JP2021125936A - Electronic apparatus and method for estimating secondary battery residual amount of the same - Google Patents

Abstract

To provide an electronic apparatus and a method for estimating secondary battery residual amount of the same, enabling the accurate residual amount estimation of a secondary battery regardless of a secondary battery consumption current at voltage measurement.SOLUTION: In a DAISY reproduction device 100, an operation control unit 40 performs the processing of: controlling a current value measuring unit 50 and a voltage value measuring unit 60 to measure a current and a terminal voltage of a secondary battery 10 to store a measured current value MEI and a measured terminal voltage value MEE into a storage unit 20; calculating power MEW at measurement which is the power consumption of the DAISY reproduction device 100; extracting a correction voltage value MEV corresponding to the power MEW at measurement from a correction voltage value table MET stored in the storage unit 20; adding the correction voltage value MEV to the measured terminal voltage value MEE to calculate a corrected terminal voltage value MTE; extracting a residual amount RM of the secondary battery 10 corresponding to the corrected terminal voltage value MTE from a residual amount table RMT stored in the storage unit 20; and outputting the extracted residual amount RM from an output unit 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to an electronic device and a method for estimating the remaining battery level in an electronic device.

A function that notifies the user of the usable time of an electronic device by outputting the remaining amount of the secondary battery to the output unit in an electronic device that is operated by a secondary battery and is used for playing music or video content. There is. As a method for estimating the remaining amount of the secondary battery in such an electronic device, for example, a method disclosed in Patent Document 1 (Japanese Unexamined Patent Publication No. 2016-36215) is known.

Japanese Unexamined Patent Publication No. 2016-36215 (paragraphs 0021-0025 of the specification, FIG. 3, etc.)

In Patent Document 1, a table for displaying the remaining amount of the remaining amount of the secondary battery is prepared in advance according to the range of the voltage value in the secondary battery, and the voltage value of the secondary battery measured by the control unit is prepared. A configuration is disclosed in which the remaining amount display contents according to the above are selected from the remaining amount display table and displayed. However, since the voltage value of the secondary battery fluctuates depending on the current consumption of the electronic device, referring to the remaining amount display table based on the voltage value of the secondary battery in the electronic device in use, the accurate balance of the secondary battery remains. There is a problem that the amount cannot be estimated.

Therefore, the present invention corrects the measurement terminal voltage value of the secondary battery according to the power consumption of the electronic device, thereby accurately estimating the remaining amount of the secondary battery regardless of the current consumption during voltage measurement of the secondary battery. The purpose is to provide an electronic device that enables the above, and a method for estimating the remaining battery level in the electronic device.

In order to solve the above problems, the inventor came up with the following configuration. That is, the present invention is an electronic device that outputs data to an output unit by supplying power from a secondary battery, a current value measuring unit that measures the current value of the current flowing through the secondary battery, and a current value measuring unit that measures the current value. The correction voltage value is associated with the voltage value measuring unit that measures the terminal voltage value of the secondary battery in the above, and the measured current value measured at the time of measuring the current value and the measured power calculated from the measured terminal voltage value. The corrected correction voltage value table and the remaining amount table associated with the remaining amount of the secondary battery corresponding to the corrected terminal voltage value obtained by adding the correction voltage value to the measurement terminal voltage value are stored. The storage unit includes the output unit, the current value measurement unit, the voltage value measurement unit, and an operation control unit that controls the operation of the storage unit. The operation control unit includes the measured current value and the operation control unit. The measurement terminal voltage value and the measurement power are stored in the storage unit while calculating the measurement power from the product of the measurement terminal voltage values, and from the correction voltage value table based on the measurement power. Based on the process of extracting the correction voltage value, the process of adding the correction voltage value to the terminal voltage value stored in the storage unit to calculate the corrected terminal voltage value, and the process of calculating the corrected terminal voltage value. The electronic device is characterized in that the remaining amount of the secondary battery is extracted from the remaining amount table and the remaining amount of the secondary battery is output from the output unit.

As a result, the measurement terminal voltage value of the secondary battery is corrected to a value that excludes the influence of the current consumption of the electronic device by using the correction voltage value according to the power consumption, so that the balance of the secondary battery of the electronic device is accurately corrected. Quantitative estimation can be done.

Further, the operation control unit further includes a trigger button for starting the measurement of the current value by the current value measurement unit, and the operation control unit further includes the current value when the user operates the trigger button. It is preferable to have the measuring unit measure the current value.

