JP2007201732A - Portable terminal having battery status display function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal capable of correctly showing the avilable time of telephone ccall, e-mails, or the like on the basis of the remaining battery capacity even when the performance of a battery is deteriorated. <P>SOLUTION: In the portable terminal having a plurality of operation modes to be operated by the battery and a battery status display function, it has a controller 2 composed of: a rechargeable battery; a processing part 21; a battery information processing part 22; an LCD control part 234; a radio control part 24; a function power processing part 25; a clock management part 26; a function power information storage part 27 and a battery information storage part 28 and is equipped with: a battery remaining capacity estimation function for estimating battery remaining capacity of the battery; a power consumption data accumulation function which accumulates power consumption data by every operation mode; an operable time prediction function which predicts operable time of the operation mode by battery remaining capacity estimation data estimated by the battery remaining capacity estimation function and power consumption data estimated by the power remaining capacity estimation function and an operable time display function for displaying the operable time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile terminal device having a function of displaying a state of a storage battery attached to a mobile terminal by converting the state into an actually usable time.

  As a method of detecting and displaying the remaining amount of battery used in the mobile terminal device, for example, the terminal voltage of the battery is detected and the remaining usage time is calculated based on this terminal voltage, the remaining battery level is “sufficient”, A method of displaying three levels of “medium” and “small” has been proposed (see, for example, Patent Document 1).

  Further, in the mobile terminal device, means for recording the power ON / OFF time and the charging / calling time after the completion of charging in order to accurately measure the power ON time and the cumulative call time and to predict the remaining battery usage time. In addition, it has been proposed to store a power OFF factor determination program that records the OFF time when any power is OFF, and a program that calculates the remaining battery usage time (see, for example, Patent Document 2). This method is a method of recording the power reception time and the power ON / OFF time from the battery charging to the next charging and recording the call time, and calculating the remaining battery usage time based on this. is there.

Also, in portable terminal devices that have a power save function that suppresses power consumption during silence, the transmission time is detected, the transmission rate is calculated, the average transmission rate is calculated from the past transmission rate, and the transmission output There has been proposed a method of calculating a remaining callable time from information and an average transmission rate and instructing a user (see, for example, Patent Document 3).
JP 7-131410 A JP 2003-193733 A JP 7-162955 A

  None of the above-mentioned methods already proposed takes into consideration the aging of the battery (rechargeable battery) used. That is, since the capacity of the rechargeable battery decreases depending on the usage status and the number of charge / discharge cycles, there is a problem that an error from the actual callable time becomes large. Thus, it is difficult to calculate an accurate remaining capacity from the battery terminal voltage. Therefore, in any of the above methods, it is difficult to accurately calculate and display the remaining capacity of the battery, that is, the usable time.

  An object of the present invention is to solve the above-described problem, and an object of the present invention is to express the remaining battery capacity as an accurate callable time for each operation mode even when the battery performance deteriorates in a mobile terminal device.

  Furthermore, the present invention provides a portable terminal device that can determine whether or not charging can be performed for the amount of charge that can be communicated even during short-time charging by displaying the callable time for each operation mode corresponding to the amount of charge during charging. The purpose is to provide.

  In addition, the present invention allows the mobile terminal device to notify the battery replacement time in consideration of the battery deterioration (sagging) phenomenon caused by repeated charging and discharging by counting the number of times the battery is repeatedly charged and discharged. To do.

  The present invention relates to a portable terminal device having a battery state display function that is operated by a rechargeable battery, and uses the remaining battery capacity (remaining capacity) based on the amount of charge, the amount of power used, the number of times the battery is charged, and the like. The remaining battery capacity is converted into the available call time using the power consumption corresponding to the call function (operation mode), and the available call time is displayed.

  In order to solve the above problem, the present invention has a function of periodically estimating and calculating the remaining battery capacity and managing power, and a function of managing power consumed by each function, from the setting information of the mobile terminal device Provided is a mobile terminal device capable of transmitting an accurate call possible time for each operation mode by displaying the remaining battery capacity as a call available time based on the prediction of power used by the terminal.

  In the present invention, the performance of the battery is deteriorated by managing the stored power by taking into account the state of the battery (the deterioration of the battery due to aging and repeated charge / discharge) in addition to the power consumption management of the device. Even in such a case, a mobile terminal device is provided that represents the accurate callable time for each operation mode from the remaining battery capacity.

