WO2009084684A1 - 携帯電子機器及びその制御方法 - Google Patents
携帯電子機器及びその制御方法 Download PDFInfo
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- WO2009084684A1 WO2009084684A1 PCT/JP2008/073853 JP2008073853W WO2009084684A1 WO 2009084684 A1 WO2009084684 A1 WO 2009084684A1 JP 2008073853 W JP2008073853 W JP 2008073853W WO 2009084684 A1 WO2009084684 A1 WO 2009084684A1
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- rechargeable battery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
Definitions
- the present invention relates to a portable electronic device to which a rechargeable battery is attached, and more particularly to a portable electronic device that outputs rechargeable battery life information and a control method thereof.
- lithium-ion batteries are the mainstream for mobile phones, but in the future, mobile terminals will become smaller, lighter, and more sophisticated (continuous digital TV viewing, continuous music playback, web browsing, etc.) ), The charge / discharge cycle of the battery is accelerated, and as a result, it is expected that the battery life tends to be short with respect to the usage period of the portable terminal.
- a method of detecting the life of the battery a method for judging the life of the battery based on a change in the impedance value of the battery (for example, refer to Patent Document 1) and a function related to the charge / discharge curve are stored.
- a method of determining the battery life by weighting and calculating the deterioration value during charging / discharging see, for example, Patent Document 2.
- the battery life is defined by the battery manufacturer, and means, for example, the state when the initial capacity is reduced to about 50 to 60% by about 500 to 600 charge / discharge cycles. If this state is exceeded, the expected operation cannot be secured against the operation of the mobile terminal due to an increase in internal resistance or the like.
- Patent Document 1 a method has been proposed in which the number of cycles is converted from the state of the internal impedance to derive the lifetime, but the portable terminal often has no circuit for measuring current, It is difficult to perform such complicated control.
- Patent Document 2 since the degree of deterioration changes depending on the weighting of charging and discharging, a method for displaying the deterioration of the battery based on this degree is proposed.
- the specific system configuration and detection method are not described, and it is difficult to output the battery life accurately and clearly to the user in order to ensure the expected operation of the mobile terminal. It is.
- the present invention has been made in view of the above-described problems, and one of its purposes is to display the battery life accurately and clearly with a simple configuration without increasing the cost.
- An object of the present invention is to provide a portable electronic device and a control method thereof.
- the portable electronic device charges an output unit that outputs various types of information, a storage unit that stores a weighted value for each voltage value, and a rechargeable battery that is attached.
- a voltage measurement unit that measures the voltage of the rechargeable battery, and a weight value corresponding to the voltage value measured by the voltage measurement unit are extracted from the storage unit, and the extracted weight values are sequentially added.
- a control unit that specifies the charging number information and stores the information in the storage unit, and the control unit stores information on the life of the rechargeable battery based on the charging number information stored in the storage unit. The output is performed by the output unit.
- control unit measures the voltage of the rechargeable battery at the voltage measuring unit every time charging of the rechargeable battery occurs.
- control unit measures the voltage of the rechargeable battery at the voltage measuring unit every time charging of the rechargeable battery occurs.
- the weighting value corresponds to a large value at a voltage value close to full charge and a small value at a value close to the minimum operable voltage value.
- the storage unit stores a predetermined value for indicating that the life of the rechargeable battery has been reached, and the control unit sets the charge count information to the predetermined value. It is preferable to specify the information regarding the lifetime based on the remaining amount.
- control unit specifies the information on the life as the remaining chargeable number of times.
- the control unit detects a connection state of a charger that charges the rechargeable battery, and based on the connection state, the rechargeable battery is attached to the charger and It is preferable to determine the start and end of charging of the rechargeable battery by detecting that the rechargeable battery has been removed from the charger.
- the output unit includes a display unit that displays life information of the rechargeable battery based on the charge count information.
- the portable electronic device includes an operation unit that requests the control unit to initialize the charge count information stored in the storage unit by a predetermined operation, and the storage unit is an area that is not initialized.
- the control unit copies the same information as the charge count information to the non-initialized area and displays the life information. It is preferable to initialize.