As a result, the measurement terminal voltage value of the secondary battery is corrected to a value that excludes the influence of the current consumption of the electronic device by using the correction voltage value according to the power consumption at the time of measurement, so that the secondary of the electronic device is accurate. It is possible to estimate the remaining battery level.

Further, it is preferable that the process of outputting the remaining amount of the secondary battery from the output unit is executed by interrupting the output content of the data being output by the output unit.

As a result, the user can be notified of the remaining amount of the secondary battery even when the output unit is outputting data.

Another invention is a method for estimating the remaining amount of a secondary battery in an electronic device that outputs data to an output unit by supplying power from the secondary battery, wherein the operation control unit determines the current flowing through the secondary battery. The process of having the current value measuring unit measure the current value and storing it as the measured current value in the storage unit, and the operation control unit causing the voltage value measuring unit to measure the terminal voltage value of the secondary battery and the storage unit. A step of storing as a measurement terminal voltage value, and a step of the operation control unit calculating the measurement power from the product of the measurement current value and the measurement terminal voltage value and storing the measurement power in the storage unit. The step of extracting the correction voltage value corresponding to the measurement power from the correction voltage value table which is stored in advance in the storage unit and the correction voltage value is associated with the measurement power. The operation control unit adds the correction voltage value to the measurement terminal voltage value stored in the storage unit to calculate the corrected terminal voltage value, and stores the corrected terminal voltage value in the storage unit. The step of causing the operation and the operation control unit are stored in advance in the storage unit, and the remaining amount table associated with the remaining amount of the secondary battery corresponding to the corrected terminal voltage value is converted to the corrected terminal voltage value. Based on the step of extracting the remaining amount of the corresponding secondary battery and the remaining amount of the secondary battery extracted from the remaining amount table by the operation control unit, the remaining amount of the secondary battery is supplied to the output unit. This is a method for estimating the remaining amount of a secondary battery in an electronic device, which comprises a step of outputting a battery.

As a result, the measurement terminal voltage value of the secondary battery is corrected to a value that excludes the influence of the current consumption of the electronic device by using the correction voltage value according to the power consumption, so that the balance of the secondary battery of the electronic device is accurately corrected. Quantitative estimation can be done.

Further, it is preferable that the motion control unit executes each step after the user operates the trigger button.

As a result, the measurement terminal voltage value of the secondary battery is corrected to a value that eliminates the influence of the current consumption of the electronic device by using the correction voltage value according to the power consumption at the time of measurement, so that the secondary of the electronic device is accurate. It is possible to estimate the remaining battery level.

Further, in the step of outputting the remaining amount of the secondary battery to the output unit, it is preferable to interrupt the output content of the data being output to the output unit.

As a result, the user can be notified of the remaining amount of the secondary battery even when the output unit is outputting data.

According to the configuration of the electronic device and the secondary battery remaining amount estimation method of the electronic device in the present invention, the measurement terminal voltage value of the secondary battery is affected by the current consumption of the electronic device by using the correction voltage value according to the power consumption. Since it is corrected to the excluded value, the remaining amount of the secondary battery of the electronic device can be accurately estimated without being affected by the current consumption.

It is a schematic block diagram of the DAISY reproduction apparatus (electronic device) in this embodiment. It is explanatory drawing which shows the content of the correction voltage value table in this embodiment. It is explanatory drawing which shows the content of the remaining amount table in this embodiment. It is a schematic flow chart in the secondary battery remaining amount estimation method of the electronic device in this embodiment.

In the present embodiment, as an example of an electronic device, a DAISY playback device 100 capable of reproducing digital talking book data according to the DAISY (Digital Accessible Information SYSTEM) standard will be described. However, the electronic device in the technical scope of the present invention is not limited to the DAISY playback device 100. As shown in FIG. 1, the DAISY playback device 100 in the present embodiment includes a secondary battery 10, a storage unit 20, an output unit 30, an operation control unit 40, a current value measurement unit 50, and a voltage value measurement unit 60. , These are housed or mounted in the housing 70. The housing 70 is provided with operation buttons 80 for operating the DAISY playback device 100 in a predetermined layout.

The secondary battery 10 supplies power to the DAISY playback device 100. The power supply to the DAISY playback device 100 is not limited to the secondary battery 10, but the supply from a commercial power source can also be used in combination. A nickel-metal hydride battery is used as the secondary battery 10 in the present embodiment, but other known products such as a lithium ion battery, a rechargeable alkaline battery, and a Nikkado battery are used as the secondary battery 10. It can also be adopted.