  The present invention periodically monitors the voltage using an A / D converter that drives the battery voltage with a constant voltage circuit. Each function driven by the constant voltage circuit calculates accurate power consumption information based on the function that has been activated and the time that the function has been activated, based on pre-programmed power information and device setting information. . You may obtain | require the electric power of a constant voltage circuit part using an ammeter.

  A new battery is not deteriorated when it is new, and the holding power of the battery changes depending on the use situation and aging. The battery power fluctuation can be measured under the same condition by operating the same function for a certain time with the power consumed by the constant voltage circuit unit.

Since power management per function is performed, power consumption per unit time for each operation mode can be obtained.
Since changes in the battery are stored, the time for charging based on the stored information and the time during which the call can be made are displayed based on the function used during charging.

  That is, the present invention provides a battery remaining amount estimating means for estimating the remaining capacity of the battery, a power consumption data storing means for storing the power consumption data of the apparatus, and an operation capable of predicting an operable time based on the remaining capacity of the battery. A plurality of battery-operated battery units, each comprising a time prediction unit and a battery state display unit that displays a remaining battery capacity estimated by the battery remaining amount estimation unit or an operable time predicted by the operable time prediction unit. The portable terminal device having an operation mode, wherein the battery remaining amount estimating means includes a battery voltage measuring means for measuring a battery voltage during operation or non-operation, a battery voltage during operation or non-operation, and a remaining battery. Battery voltage corresponding battery remaining amount data storage means for storing the correspondence of capacity, and the battery voltage corresponding battery remaining amount data corresponding to the battery voltage data measured by the battery voltage measuring means. The battery remaining capacity estimation data stored in the storage means is read to estimate the remaining battery capacity, and the operable time predicting means includes the battery remaining capacity estimation data from the battery remaining capacity estimating means and the power consumption. The operation possible time for each operation mode is predicted based on the power consumption data from the data storage means, and the battery state is displayed.

  Further, in the portable terminal device according to the present invention, the battery is a storage battery that repeatedly charges and discharges, and the battery remaining amount estimation unit includes a charge / discharge number counting unit that counts the number of times the storage battery is charged or discharged; Further comprising performance deterioration data storage means for storing the correspondence between the number of charge / discharge cycles and the performance deterioration of the storage battery, estimating the performance deterioration of the storage battery from the number of charge / discharge cycles of the storage battery, and correcting the estimated battery capacity remaining value The battery status is displayed by displaying or notifying the battery replacement time of the storage battery. Furthermore, in the portable terminal device, the present invention uses the charging characteristics stored in the performance deterioration data storage means for storing the correspondence between the number of times of charging / discharging and the performance deterioration of the storage battery, and starts charging with the remaining capacity at the start of charging. The amount of battery charge during charging is estimated from the elapsed time since then, and the operable time according to the amount of charge at that time is displayed.

  According to the portable terminal device of the present invention, even if the battery is deteriorated, it is possible to know the accurate callable time and mailable communication time for each operation mode, so that communication can be performed with peace of mind. In addition, since the portable terminal device according to the present invention can display the time available for a call even when the battery is being charged, it can be determined whether the call that can satisfy the requirement can be satisfied with the minimum charge time. Furthermore, since the portable terminal device according to the present invention can compare the power consumption for each function, it can display the start and stop of the function for each operation mode by time.

  The outline of the circuit configuration of the portable terminal device according to the present invention will be described with reference to FIG. The portable terminal device 100 includes a battery circuit unit 1, a control unit 2, a key input unit 31, a microphone 32, a speaker 33, an LCD display unit 34, an LED display unit 35, a wireless unit 4, an A / And a D converter 7. An AC adapter 8 is connected to the battery circuit unit 1 of the mobile terminal device 100.

  The battery circuit unit 1 charges an external electric power to a storage battery and supplies a DC voltage used in the apparatus to an internal power supply of the apparatus via a constant voltage power supply circuit, and supplies battery voltage information to the A / D converter 7. It is the circuit which supplies to.

  The control unit 2 is a function processing unit for controlling various functions in the apparatus.

  The key input unit 31 is an interface for taking in information from the outside, and includes, for example, a numeric keypad.

  The microphone 32 is an interface that captures audio for a call.