- the storage unit stores a predetermined value for indicating that the life of the rechargeable battery has been reached, and the control unit sets the charge count information to the predetermined value. It is preferable to specify the information regarding the lifetime based on the remaining amount.
- control unit specifies the information regarding the lifetime as the remaining number of times of charging.
- the control unit detects a connection state of a charger that charges the rechargeable battery, and based on the connection state, the rechargeable battery is attached to the charger and It is preferable to determine the start and end of charging of the rechargeable battery by detecting that the rechargeable battery has been removed from the charger.
- the output unit includes a display unit that displays life information of the rechargeable battery based on the charge count information.
- the portable electronic device includes an operation unit that requests the control unit to initialize the charge count information stored in the storage unit by a predetermined operation, and the storage unit is an area that is not initialized.
- the control unit copies the same information as the charge count information to the non-initialized area and displays the life information. It is preferable to initialize.
- a method for controlling a portable electronic device is a control method in a portable electronic device that includes a rechargeable battery, an output unit, and a storage unit.
- the step of measuring the voltage of the rechargeable battery, the step of extracting the weighting value corresponding to the measured voltage value from the storage unit, and the extracted weighting A step of sequentially adding values, a step of specifying charging number information based on the added weighting value and storing it in the storage unit, and a rechargeable battery based on the charging number information stored in the storage unit And outputting the information related to the lifetime of the output by the output unit.
- the battery life can be accurately and clearly displayed.
- Mobile phone device 11 Operation key group 21 Display (output unit) 22 Audio output unit (output unit) 32 Rechargeable Battery 60 Transmission / Reception Processing Block 61 External Power Supply Connection Unit 62 Switch Unit 63 Memory 64 System IC (Control Unit, Voltage Measurement Unit) 70 Main antenna 100 Battery charger
- FIG. 1 is an external perspective view of a mobile phone device 1 which is an example of a mobile electronic device according to the present invention.
- a mobile phone device will be described.
- the present invention is not limited to this, and may be a PHS (Personal Handy phone System), a PDA (Personal Digital Assistant), a portable navigation device, a notebook personal computer, or the like. Also good.
- the mobile phone device 1 includes an operation unit side body unit 2 and a display unit side body unit 3.
- the operation unit side body unit 2 includes an operation key group 11 and a microphone 12 to which a voice uttered by a user during a call is input on the surface unit 10.
- the operation key group 11 includes a function setting operation button 13 for operating various functions such as various settings, a telephone book function, and a mail function, and an input operation button 14 for inputting a telephone number and characters such as mail.
- a determination operation button 15 for performing determination and scrolling in various operations.
- the display unit side body unit 3 includes a display 21 for displaying various types of information on the surface unit 20 and an audio output unit 22 for outputting the voice of the other party of the call.
- the upper end of the operation unit side body 2 and the lower end of the display unit side body 3 are connected via a hinge mechanism 4.
- the cellular phone device 1 relatively rotates the operation unit side body 2 and the display unit side body 3 connected via the hinge mechanism 4, thereby
- the display unit side body 3 can be in a state of being open to each other (open state), or the operation unit side body 2 and the display unit side body 3 can be in a folded state (folded state).
- a slide type in which one housing is slid in one direction from a state in which the body portion 3 is overlapped, or an axis line along the overlapping direction of the operation portion side housing portion 2 and the display portion side housing portion 3 It may be a rotary type (turn type) in which one housing is rotated around the center.
- FIG. 2 shows a perspective view in which a part of the operation unit side body 2 is disassembled.
- the operation unit side body unit 2 includes a circuit board 30, a rear case unit 31, a rechargeable battery 32 that is a rechargeable battery, and a rechargeable battery cover 33.
- the circuit board 30 is mounted with an element such as a CPU (corresponding to a system IC 64 described later) that performs predetermined arithmetic processing, and when the operation key group 11 on the surface portion 10 is operated by the user, A predetermined signal is supplied to the CPU. Further, battery terminals are mounted on the circuit board 30.