A non-volatile flash memory is adopted for the storage unit 20 in the present embodiment, but a configuration using a disk-type recording medium can also be adopted. The storage unit 20 in the present embodiment stores in advance an operation control program PGM, a content CON represented by digital talking book data, a correction voltage value table MET, and a remaining amount table RMT. Further, the storage unit 20 can store the measured current value MEI and the measurement terminal voltage value MEE measured by the current value measuring unit 50 and the voltage value measuring unit 60 at the time of the remaining amount estimation operation of the secondary battery 10.

A speaker (audio output unit) is adopted as the output unit 30 in this embodiment. From the output unit 30, the sound of the content CON reproduced by the operation control unit 40 is output. The output unit 30 can also be configured by a plurality of speakers.

The operation control unit 40 in the present embodiment is composed of a calculation means 42 represented by a CPU and an operation control program PGM stored in the storage unit 20. When the user operates the operation button 80 provided on the outer surface of the housing 70 at an arbitrary timing, the operation control program PGM is activated, and the arithmetic means 42 operates each of the DAISY playback devices 100 according to the processing flow of the operation control program PGM. Controls the operation of the configuration. In particular, when the remaining amount estimation button (not shown) of the operation buttons 80 is operated, the secondary battery remaining amount estimation program PGM2 in the operation control program PGM is activated, and the calculation means 42 of the secondary battery remaining amount estimation program PGM2 The remaining amount of the secondary battery 10 is estimated based on the processing flow.

The current value measuring unit 50 measures the current value in the secondary battery 10. The current value measured by the current value measuring unit 50 is stored in the storage unit 20 as the measured current value MEI by the operation control unit 40. Further, the voltage value measuring unit 60 measures the terminal voltage of the secondary battery 10. The terminal voltage value measured by the voltage value measuring unit 60 is stored in the storage unit 20 as the measured terminal voltage value MEE by the operation control unit 40. The operation of both the current value measuring unit 50 and the voltage value measuring unit 60 is controlled by the operation control unit 40. When the user operates the remaining amount estimation button (not shown) among the operation buttons 80 of the housing 70, the operation control unit 40 operates the current value measurement unit 50 and the voltage value measurement unit 60, and also causes the storage unit 20 to operate. The measured current value MEI and the measurement terminal voltage value MEE are stored.

FIG. 2 is an explanatory diagram showing the contents of the correction voltage value table MET in the present embodiment. The correction voltage value table MET is associated with the measurement power MEW, which is the product of the measurement current value MEI and the measurement terminal voltage value MEE, and the correction voltage value MEV corresponding to the measurement power MEW. In the correction voltage value table MET in the present embodiment, the lower limit value of the correction voltage value MEV is 0.000V when the measured power MEW is less than the preset minimum power. Further, in the correction voltage value table MET in the present embodiment, the upper limit value of the correction voltage value MEV is 0.090V when the measured power MEW is equal to or higher than the preset maximum power. Further, in the range where the measured power MEW is equal to or more than the minimum power and less than the maximum power, the correction voltage value MEV is set for each predetermined power consumption range. In such a correction voltage value table MET, the relationship between the terminal voltage value in the standby state (when the power consumption is the minimum) and the terminal voltage value in the predetermined power consumption is determined in advance in the secondary battery 10 by experiments or the like. Is used.

FIG. 3 is an explanatory diagram showing the contents of the remaining amount table RMT in the present embodiment. The remaining amount table RMT is associated with the remaining amount RM of the secondary battery 10 with respect to the corrected terminal voltage value MTE. The corrected terminal voltage value MTE will be described later. The remaining amount table RMT in the present embodiment divides the remaining amount range from 100% to 0% of the remaining amount RM of the secondary battery 10 at 10% intervals, and is a numerical value of the correction voltage value MEV for each remaining amount range. Is specified. In such a remaining amount table RMT, a numerical value obtained in advance by an experiment or the like is used for the relationship between the terminal voltage value of the secondary battery 10 and the remaining amount RM when the DAISY playback device 100 is put into the standby state.

Next, a method for estimating the remaining amount of the secondary battery will be described. FIG. 4 is a schematic flow chart of the method for estimating the remaining amount of the secondary battery in the present embodiment. As described above, when the user operates the remaining amount estimation button (S-1), which is a trigger button, the secondary battery remaining amount estimation program PGM2 is activated (S-2) and the secondary battery remaining amount estimation flow is started. It will be started. Specifically, the calculation means 42 causes the current value measuring unit 50 to measure the current value of the current flowing through the secondary battery 10 when the start button is operated (when estimating the remaining amount) to acquire the measured current value MEI and the storage unit. The process of storing the measured current value MEI in 20 (S-3) is executed.