  The speaker 33 is an interface that outputs sound for a call.

  The LCD display unit 34 is composed of an LCD and functions as an operable time display means for displaying various functions and service information, and also as a battery status display means.

  The LED display unit 35 is a display device composed of LEDs, and displays operation states of various functions.

  The wireless unit 4 is a wireless communication circuit for performing wireless communication with other communication terminal devices.

  The A / D converter 7 is a circuit for converting the battery voltage of the battery circuit unit in the portable terminal device to digital and obtaining the battery voltage as digital information.

  The AC adapter 8 is an adapter that converts a commercial power source into a DC power source, and serves as an operating power source for the apparatus and also serves as a power source for charging a battery.

  The configuration of the battery circuit unit 1 will be described with reference to FIG. The battery circuit unit 1 includes a diode 11, a rechargeable battery 12, and a constant voltage power supply circuit 13.

  The diode 11 is a diode that supplies direct current power from the AC adapter 8 to each block in the portable terminal device including the battery 12 and blocks current flow from the rechargeable battery 12 to the AC adapter 8.

  The rechargeable battery 12 is a battery that serves as a power source to be supplied to the portable terminal device when the power supply from the AC adapter is lost, and various rechargeable batteries (storage batteries) such as nickel cadmium, nickel metal hydride, and lithium are used. be able to.

  The constant voltage power supply circuit 13 is a power supply circuit that supplies a voltage from the battery 12 to each unit in the portable terminal device while maintaining a constant voltage.

  The functional configuration of the control unit 2 will be described with reference to FIG. The control unit 2 includes a processing unit 21, a battery information processing unit 22, a KEY control unit 231, a microphone control unit 232, a speaker control unit 233, an LCD control unit 234, an LED control unit 235, and a wireless control unit. 24, a functional power processing unit 25, a clock management unit 26, a functional power information storage unit 27, and a battery information storage unit 28.

  The processing unit 21 is a function processing unit that controls the operation of each unit of the control unit 2. The processing unit 21 is configured to estimate the remaining battery capacity from the battery voltage information and various battery information stored in the battery information storage unit 28, and the functional power corresponding to the estimated remaining battery capacity and operation function. It has an operable time prediction function for predicting an operable time for each operation mode from information (information on power consumption for each functional operation mode).

  The battery information processing unit 22 is a function processing unit that monitors the battery voltage of the battery circuit unit 1 and counts the number of times of charging / discharging of the battery, and other various battery information. Based on the number of repetitions, the battery deterioration (sagging) is also predicted.

  The KEY control unit 231 is a function processing unit that controls the key input unit 31 for inputting keys from the outside.

  The microphone control unit 232 is a function processing unit that processes voice input from the microphone 32 that is voice input means for calls.

  The speaker control unit 233 is a processing unit that controls the speaker 33 which is a voice output unit for a call.

  The LCD control unit 234 is an LCD control processing unit for displaying various information on the LCD 34. The various information includes a function of notifying the remaining battery capacity as an available call time in addition to incoming calls and number information.

  The LED control unit 235 is an LED control function processing unit for displaying various information on the LED 35.

  The wireless control unit 24 is a wireless control function processing unit for the mobile terminal device 100 to wirelessly communicate with other communication terminal devices via wireless communication. The radio control unit 24 performs control such as call control call control.

  The functional power processing unit 25 is a functional processing unit having a power usage prediction function that predicts a power usage amount for each function of the mobile terminal device 100 based on information stored in the functional power information storage unit 27. It has a function of measuring the power used for each function of the mobile terminal device and storing it in the functional power information storage unit 27, and a function of measuring the amount of power used based on the battery usage mode.

  The clock management unit 26 is a clock management function processing unit for managing the charge / discharge time of the rechargeable battery 12, the total usage time, and the activation time of each function. In addition to the device built-in clock function, measurement may be performed using a network, a radio clock, or the like.

  The functional power information storage unit 27 is a function processing unit that stores power consumption information corresponding to the operation mode for each function in the mobile terminal device. The functional power information storage unit 27 stores, as power information for all functions, power consumption information when each functional unit is activated in advance for each functional block corresponding to an operation state (operation mode). FIG. 4 shows an example of power information for each function, that is, power consumption information.