- a CPU corresponding to a system IC 64 described later
- the rear case portion 31 includes a hinge mechanism fixing portion 31A that fixes the hinge mechanism 4, a main antenna storage portion 31B that stores a main antenna 70 that performs communication in a predetermined use frequency band, and a rechargeable battery storage that stores a rechargeable battery 32. Part 31C.
- the characteristics of the rechargeable battery 32 will be described.
- the capacity is generally reduced to about 60% by the charge / discharge operation of about 500 cycles.
- a state where the capacity is reduced to about 60% is called a state where the battery life has been reached.
- the rechargeable battery 32 is still usable even when it reaches the end of its battery life, but in such a state, the impedance also increases, and the expected performance is exhibited. It is a difficult situation.
- the capacity decreases at an accelerated rate (see FIG. 3).
- FIG. 4 is a functional block diagram showing functions of the mobile phone device 1.
- the cellular phone device 1 includes a main antenna 70, a transmission / reception processing block 60 connected to the main antenna 70, a display 21 (output unit) for displaying various information, and a call partner.
- Audio output unit 22 (output unit) for outputting the side audio, an external power supply connection unit 61 connected to a commercial power supply and connected to an AC adapter, a switch unit 62 connected to the external power supply connection unit 61, a memory 63, a system IC 64 (control unit, voltage measurement unit), a rechargeable battery 32, and an operation key group 11.
- the main antenna 70 communicates with an external device (base station) in a predetermined use frequency band (for example, 800 MHz).
- a predetermined use frequency band for example, 800 MHz
- the predetermined use frequency band is 800 MHz, but other frequency bands may be used.
- the main antenna 70 may have a so-called dual-band compatible configuration that can support other used frequency bands (for example, 2 GHz) in addition to a predetermined used frequency band, and may have three or more types. You may be comprised by the type corresponding to multiple bands which can respond also to a use frequency band.
- the transmission / reception processing block 60 amplifies the signal received by the main antenna 70 with a low noise amplifier, demodulates the amplified signal, supplies the processed signal to the system IC 64, and receives the signal supplied from the system IC 64. Modulation processing is performed, the modulated signal is amplified by a power amplifier, and the amplified signal is transmitted from the main antenna 70 to an external device (base station).
- the display 21 and the audio output unit 22 play a role as an output unit that outputs various types of information visually and audibly to the user.
- the external power supply connection unit 61 is connected to an AC adapter (charger) 100 that converts an AC voltage supplied from a commercial power source into a DC voltage.
- AC adapter charger
- the switch unit 62 is configured by, for example, an FET, and is provided between the external power supply connection unit 61 and the system IC 64.
- the external power supply connection unit 61 is in accordance with a control signal (charge control signal) of the system IC 64. And the system IC 64 are switched to an electrically disconnected (OFF) state or a conductive (ON) state.
- the memory 63 is a non-volatile storage medium.
- the memory 63 stores a first area 63A that is an area for storing a charge rate and a discharge rate, and a cycle number count value (charge / discharge number information).
- the second area 63B is an area that can be written and erased according to the user's operation, and the count value of the number of cycles is stored, and the area cannot be erased according to the user's operation
- a third region 63C is included. Note that the third area 63C is an area that cannot be accessed by the user at all, but is configured to be freely accessible at the shop (the business side) or the like.
- the system IC 64 includes a ROM, a RAM, an ALU (Arithmetic and Logic Unit), a clock signal generation unit, an A / D converter unit, a plurality of I / O ports, and the like.
- the system IC 64 determines whether or not the charger 100 is connected to the external power supply connection unit 61, and controls the switching operation of the switch unit 62 by a charge control signal.
- the system IC 64 has a function as a voltage measuring unit that measures the voltage of the rechargeable battery 32 and a function of counting the number of times of charging / discharging by the rechargeable battery 32.
- the system IC 64 is an area where the same information as the count value of the number of cycles written in the second area 63B of the memory 63 is not initialized when a request for initialization is made by the operation key group 11.
- a configuration may be employed in which the display of the life information is initialized while copying to the third area 63C.
