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

Abstract

The application discloses a heating temperature determination method and device, electronic equipment, storage medium and product. The method comprises the following steps: obtaining a first reaction rate of a standard sample; determining a temperature set according to the first reaction rate, wherein the temperature set comprises a plurality of heating temperatures; heating a first battery sample by using each heating temperature to obtain the water content of the first battery sample; and 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, wherein the target heating temperature is a heating temperature set for water content determination of a second battery sample. 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.

Description

Technical Field

[0001] This application belongs to the field of battery testing technology, and in particular relates to a method, apparatus, electronic device, storage medium and product for determining heating temperature. Background Technology

[0002] In lithium-ion battery manufacturing, the positive and negative electrode materials, electrolytes, and other components are extremely sensitive to moisture content. Moisture can cause electrolyte decomposition, gas production and expansion, capacity decay, and even thermal runaway.

[0003] Moisture in battery materials may exist in the form of bound water and free water, such as water adsorbed on the material surface and water of crystallization in the crystal lattice. This type of moisture needs to be heated to a certain temperature to be removed from the battery material. The existing heating temperature is usually set based on empirical values ​​or the temperature set by the moisture meter manufacturer.

[0004] If the heating temperature is too low, bound water and free water cannot fully evaporate, resulting in the measured moisture content being only partially free water, which is far lower than the actual moisture content. If the heating temperature is too high, side reactions will occur, producing additional water, resulting in a measured moisture content far higher than the actual moisture content. In other words, setting a fixed heating temperature may cause the heating temperature to be mismatched with the actual moisture content, leading to low accuracy of the test results. Summary of the Invention

[0005] This application provides a heating temperature determination method, apparatus, electronic device, storage medium, and product, which can obtain a reasonable heating temperature. Heating the battery sample with the target heating temperature can improve the accuracy of the water content test results.

[0006] In a first aspect, embodiments of this application provide a method for determining a heating temperature, the method comprising:

[0007] Obtain the first reaction rate of the standard sample;

[0008] Based on the first reaction rate, a temperature set is determined, the temperature set including multiple heating temperatures;

[0009] The first battery sample is heated using each of the aforementioned heating temperatures to obtain the water content of the first battery sample;

[0010] Based on the water content of the first battery sample corresponding to each of the heating temperatures, a target heating temperature is determined from a plurality of heating temperatures. The target heating temperature is the heating temperature set when the water content of the second battery sample is measured.

[0011] In one embodiment of this application, the first reaction rate for obtaining the standard sample includes:

[0012] The average value of the electrolytic current or the amount of electrolysis charge of the standard sample within a first preset time period is obtained when the moisture content of the standard sample is determined.

[0013] The first reaction rate of the standard sample is determined based on the first preset duration and the average value of the electrolysis current, or the first reaction rate of the standard sample is determined based on the first preset duration and the amount of electrolysis current.

[0014] In one embodiment of this application, the first reaction rate for obtaining the standard sample includes:

[0015] During the process of determining the moisture content of the standard sample using a moisture content measuring device, the gas inlet rate, gas temperature, and gas dew point temperature of the gas entering the reaction cup from the drying gas generator are obtained at the same time. The moisture content measuring device includes the drying gas generator and the reaction cup.

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

[0017] In one embodiment of this application, determining the temperature set based on the first reaction rate includes:

[0018] The temperature corresponding to the first reaction rate is obtained from the first correspondence, which includes multiple reaction rates and the temperature corresponding to each reaction rate;

[0019] Determine the temperature range based on the temperature corresponding to the first reaction rate;

[0020] The first temperature is obtained by adding the lower boundary value of the temperature range to the preset temperature step size;

[0021] The second temperature is obtained by subtracting the upper boundary value of the temperature range from the preset temperature step size.