  By adding the functions in operation, the power consumption of the entire apparatus corresponding to the operation mode can be obtained. In determining the power consumption of the entire device, a power meter is inserted in the constant voltage power supply circuit output section, and the power when each function is operated is measured from the measurement results, and the difference between the total function power information and the actual measurement is obtained. It is also possible to minimize the power error due to individual differences.

  The power consumption for each function can be obtained by measuring the power consumption in a state where each function is activated and stopped and obtaining a difference. By using this numerical value, errors due to individual differences in power consumption for each function of each mobile terminal device can be eliminated.

  Information on the total power consumption up to the present can be obtained by obtaining the time from the end of charging to the execution of each function actually used. Based on the total amount of power used up to now and the current battery voltage, the remaining battery capacity can be determined in consideration of charging / discharging information such as charging / discharging history.

  The battery information storage unit 28 stores in advance various battery information such as battery type, charge / discharge characteristics, charge voltage, discharge voltage, charge / discharge frequency (charge / discharge history), which are characteristics of the battery to be mounted. Part.

  An example of power consumption information for all functions stored in the functional power information storage unit 27 will be described with reference to FIG. The power consumption information for all functions describes the power consumption for each function corresponding to the various operation states of the mobile terminal device 100 for each functional block shown in FIG.

For example, the wireless control unit 24 that executes the function A consumes 3 mW of power in a function stop state in which all communication functions are stopped when the power is turned on, and 30 mW in the first function being transmitted. And the second function being received consumes 20 mW.
The LCD control unit 234 that executes the function B turns off all the LCDs and consumes 1 mW of power in the function stop state in which all communication functions are stopped when the power is turned on, and turns on the LCD. In the first function, 10 mW is consumed, and in the second function in which the backlight is turned on and the LCD is displayed, 50 mW is consumed.
The LED control unit 235 that executes the function C is the first to turn on the red diode by turning off the light in the function stop state in which all communication functions are stopped when the power is turned on, and the power consumption is 0 mW. The function consumes 10 mW, and the second function that turns on the green diode consumes 20 mW.
The KYE control unit 231 that executes the function D consumes 0 mW in the function stop state in which all communication functions are stopped when the power is turned on, and 0.1 mW in the first function waiting for the key press. The second function in the key-pressed state consumes 0.2 mW of power.
The microphone control unit 232 that executes the function E consumes 0 mW in the function stop state in which all communication functions are stopped when the power is turned on, and 0.1 mW in the first function of sensitivity + 1. The second function that consumes power and further increases the sensitivity by 1 consumes 0.1 mW, and the nth function that increases the sensitivity by 1 consumes 0.1 mW.
The speaker control unit 233 that executes the function F consumes 0 mw in the function stop state in which all communication functions are stopped when the power is turned on, 5 mW in the first function that adds +1, and the volume The second function that increments +1 consumes 5 mW, and the nth function that increments the volume consumes 5 mW.
The functional power processing unit 25 that executes the function G consumes 0 mW in the function stop state in which all communication functions are stopped when the power is turned on, and consumes 2 mW in the effective first function. It is.
The battery information processing unit 22 executing the function H consumes 0 mW in the function stop state in which all communication functions are stopped when the power is turned on, and consumes 4 mW in the effective first function. It is.
The functional power information storage unit 27 that executes the function I consumes 0 mW in the function stop state in which all communication functions are stopped when the power is turned on, and consumes 1 mW in the effective first function. Electric power.
The battery information storage unit 28 that executes the function J consumes 0 mW in the function stop state in which all communication functions are stopped when the power is turned on, and 1 mW in the effective first function. It is.
The processing unit 21 that executes the function K has a power consumption of 0 mW in a function stop state in which all communication functions are stopped when the power is turned on, and a first function (for example, a standby state) that is a low speed process. 10 mW power consumption, 20 mW power consumption in the second function (for example, when the key is pressed) that is medium speed processing, and 30 mW power consumption in the nth function (for example, during communication) that is the high speed processing. It is.