- the system IC 64 is connected to the operation key group 11 and performs a predetermined operation in response to an operation signal supplied from the operation key group 11.
- the system IC 64 measures the voltage of the rechargeable battery 32 every time the rechargeable battery 32 starts to be charged and ends, and extracts a weighting value corresponding to the measured voltage value from the memory 63. Then, the system IC 64 specifies the number-of-charges information by sequentially adding the extracted weight values and stores the information in the memory 63. In addition, the system IC 43 causes the display 21 and the audio output unit 22 to output information related to the life of the rechargeable battery 32 based on the number-of-charges information stored in the memory 63.
- the system IC 64 counts the number of charge / discharge cycles by the rechargeable battery 32 by measuring the voltage state of the rechargeable battery 32. For example, when the system IC 64 is electrically connected to the charger 100, the number of discharges is determined by measuring the battery voltage of the rechargeable battery 32 before the charging is started (considering the first weighting factor X due to deterioration). Count. In addition, when the system IC 64 is electrically disconnected from the charger 100, the number of times of charging is determined by measuring the battery voltage of the rechargeable battery 32 after charging is completed (a second weighting factor Y due to deterioration is taken into account). Count.
- the first weighting coefficient X and the second weighting coefficient Y are stored in a storage unit such as the memory 63 and are referred to when counting the number of times of charging / discharging.
- the first weighting factor X is, for example, according to FIG. (Battery voltage just before the start of charging ⁇ first weighting factor X), (4.20V or more ⁇ 0 times), (4.00V ⁇ 0.1 times), (3.88V ⁇ 0.2 times), (3.83V ⁇ 0.3 times), (3.77V ⁇ 0.4 times), (3.73V ⁇ 0.5 times), (3.69V ⁇ 0.6 times), (3.67V ⁇ 0.7 times), (3.65V ⁇ 0.8 times), (3.60V ⁇ 0.9 times), (3.30V ⁇ 1.0 times), It is determined as follows. FIG. 5 shows how the capacity ratio changes with respect to the discharge voltage.
- the second weighting coefficient Y is, for example, according to FIG. (Battery voltage immediately after completion of charging ⁇ second weighting coefficient Y), (3.60V ⁇ 0 times), (3.80V ⁇ 0.1 times), (3.84V ⁇ 0.2 times), (3.88V ⁇ 0.3 times), (3.92V ⁇ 0.4 times), (3.95V ⁇ 0.5 times), (3.98V ⁇ 0.6 times), (4.02V ⁇ 0.7 times), (4.05V ⁇ 0.8 times), (4.10V ⁇ 0.9 times), (4.20V ⁇ 1.0 times), It is determined as follows. FIG. 6 shows how the charging rate changes with respect to the charging voltage.
- the user sets the mobile phone device 1 in the charger 100 and charges it until the rechargeable battery 32 is fully charged. Thereafter, when the mobile phone device 1 is used until the rechargeable battery 32 becomes empty, the mobile phone device 1 can calculate the battery life by simply counting up the number of times of charging / discharging one by one. However, actually, the mobile phone device 1 may stop charging during charging, or may start charging even when the rechargeable battery 32 is in a fully charged state. In such a case, it becomes difficult for the mobile phone device 1 to accurately count the number of times of charging / discharging.
- the first weighting coefficient X and the second weighting coefficient Y described above are used as the count value of the number of cycles of charging / discharging by the rechargeable battery 32, thereby accurately charging / discharging.
- the number of cycles can be counted.
- the system IC 64 counts the number of times of charging and discharging in consideration of the first weighting coefficient X and the second weighting coefficient Y.
- the system IC 64 subtracts one time from the predetermined number of times of battery life (for example, 500 times), and uses the display 21 and the audio output unit 22 to that effect. Output to the user.
- “ ⁇ ” in FIG. 7 indicates the timing of checking the remaining voltage when the mobile phone device 1 is removed from the charger 100 (immediately after the end of charging), and “ ⁇ ” in FIG. The timing at which the remaining battery level is checked when the cellular phone device 1 is attached to the charger 100 (immediately before the start of charging) is shown.