[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 one embodiment of this application, determining the target heating temperature from a plurality of heating temperatures based on the water content of the first battery sample corresponding to each heating temperature includes:

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

[0025] The heating temperature corresponding to the target moisture content among the multiple heating temperatures is determined as the target heating temperature.

[0026] In one embodiment of this application, determining the target water content based on the water content of the first battery sample corresponding to each heating temperature includes:

[0027] The water content of the first battery samples corresponding to the heating temperatures is sorted from largest to smallest, and the first and second water contents that are ranked first are selected, wherein the first water content is greater than the second water content.

[0028] Multiply the first moisture content by the preset deviation to obtain the first value;

[0029] If the second value is less than or equal to the first value, then the first moisture content is taken as the target moisture content, and the second value is the difference between the first moisture content and the second moisture content.

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

[0031] Secondly, embodiments of this application provide a heating temperature determining device, the device comprising:

[0032] The acquisition module is used to acquire the first reaction rate of the standard sample;

[0033] The first determining module is used to determine a temperature set based on the first reaction rate, the temperature set including multiple heating temperatures;

[0034] The processing module is used to heat the first battery sample using each of the heating temperatures to obtain the water content of the first battery sample;

[0035] The second determining module is used to determine a target heating temperature from a plurality of heating temperatures based on 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.

[0036] Thirdly, embodiments of this application provide an electronic device, including: a processor and a memory storing computer program instructions;

[0037] When the processor executes the computer program instructions, it implements the heating temperature determination method as described in the first aspect.

[0038] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer program instructions, which, when executed by a processor, implement the heating temperature determination method as described in the first aspect.

[0039] Fifthly, embodiments of this application provide a computer program product in which instructions, when executed by a processor of an electronic device, cause the electronic device to perform the heating temperature determination method as described in the first aspect.

[0040] The heating temperature determination method, apparatus, electronic device, and storage medium of this application embodiment obtain a first reaction rate of a standard sample; determine a temperature set based on the first reaction rate, the temperature set including multiple heating temperatures; heat a first battery sample using each of the heating temperatures to obtain the water content of the first battery sample; and determine a target heating temperature from the multiple heating temperatures based on the water content of the first battery sample corresponding to each heating temperature. The target heating temperature is a heating temperature set when measuring the water content of a second battery sample. In the above steps, a reasonable heating temperature can be obtained, and heating the battery sample using the target heating temperature can improve the accuracy of the water content test results. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a flowchart illustrating a heating temperature determination method provided in an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of the heating temperature determination device provided in the embodiments of this application;

[0044] Figure 3 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0045] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0047] To address the problems of the prior art, embodiments of this application provide a method, apparatus, electronic device, storage medium, and product for determining heating temperature. The method for determining heating temperature provided in this application embodiment will be described first below.

[0048] Figure 1 A schematic flowchart of a heating temperature determination method according to an embodiment of this application is shown. Figure 1 As shown, the heating temperature determination method provided in this application embodiment is applied to electronic devices, such as servers, and includes the following steps 101-104, wherein:

[0049] Step 101: Obtain the first reaction rate of the 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 is obtained. The first reaction rate can be the initial reaction rate, which is equal to the endpoint reaction rate. The first reaction rate can also be the endpoint reaction rate.

[0051] Before testing, the accuracy of the moisture content measuring equipment, such as a Karl Fischer moisture analyzer, needs to be verified. Verification is performed using a 200 ppm liquid standard sample, with electrolysis current data recorded simultaneously using a current recorder, with a tolerance of ±(5% verification point + 3) μg. Alternatively, verification is performed using a solid standard sample containing 200 μg of water, with electrolysis current data recorded simultaneously using a current recorder, with a tolerance of ±(5% verification point + 3) μg. The heating temperature of the moisture content measuring equipment, such as a cassette furnace, is verified using a temperature recorder, with a tolerance of ±3℃. The test environment is an ambient temperature of 20℃ ± 5℃ and an ambient humidity ≤85%RH. The moisture content measuring equipment includes vials, which are pre-dried in a forced-air drying oven, for example, at 100℃ for 4 hours. Based on the estimated water content of the standard sample, the sample weight containing (200~500) μg of water is calculated. Furthermore, a dew point meter is used to measure the gas dew point in the reaction vessel entering the moisture content determination equipment, obtaining the mapping relationship between gas dew point and gas volume fraction. In this mapping relationship, gas dew point and gas volume fraction correspond one-to-one. Based on the mapping relationship, the gas volume fraction corresponding to the gas dew point in the reaction vessel is determined. The gas volume fraction is then substituted into the following formula to calculate the electrolysis current, as shown below:

[0052] (1)

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

[0054] Furthermore, the starting heating temperature of the heating device can be set according to the boiling point of water (100℃), and the ending temperature can be set according to the highest heating temperature of the heating device. The heating time is 1 hour, and the heating curve of the heating device can be set. The heating curve includes multiple time points and the temperature corresponding to each time point.

[0055] Step 102: Determine a temperature set based on the first reaction rate, wherein the temperature set includes multiple heating temperatures.

[0056] In this embodiment, a temperature set is determined based on the first reaction rate of the standard sample. The temperature set includes multiple heating temperatures, each of which is different.

[0057] Step 103: Heat the first battery sample using each of the heating temperatures to obtain the water content of the first battery sample.

[0058] In this embodiment, the first battery sample is heated at each heating temperature to obtain the 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. The same heating time is used in the heating process.

[0059] Optionally, the iodine produced by electrolysis reacts with water in the sample, and the water content is calculated based on the amount of electricity consumed during electrolysis. In the electrolytic cell, the electrolysis reaction produces iodine, which undergoes a Karl Fischer reaction with water. The water content is determined using Faraday's law of electrolysis and calculated using the following formula:

[0060] (2)

[0061] Where w is the mass fraction (%) of water in the battery sample, Q is the amount of electricity consumed during electrolysis (millicoulombs), 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] Step 104: Determine a target heating temperature from among the multiple heating temperatures based on the water content of the first battery sample corresponding to each heating temperature. The target heating temperature is the heating temperature set when measuring the water content of the second battery sample.

[0063] In this embodiment, a target heating temperature is determined from multiple heating temperatures based on the water content of the first battery sample corresponding to each heating temperature. The second battery sample is heated using the target heating temperature, which is the heating temperature set when measuring the water content of the second battery sample. 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 this embodiment, the first reaction rate of the standard sample is obtained, and a temperature set is determined based on the first reaction rate. The temperature set includes multiple heating temperatures. The first battery sample is heated using each heating temperature to obtain the water content of the first battery sample. Based on the water content of the first battery sample corresponding to each heating temperature, a target heating temperature is determined from the multiple heating temperatures to obtain a reasonable heating temperature. Heating the battery sample using the target heating temperature can improve the accuracy of the water content test results.

[0065] In one embodiment of this application, the first reaction rate for obtaining the standard sample includes:

[0066] The average value of the electrolytic current or the amount of electrolysis charge of the standard sample within a first preset time period is obtained when the moisture content of the standard sample is determined.

[0067] The first reaction rate of the standard sample is determined based on the first preset duration and the average value of the electrolysis current, or the first reaction rate of the standard sample is determined based on the first preset duration and the amount of electrolysis current.

[0068] In this embodiment, the average electrolytic current or electrolytic charge over a period of time is obtained, and the reaction rate is calculated. Specifically, the average electrolytic current or electrolytic charge of the standard sample is obtained within a first preset time period when the moisture content of the standard sample is determined. The first reaction rate of the standard sample is calculated based on the first preset time period and the average electrolytic current.

[0069] (3)

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

[0071] Alternatively, the first reaction rate of the standard sample can be calculated based on the first preset time and the amount of electrolysis, specifically as follows:

[0072] (4)

[0073] Where V0 is the first reaction rate, Q is the amount of electrolysis charge, and t is the first preset time.