  Under such conditions, function A consumes 3 mW of power outage when the communication function or the like does not work when power is turned on, and adds power consumption of function outage and first function during transmission. It consumes 3 + 30 = 33 mW of power, consumes power of 3 + 20 = 23 mW, which is the sum of the power consumption of the second function and the function stop during reception, and consumes the power of the first function and the second function during the call. Consumes 3 + 30 + 20 = 53 mW of power. Similarly, function B consumes 1 mW of power to stop functioning when the communication function or the like is not activated with the power turned on, and 1 + 10 = 11 mW obtained by adding the power consumption of the stop function and the first function when LCD is displayed. When the LCD is displayed with the backlight turned on, 1 + 10 + 50 = 61 mW, which is the sum of the stop function, the first function, and the second function, is consumed. The function E is incremented by 0.1 mW as the first function + second function + third function every time the microphone sensitivity is increased by one. Similarly, every time the volume of the speaker is increased by 1, the function F is incremented by 5 mW, such as the first function + second function + third function.

  Here, deterioration (sagging) due to repeated charging and discharging of a rechargeable battery will be described. FIG. 5 is a diagram showing the relationship between the battery voltage and the usage time. The vertical axis shows the battery voltage, the horizontal axis shows the usage time, and the battery voltage decreases with the usage time due to constant power consumption (discharge current). It is a figure which shows a condition typically. As indicated by A in the figure, when there is no deterioration of the battery, the battery voltage gradually decreases from the full charge voltage as the usage time elapses, and reaches the lower limit voltage of the constant voltage circuit. On the other hand, as shown by B in the figure, when the battery has deteriorated due to repeated charge and discharge, the battery voltage is fully charged with the same power consumption (discharge current) as the usage time elapses. From this time, the voltage drops rapidly and reaches the lower limit voltage of the constant voltage circuit. That is, even if the batteries are the same, the batteries that are repeatedly charged and discharged and deteriorated are fewer than the batteries that are not deteriorated in usable capacity from a fully charged state. In order to know the degree of battery deterioration, it can be determined by looking at the time to reach the lower limit voltage of the constant voltage circuit, but how much the battery voltage and battery voltage drop at a certain time at any time during use It is possible to know the degree of deterioration of the battery, that is, the remaining capacity of the battery without waiting until the lower limit voltage of the constant voltage circuit is reached.

  From another viewpoint of the above phenomenon, the charging capacity of the battery varies depending on the degree of deterioration of the battery. That is, as shown by a curve A in FIG. 6, in a battery without deterioration, a battery charge amount (battery remaining capacity) after being fully charged in a predetermined charging time is lower than that of a battery with battery deterioration shown by a curve B. It becomes larger than the remaining battery capacity after full charge in time.

  Furthermore, as shown in FIG. 7, even in the same battery, as the number of times of charging / discharging increases, the battery charge amount, that is, the remaining battery capacity decreases. This phenomenon is also based on battery deterioration.

  The present invention records the number of charge / discharge cycles and the discharge characteristics of the battery when charging / discharging is repeated, and can determine the life of the battery. That is, among the characteristics charged and discharged in the past, the average discharge characteristics (the amount of decrease in the battery voltage with respect to a predetermined power consumption) are calculated over the past several times. The battery deterioration can be estimated by obtaining the change in the battery capacity from the calculation result. In addition, the amount of charge of the battery is almost linear until the battery voltage becomes constant (until it reaches about 80% of the amount of charge), and then the battery voltage rises slowly, and then charging continues. However, the battery voltage does not increase and becomes a constant voltage. Therefore, the charge amount can be calculated from the battery voltage after charging.

  Furthermore, according to the present invention, the amount of charge (remaining battery capacity) can be determined based on battery characteristics (such as the number of charge / discharge cycles), the charging time, and the usage time for each function (operation mode). It is possible to obtain a callable time based on the power and display an accurate callable time for each operation mode of each function even during charging.

