JP2005130563A - Portable apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable apparatus capable of coping with unexpected running-down of charged power, without attaching an external component. <P>SOLUTION: The portable apparatus comprises a main power supply 11 comprising a battery 15, a sub power supply 12 comprising a battery 17, and a control part 13. The control part 13 decides whether the power required for operating the entire apparatus is stored in the battery 15 within the main power supply 11 or not. If it decides that a required power is stored, it makes the entire apparatus operate with the power supplied from the main power supply 11, and if it decides that the required power is not stored, it makes the entire apparatus operate with the power supplied from the sub power supply 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable device to which power is supplied from a battery.

  Here, a mobile phone will be described as an example of a conventional portable device. Usually, a mobile phone stores a battery pack therein. The battery pack is a package of a battery and a regulator that converts the output voltage of the battery into a predetermined voltage and outputs it, and has a structure that can be attached to and detached from the mobile phone body.

  By charging the battery pack in advance, the mobile phone can be used for a long time even in an environment where there is no external power supply. However, because the battery pack has a limited chargeable capacity, there is a possibility that unexpected charging may occur in an environment where power cannot be supplied from the outside. This situation occurs when an emergency call is awaited. It becomes a problem.

In order to solve this problem, an auxiliary battery charger for a mobile phone equipped with a solar cell (see Patent Document 1) and a temporary power supply device for a mobile phone equipped with a dry battery (see Patent Document 2) have been proposed.
Utility Model Registration No. 3091637 Utility Model Registration No. 3094545

  However, since a user usually carries a mobile phone in a pocket or bag, the mobile phone auxiliary charger equipped with the solar cell is likely to be in a pocket or bag. It is considered that the amount of power that can be supplied to the mobile phone by the auxiliary battery charger for a mobile phone equipped with a battery is not sufficient to operate the mobile phone. Therefore, the auxiliary battery charger for mobile phones equipped with the solar cell is not very practical.

  In addition, the auxiliary battery charger for mobile phones equipped with the solar cell and the temporary power supply device for mobile phones equipped with the dry battery are separate from the mobile phone body and are troublesome to carry. Otherwise, there is a problem that it is impossible to cope with unexpected battery pack charge out. In particular, the temporary power supply device for a mobile phone equipped with the above-described dry battery has a configuration including four or more AA dry batteries and is bulky, so it is troublesome to carry.

  In view of the above problems, an object of the present invention is to provide a portable device that can cope with unexpected charging failure without mounting external parts.

  To achieve the above object, in the portable device according to the present invention, a first power supply device having a first battery capable of charge / discharge and a second power supply device having a second battery capable of charge / discharge. Determining means for determining whether or not electric power necessary to operate the entire device is stored in the first battery; and electric power required to operate the entire device is stored in the first battery. When the determination means determines that the power is being supplied, the entire device is operated by the power supplied from the first power supply device, and the power necessary for operating the entire device is stored in the first battery. If the determination means determines that there is not, control means for operating the entire device with the power supplied from the second power supply device is provided.

  According to such a configuration, even if the first power supply device is out of charge, power is supplied by the second power supply device. Therefore, the first power supply device is unexpectedly out of charge without mounting external components. It can correspond to. That is, it is possible to avoid a state in which the mobile device is turned off even if the first power supply device is out of charge in an emergency.

  In addition, the second battery may be charged with electric power output from the first power supply device, and the capacity of the second battery may be smaller than the capacity of the first battery.

  According to such a configuration, it is not necessary to provide the external terminal for charging the second power supply device in the mobile device, and the configuration of the external terminal can be made the same as that of the conventional mobile device.

  ADVANTAGE OF THE INVENTION According to this invention, the portable apparatus which can respond to unexpected charge cut without mounting | wearing with external components is realizable. As a result, it is possible to avoid a situation in which the mobile phone is turned off in an emergency.

  An embodiment of the present invention will be described below with reference to the drawings. Here, a mobile phone will be described as an example. A functional block diagram of a mobile phone according to the present invention is shown in FIG.

  The mobile phone according to the present invention shown in FIG. 1 includes an antenna 1, a radio unit 2 that transmits and receives radio signals to and from a radio base station (not shown) via the antenna 1, and radio signals that are transmitted and received by the radio unit 2. A sound processing unit 3 that performs predetermined signal processing on the sound signal included in the sound signal, a speaker 4 that emits sound according to the sound signal processed by the sound processing unit 3, and a sound according to the collected external sound. And a microphone 5 for supplying an electric signal to the sound processing unit 3.

