boundary value, the first temperature, and the second temperature are added to the temperature set as heating temperatures.

[0023] In an embodiment of the present application, the target heating temperature is determined from a plurality of heating temperatures according to the water content of the first battery sample corresponding to each heating temperature, comprising:

[0024] The target water content is determined according to the water content of the first battery sample corresponding to each heating temperature.

[0025] The heating temperature corresponding to the target water content in a plurality of heating temperatures is determined as the target heating temperature.

[0026] In an embodiment of the present application, the target water content is determined according to the water content of the first battery sample corresponding to each of the heating temperatures.

[0027] The water contents of the first battery samples corresponding to the plurality of heating temperatures are sorted from large to small, and a first water content and a second water content are selected, the first water content being greater than the second water content;

[0028] The first water content is multiplied by a preset deviation to obtain a first value;

[0029] If a second value is less than or equal to the first value, the second water content is taken as the target water content, the second value being a difference between the first water content and the second water content;

[0030] If the second value is greater than the first value, the first water content is taken as the target water content.

[0031] In a second aspect, an embodiment of the present application provides a heating temperature determination device, the device comprising:

[0032] An acquisition module configured to acquire a first reaction rate of a standard sample;

[0033] A first determination module configured to determine a temperature set according to the first reaction rate, the temperature set comprising a plurality of heating temperatures;

[0034] A processing module configured to heat a first battery sample at each of the heating temperatures to obtain a water content of the first battery sample;

[0035] A second determination module configured to determine a target heating temperature from the plurality of heating temperatures according to the water content of the first battery sample corresponding to each of the heating temperatures, the target heating temperature being a heating temperature set when a second battery sample is subjected to water content determination.

[0036] In a third aspect, an embodiment of the present application provides an electronic device, comprising a processor and a memory having computer program instructions stored thereon;

[0037] The processor, when executing the computer program instructions, implements the heating temperature determination method according to the first aspect.

[0038] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium having computer program instructions stored thereon, the computer program instructions, when executed by a processor, implementing the heating temperature determination method according to the first aspect.

[0039] In a fifth aspect, an embodiment of the present application provides a computer program product, instructions in the computer program product are executed by a processor of an electronic device to cause the electronic device to perform the heating temperature determination method according to the first aspect.

[0040] The heating temperature determination method, the device, the electronic device and the storage medium provided by the embodiments of the present application can obtain the first reaction rate of the standard sample, determine a temperature set according to the first reaction rate, the temperature set including a plurality of heating temperatures, heat the first battery sample by using each of the heating temperatures to obtain the water content of the first battery sample, and determine a target heating temperature from the plurality of heating temperatures according to the water content of the first battery sample corresponding to each of the heating temperatures, the target heating temperature being the heating temperature set when the second battery sample is subjected to the water content determination. In the above steps, a reasonable heating temperature can be obtained, and the accuracy of the water content test result can be improved by heating the battery sample by using the target heating temperature. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced. For those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0042] Figure 1 FIG. 1 is a flowchart of a heating temperature determination method provided by an embodiment of the present application;

[0043] Figure 2 FIG. 3 is a structural diagram of a heating temperature determination device provided by an embodiment of the present application;

[0044] Figure 3 FIG. 4 is a structural diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0045] The features and exemplary embodiments of each aspect of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. The present application can be implemented without some of the specific details by those skilled in the art. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0046] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent in such a process, method, article or device. Without more limitations, the elements defined by the statement "comprise" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0047] To solve the problems in the prior art, the embodiments of the present application provide a heating temperature determination method, device, electronic equipment, storage medium and product. First, the heating temperature determination method provided by the embodiments of the present application is introduced.

[0048] Figure 1 The flowchart of the heating temperature determination method provided by an embodiment of the present application is shown. As shown in Figure 1 The heating temperature determination method provided by the embodiments of the present application is applied to electronic equipment, such as a server, and includes the following steps 101-104, wherein:

[0049] Step 101: obtaining a first reaction rate of a standard sample.