[0074] Optionally, the average current electrolysis value is the average current electrolysis value calculated based on multiple current electrolysis values ​​obtained by measuring current with an instrument within a first preset time period.

[0075] The reaction rate can be obtained by calculating it in the above way.

[0076] In one embodiment of this application, the first reaction rate for obtaining the standard sample includes:

[0077] During the process of determining the moisture content of the standard sample using a moisture content measuring device, the gas inlet rate, gas temperature, and gas dew point temperature of the gas entering the reaction cup from the drying gas generator are obtained at the same time. The moisture content measuring device includes the drying gas generator and the reaction cup.

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

[0079] The moisture content measuring device can be a Karl Fischer moisture analyzer, which includes a drying gas generator and a reaction vessel. During the moisture content determination of the standard sample using this device, the inlet rate of the gas from the drying gas generator entering the reaction vessel, the gas temperature, and the dew point temperature of the gas are obtained simultaneously. The first reaction rate of the standard sample is calculated based on the inlet rate, gas temperature, and dew point temperature. Specifically:

[0080] (5)

[0081] Where V0 is the first reaction rate (ug / min), V in M is the intake rate (unit: ml / min). H2O R is the molar mass of water, R is the gas constant, and T is the temperature of the gas (in °C). d This is the dew point temperature of the gas (unit: °C).

[0082] It offers multiple methods for calculating reaction rates, all of which can yield relatively accurate reaction rates.

[0083] In one embodiment of this application, determining the temperature set based on the first reaction rate includes:

[0084] The temperature corresponding to the first reaction rate is obtained from the first correspondence, which includes multiple reaction rates and the temperature corresponding to each reaction rate;

[0085] Determine the temperature range based on the temperature corresponding to the first reaction rate;

[0086] The first temperature is obtained by adding the lower boundary value of the temperature range to the preset temperature step size;

[0087] The second temperature is obtained by subtracting the upper boundary value of the temperature range from the preset temperature step size.

[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 this embodiment, a first correspondence is obtained, which includes multiple reaction rates and the temperature corresponding to each reaction rate. The first reaction rate is matched with the reaction rates in the first correspondence, and the temperature corresponding to the reaction rate matched by the first reaction rate is obtained from the first correspondence, that is, the temperature corresponding to the first reaction rate.

[0090] Based on the first curve and the heating curve corresponding to the standard sample, a first correspondence is obtained. The first curve includes multiple time points and the reaction rate corresponding to each time point, and the heating curve includes multiple time points and the temperature corresponding to each time point. From the reaction rate and the corresponding temperature at the same time point in the first curve and the heating curve, the correspondence between reaction rate and temperature is obtained.

[0091] Furthermore, the temperature corresponding to the first reaction rate is taken as the lower boundary value, and a preset value is added to the lower boundary value to obtain the upper boundary value. The lower boundary value and the upper boundary value constitute a temperature range. The preset value is determined based on the first reaction rate and a preset threshold. The absolute value of the difference between the reaction rate corresponding to any temperature in the temperature range and the first reaction rate is less than the preset threshold. The reaction rate at the lower boundary value and the reaction rate at the upper boundary value constitute a smooth segment.

[0092] The moisture content determination device includes a vial and a heating device. The heating device is located at the bottom of the vial and is used to heat the sample in the vial. Because there is a temperature distribution deviation in the vial, the temperature is adjusted based on the lower and upper boundary values ​​of the temperature range. The lower boundary value of the temperature range is added to a preset temperature step size to obtain the first temperature, which can be set to 10℃. The upper boundary value of the temperature range is subtracted from the preset temperature step size to obtain the second temperature. Furthermore, 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 set is not limited to the temperatures mentioned above; other suitable temperatures may also be included.

