KR102685360B1 - Electronic terminal device capable of estimating the soh of a battery and the operating method thereof - Google Patents

Abstract

The present invention proposes an electronic terminal device capable of estimating the SOH (State of Health) of a battery and an operation method thereof, so that a user of the electronic terminal device can easily check information about the remaining life of the battery mounted on the electronic terminal device. We can support you to do so.

Description

Electronic terminal device capable of estimating the SOH of a battery and its operating method {ELECTRONIC TERMINAL DEVICE CAPABLE OF ESTIMATING THE SOH OF A BATTERY AND THE OPERATING METHOD THEREOF}

The present invention relates to an electronic terminal device capable of estimating the State of Health (SOH) of a battery and a method of operating the same.

Recently, as electronic terminal devices that use batteries as power sources become widespread, the demand for various technologies for managing the status of batteries is increasing.

As one of these battery management technologies, the importance of technology that can predict the lifespan of a battery and guide users to replace the battery at an appropriate time is increasing.

The lifespan of the battery may vary depending on usage patterns such as temperature, number of charging and discharging, etc. If an electronic terminal device is used when the remaining life of the battery is not long, the battery may discharge quickly, and batteries such as lithium-ion batteries may be discharged quickly. For some batteries, there may be a risk of explosion due to overheating.

Therefore, research is needed on technology to properly predict the lifespan of the battery and support users to replace the battery at an appropriate time.

SOH (State of Health) is often used as a measure to represent the lifespan of these batteries. Since the internal resistance of a battery increases as it ages, a method of measuring this internal resistance to calculate SOH, a measure representing the lifespan of the battery, is widely used.

The present invention proposes an electronic terminal device capable of estimating the SOH (State of Health) of a battery and an operation method thereof, so that a user of the electronic terminal device can easily check information about the remaining life of the battery mounted on the electronic terminal device. We would like to support you.

An electronic terminal device capable of estimating the SOH (State of Health) of a battery according to an embodiment of the present invention includes a plurality of records pre-collected as reference data for SOH estimation from a plurality of batteries - the plurality of records Each of these is a data set consisting of n measurement values and SOH according to n (n is a natural number of 2 or more) types of battery state information collected from the plurality of batteries - a data storage unit where this is stored, When an SOH estimation command for a battery mounted on the electronic terminal device is applied, n first measurement values for the n types of battery state information of the battery are acquired at preset cycle intervals, and the plurality of Among the records, sampling some records containing similar measurement values based on the first measurement values, and then estimating the average of the SOH included in the sampled records as the SOH for the battery It includes a repeating estimator and an information display unit that updates and displays information on the SOH of the battery on the screen each time the SOH of the battery is estimated.

In addition, a method of operating an electronic terminal device capable of estimating the SOH of a battery according to an embodiment of the present invention includes a plurality of records pre-collected as reference data for estimating SOH from a plurality of batteries - the plurality of records Each of these is a dataset consisting of n measurement values and SOH according to n (n is a natural number of 2 or more) types of battery state information collected from the plurality of batteries - maintaining a data storage unit in which this is stored When an SOH estimation command for a battery mounted on the electronic terminal device is applied, acquiring n first measurement values for the n types of battery state information of the battery at preset cycle intervals; , among the plurality of records, some records containing similar measurement values based on the first measurement values are sampled, and then the average of the SOH included in the sampled records is estimated as the SOH for the battery. Repeating the operation and each time the SOH for the battery is estimated, updating and displaying information on the SOH for the battery on the screen.

The present invention proposes an electronic terminal device capable of estimating the SOH (State of Health) of a battery and an operation method thereof, so that a user of the electronic terminal device can easily check information about the remaining life of the battery mounted on the electronic terminal device. We can support you to do so.

Figure 1 is a diagram showing the structure of an electronic terminal device capable of estimating the SOH (State of Health) of a battery according to an embodiment of the present invention.
Figure 2 is a flowchart showing a method of operating an electronic terminal device capable of estimating the SOH of a battery according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. This description is not intended to limit the present invention to specific embodiments, but should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, are within the scope of common knowledge in the technical field to which the present invention pertains. It has the same meaning as generally understood by those who have it.