[0050] The standard sample can be a solid standard sample or a liquid standard sample. The solid standard sample can be sodium tartrate, and the liquid standard sample can be water. The first reaction rate of the standard sample can be an initial reaction rate, and the initial reaction rate can be equal to a terminal reaction rate. The first reaction rate can also be a terminal reaction rate.

[0051] Before the test, the accuracy of the water content measuring device needs to be verified, such as Karl Fischer water meter, using a 200ppm liquid standard sample for test verification, and recording the electrolytic current data with a current recorder, with a tolerance standard of ±(5% test point + 3) μg. Or, using a solid standard sample containing a standard value of 200 μg of water for test verification, and recording the electrolytic current data with a current recorder at the same time, with a tolerance standard of ±(5% test point + 3) μg. The heating temperature of the heating device of the water content measuring device, such as the car oven, is verified by using a temperature recorder, with a tolerance standard of ±3℃. The test environment is an ambient temperature of 20℃±5℃ and an ambient humidity of ≤85% RH; the water content measuring device includes a flask, which is pre-placed in a forced air drying oven for drying, such as a temperature of 100℃ for 4h. According to the estimated water content of the standard sample, the weight of the measured water (200-500) μg of the sample is calculated. Further, the dew point of the gas in the reaction cup entering the water content measuring device is measured by using a dew point meter, and the mapping relationship between the gas dew point and the gas volume fraction is obtained, which is one-to-one corresponding. According to the mapping relationship, the gas volume fraction corresponding to the gas dew point in the reaction cup is determined, and the electrolytic current is calculated by substituting the gas volume fraction into the following formula, as shown below:

[0052]

[0053] Wherein, I is the current electrolysis value (unit: μA), Q is the sample gas flow (mL / min), p is the environmental pressure (Pa), T0 is the environmental temperature under standard state, F is the Faraday constant, p0 is the environmental pressure under standard state, U is the gas volume fraction, T1 is the absolute temperature of the environment (unit: K), V1 is the molar volume of the sample under standard state (unit: L / mol).

[0054] Further, the boiling point temperature of water 100℃ can be used as the starting heating temperature of the heating device, and the highest heating temperature of the heating device can be used as the termination temperature, the temperature rising time is 1h, and the temperature rising curve of the heating device is set, which includes multiple time points and the corresponding temperature of each time point.

[0055] Step 102, determining a temperature set according to the first reaction rate, the temperature set including a plurality of heating temperatures.

[0056] In this embodiment, the temperature set is determined according to the first reaction rate of the standard sample, and the temperature set includes a plurality of heating temperatures, wherein the plurality of heating temperatures are different from each other.

[0057] Step 103, heating the first battery sample with each of the heating temperatures to obtain the water content of the first battery sample.

[0058] In the embodiment, the first battery sample is heated at each heating temperature to obtain a water content of the first battery sample, each heating temperature corresponds to a water content, the water content obtained by heating the sample at different heating temperatures is also different, and the same heating time is adopted in the heating process.

[0059] Optionally, the iodine generated by electrolysis reacts with water in the sample, and the water content is calculated according to the amount of electricity consumed in the electrolysis process. In the electrolytic cell, the electrolysis reaction generates iodine, which reacts with water to form Karl Fischer reaction, and the water content is determined by Faraday's law of electrolysis, and the water content is calculated by the following formula:

[0060]

[0061] Wherein, w is the mass fraction of water in the battery sample (%) that is the water content, Q is the amount of electricity consumed in the electrolysis process (milli coulomb), 18 is the molar mass of water (unit: g / mol), F is the Faraday constant (unit: C / mol), and m is the mass of the battery sample (unit: g).

[0062] In step 104, a target heating temperature is determined from the plurality of heating temperatures according to the water content of the first battery sample corresponding to each heating temperature, and the target heating temperature is a heating temperature set when the water content of the second battery sample is determined.

[0063] In the embodiment, the target heating temperature is determined from the plurality of heating temperatures according to the water content of the first battery sample corresponding to each heating temperature, and the target heating temperature is a heating temperature set when the water content of the second battery sample is determined. The target heating temperature is used to heat the second battery sample, and the first battery sample and the second battery sample can be the same sample or different samples. The battery sample includes a lithium ion battery solid sample.