[0094] The temperature range corresponding to the plateau is obtained by the first reaction rate. The temperature range and the temperature obtained based on the temperature range are used as the heating temperature, and targeted heating tests are carried out on the battery samples.

[0095] In one embodiment of this application, determining the target heating temperature from a plurality of heating temperatures based on the water content of the first battery sample corresponding to each heating temperature includes:

[0096] The target water content is determined based on the water content of the first battery sample corresponding to each heating temperature.

[0097] The heating temperature corresponding to the target moisture content among the multiple heating temperatures is determined as the target heating temperature.

[0098] In this embodiment, the target water content is determined based on the water content of the first battery sample corresponding to each heating temperature. The target water content is determined based on the maximum and second maximum water content among multiple water contents. The heating temperature corresponding to the target water content among multiple heating temperatures is determined as the target heating temperature.

[0099] By determining the target moisture content from multiple moisture content sources, and then determining the target heating temperature based on the target moisture content, the moisture content and heating temperature are matched. By utilizing the inherent relationship between moisture content and temperature, the final temperature is made to better meet actual needs, which helps to improve the accuracy of subsequent moisture content test results.

[0100] In one embodiment of this application, determining the target water content based on the water content of the first battery sample corresponding to each heating temperature includes:

[0101] The water content of the first battery samples corresponding to the heating temperatures is sorted from largest to smallest, and the first and second water contents that are ranked first are selected, wherein the first water content is greater than the second water content.

[0102] Multiply the first moisture content by the preset deviation to obtain the first value;

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

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

[0105] In this embodiment, the water content of the first battery samples corresponding to multiple heating temperatures is sorted from largest to smallest, and the first and second water contents that are ranked first are selected. The first water content is the largest water content, which is greater than the second water content, and the second water content is the second largest water content after the largest water content.

[0106] The maximum water content may be artificially high due to accidental factors, and may be an outlier. In this case, the difference between the maximum water content and the second-highest water content will be significantly larger. Therefore, a deviation is preset by multiplying the first water content by the preset deviation to obtain the 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 the 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 means that the difference between the maximum water content and the second-highest water content is within a reasonable range and may be a normal fluctuation. In this case, the maximum water content is more likely to be the actual water content of the battery sample, and the first water content is taken as the target water content. If the second value is greater than the first value, i.e., 0.5% of the maximum water content, it means that the heating temperature may be too high, and a side reaction has occurred, producing additional water. The maximum water content may be an outlier. Selecting the second-highest water content can avoid this error, and the second water content is taken as the target water content.

[0107] The above screening method distinguishes between true and outlier values ​​by quantifying the difference, which not only ensures the reliability of the target moisture content but also enhances the objectivity of the method. It is suitable for experimental or industrial production scenarios that require selecting a reasonable target value from multiple moisture content data.

[0108] Figure 2 A structural diagram of the heating temperature determination device provided in an embodiment of this application is shown. Figure 2 As shown, the heating temperature determining device 200 includes:

[0109] Acquisition module 201 is used to acquire the first reaction rate of the standard sample;

[0110] The first determining module 202 is used to determine a temperature set based on the first reaction rate, the temperature set including multiple heating temperatures;

[0111] Processing module 203 is used to heat the first battery sample using each of the heating temperatures to obtain the water content of the first battery sample;

[0112] The second determining module 204 is used to determine a target heating temperature from a plurality of heating temperatures based on 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.

[0113] In one embodiment of this application, the acquisition module 201 includes a first acquisition submodule and a first determination submodule;

[0114] The first acquisition submodule is used to acquire the average value of the electrolytic current or the amount of electrolytic charge of the standard sample within a first preset time period when the moisture content of the standard sample is determined.

[0115] The first determining submodule is used to determine the first reaction rate of the standard sample based on the first preset duration and the average value of the electrolysis current, or to determine the first reaction rate of the standard sample based on the first preset duration and the electrolysis charge.