In this document, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary. Additionally, in various embodiments of the present invention, each component, functional block, or means may be composed of one or more subcomponents, and the electrical, electronic, and mechanical functions performed by each component may be electronic. It may be implemented with various known elements or mechanical elements such as circuits, integrated circuits, and ASICs (Application Specific Integrated Circuits), and may be implemented separately or by integrating two or more into one.

Meanwhile, the blocks in the attached block diagram or the steps in the flow chart are computer program instructions that are mounted on the processor or memory of equipment capable of data processing, such as general-purpose computers, special-purpose computers, portable laptop computers, and network computers, and perform designated functions. It can be interpreted to mean. Because these computer program instructions can be stored in a memory provided in a computer device or in a computer-readable memory, the functions described in the blocks of a block diagram or the steps of a flow diagram can be produced as a manufactured product containing instruction means to perform them. It could be. In addition, each block or each step may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). Additionally, it should be noted that in some alternative embodiments, it is possible for functions mentioned in blocks or steps to be executed in a different order. For example, two blocks or steps shown in succession may be performed substantially simultaneously or in reverse order, and in some cases, some blocks or steps may be omitted.

Figure 1 is a diagram showing the structure of an electronic terminal device capable of estimating the SOH (State of Health) of a battery according to an embodiment of the present invention.

Referring to FIG. 1, the electronic terminal device 110 according to the present invention includes a data storage unit 111, an estimation unit 112, and an information display unit 113.

The data storage unit 111 stores a plurality of records previously collected from a plurality of batteries as reference data for SOH estimation.

Here, each of the plurality of records refers to a data set composed of n measurement values and SOH according to n (n is a natural number of 2 or more) types of battery state information collected from the plurality of batteries. . At this time, battery state information refers to information indicating a certain state, such as battery temperature measured at a specific point in time, battery SOC (State of Charge), battery internal resistance, impedance, etc.

In this regard, when n is called '5' and five types of battery state information are called 'state information 1, 2, 3, 4, 5', the data storage unit 111 contains the data as shown in Table 1 below. Multiple records may be stored.

multiple records Measured value for status information 1 Measurement values for state information 2 Measured value for status information 3 Measurement values for state information 4 Measured value for status information 5 SOH record 1 A1 B1 C1 D1 E1 SOH1 record 2 A2 B2 C2 D2 E2 SOH2 record 3 A3 B3 C3 D3 E3 SOH3 record 4 A4 B4 C4 D4 E4 SOH4 record 5 A5 B5 C5 D5 E5 SOH5 record 6 A6 B6 C6 D6 E6 SOH6 ... ... ... ... ... ... ...

The records shown in Table 1 above are data collected and configured in advance by the administrator, and are reference data to be used when performing SOH estimation for the battery mounted on the actual electronic terminal device 110 in the future.

When an SOH estimation command for a battery mounted on the electronic terminal device 110 is applied, the estimation unit 112 generates n first information about the n types of battery state information of the battery at preset cycle intervals. After obtaining measurement values and sampling some records that contain similar measurement values based on the first measurement values among the plurality of records, the average of the SOH included in the sampled records is calculated from the battery. Repeat the operation of estimating the SOH for .

For example, if the period is '10 seconds' and the n types of battery state information are 'state information 1, 2, 3, 4, 5', the estimator 112 is the electronic terminal device 110 When the SOH estimation command for the battery mounted on is applied, at intervals of '10 seconds', the five first measurement values for 'state information 1, 2, 3, 4, 5' of the battery are respectively 'A _R' , B _R , C _R , _DR , E _R ', and among the plurality of records stored in the data storage unit 111 as shown in Table 1, the first measurement values 'A _R , After sampling some records containing similar measurement values based on B _R , C _R , D _R , and E _R ', the average of the SOH included in the sampled records is estimated as the SOH for the battery. The movement can be repeated.

At this time, according to one embodiment of the present invention, the estimation unit 112 may include a correction unit 114 and a processing unit 115.

When it is assumed that SOH estimation for the battery is performed in a t cycle, which is a cycle (t is a natural number), the correction unit 114 obtains the first measurement values for the battery in the t cycle. Then, correction is performed on the first measurement values in the t-th period by applying a Kalman Filter to the first measurement values in the t-th period.