[0064] In the embodiment, the first reaction rate of the standard sample is obtained, the temperature set is determined according to the first reaction rate, the temperature set includes a plurality of heating temperatures, the first battery sample is heated at each heating temperature to obtain a water content of the first battery sample, and the target heating temperature is determined from the plurality of heating temperatures according to the water content of the first battery sample corresponding to each heating temperature. A reasonable heating temperature can be obtained, and the accuracy of the water content test result can be improved by heating the battery sample at the target heating temperature.

[0065] In an embodiment of the present application, the first reaction rate of the standard sample is obtained, including:

[0066] The average electrolytic current or electrolytic electric quantity of the standard sample in a first preset time period when the water content of the standard sample is determined is obtained.

[0067] According to the first preset time length and the electrolysis current average value, a first reaction rate of the standard sample is determined, or according to the first preset time length and the electrolysis electric quantity, a first reaction rate of the standard sample is determined.

[0068] In the embodiment, the electrolysis current average value or the electrolysis electric quantity in a period of time is obtained, and the reaction rate is calculated. Specifically, the electrolysis current average value or the electrolysis electric quantity of the standard sample in a first preset time length when the moisture content of the standard sample is determined is obtained, the first reaction rate of the standard sample is calculated according to the first preset time length and the electrolysis current average value, and specifically:

[0069]

[0070] Wherein, V0 is the first reaction rate (unit: ug / s), I is the electrolysis current average value (unit: mA), and t is the first preset time length (unit: s).

[0071] Or, the first reaction rate of the standard sample is calculated according to the first preset time length and the electrolysis electric quantity, and specifically:

[0072]

[0073] Wherein, V0 is the first reaction rate, Q is the electrolysis electric quantity, and t is the first preset time length.

[0074] Optionally, the current electrolysis average value is obtained by using a current measuring instrument to measure a plurality of current electrolysis values in the first preset time length, and the current electrolysis average value is calculated according to the plurality of current electrolysis values.

[0075] The above-mentioned way can calculate a relatively accurate reaction rate.

[0076] In an embodiment of the present application, the first reaction rate of the standard sample is obtained, including:

[0077] In the process of determining the moisture content of the standard sample by using the moisture content determination device, the gas inlet rate of the gas in the dry gas generator into the reaction cup, the temperature of the gas and the dew point temperature of the gas at the same time are obtained, and the moisture content determination device includes the dry gas generator and the reaction cup.

[0078] According to the gas inlet rate, the temperature of the gas and the dew point temperature of the gas, the first reaction rate of the standard sample is determined.

[0079] The moisture content measuring device can be a Karl Fischer moisture meter, and the moisture content measuring device includes a dry gas generator and a reaction cup. In the process of measuring the moisture content of the standard sample by using the moisture content measuring device, the gas inlet rate of the gas in the dry gas generator into the reaction cup, the temperature of the gas, and the dew point temperature of the gas at the same time are obtained. The first reaction rate of the standard sample is calculated according to the gas inlet rate, the temperature of the gas, and the dew point temperature of the gas, and the calculation is specifically as follows:

[0080]

[0081] wherein V0 is the first reaction rate (ug / min), V in is the gas inlet rate (unit: ml / min), is the molar mass of water, R is the gas constant, T is the temperature of the gas (unit: ℃), and T d is the dew point temperature of the gas (unit: ℃).

[0082] The calculation method of the reaction rate is provided, and a relatively accurate reaction rate can be obtained.

[0083] In an embodiment of the present application, the temperature set is determined according to the first reaction rate, and the temperature set includes:

[0084] The temperature corresponding to the first reaction rate is obtained from the first corresponding relationship, and the first corresponding relationship includes a plurality of reaction rates and the temperature corresponding to each reaction rate.

[0085] The temperature interval is determined according to the temperature corresponding to the first reaction rate.

[0086] The lower boundary value of the temperature interval is added to the preset temperature step length to obtain a first temperature.

[0087] The upper boundary value of the temperature interval is subtracted from the preset temperature step length to obtain a second temperature.

[0088] The upper boundary value, the lower boundary value, the first temperature, and the second temperature are added to the temperature set as heating temperatures.