Further, the calculation means 42 causes the voltage value measuring unit 60 to measure the terminal voltage of the secondary battery 10 when the start button is operated to acquire the measurement terminal voltage value MEE, and causes the storage unit 20 to store the measurement terminal voltage value MEE. (S-4) The process is executed. Although the processing flow in which the calculation means 42 operates the current value measuring unit 50 before the voltage value measuring unit 60 is described here, the present invention is not limited to this mode. The calculation means 42 can operate the voltage value measuring unit 60 in advance of the current value measuring unit 50, or can operate the current value measuring unit 50 and the voltage value measuring unit 60 at the same time.

Subsequently, the calculation means 42 calculates the measured power MEW from the product of the measured current value MEI stored in the storage unit 20 and the measurement terminal voltage value MEE, and stores the calculated measured power MEW in the storage unit 20. (S-5) The process is executed.

Next, the calculation means 42 refers to the correction voltage value table MET stored in the storage unit 20 and extracts the correction voltage value MEV corresponding to the previously calculated measured power MEW (S-6). Subsequently, the calculation means 42 adds the correction voltage value MEV to the measurement terminal voltage value MEE stored in the storage unit 20 to calculate the corrected terminal voltage value MTE, and stores the calculated corrected terminal voltage value MTE in the storage unit. The process of storing (S-7) in 20 is executed.

Next, the calculation means 42 refers to the remaining amount table RMT stored in the storage unit 20 and extracts the remaining amount RM of the secondary battery 10 corresponding to the previously calculated corrected terminal voltage value MTE (S-8). )do. Then, the calculation means 42 outputs the estimated remaining amount of the secondary battery 10 from the output unit 30 based on the remaining amount RM of the secondary battery 10 extracted from the remaining amount table RMT stored in the storage unit 20 (S-). 9) Execute the process to be made.

Here, in the present embodiment, since the speaker is used as the output unit 30, the output of the estimated remaining amount of the secondary battery 10 is also performed by voice. If audio has already been output from the output unit 30 when the estimated remaining amount of the secondary battery 10 is output, the calculation means 42 interrupts the output content of the audio being output and the estimated remaining amount of the secondary battery 10. It is also possible to have the output unit 30 output the amount. Further, the calculation means 42 suspends the output of the content CON from the output unit 30, causes the output unit 30 to output the estimated remaining amount of the secondary battery 10 for a predetermined time, and then suspends the content. The CON may be re-output to the output unit 30.

Although the present invention has been described based on the present embodiment described above, the technical scope of the present invention is not limited to the present embodiment. For example, the operation control unit 40 starts measuring the current value and the terminal voltage value by the current value measuring unit 50 and the voltage value measuring unit 60 after the operation button 80 is operated by the user, and estimates the remaining amount of the secondary battery 10. Although the configuration to be started is described, the present invention is not limited to this configuration. For example, although a speaker is used as the output unit 30 in the above embodiment, a display monitor or the like may be used for the output unit 30 in addition to the speaker. The output of the remaining RM of the secondary battery 10 when the display monitor is adopted as the output unit 30 is the time required after the user operates the operation button 80 as the trigger button provided on the housing 70. Only can be displayed on the display monitor.

Further, the calculation means 42 interrupts the output content of the content CON already displayed on the display monitor when the user operates the operation button 80 provided on the housing 70, so that the balance of the secondary battery 10 remains. The quantity RM can also be displayed. Further, the calculation means 42 suspends the content CON output to the display monitor, outputs the remaining RM of the secondary battery 10 to the output unit 30 for a predetermined time, and then pauses the content CON. The output unit 30 may re-output.

Further, the operation control unit 40 always measures the current and the terminal voltage of the secondary battery 10 by the current value measuring unit 50 and the voltage value measuring unit 60 regardless of whether or not the operation button 80 as the trigger button is operated by the user. You can also let it. The operation after the current and terminal voltage measurement processing of the secondary battery 10 by the current value measuring unit 50 and the voltage value measuring unit 60 can be performed in the same manner as in the above embodiment.