At this time, according to an embodiment of the present invention, the correction unit 114 calculates the error covariance and Kalman gain based on the first measurement values that have been corrected as the Kalman filter is applied in the t-1th period. Then, based on the calculated error covariance and Kalman gain, correction is performed on the first measurement values in the t-th period by applying the Kalman filter to the first measurement values in the t-th period. You can.

Here, the Kalman filter refers to a recursive filter that estimates the state of a linear dynamical system based on measurement data containing noise. Relatedly, in the case where an operation of estimating the SOH for the battery is performed in the 3rd cycle, the correction unit 114 acquires the first measurement values for the battery in the 3rd cycle, and then By applying a Kalman filter to the first measurement values in the th cycle, correction can be performed on the first measurement values in the third cycle.

At this time, in order to apply the Kalman filter to the first measurement values in the third cycle, the correction unit 114 can use the first measurement values for which correction has been completed by applying the Kalman filter in the second cycle, which is the previous cycle. there is.

Specifically, the correction unit 114 calculates the error covariance and Kalman gain based on the first measurement values that have been corrected as the Kalman filter is applied in the second cycle, and then calculates the error covariance and Kalman gain. As a basis, correction for the first measurement values in the third period can be performed by applying the Kalman filter to the first measurement values in the third period.

In this way, in each cycle, the correction unit 114 calculates the error covariance and Kalman gain based on the first measurement values for which error correction was completed in the previous cycle, and then calculates the Kalman gain for the first measurement values collected in the cycle. By performing filter application, error correction can be performed on the first measurement values in the corresponding period.

When correction of the first measurement values in the t-th cycle is completed, the processing unit 115 generates a Markov chain among the plurality of records based on the first measurement values for which correction in the t-th cycle has been completed. According to the Monte Carlo (Markov Chain Monte Carlo: MCMC) sampling technique, some records are sampled, and then the average of the SOH included in the sampled records is estimated as the SOH for the battery in the t-th cycle.

At this time, according to one embodiment of the present invention, the processing unit 115 designates the distribution of SOH included in the records sampled in the t-1th cycle as a target distribution, and then performs correction in the tth cycle. Based on the completed first measurement values, some records among the plurality of records may be sampled so that a distribution matching the target distribution is calculated according to the MCMC sampling technique.

Here, MCMC sampling is an algorithm for extracting samples with a static distribution of a desired distribution from a probability distribution based on the configuration of a Markov chain, and refers to an algorithm for extracting samples matching a predetermined target distribution from a predetermined population.

In this regard, in the case where an operation of estimating the SOH for the battery is performed in the third cycle, the first measurement values in the third cycle are corrected through a Kalman filter through the correction unit 114. When this is completed, the processing unit 115 selects some of the plurality of records stored in the data storage unit 111 according to the MCMC sampling technique, based on the first measurement values for which correction in the third cycle has been completed. Records can be sampled.

Specifically, as MCMC sampling is performed in the second cycle, the processing unit 115 specifies the SOH distribution of the sampled records as the target distribution for performing MCMC sampling in the third cycle, and then selects the SOH distribution for MCMC sampling in the third cycle after correction is completed in the third cycle. Based on the first measurement values, some records among the plurality of records stored in the data storage unit 111 may be sampled to calculate a distribution matching the target distribution according to the MCMC sampling technique. .

In this way, when record sampling in the third cycle is completed, the processing unit 115 can estimate the average of the SOH included in the sampled records as the SOH for the battery in the third cycle.

In this way, in each cycle, the processing unit 115 designates the records sampled in the previous cycle as the target distribution and then calculates a distribution matching the target distribution based on the first measurement values collected in the cycle. After MCMC sampling some of the plurality of records, the average of the SOH included in the sampled records can be estimated as the SOH for the battery in the corresponding cycle.

At this time, according to one embodiment of the present invention, the estimation unit 112 repeats the operation of estimating the SOH for the battery at the cycle interval, but in one cycle, the number of records to be sampled reaches a preset number. Alternatively, when a steady state is reached in which the types of records being sampled do not change, the repetitive operation for estimating SOH can be stopped.