[0089] In the embodiment, the first corresponding relationship is obtained, the first corresponding relationship includes a plurality of reaction rates and the temperature corresponding to each reaction rate, the first reaction rate is matched with the reaction rate in the first corresponding relationship, the temperature corresponding to the reaction rate matched with the first reaction rate in the first corresponding relationship is obtained from the first corresponding relationship, and the temperature corresponding to the first reaction rate is obtained.

[0090] According to the first curve corresponding to the standard sample and the temperature rising curve, a first corresponding relationship is obtained, the first curve includes a plurality of time points and a reaction rate corresponding to each time point, and the temperature rising curve includes a plurality of time points and a temperature corresponding to each time point, and the reaction rate corresponding to the same time point in the first curve and the temperature rising curve and the corresponding temperature are obtained, so as to obtain the corresponding relationship between the reaction rate and the temperature.

[0091] Further, the temperature corresponding to the first reaction rate is taken as a lower boundary value, a preset value is added to the lower boundary value to obtain an upper boundary value, and the temperature interval is formed by the lower boundary value and the upper boundary value, wherein the preset value is determined according to the first reaction rate and a preset threshold value, and the absolute value of the difference between the reaction rate corresponding to any one temperature in the temperature interval and the first reaction rate is less than the preset threshold value, wherein the reaction rate of the lower boundary value and the reaction rate of the upper boundary form a flat section.

[0092] The moisture content determination device includes a flask and a heating device, the heating device is located at the lower end of the flask, and is used for heating the sample in the flask. Because there is a temperature distribution deviation in the flask, the temperature interval is adjusted on the basis of the lower boundary value and the upper boundary value of the temperature interval, the lower boundary value of the temperature interval is added by a preset temperature step to obtain a first temperature, and the preset temperature can be set to 10℃; the upper boundary value of the temperature interval is subtracted by a preset temperature step to obtain a second temperature; further, the upper boundary value, the lower boundary value, the first temperature and the second temperature are added to the temperature set as heating temperatures.

[0093] It should be noted that the temperature is not limited to the above-mentioned temperature, and other suitable temperatures can also be included in the temperature set.

[0094] The temperature interval corresponding to the flat section is obtained through the first reaction rate, and the temperature interval and the temperature obtained on the basis of the temperature interval are taken as heating temperatures, so that the battery sample is heated in a targeted manner.

[0095] In an embodiment of the present application, the target heating temperature is determined from the plurality of heating temperatures according to the moisture content of the first battery sample corresponding to each heating temperature, and the target heating temperature is determined from the plurality of heating temperatures according to the moisture content of the first battery sample corresponding to each heating temperature.

[0096] According to the moisture content of the first battery sample corresponding to each heating temperature, a target moisture content is determined;

[0097] The heating temperature corresponding to the target moisture content in the plurality of heating temperatures is determined as the target heating temperature.

[0098] In the embodiment, the target water content is determined according to the water content of the first battery sample corresponding to each heating temperature, the target water content is determined according to the maximum water content and the second maximum water content in the plurality of water contents, and the heating temperature corresponding to the target water content in the plurality of heating temperatures is determined as the target heating temperature.

[0099] By determining the target water content from the plurality of water contents, the target heating temperature is determined according to the target water content, the water content is matched with the heating temperature, the internal correlation between the water content and the temperature is utilized, the final temperature is more suitable for the actual demand, and the accuracy of the subsequent water content test result is improved.

[0100] In an embodiment of the present application, the target water content is determined according to the water content of the first battery sample corresponding to each heating temperature, and the target water content is determined according to the maximum water content and the second maximum water content in the plurality of water contents.

[0101] The water contents of the first battery samples corresponding to the plurality of heating temperatures are sorted from large to small, the first water content and the second water content in the front are selected, and the first water content is greater than the second water content.

[0102] The first water content is multiplied by a preset deviation to obtain a first value.

[0103] If the second value is less than or equal to the first value, the second water content is taken as the target water content, and the second value is the difference between the first water content and the second water content.

[0104] If the second value is greater than the first value, the first water content is taken as the target water content.