Further, in the present embodiment, the mode in which the content CON is stored in the storage unit 20 is described, but a mode in which the DAISY playback device 100 is read via an independent recording medium in which the content CON is stored is adopted. You can also do it. That is, it is also possible to adopt a form in which the DAISY playback device 100 is provided with an independent recording medium access means.

Further, in the present embodiment, a mode in which the measured current value MEI, the measured terminal voltage value MEE, the measured power MEW, and the corrected terminal voltage value MTE are stored in the storage unit 20 is described. It can also be stored in a volatile memory as an independently provided sub-storage unit.

Further, it is also possible to adopt a modified example described in the specification or a form in which other known configurations are appropriately combined with respect to the configuration of the present embodiment described above.

10 Secondary battery 20 Storage unit 30 Output unit 40 Operation control unit 42 Calculation means 50 Current value measurement unit 60 Voltage value measurement unit 70 Housing 80 Operation button 100 DAISY playback device (electronic device)
CON Content MEE Measurement terminal voltage value MEI Measurement current value MET Correction voltage value table MEV Correction voltage value MEW Measurement power MTE Corrected terminal voltage value PGM Operation control program PGM2 Secondary battery remaining amount estimation program RMT Remaining amount table RM Remaining amount

Claims (6)

In electronic devices that output data to the output section by supplying power from a secondary battery
A current value measuring unit that measures the current value of the current flowing through the secondary battery,
A voltage value measuring unit that measures the terminal voltage value of the secondary battery at the time of measuring the current value, and a voltage value measuring unit.
A correction voltage value table in which the correction voltage value is linked to the measurement power calculated from the measurement current value and the measurement terminal voltage value measured at the time of measuring the current value, and the correction voltage value to the measurement terminal voltage value. A storage unit that stores the remaining amount table associated with the remaining amount of the secondary battery corresponding to the corrected terminal voltage value obtained by adding
It includes the output unit, the current value measuring unit, the voltage value measuring unit, and an operation control unit that controls the operation of the storage unit.
The motion control unit
A process of calculating the measured power from the product of the measured current value and the measured terminal voltage value, and storing the measured terminal voltage value and the measured power in the storage unit.
A process of extracting the corrected voltage value from the corrected voltage value table based on the measured power, and
A process of adding the correction voltage value to the terminal voltage value stored in the storage unit to calculate the corrected terminal voltage value.
Based on the corrected terminal voltage value, the remaining amount of the secondary battery is extracted from the remaining amount table, and the remaining amount of the secondary battery is output from the output unit. Electronic equipment. The operation control unit further includes a trigger button for starting the measurement of the current value by the current value measuring unit.
The electronic device according to claim 1, wherein the operation control unit causes the current value measuring unit to measure the current value when the trigger button is operated by the user. The electronic device according to claim 1 or 2, wherein the process of outputting the remaining amount of the secondary battery from the output unit is executed by interrupting the output content of the data being output by the output unit. .. This is a method for estimating the remaining amount of a secondary battery in an electronic device that outputs data to the output unit by supplying power from the secondary battery.
A process in which the operation control unit causes the current value measuring unit to measure the current value of the current flowing through the secondary battery and stores it in the storage unit as the measured current value.
A step in which the operation control unit causes the voltage value measuring unit to measure the terminal voltage value of the secondary battery and stores the terminal voltage value in the storage unit as the measured terminal voltage value.
A step in which the operation control unit calculates the measured power from the product of the measured current value and the measured terminal voltage value and stores the measured power in the storage unit.
The step of extracting the correction voltage value corresponding to the measurement power from the correction voltage value table in which the operation control unit is stored in advance in the storage unit and the correction voltage value is associated with the measurement power.
The operation control unit adds the correction voltage value to the measurement terminal voltage value stored in the storage unit to calculate the corrected terminal voltage value, and stores the corrected terminal voltage value in the storage unit. Process and
The operation control unit is stored in advance in the storage unit, and the remaining amount table corresponding to the corrected terminal voltage value is associated with the remaining amount of the secondary battery. The process of extracting the remaining battery level and
A step in which the operation control unit outputs the remaining amount of the secondary battery to the output unit based on the remaining amount of the secondary battery extracted from the remaining amount table.
A method for estimating the remaining amount of a secondary battery in an electronic device characterized by having. The method for estimating the remaining battery level in an electronic device according to claim 4, wherein the operation control unit executes each step after the operation of the trigger button by the user. The secondary battery in the electronic device according to claim 4 or 5, wherein the step of outputting the remaining amount of the secondary battery to the output unit interrupts the output content of the data being output to the output unit. Battery level estimation method.

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