[0116] In one embodiment of this application, the acquisition module 201 includes a second acquisition submodule and a second determination submodule;

[0117] The second acquisition submodule is used to acquire, at the same time, the gas inlet rate, gas temperature and dew point temperature of the gas entering the reaction cup from the drying gas generator during the process of determining the moisture content of the standard sample using a moisture content measuring device. The moisture content measuring device includes the drying gas generator and the reaction cup.

[0118] The second determining submodule is used to determine the first reaction rate of the standard sample based on the gas inlet rate, the gas temperature, and the gas dew point temperature.

[0119] In one embodiment of this application, the first determining module 202 includes a third obtaining submodule, a third determining submodule, a calculation submodule, and an adding submodule;

[0120] The third acquisition submodule is used to acquire the temperature corresponding to the first reaction rate from the first correspondence relationship, wherein the first correspondence relationship includes multiple reaction rates and the temperature corresponding to each reaction rate;

[0121] The third determining submodule is used to determine the temperature range based on the temperature corresponding to the first reaction rate;

[0122] The calculation submodule is used to add the lower boundary value of the temperature range to a preset temperature step size to obtain a first temperature; and to subtract the upper boundary value of the temperature range from the preset temperature step size to obtain a second temperature.

[0123] A submodule is added to add the upper boundary value, the lower boundary value, the first temperature, and the second temperature as heating temperatures to the temperature set.

[0124] In one embodiment of this application, the second determining module 204 includes a fourth determining submodule and a fifth determining submodule;

[0125] The fourth determining submodule is used to determine the target water content based on the water content of the first battery sample corresponding to each heating temperature;

[0126] The fifth determining submodule is used to determine the heating temperature corresponding to the target moisture content among the multiple heating temperatures as the target heating temperature.

[0127] In one embodiment of this application, the fourth determining submodule includes a sorting subunit, a calculation subunit, and a determining subunit;

[0128] The sorting subunit is used to sort the water content of multiple first battery samples corresponding to the heating temperature from largest to smallest, and select 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.

[0129] The calculation subunit is used to multiply the first moisture content by a preset deviation to obtain a first value;

[0130] A subunit is defined for determining the target moisture content if the second value is less than or equal to the first value, wherein the second value is the difference between the first moisture content and the second moisture content; and if the second value is greater than the first value, wherein the second moisture content is taken as the target moisture content.

[0131] The heating temperature determination device provided in this application embodiment can realize all the processes implemented in the aforementioned heating temperature determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

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

[0133] The electronic device may include a processor 301 and a memory 302 storing computer program instructions.

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

[0135] Memory 302 may include mass storage for data or instructions. For example, and not limitingly, memory 302 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 302 may include removable or non-removable (or fixed) media. Where appropriate, memory 302 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 302 is non-volatile solid-state memory.

[0136] Memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, and electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to the first or second aspect of this disclosure.

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

[0138] In one example, the electronic device may also include a communication interface 303 and a bus 310. For example, Figure 3 As shown, the processor 301, memory 302, and communication interface 303 are connected through bus 310 and complete communication with each other.

[0139] The communication interface 303 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0140] Bus 310 includes hardware, software, or both, that couples components of a method or electronic device as described above together. For example, and not as a limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel 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 buses, or combinations of two or more of these. Where appropriate, bus 310 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0141] Alternatively, embodiments of this application can be implemented using a computer storage medium. This computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the heating temperature determination methods described in the above embodiments.

[0142] Alternatively, this application embodiment can provide a computer program product for implementation, wherein the instructions in the computer program product, when executed by the processor of an electronic device, cause the electronic device to implement any of the heating temperature determination methods in the above embodiments.

[0143] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described as examples. However, the method process of this application is not limited to the specific steps described. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0144] The functional blocks shown in the above-described structural diagram 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 this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0145] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this 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 a different order, or several steps can be performed simultaneously.