That is, the estimation unit 112 repeats the operation of estimating the SOH for each cycle, and then the number of records sampled through the processing unit 115 reaches a preset number or matches the type of record sampled in the previous cycle. If it is confirmed that a steady state has been reached, the iterative operation for estimating SOH can be stopped.

The information display unit 113 updates and displays information on the SOH of the battery on the screen whenever the SOH of the battery is estimated for each cycle through the estimation unit 112.

Through this, the user of the electronic terminal device 110 can easily determine the remaining lifespan of the battery mounted on the electronic terminal device 110.

According to one embodiment of the present invention, the electronic terminal device 110 may further include a management unit 116.

If a situation occurs in which the SOH for the battery is estimated to be less than a preset first standard value, the management unit 116 generates a recommendation message recommending battery replacement and displays it on the screen, and the SOH for the battery is preset. If a situation occurs that is estimated to be below the second reference value (the second reference value is lower than the first reference value), after the recommendation message is displayed on the screen, a preset time has elapsed from the time the recommendation message is displayed. When this happens, the power of the electronic terminal device 110 is forcibly turned off.

For example, when the first reference value is '80%', the second reference value is '70%', and the preset time is '5 minutes', the management unit 116 determines that the SOH for the battery is less than '80%'. When an estimated situation occurs, an advisory message recommending battery replacement can be generated and displayed on the screen, and when a situation occurs where the SOH for the battery is estimated to be less than '70%', the advisory message is displayed. After being displayed on the screen, when '5 minutes' have elapsed from the time the recommendation message was displayed, the power of the electronic terminal device 110 may be forcibly turned off.

Through this, it is possible to prevent dangerous situations such as explosions due to aging of the battery mounted on the electronic terminal device 110.

Additionally, according to an embodiment of the present invention, the electronic terminal device 110 may further include a history transmission unit 117.

When an upload command instructing to upload the SOH estimation history information for the battery to the preset history management server 10 is applied, the history transmission unit 117 provides date and time information for when the upload command was approved. , and generate SOH estimation history information consisting of the SOH for the battery last estimated based on the time when the upload command was applied and terminal-specific information of the electronic terminal device 110, and generate the generated SOH estimation history information. It is transmitted to the history management server (10). Here, terminal-specific information refers to device-specific information such as MAC address or IMEI assigned to the electronic terminal device 110.

For example, it is assumed that the upload command was approved by the user on the electronic terminal device 110 at 'May 26, 2023, 13:25:22', and the last estimated SOH based on that time is 'SOH'. In the case of _E ', the history transmission unit 117 records 'May 26, 2023 13:25:22', 'SOH _E ', and terminal-specific information such as the MAC address or IMEI of the electronic terminal device 110. SOH estimation history information consisting of information can be generated and transmitted to the history management server 10.

Through this, an operator who provides a solution such as the present invention that allows estimating the SOH of an electronic terminal device can, based on the SOH estimation history information collected in the history management server 10, each electronic device using the solution of the present invention. It becomes possible to integrate and manage SOH information of terminal devices.

Figure 2 is a flowchart showing a method of operating an electronic terminal device capable of estimating the SOH of a battery according to an embodiment of the present invention.

In step S210, a plurality of records are collected in advance as reference data for SOH estimation from a plurality of batteries (each of the plurality of records is collected from the plurality of batteries, n (n is a natural value of 2 or more) It maintains a data storage unit in which a data set consisting of n measurement values and SOH according to various types of battery status information is stored.

In step S220, when an SOH estimation command for the battery mounted on the electronic terminal device is applied, n first measurement values for the n types of battery state information of the battery are measured at preset cycle intervals. After obtaining and sampling some records containing similar measurement values based on the first measurement values among the plurality of records, the average of the SOH included in the sampled records is calculated as the SOH for the battery. Repeat the estimation operation.

In step S230, each time the SOH for the battery is estimated, the SOH information for the battery is updated and displayed on the screen.

At this time, according to an embodiment of the present invention, in step S220, if SOH estimation for the battery is performed in a t cycle (t is a natural number), the battery in the t cycle After obtaining the first measurement values for, performing correction on the first measurement values in the t-th period by applying a Kalman filter to the first measurement values in the t-th period, and When correction of the first measurement values in the t-th period is completed, based on the first measurement values for which correction in the t-th period was completed, among the plurality of records, according to the MCMC sampling technique, some After sampling the records, the method may include estimating an average of the SOH included in the sampled records as the SOH for the battery in the t-th cycle.