  The cellular phone according to the present invention shown in FIG. 1 includes a data processing unit 6 that performs predetermined signal processing on various data such as text data, HTML data, and programs included in a radio signal transmitted and received by the radio unit 2, and An operation unit 7 which has a plurality of keys and inputs various instructions such as data input such as numbers and characters and function selection, and stores various data processed by the data processing unit 6 and data input by the operation unit 7 Storage unit 8.

  Further, the mobile phone according to the present invention shown in FIG. 1 includes a display unit 9 for displaying data input by the operation unit 7 and data read from the storage unit 8, and multi-color light emission. LED 10, main power supply device 11, sub power supply device 12, and power supplied from main power supply device 11 or sub power supply device 12 are supplied to each block and the entire mobile phone The control part 13 which controls operation | movement and the switch 14 are provided.

  The main power supply device 11 includes a battery 15 that can be charged and discharged, and a regulator 16 that converts the output voltage of the battery 15 into a predetermined voltage and outputs the voltage to the control unit 13. The main power supply device 11 is stored inside the mobile phone and has a structure that can be attached to and detached from the mobile phone. The sub power supply device 12 includes a chargeable / dischargeable battery 17 and a regulator 18 that converts the output voltage of the battery 17 into a predetermined voltage and outputs the voltage to the control unit 13. The sub power supply device 12 is built in the mobile phone. A battery 17 having a smaller capacity than the battery 15 is used.

  Next, operation control related to the main power supply device 11 and the sub power supply device 12 of the mobile phone configured as described above will be described based on the flowchart shown in FIG.

  When the key to which the power on / off switching function of the operation unit 7 is assigned is pressed by the user while the power of the mobile phone in FIG. 1 is off, the control flow shown in FIG. 2 starts. Since both the regulators 16 and 18 are in the on state at the start of the control flow, the power required to operate the control unit 13 is stored in at least one of the battery 15 in the main power supply device 11 or the battery 17 in the sub power supply device 12. If so, the power of the mobile phone in FIG. 1 is turned on, and the process proceeds to step S10. On the other hand, if the power required to operate the control unit 13 is not stored in the battery 15 of the main power supply device 11 or the battery 17 of the sub power supply device 12, the control unit 13 does not operate. The control flow in FIG. 2 is not executed while the power supply of the telephone is off.

  In step S10, the control unit 13 detects the output voltage V1 of the battery 15, and determines whether the power necessary for operating each block is stored in the battery 15 in the main power supply device 11 or not. A determination is made based on the detection result. In addition, since there is a possibility of charging the battery 17 in the sub power supply device 12 in step S70 described later, in order to operate each block in step S10 even if the capacity of the battery 17 is subtracted from the power stored in the battery 15. It may be determined whether necessary power can be secured.

  If it is determined that the power required to operate each block is not stored in the battery 15 in the main power supply device 11 (No in step S10), the control unit 13 detects the output voltage V2 of the battery 17. Then, it is determined based on the detection result of the output voltage V2 whether or not the electric power necessary to operate each block is stored in the battery 17 in the sub power supply device 12 (step S20).

  If it is determined that the power necessary to operate each block is stored in the battery 17 in the sub power supply device 12 (Yes in step S20), the control unit 13 turns off the regulator 16 and turns off the regulator 18 Is turned on, receives power supply from the sub power supply device 12, and sends the power supplied from the sub power supply device 12 to each block (step S30). In the following step S40, the control unit 13 causes the display unit 9 to float-display that the remaining power of the main power supply device 11 is insufficient, or that the main power supply device 11 has been removed from the mobile phone body. The process proceeds to S50.

  On the other hand, if it is determined in step S20 that the power required to operate each block is not stored in the battery 17 in the sub power supply device 12 (No in step S20), the power of the mobile phone body is turned off. (Step S140), the flow ends.

  In step S50, the control unit 13 detects the output voltage V1 of the battery 15, and determines whether the power necessary for operating each block is stored in the battery 15 in the main power supply device 11 or not. A determination is made based on the detection result. Since there is a possibility that the battery 17 in the sub power supply device 12 is charged in step S70 described later, in order to operate each block in step S50 even if the capacity of the battery 17 is subtracted from the power stored in the battery 15. It may be determined whether necessary power can be secured.