- the number of cycles of charging / discharging by the rechargeable battery 32 according to the present invention is converted from the first use, and either charging / discharging or one of charging / discharging is performed for a predetermined number of times of battery life (for example, if 500 times is used, it is determined that the battery has reached the end of its life, and an output is made to prompt the user to replace the rechargeable battery 32.
- step S1 the system IC 64 determines whether or not the main power supply is turned on. If it is determined that the main power source is in the ON state (Yes), the process proceeds to step S2.
- step S2 the system IC 64 performs a display for confirming the initial setting of the number of cycles (count) on the display 21.
- FIG. 10 shows the state of the screen displayed on the display 21 in this step.
- a pictographic display 21b indicating the battery life accurately and clearly is displayed on the upper end portion of the display 21 along with a pictographic display 21a that roughly shows the remaining battery level.
- a character display of “remaining 398 times” is displayed in the character display area 21c beside the pictogram display 21b so as to indicate how many times the remaining battery life can be achieved.
- the predetermined area 21d of the display 21 can display, for example, “Power is turned on. Do you want to initialize the cycle life count?” To prompt the user to make a selection.
- step S3 the system IC 64 determines whether or not there is a request for initialization of the count value of the number of cycles. If it is determined that there is a request for initialization of the count value of the cycle number (Yes), the process proceeds to step S5. If it is determined that there is no request for initialization of the count value of the cycle number (No), the process proceeds to step S4. move on. If it is determined that there is a request for initialization of the count value of the number of cycles, the display 21 displays as shown in FIG. For example, in a predetermined area 21d of the display 21, a message such as “If you initialize, the history so far will disappear. Is it really okay?” Is displayed to alert the user.
- step S4 the system IC 64 performs a count value holding process for the number of cycles. After finishing the count value holding process of the cycle number, the process proceeds to step S7.
- step S5 the system IC 64 adds the count value of the cycle number to the third area 63C of the memory 63.
- the display 21 displays as shown in FIG. That is, in step S5, the count value of the number of cycles held in the second area 63B of the memory 63 is copied to the third area 63C.
- the pictograph display 21b is set to an expired state, and the character display "500 times remaining" is displayed in the character display area 21c.
- step S6 the system IC 64 initializes the count value of the number of cycles in the second area 63B of the memory 63. As described above, the count value of the number of cycles stored in the third area 63C of the memory 63 remains without being erased by a user operation. Therefore, the battery life of the rechargeable battery 32 continues to be accurately counted.
- step S7 the system IC 64 determines whether or not the charger 100 is electrically connected. If it is determined that the battery charger 100 is electrically connected (Yes), the process proceeds to step S11. If it is determined that the battery charger 100 is not electrically connected (No), the process proceeds to step S8. move on.
- step S8 the system IC 64 determines whether or not a request for turning off the main power supply has been made. If it is determined that a request to turn off the main power supply has been made (Yes), the process proceeds to step S9. If it is determined that a request to turn off the main power supply has not been made (No), the process proceeds to step S7. move on.
- step S9 the system IC 64 checks the battery voltage of the rechargeable battery 32.
- the battery voltage of the rechargeable battery 32 may be confirmed by the same method as in step S12 described later.
- step S10 the system IC 64 records the battery voltage of the rechargeable battery 32 in the memory 63, and then turns off the main power supply.
- step S11 the system IC 64 checks the battery voltage of the rechargeable battery 32 immediately after being connected to the charger 100.
- step S12 the system IC 64 calculates the deterioration rate at the time of discharge in consideration of the first weighting coefficient X determined according to FIG.
- step S13 the system IC 64 stores the deterioration rate at the time of discharge calculated in the process of step S12 in the memory 63.
- step S14 the system IC 64 determines whether or not it has been electrically removed from the charger 100. If it is determined that it has been electrically removed from the charger 100 (Yes), the process proceeds to step S15. If it is determined that it has not been electrically removed from the charger 100 (No), step S14 is repeated.
- step S15 the system IC 64 confirms the battery voltage of the rechargeable battery 32 immediately after being removed from the charger 100.