  With reference to FIG. 8, the power determination process of the entire apparatus for obtaining the functional power information stored in the functional power information storage unit 27 will be described. When the functional power information acquisition process is started, the functional power processing unit 25 determines whether or not the function A process is to be executed (S1). When the function A is to be executed, time measurement is started (S2), and function A is executed (S3). It is determined whether or not the execution of the function A has been completed (S4). When the process is completed, the time measurement is terminated (S5). With this processing, the execution time of the function A can be known. Next, the execution time and power consumption of the function A, that is, the power information of the function A is calculated, and the function power (power consumption amount) per unit time is stored in the function power information storage unit 27 (S6). It is determined whether the acquisition of all function information has been completed (S7). If not, the process returns to step S1, and it is determined whether or not the function A is being executed. In this case, since the process of the function A has been completed, the process shifts to the execution of the function B. It is determined whether or not the function B is executed (S8). When the process of the function B is executed, time measurement is started (S9) and the function B is executed (S10). It is determined whether or not the execution of the function B is finished (S11), and when the process is finished, the time measurement is finished (S12). With this process, the execution time of the function B can be known. Next, the execution time and power consumption of the function B, that is, the power information of the function B is calculated, and the function power (power consumption amount) per unit time is stored in the function power information storage unit 27 (S13). It is determined whether the acquisition of all function information has been completed (S7). If not, the process returns to step S1, and it is determined whether or not the function A is being executed. In this case, since neither function A nor function B is executed, the process proceeds to the next function. In this way, the process of the function n is executed in the same manner as described above (S14 to S19), it is determined whether the execution of the processes of all functions is completed (S7), and the execution of the processes of all functions is completed. If so, the power consumption for each function (operation mode) of the entire apparatus is determined (S20), and the process ends.

  In this way, the power consumption of each function is managed in W (watts). For example, the power changes between standby power and call power. To manage power consumption more accurately, how many minutes it took to stand-by (each function in the standby state), how many seconds it took to receive a call (each function in the incoming state), or in communication (in-communication state) The power consumption of the entire apparatus varies depending on how many minutes it takes for each function. By recording this every unit time for each function, a theoretical value of the power consumption consumed by the entire apparatus can be obtained. If the voltage drop of the battery based on the theoretical device power consumption and the actual device power consumption is known, the degree of battery sag can be obtained from FIG. By knowing how much the battery has settled, it is possible to obtain the amount of time that the remaining amount of power can be talked to.

  With reference to FIG. 9, the flow of the callable time display process executed by the processing unit 21 and the battery information processing unit 22 will be described. When the callable time display process is started, the clock management unit 26 determines whether or not the timer has been completed (S31). When the timer is completed, the battery information processing unit 22 measures the battery voltage from the input voltage information (S32). The processing unit 21 calculates the power consumption during measurement by referring to the functional power information storage unit 27 and examining the functional power information during voltage measurement (S38). The processing unit 21 calculates the overall device power based on the functional power information stored in the functional power information storage unit 27, and uses the usage time by the clock management unit 26 to calculate the setting mode of the telephone from the functional power information of FIG. 4. The power consumption consumed during communication is predicted and calculated based on the transmission power and the reception power (S33). The processing unit 21 predicts a voltage drop from the battery history stored in the battery information storage unit 28, the battery voltage measured in step S32, and the power consumption when measured from the power calculation at the time of voltage measurement (S38) (S34). ). Next, the processing unit 21 predicts the remaining capacity of the battery from the history such as the number of times of charging and discharging stored in the battery information storage unit 28 and the battery voltage information (S35). The processing unit 21 uses the predicted remaining battery capacity and the power consumption of the call function stored in the functional power information storage unit 27 to determine how much time from the current remaining battery capacity and the communication power consumption prediction calculation (S33). A calculation for converting to a communicable time for communication is performed (S36), the obtained communicable time is displayed on the LCD 34 (S37), and the communicable time display process is terminated.

  In the above description, the example of estimating the callable time for each operation mode of each function based on the discharge state (remaining capacity) of the battery is shown. However, the battery voltage, the charging time, the charging power, etc. are monitored when the battery is charged. The amount of charge (remaining battery capacity) is estimated, the available call time corresponding to the amount of charge is calculated, and can be displayed on the mobile terminal device being charged. According to this embodiment, it is possible to confirm how much a telephone call is currently possible for the mobile terminal device being charged.