[0105] In the embodiment, the water contents of the first battery samples corresponding to the plurality of heating temperatures are sorted from large to small, the first water content and the second water content in the front are selected, the first water content is the maximum water content, the first water content is greater than the second water content, and the second water content is the second maximum water content next to the maximum water content.

[0106] The maximum water content can be abnormally high due to accidental factors, and can be an abnormal value. At this time, the difference between the maximum water content and the second largest water content is significantly large, and therefore a deviation is set in advance. The first water content is multiplied by the preset deviation to obtain a first value. For example, the preset deviation can be set to 0.5%. Further, the difference between the first water content and the second water content is calculated to obtain a second value. The first value and the second value are compared. If the second value is less than or equal to the first value, it indicates that the difference between the maximum water content and the second largest water content is within a reasonable range and can be normal fluctuation. At this time, the maximum water content is more likely to be the actual water content of the battery sample, that is, the first water content is taken as the target water content. If the second value is greater than the first value, that is, 0.5% of the maximum water content, it indicates that the heating temperature can be too high, and a side reaction can occur to generate additional water. The maximum water content can be an abnormal value. The second largest water content can avoid such errors, that is, the second water content is taken as the target water content.

[0107] The above screening method distinguishes between true values and abnormal values by quantifying the gap, thereby ensuring the reliability of the target water content and enhancing the objectivity of the method. The method is suitable for experimental or industrial production scenarios that need to select a reasonable target value from multiple water content data.

[0108] Figure 2 A structure diagram of a heating temperature determination apparatus provided by an embodiment of the present application is shown. As shown in Figure 2 The heating temperature determination apparatus 200 includes:

[0109] The acquisition module 201 is configured to acquire a first reaction rate of a standard sample.

[0110] The first determination module 202 is configured to determine a temperature set according to the first reaction rate, the temperature set including a plurality of heating temperatures.

[0111] The processing module 203 is configured to heat a first battery sample by using each of the heating temperatures to obtain a water content of the first battery sample.

[0112] The second determination module 204 is configured to determine a target heating temperature from the plurality of heating temperatures according to the water content of the first battery sample corresponding to each of the heating temperatures, the target heating temperature being a heating temperature set when a second battery sample is subjected to water content determination.

[0113] In an embodiment of the present application, the acquisition module 201 includes a first acquisition sub-module and a first determination sub-module.

[0114] The first acquisition sub-module is configured to acquire an average electrolytic current or an electrolytic electric quantity of the standard sample within a first preset time length when the standard sample is subjected to water content determination.

[0115] The first determining sub-module is configured to determine a first reaction rate of the standard sample according to the first preset time length and the average electrolysis current, or determine the first reaction rate of the standard sample according to the first preset time length and the electrolysis electric quantity.

[0116] In an embodiment of the present application, the acquisition module 201 comprises a second acquisition sub-module and a second determining sub-module.

[0117] The second acquisition sub-module is configured to acquire, in a process of measuring the moisture content of the standard sample by using a moisture content measuring device, an air inlet rate of gas in the dry gas generator into the reaction cup, a temperature of the gas, and a dew point temperature of the gas at the same time, the moisture content measuring device comprising the dry gas generator and the reaction cup.

[0118] The second determining sub-module is configured to determine the first reaction rate of the standard sample according to the air inlet rate, the temperature of the gas, and the dew point temperature of the gas.

[0119] In an embodiment of the present application, the first determining module 202 comprises a third acquisition sub-module, a third determining sub-module, a calculating sub-module, and an adding sub-module.

[0120] The third acquisition sub-module is configured to acquire, from a first corresponding relationship, a temperature corresponding to the first reaction rate, the first corresponding relationship comprising a plurality of reaction rates and a temperature corresponding to each reaction rate.

[0121] The third determining sub-module is configured to determine a temperature interval according to the temperature corresponding to the first reaction rate.

[0122] The calculating sub-module is configured to add a preset temperature step to a lower boundary value of the temperature interval to obtain a first temperature, and subtract the preset temperature step from an upper boundary value of the temperature interval to obtain a second temperature.