At this time, according to one embodiment of the present invention, the step of performing the correction is to calculate the error covariance and Kalman gain based on the first measurement values for which correction has been completed as the Kalman filter is applied in the t-1th period. Then, based on the calculated error covariance and Kalman gain, correction is performed on the first measurement values in the tth period by applying the Kalman filter to the first measurement values in the tth period. In the estimating step, the distribution of SOH included in the records sampled in the t-1th cycle is designated as the target distribution, and then MCMC is calculated based on the first measurement values for which corrections have been completed in the tth cycle. According to a sampling technique, some records among the plurality of records may be sampled so that a distribution matching the target distribution is calculated.

At this time, according to one embodiment of the present invention, in step S220, when the number of records to be sampled reaches a preset number in one cycle or the type of records to be sampled reaches a steady state where the type does not change, SOH The repetitive operation for estimation can be stopped.

In addition, according to an embodiment of the present invention, the method of operating the electronic terminal device generates a recommendation message recommending battery replacement when a situation occurs in which the SOH for the battery is estimated to be less than a preset first standard value. displayed on the screen, and when a situation occurs in which the SOH for the battery is estimated to be below a preset second standard value (the second standard value is lower than the first standard value), the advisory message is displayed on the screen. Afterwards, when a preset time elapses from the time the recommendation message is displayed, the step of forcibly turning off the power of the electronic terminal device may be further included.

In addition, according to one embodiment of the present invention, the method of operating the electronic terminal device includes, when an upload command instructing to upload the SOH estimation history information for the battery to a preset history management server is applied, the upload command By generating SOH estimation history information consisting of date and time information for the approved time, SOH for the battery last estimated based on the time when the upload command was approved, and terminal-specific information of the electronic terminal device, , It may further include transmitting the generated SOH estimation history information to the history management server.

Above, a method of operating an electronic terminal device according to an embodiment of the present invention has been described with reference to FIG. 2. Here, the operation method of the electronic terminal device according to an embodiment of the present invention may correspond to the configuration of the operation of the electronic terminal device 110 described using FIG. 1, so a more detailed description thereof will be omitted. .

The method of operating an electronic terminal device according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium to be executed through combination with a computer.

Additionally, the method of operating an electronic terminal device according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

As described above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , those skilled in the art can make various modifications and variations from this description.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described later as well as all things that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

110: Electronic terminal device
111: data storage unit 112: estimation unit
113: information display unit 114: correction unit
115: processing department 116: management department

Claims (14)