- step S16 the system IC 64 calculates the deterioration rate at the time of charging in consideration of the second weighting coefficient Y determined according to FIG.
- step S17 the system IC 64 stores the deterioration rate at the time of charging calculated in the process of step S16 in the memory 63.
- step S18 the system IC 64 outputs information on the deterioration state (battery life) to the user using the display 21 and the audio output unit 22.
- the display 21 displays as shown in FIG.
- step S19 the system IC 64 determines whether or not the count value of the number of cycles (number of times of battery life) has exceeded a predetermined value (for example, 500 times). When it is determined that the count value of the cycle number exceeds the predetermined value (Yes), the process proceeds to step S20, and when it is determined that the count value of the cycle number does not exceed the predetermined value (No), the step Return to S7.
- a predetermined value for example, 500 times.
- step S20 the system IC 64 uses the display 21 or the audio output unit 22 to output to the user to urge the user to replace the rechargeable battery 32 or the like.
- a display for prompting the replacement of the rechargeable battery 32 for example, as shown in FIG. 14, a pictogram display 21b indicating the battery life is blinked accurately and clearly, and “replacement” is displayed in the pictogram display 21b. "Flashes. In this way, the mobile phone device 1 alerts the user that the replacement time for the rechargeable battery 32 has come.
- the rechargeable battery 32 is removed from the charger 100 before it is fully charged, or the rechargeable battery 32 is connected to the charger 100 in a state near full charge. In such a case, the life of the rechargeable battery 32 is accurately measured.
- the mobile phone device 1 since the mobile phone device 1 clearly outputs the battery life to the user, the hardware configuration is changed unlike conventional methods (methods such as measuring impedance or measuring current). It is possible to respond by software control without doing so. Therefore, the mobile phone device 1 can output the battery life accurately and clearly to the user with a simple configuration without increasing the cost.
- the battery life can be recognized accurately and clearly, it is possible to improve the comfort in use without causing the user to judge the life of the rechargeable battery.
- the present invention as a result of being used beyond the lifetime of the rechargeable battery 32, for example, the loss of data due to damage to the rechargeable battery or sudden power interruption can be avoided. Can be improved.
- the third area 63C of the memory 63 is referred to. As a result, it is possible to determine whether the rechargeable battery 32 has deteriorated due to a defect in the rechargeable battery 32 or whether the battery capacity has decreased due to a large number of charge / discharge cycles.
- the count value of the number of charge / discharge cycles is stored in the memory 63.
- the present invention is not particularly limited to this embodiment.
- the count value of the number of charge / discharge cycles may be copied to the memory of the rechargeable battery 32 as needed. In such a configuration, even when only the rechargeable battery 32 is brought into the shop, it is possible to determine the use state by referring to the memory of the rechargeable battery 32.
- the user performs an operation to initialize the count value of the number of cycles of charging / discharging the rechargeable battery 32, it is stored in the third area 63C of the memory 63.
- the count value of the number of charge / discharge cycles of the rechargeable battery 32 is not erased. Therefore, even if the user makes a false report, this can be avoided and an appropriate response can be made.
- the count value of the number of charge / discharge cycles of the rechargeable battery 32 stored in the third area 63C of the memory 63 is not erased even by a user operation. Therefore, even if the user accidentally initializes the information stored in the second area 63B, the information is brought into the shop (the business side) and the business side The count value is copied from the area 63C to the second area 63B. Thereby, the mobile phone device 1 can restore the history of the count value of the cycle number.
- the replacement time of the rechargeable battery 32 is output to the user only by the information of the count value of the number of cycles, the user can clearly recognize the replacement time of the rechargeable battery 32. it can.
- the rechargeable battery 32 since the rechargeable battery 32 has a unique ID, it is possible to correctly manage the count value of the number of cycles of the target rechargeable battery, and even when a plurality of rechargeable batteries 32 are owned, Each of the charge / discharge cycle count values can be managed uniquely.
- examples of the output destination of the information of the rechargeable battery may be an audio output unit in addition to the display, but are not limited thereto.