[0123] The adding sub-module is configured to add the upper boundary value, the lower boundary value, the first temperature, and the second temperature to the temperature set as heating temperatures.

[0124] In an embodiment of the present application, the second determining module 204 comprises a fourth determining sub-module and a fifth determining sub-module.

[0125] The fourth determining sub-module is configured to determine a target moisture content according to a moisture content of each first battery sample corresponding to each heating temperature.

[0126] The fifth determining sub-module is configured to determine, as the target heating temperature, a heating temperature corresponding to the target moisture content from among the plurality of heating temperatures.

[0127] In an embodiment of the present application, the fourth determining sub-module comprises a sorting subunit, a calculating subunit and a determining subunit.

[0128] The sorting subunit sorts the water content of the first battery samples corresponding to the plurality of heating temperatures from large to small, selects a first water content and a second water content in the front, and the first water content is greater than the second water content.

[0129] The calculating subunit multiplies the first water content by a preset deviation to obtain a first value.

[0130] The determining subunit determines that the second water content is the target water content if a second value is less than or equal to the first value, and the second value is a difference between the first water content and the second water content; and determines that the first water content is the target water content if the second value is greater than the first value.

[0131] The heating temperature determination device provided by the embodiments of the present application can realize the processes of the foregoing heating temperature determination method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0132] Figure 3 A hardware structure schematic diagram of an electronic device provided by an embodiment of the present application is shown.

[0133] The electronic device can include a processor 301 and a memory 302 having computer program instructions stored therein.

[0134] Specifically, the processor 301 described above can include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or can be configured to implement one or more integrated circuits of the embodiments of the present application.

[0135] The memory 302 can include a mass storage for data or instructions. By way of example and not limitation, the memory 302 can include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 302 can include removable or non-removable (or fixed) media. Where appropriate, the memory 302 can be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, the memory 302 is a non-volatile solid-state memory.

[0136] The memory can include read-only memory (ROM), random access memory (RAM), magnetic disk storage mediums devices, optical storage mediums devices, flash memory devices, electrical, optical, or other physical / tangible memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software that, when executed (by one or more processors), is operable to perform the operations described with reference to the methods according to the first aspect or the second aspect of the present disclosure.

[0137] The processor 301 implements the method described above in any one of the embodiments by reading and executing computer program instructions stored in the memory 302.

[0138] In one example, the electronic device can further include a communication interface 303 and a bus 310. Wherein, as shown, the processor 301, the memory 302, the communication interface 303 are connected through the bus 310 and complete the communication between each other. Figure 3

[0139] The communication interface 303 is mainly used to realize the communication between each module, device, unit and / or equipment in the embodiments of the present application.

[0140] The bus 310 includes hardware, software or both to couple the components of the method or electronic device as described above to each other. By way of example, and not limitation, the bus can include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable bus or combination of two or more of these. Where appropriate, the bus 310 can include one or more buses. Although the present embodiments describe and show a particular bus, the present application contemplates any suitable bus or interconnect.

[0141] In addition, the embodiments of the present application can be provided to implement a computer storage medium. The computer storage medium has computer program instructions stored thereon; the computer program instructions are executed by a processor to implement any one of the heating temperature determination methods in the above embodiments.

[0142] ​In addition, an embodiment of the present application can be implemented as a computer program product, and instructions in the computer program product are executed by a processor of an electronic device to enable the electronic device to implement any of the heating temperature determination methods described above.

[0143] It should be noted that the present application is not limited to the particular configurations and processes described above and illustrated in the drawings. Detailed descriptions of well-known methods are omitted so as not to obscure the description of the present application. In the above-described embodiments, several specific steps are described as examples. However, the method processes of the present application are not limited to the specific steps described, and one of ordinary skill in the art can make various changes, modifications, and additions, or change the order of the steps, after understanding the spirit of the present application.

[0144] The functional blocks shown in the structural block diagrams described above can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of the present application are program or code segments used to perform the required tasks. The program or code segments can be stored in a machine-readable medium or transmitted through a data signal carried in a carrier wave over a transmission medium or communication link. The "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of the machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segments can be downloaded via a computer network such as the Internet, an intranet, etc.