[0146] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0147] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for determining heating temperature, characterized in that, The method includes: Obtain the first reaction rate of the standard sample; Based on the first reaction rate, a temperature set is determined, the temperature set including multiple heating temperatures, the temperature set being determined based on a temperature range, the temperature range consisting of an upper boundary value and a lower boundary value, the reaction rate at the lower boundary value and the reaction rate at the upper boundary value forming a relatively flat segment; The first battery sample is heated using each of the aforementioned heating temperatures to obtain the water content of the first battery sample; Based on the water content of the first battery sample corresponding to each of the heating temperatures, a target heating temperature is determined from a plurality of heating temperatures. The target heating temperature is the heating temperature set when the water content of the second battery sample is measured.

2. The method for determining heating temperature according to claim 1, characterized in that, The first reaction rate for obtaining the standard sample includes: The average value of the electrolytic current or the amount of electrolytic charge of the standard sample within a first preset time period is obtained when the moisture content of the standard sample is determined. The first reaction rate of the standard sample is determined based on the first preset duration and the average value of the electrolysis current, or the first reaction rate of the standard sample is determined based on the first preset duration and the amount of electrolysis current.

3. The method for determining heating temperature according to claim 1, characterized in that, The first reaction rate for obtaining the standard sample includes: During the process of determining the moisture content of the standard sample using a moisture content measuring device, the gas inlet rate, gas temperature, and gas dew point temperature of the gas entering the reaction cup from the drying gas generator are obtained at the same time. The moisture content measuring device includes the drying gas generator and the reaction cup. The first reaction rate of the standard sample is determined based on the inlet rate, the temperature of the gas, and the dew point temperature of the gas.

4. The method for determining heating temperature according to claim 1, characterized in that, Determining the temperature set based on the first reaction rate includes: The temperature corresponding to the first reaction rate is obtained from the first correspondence, which includes multiple reaction rates and the temperature corresponding to each reaction rate. Determine the temperature range based on the temperature corresponding to the first reaction rate; The first temperature is obtained by adding the lower boundary value of the temperature range to the preset temperature step size; The second temperature is obtained by subtracting the upper boundary value of the temperature range from the preset temperature step size. 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 heating temperature according to claim 1, characterized in that, The step of determining the target heating temperature from a plurality of heating temperatures based on the water content of the first battery sample corresponding to each heating temperature includes: The target water content is determined based on the water content of the first battery sample corresponding to each heating temperature. The heating temperature corresponding to the target moisture content among the multiple heating temperatures is determined as the target heating temperature.

6. The method for determining heating temperature according to claim 5, characterized in that, The step of determining the target water content based on the water content of the first battery sample corresponding to each heating temperature includes: The water content of the first battery samples corresponding to the heating temperatures is sorted from largest to smallest, and the first and second water contents that are ranked first are selected, wherein the first water content is greater than the second water content. Multiply the first moisture content by the preset deviation to obtain the first value; If the second value is less than or equal to the first value, then the first moisture content is taken 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, then the second moisture content is taken as the target moisture content.

7. A heating temperature determining device, characterized in that, The device includes: The acquisition module is used to acquire the first reaction rate of the standard sample; The first determining module is used to determine a temperature set based on the first reaction rate. The temperature set includes multiple heating temperatures. The temperature set is determined based on a temperature range. The temperature range consists of an upper boundary value and a lower boundary value. The reaction rate at the lower boundary value and the reaction rate at the upper boundary value form a relatively flat segment. The processing module is used to heat the first battery sample using each of the heating temperatures to obtain the water content of the first battery sample; The second determining module is used to determine a target heating temperature from a plurality of heating temperatures based on 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.

8. An electronic device, characterized in that, include: Processor and memory storing computer program instructions; When the processor executes the computer program instructions, it implements the heating temperature determination method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the heating temperature determination method as described in any one of claims 1-6.

10. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device performs the heating temperature determination method as described in any one of claims 1-6.

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