- the information on the rechargeable battery may be output to an externally connected monitor or the like, or may be output to an external display device wirelessly connected via an antenna.
- the output unit may be an external connection terminal or a wireless communication unit in addition to the display and the audio output unit, and various forms are conceivable.
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Abstract
Description
11 操作キー群
21 ディスプレイ(出力部)
22 音声出力部(出力部)
32 充電池
60 送受信処理ブロック
61 外部電源接続部
62 スイッチ部
63 メモリ
64 システムIC(制御部、電圧測定部)
70 メインアンテナ
100 充電器
ここで、充電池32の特性について説明する。例えば、充電池32がリチウムイオン電池の場合には、一般的に、約500サイクル程度の充電・放電動作により、容量が約60パーセント程度にまで低下する。また、容量が約60パーセント程度にまで低下した状態を電池寿命に達した状態という。なお、充電池32は、電池寿命に達した状態であっても、まだ使用可能な状態ではあるが、このような状態においては、インピーダンスも上昇しており、所期の性能を発揮するのは困難な状況になっている。また、容量が約60パーセント未満に達した後は、容量が加速度的に低下してゆく(図3を参照。)。
また、図4は、携帯電話装置1の機能を示す機能ブロック図である。携帯電話装置1は、図4に示すように、メインアンテナ70と、メインアンテナ70に接続されている送受信処理ブロック60と、各種情報を表示するためのディスプレイ21(出力部)と、通話の相手側の音声を出力する音声出力部22(出力部)と、商用電源に接続され、ACアダプタが接続される外部電源接続部61と、外部電源接続部61に接続されるスイッチ部62と、メモリ63と、システムIC64(制御部、電圧測定部)と、充電池32と、操作キー群11と、を備える。
(充電開始直前の電池電圧 → 第1の重み付け係数X)、
(4.20V以上 → 0回)、
(4.00V → 0.1回)、
(3.88V → 0.2回)、
(3.83V → 0.3回)、
(3.77V → 0.4回)、
(3.73V → 0.5回)、
(3.69V → 0.6回)、
(3.67V → 0.7回)、
(3.65V → 0.8回)、
(3.60V → 0.9回)、
(3.30V → 1.0回)、
のように決定される。なお、図5は、放電電圧に対する容量率の変化の様子を示している。
(充電完了直後の電池電圧 → 第2の重み付け係数Y)、
(3.60V → 0回)、
(3.80V → 0.1回)、
(3.84V → 0.2回)、
(3.88V → 0.3回)、
(3.92V → 0.4回)、
(3.95V → 0.5回)、
(3.98V → 0.6回)、
(4.02V → 0.7回)、
(4.05V → 0.8回)、
(4.10V → 0.9回)、
(4.20V → 1.0回)、
のように決定される。なお、図6は、充電電圧に対する充電率の変化の様子を示している。
Claims (15)
- 各種の情報を出力する出力部と、
電圧値ごとに重み付け値を記憶する記憶部と、
装着される充電池に対して充電が生じる度に、前記充電池の電圧を測定する電圧測定部と、
前記電圧測定部にて測定された電圧値に対応する重み付け値を前記記憶部から抽出し、抽出された重み付け値を順次加算することにより充電回数情報を特定して前記記憶部に記憶する制御部とを備え、
前記制御部は、前記記憶部に記憶された前記充電回数情報に基づいて、前記充電池の寿命に関する情報を前記出力部により出力させることを特徴とする携帯電子機器。 - 前記制御部は、前記充電池に対して充電の終了が生じる度に、前記電圧測定部にて前記充電池の電圧を測定することを特徴とする請求項1に記載の携帯電子機器。
- 前記制御部は、前記充電池に対して充電の開始が生じる度に、前記電圧測定部にて前記充電池の電圧を測定することを特徴とする請求項2に記載の携帯電子機器。
- 前記重み付け値は、満充電に近い電圧値では大きい値に、動作可能最低電圧値に近い値では小さい値になるよう対応していることを特徴とする請求項3に記載の携帯電子機器。