In an electronic terminal device capable of estimating the SOH (State of Health) of a battery,
A plurality of records pre-collected as reference data for SOH estimation from a plurality of batteries - each of the plurality of records contains n (n is a natural number of 2 or more) types collected from the plurality of batteries. A data set consisting of n measurement values and SOH according to battery status information - a data storage unit where this is stored;
When an SOH estimation command for a battery mounted on the electronic terminal device is applied, n first measurement values for the n types of battery state information of the battery are acquired at preset cycle intervals, and the plurality of Among the records, sampling some records containing similar measurement values based on the first measurement values, and then estimating the average of the SOH included in the sampled records as the SOH for the battery repeating estimation unit;
An information display unit that updates and displays information on the SOH of the battery on the screen each time the SOH of the battery is estimated;
If a situation occurs in which the SOH for the battery is estimated to be less than a preset first reference value, a recommendation message recommending battery replacement is generated and displayed on the screen, and the SOH for the battery is a preset second reference value - the above The second reference value is a value lower than the first reference value - if a situation that is estimated to be below occurs, after the recommendation message is displayed on the screen, and a preset time elapses from the time the recommendation message is displayed, the electronic a management unit that forcibly turns off the power of the terminal device; and
When an upload command instructing to upload SOH estimation history information for the battery to a preset history management server is applied, date and time information about the time when the upload command was approved and the time when the upload command was approved are stored. A history transmission unit that generates SOH estimation history information consisting of the last estimated SOH for the battery as a reference and terminal-specific information of the electronic terminal device, and transmits the generated SOH estimation history information to the history management server.
Including,
The estimation part is
If SOH estimation for the battery is performed in a t cycle (t is a natural number), after obtaining the first measurement values for the battery in the t cycle, t-1 th cycle As the Kalman Filter is applied in the cycle, the error covariance and Kalman gain are calculated based on the corrected first measurement values, and based on the calculated error covariance and Kalman gain, the error covariance and Kalman gain are calculated in the tth cycle. a correction unit that performs correction on the first measurement values in the t-th period by applying the Kalman filter to the first measurement values; and
When correction of the first measurement values in the t-th cycle is completed, the distribution of SOH included in the records sampled in the t-1 th cycle is designated as a target distribution, and then in the t-th cycle Based on the first measurement values for which correction has been completed, among the plurality of records, some records are calculated so that a distribution matching the target distribution is calculated according to a Markov Chain Monte Carlo (MCMC) sampling technique. After sampling the records, a processing unit that estimates the average of the SOH included in the sampled records as the SOH for the battery in the tth cycle.
Includes,
The estimation part is
In one cycle, when the number of records to be sampled reaches a preset number or a steady state is reached where the type of records to be sampled does not change, the repetitive operation for estimating SOH is stopped. electronic terminal device. delete delete delete delete delete In a method of operating an electronic terminal device capable of estimating the SOH (State of Health) of a battery,
A plurality of records pre-collected as reference data for SOH estimation from a plurality of batteries - each of the plurality of records contains n (n is a natural number of 2 or more) types collected from the plurality of batteries. A data set consisting of n measurement values and SOH according to battery status information - maintaining a data storage unit in which this is stored;
When an SOH estimation command for a battery mounted on the electronic terminal device is applied, n first measurement values for the n types of battery state information of the battery are acquired at preset cycle intervals, and the plurality of Among the records, sampling some records containing similar measurement values based on the first measurement values, and then estimating the average of the SOH included in the sampled records as the SOH for the battery repeating steps;
Each time the SOH for the battery is estimated, updating and displaying information on the SOH for the battery on the screen;
If a situation occurs in which the SOH for the battery is estimated to be less than a preset first reference value, a recommendation message recommending battery replacement is generated and displayed on the screen, and the SOH for the battery is a preset second reference value - the above The second reference value is a value lower than the first reference value - if a situation that is estimated to be below occurs, after the recommendation message is displayed on the screen, and a preset time elapses from the time the recommendation message is displayed, the electronic Forcibly turning off the power of the terminal device; and
When an upload command instructing to upload SOH estimation history information for the battery to a preset history management server is applied, date and time information about the time when the upload command was approved and the time when the upload command was approved are stored. Generating SOH estimation history information consisting of the last estimated SOH for the battery as a reference and terminal-specific information of the electronic terminal device, and transmitting the generated SOH estimation history information to the history management server.
Including,
The repeating steps above are
If SOH estimation for the battery is performed in a t cycle (t is a natural number), after obtaining the first measurement values for the battery in the t cycle, t-1 th cycle As the Kalman Filter is applied in the cycle, the error covariance and Kalman gain are calculated based on the corrected first measurement values, and based on the calculated error covariance and Kalman gain, the error covariance and Kalman gain are calculated in the tth cycle. performing correction on the first measurement values in the tth period by applying the Kalman filter to the first measurement values; and
When correction of the first measurement values in the t-th cycle is completed, the distribution of SOH included in the records sampled in the t-1 th cycle is designated as a target distribution, and then in the t-th cycle Based on the first measurement values for which correction has been completed, among the plurality of records, some records are calculated so that a distribution matching the target distribution is calculated according to a Markov Chain Monte Carlo (MCMC) sampling technique. After sampling the records, estimating the average of the SOH included in the sampled records as the SOH for the battery in the tth cycle.
Includes,
The repeating steps above are
In one cycle, when the number of records to be sampled reaches a preset number or a steady state is reached where the type of records to be sampled does not change, the repetitive operation for estimating SOH is stopped. A method of operating an electronic terminal device. delete delete delete delete delete A computer-readable recording medium recording a computer program for executing the method of claim 7 through combination with a computer. A computer program stored in a storage medium for executing the method of claim 7 through combination with a computer.

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