  It is determined that the power necessary for operating each block is stored in the battery 15 in the main power supply device 11 due to factors such as the main power supply device 11 having the remaining power remaining attached to the mobile phone body. If (Yes in step S50), the control unit 13 turns on the regulator 16 and turns off the regulator 18, receives power supply from the main power supply device 11, and supplies the power supplied from the main power supply device 11 to each block. (Step S60).

  In subsequent step S70, the control unit 13 turns on the switch 14 that is normally in the off state. As a result, the sub power supply device 12 receives power from the main power supply device 11 and starts charging. In subsequent step S80, the control unit 13 causes the display unit 9 to pictograph that the sub power supply device 12 is being charged, and turns on the LED 10, and the process proceeds to step S90.

  In step S90, the control unit 13 detects the output voltage V2 of the battery 17, and determines whether or not the battery 17 in the sub power supply device 12 is fully charged based on the detection result of the output voltage V2. If it is determined that the battery 17 in the sub power supply device 12 is fully charged (Yes in step S90), the control unit 13 turns off the switch 14 to end the charging of the sub power supply device 12 (step S100). Then, the fact that the charging of the sub power supply device 12 has been completed is float-displayed on the display unit 9 and the LED 10 is turned off (step s110).

  If it is determined in step S10 described above that the electric power necessary for operating each block is stored in the battery 15 in the main power supply device 11 (Yes in step S10), the control unit 13 causes the regulator 16 to Is turned on, the regulator 18 is turned off, power is supplied from the main power supply device 11, and the power supplied from the main power supply device 11 is sent to each block (step S120). In subsequent step S130, the control unit 13 detects the output voltage V2 of the battery 17, and determines whether or not the battery 17 in the sub power supply device 12 is fully charged based on the detection result of the output voltage V2. If it is determined that the battery 17 in the sub power supply device 12 is fully charged (Yes in step S130), the process proceeds to step S10. On the other hand, if it is determined that the battery 17 in the sub power supply device 12 is not fully charged (No in step S130), the process proceeds to step S70.

  According to such an operation, even if the main power supply device 11 runs out of charge, power is supplied by the sub power supply device 12 built in the mobile phone, so that an unexpected main power supply device without mounting external parts is provided. It is possible to cope with 11 charge outs. That is, it is possible to avoid a state in which the power of the mobile phone is turned off even if the main power supply 11 is cut off in an emergency. In addition, since the sub power supply device 12 is charged by supplying power from the main power supply device 11, it is not necessary to provide an external terminal for charging the sub power supply device 12, and the configuration of the external terminal is the same as that of a conventional mobile phone. be able to.

  When power is supplied by the sub power supply device 12 (step S30 to step S50) and when the sub power supply device 12 is being charged (step S70 to step S100), the control unit 13 automatically controls the mobile phone body. May be provided with a function that can be set by the user so as to be in a power saving mode (such as turning off wallpaper setting). Further, the control unit 13 may cause the display unit 9 to pictograph whether the main power supply device 11 or the sub power supply device 12 is supplied with power when the mobile phone is powered on.

  In the present embodiment, a mobile phone has been described as an example. However, the present invention is applicable to all portable devices that use power supplied from a battery as a power source, such as PHS (Personal Handyphone System) and PDA (Personal Digital Assistant). Can also be applied.

These are functional block diagrams which show the example of 1 structure of the mobile telephone based on this invention. These are the control flowcharts of the mobile phone of FIG.

Explanation of symbols

10 LED
DESCRIPTION OF SYMBOLS 11 Main power supply device 12 Sub power supply device 13 Control part 14 Switch 15, 17 Battery 16, 18 Regulator

Claims (2)

A first power supply device having a first battery capable of charging and discharging;
A second power supply device having a second battery capable of charging and discharging;
Determining means for determining whether or not the electric power necessary to operate the entire device is stored in the first battery;
When the determination unit determines that the electric power necessary for operating the entire device is stored in the first battery, the entire device is operated by the electric power supplied from the first power supply device. Control means for operating the entire device with the power supplied from the second power supply device when the determination means determines that the power required for operating the first battery is not stored in the first battery;
A portable device comprising: Means for charging the second battery with electric power output from the first power supply;
The portable device according to claim 1, wherein a capacity of the second battery is smaller than a capacity of the first battery.

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