- 前記記憶部は、前記充電池の寿命に達したことを示すための所定の値を記憶しており、
前記制御部は、前記充電回数情報が前記所定の値に対しての残量に基づいて、前記寿命に関する情報を特定することを特徴とする請求項4に記載の携帯電子機器。 - 前記制御部は、前記寿命に関する情報を、残り充電可能回数として特定することを特徴とする請求項5に記載の携帯電子機器。
- 前記制御部は、前記充電池への充電を行う充電器の接続状態を検出し、当該接続状態に基づいて、前記充電池が前記充電器に装着されたこと及び前記充電池が前記充電器から取り外されたことを検出することにより、前記充電池に対する充電の開始及び充電の終了を判別することを特徴とする請求項6に記載の携帯電子機器。
- 前記出力部は、前記充電回数情報に基づいて前記充電池の寿命情報を表示する表示部を有することを特徴とする請求項5に記載の携帯電子機器。
- 所定の操作により、前記記憶部に記憶される前記充電回数情報を初期化するように前記制御部に要求する操作部を備え、
前記記憶部は、初期化されない領域を有しており、
前記制御部は、前記操作部により初期化の要求が行われたとき、前記充電回数情報と同一の情報を前記初期化されない領域に複写するとともに、前記寿命情報の表示を初期化することを特徴とする請求項8に記載の携帯電子機器。 - 前記記憶部は、前記充電池の寿命に達したことを示すための所定の値を記憶しており、
前記制御部は、前記充電回数情報が前記所定の値に対しての残量に基づいて、前記寿命に関する情報を特定することを特徴とする請求項1に記載の携帯電子機器。 - 前記制御部は、前記寿命に関する情報を、残り充電回数として特定することを特徴とする請求項10に記載の携帯電子機器。
- 前記制御部は、前記充電池への充電を行う充電器の接続状態を検出し、当該接続状態に基づいて、前記充電池が前記充電器に装着されたこと及び前記充電池が前記充電器から取り外されたことを検出することにより、前記充電池に対する充電の開始及び充電の終了を判別することを特徴とする請求項3に記載の携帯電子機器。
- 前記出力部は、前記充電回数情報に基づいて前記充電池の寿命情報を表示する表示部を有することを特徴とする請求項3に記載の携帯電子機器。
- 所定の操作により、前記記憶部に記憶される前記充電回数情報を初期化するように前記制御部に要求する操作部を備え、
前記記憶部は、初期化されない領域を有しており、
前記制御部は、前記操作部により初期化の要求が行われたとき、前記充電回数情報と同一の情報を前記初期化されない領域に複写するとともに、前記寿命情報の表示を初期化することを特徴とする請求項3に記載の携帯電子機器。 - 充電池と、出力部と、記憶部とを備えた携帯電子機器における制御方法であって、
装着される充電池に対して、充電の開始及び充電の終了が生じる度に、前記充電池の電圧を測定するステップと、
測定された電圧値に対応する重み付け値を前記記憶部から抽出するステップと、
抽出された重み付け値を順次加算するステップと、
加算された重み付け値に基づいて充電回数情報を特定して前記記憶部に記憶するステップと、
前記記憶部に記憶された前記充電回数情報に基づいて、前記充電池の寿命に関する情報を前記出力部により出力させるステップと、
を有することを特徴とする携帯電子機器における制御方法。
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JP5327905B2 (ja) | 2011-03-24 | 2013-10-30 | Necインフロンティア株式会社 | 情報処理装置 |
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WO2013129499A1 (ja) * | 2012-02-27 | 2013-09-06 | 京セラ株式会社 | 制御装置、制御システム及び蓄電池制御方法 |
US9252617B2 (en) * | 2012-12-17 | 2016-02-02 | Lenovo (Singapore) Pte. Ltd. | Battery cycling and management |
KR20160124435A (ko) | 2015-04-20 | 2016-10-28 | 최윤석 | 보드 게임판의 정보를 휴대 단말기에 표시할 수 있는 보드 게임 장치 및 그 방법 |
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JPH1138106A (ja) * | 1997-07-16 | 1999-02-12 | Oki Electric Ind Co Ltd | 電子装置 |
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