[0145] It should also be noted that the exemplary embodiments described in the present application are based on a series of steps or devices to describe some methods or systems. However, the present application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in an order different from the embodiments, or several steps can be performed simultaneously.

[0146] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0147] The above only is a specific implementation of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described herein. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements shall be covered within the protection scope of the present application.

Claims

1. A method for determining a heating temperature, characterized in that: The method comprises: Obtain the first reaction rate of the standard sample; determining a temperature set according to the first reaction rate, wherein the temperature set includes a plurality of heating temperatures; heating the first battery sample at each of the heating temperatures to obtain the water content of the first battery sample; According to the water content of the first battery sample corresponding to each heating temperature, a target heating temperature is determined from the multiple heating temperatures, and the target heating temperature is the heating temperature set when measuring the water content of the second battery sample.

2. The method for determining the heating temperature according to claim 1, wherein: The obtaining of the first reaction rate of the standard sample comprises: Obtaining an average electrolysis current or electrolysis quantity of the standard sample within a first preset time period when measuring the moisture content of the standard sample; The first reaction rate of the standard sample is determined according to the first preset time and the average electrolysis current, or the first reaction rate of the standard sample is determined according to the first preset time and the electrolysis quantity.

3. The method for determining the heating temperature according to claim 1, wherein: The obtaining of the first reaction rate of the standard sample comprises: During the process of measuring the moisture content of the standard sample using a moisture content measuring device, obtaining the gas inlet rate, gas temperature, and gas dew point temperature of the dry gas generator entering the reaction cup at the same time, the moisture content measuring device including the dry gas generator and the reaction cup; A first reaction rate of the standard sample is determined according to the gas feed rate, the temperature of the gas, and the dew point temperature of the gas.

4. The method for determining the heating temperature according to claim 1, wherein: The determining of a temperature set according to the first reaction rate includes: Obtaining a temperature corresponding to the first reaction rate from a first corresponding relationship, where the first corresponding relationship includes a plurality of reaction rates and a temperature corresponding to each reaction rate; determining a temperature range according to the temperature corresponding to the first reaction rate; Adding the lower boundary value of the temperature interval to the preset temperature step to obtain a first temperature; Subtracting the upper boundary value of the temperature interval from the preset temperature step to obtain a second temperature; The upper boundary value, the lower boundary value, the first temperature, and the second temperature are added to the temperature set as heating temperatures.

5. The method for determining the heating temperature according to claim 1, wherein: The step of determining a target heating temperature from the plurality of heating temperatures according to the water content of the first battery sample corresponding to each heating temperature includes: determining a target water content according to the water content of the first battery sample corresponding to each of the heating temperatures; A heating temperature corresponding to the target moisture content among the plurality of heating temperatures is determined as the target heating temperature.

6. The method for determining the heating temperature according to claim 5, wherein: The determining the target water content according to the water content of the first battery sample corresponding to each heating temperature includes: sorting the water contents of the plurality of first battery samples corresponding to the heating temperatures from largest to smallest, and selecting the first water content and the second water content that are ranked first, wherein the first water content is greater than the second water content; multiplying the first moisture content by a preset deviation to obtain a first value; If the second value is less than or equal to the first value, the second moisture content is used as the target moisture content, and the second value is the difference between the first moisture content and the second moisture content; If the second value is greater than the first value, the first moisture content is used as the target moisture content.

7. A heating temperature determination device, characterized in that: The device comprises: An acquisition module, used for acquiring a first reaction rate of a standard sample; a first determining module, configured to determine a temperature set according to the first reaction rate, the temperature set comprising a plurality of heating temperatures; a processing module, configured to heat the first battery sample using each of the heating temperatures to obtain a water content of the first battery sample; The second determining module is used to determine a target heating temperature from the multiple heating temperatures according to the water content of the first battery sample corresponding to each heating temperature, wherein the target heating temperature is a heating temperature set when measuring the water content of the second battery sample.

8. An electronic device, characterized in that: include: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the method for determining the heating temperature according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the method for determining the heating temperature according to any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the heating temperature determination method according to any one of claims 1 to 6.

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