  The number-of-charges counting process in the battery information processing unit 22 will be described with reference to FIG. The charging number counting process is a process for determining the battery life by counting the number of chargings, and is a process for notifying the user that the battery life has come. When the charge count measurement process is started from the time when a new battery is mounted, the battery information processing unit 22 measures the battery voltage (S41). The battery information processing unit 22 updates the battery voltage information (battery voltage information before update) stored in advance in the battery information storage unit 28 to the battery voltage measured in step S41 (S42). The battery information processing unit 22 compares the battery voltage before update with the battery voltage after update (S43). When the battery voltage after update is smaller than the battery voltage before update, the battery is discharged (battery operation) (S44). As a result, the charge count processing ends. In step S43, when the battery voltage after update is higher than the battery voltage before update, the battery information processing unit 22 determines that the mobile terminal device 100 is charging the battery, and the number of times of charging in the battery information storage unit 28 is reached. 1 is added to the information to update the number-of-charges information (S45). Next, the battery information processing unit 22 determines whether or not the updated number-of-charges information has reached an allowable number of charges set in advance (S46), and ends the number-of-charges counting process. In step SS46, if the updated number of times of charging has reached a preset allowable number of times of charging (the number of times of charging has expired), it is determined that the battery has reached the end of its life, and the battery replacement information is displayed on the LCD display unit 23 or the LED display unit 34. (S47), the user is informed that the battery has reached the end of its life, and the charging number counting process is terminated.

The figure explaining the structure of the hardware of the portable terminal device which has a battery state display function concerning this invention. The figure explaining the outline | summary of the structure of the hardware of the battery circuit part used by this invention. The functional block diagram explaining the functional structure of the control part in this invention. The figure explaining the example of the power information of all the functions stored in the functional power information storage part in this invention. The figure explaining the change of the battery voltage at the time of discharge of the battery which can be charged by using the deterioration of the battery as a parameter. The figure explaining the change of the battery voltage at the time of charge of the battery which can be charged using deterioration of a battery as a parameter. The figure explaining the charge amount characteristic accompanying the charge frequency of a storage battery. The figure explaining the process which acquires functional power information. The figure explaining the process which displays call possible time. The figure explaining charge frequency count processing.

Explanation of symbols

  1: battery circuit unit, 11: diode, 12: battery, 13: constant voltage power supply circuit, 2: control unit, 21: processing unit, 22: battery information processing unit, 231: KYE control unit, 232: microphone control unit, 233: Speaker control unit, 234: LCD control unit, 235: LED control unit, 24: Wireless control unit, 25: Functional power processing unit, 26: Clock management unit, 27: Functional power information storage unit, 28: Battery information storage Part, 31: key input part, 32: microphone, 33: speaker, 34: LCD display part, 35: LED display part, 4: wireless part, 7: A / D converter, 8: AC adapter,

Claims (3)

Battery remaining capacity estimating means for estimating the remaining capacity of the battery, power consumption data storing means for storing the power consumption data of the apparatus, operable time predicting means for predicting the operable time based on the remaining capacity of the battery, A portable terminal having a plurality of operation modes operated by a battery, comprising battery state display means for displaying the remaining battery capacity estimated by the remaining battery capacity estimation means or the operable time predicted by the operable time prediction means. A device,
The battery remaining amount estimating means includes
Battery voltage measuring means for measuring the battery voltage during operation or non-operation;
The battery voltage corresponding to the battery voltage data measured by the battery voltage measuring means, comprising battery voltage corresponding battery remaining data storing means for storing the correspondence between the battery voltage during operation or non-operation and the remaining capacity of the battery. Read the remaining battery capacity estimation data stored in the corresponding battery remaining data storage means to estimate the remaining battery capacity,
The operable time predicting means includes:
A portable terminal device having a battery state display function for predicting an operable time for each operation mode based on battery remaining amount estimation data from the battery remaining amount estimating unit and power consumption data from the power consumption data accumulating unit . The mobile terminal device according to claim 1,
The battery is a storage battery that repeats charging and discharging,
The battery remaining amount estimating means includes
Charge / discharge number counting means for counting the number of times the storage battery is charged or discharged; and
Further comprising performance deterioration data storage means for storing the correspondence between the number of charge / discharge cycles and the performance deterioration of the storage battery, estimating the performance deterioration of the storage battery from the number of charge / discharge cycles of the storage battery, and correcting the estimated battery capacity remaining value A portable terminal device having a battery state display function, wherein the battery replacement time of the storage battery is displayed or notified. The portable terminal device according to claim 1 or 2,
Charging the battery during charging from the remaining capacity at the start of charging and the elapsed time from the start of charging using the charging characteristics stored in the performance deterioration data storage means for storing the correspondence between the number of times of charging / discharging and the performance deterioration of the storage battery A portable terminal device having a battery state display function characterized in that the amount of charge is estimated and the operable time according to the amount of charge at that time is displayed.

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