JP2006303613A - Mobile phone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile phone, capable of stably maintaining a power supply voltage and communication operations through the proper control of a charging state of an electricity storage section, making the structure compact, and is superior in power generating efficiency. <P>SOLUTION: The mobile phone is provided with a floating weight with a permanent magnet, one end of which is pivotally supported to a revolving shaft provided in a body of the mobile phone and freely revolved in two-ways; an induction coils, arranged facing the magnetic poles of the permanent magnet; the electricity storage section for rectifying power induced in the induction coil and storing the rectified power; a telephone drive power supply charged up by the electricity storage section; and a switching circuit section connecting the electricity storage section and the telephone drive power supply and turning them on and off. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile phone that can generate electric power by kinetic energy such as rocking and vibration generated by carrying a telephone body and charge its driving power source.

Conventionally, the mobile phone has been talked for a long time by improving the battery capacity, but the problem of running out of battery cannot be solved. Especially in emergency situations, running out of battery is a serious and serious problem. In preparation for such an unexpected situation, a technique for generating electric power by shaking and moving a mobile phone has been developed. For example, the following is disclosed.
Japanese Patent Application Laid-Open No. 2004-133867 discloses a mobile phone device in which a vibrator and a spring that oscillate in a reciprocating manner are incorporated in a mobile phone body, and mechanical energy that is always generated when the mobile phone is carried is converted into electrical energy by a built-in generator. Is described.
Patent Document 2 discloses a portable mobile phone with a generator, which includes a circling weight portion having an electromotive force induction coil that can circulate on a circumferential orbit, and a magnetic field forming portion that forms a spatially inhomogeneous magnetic field on the circumferential orbit. The phone is listed.
JP 2001-45126 A JP 2005-86902 A

However, the prior art described in the patent document has the following problems.
In the case of a mobile phone equipped with a conventional generator, since the driving power supply of the mobile phone is always charged, the power supply voltage and communication call operation become unstable due to discharge and interference. There were problems such as being unable to effectively supply kinetic energy supplied by carrying to the drive power supply.
In particular, in a mobile phone having a vibrator described in Patent Document 1, the vibrator speed becomes zero at the maximum displacement of the vibrator, and the vibrator's maximum speed is defined by the natural vibration of the vibrator and the spring system. For this reason, there was a problem that power generation efficiency was low.
In addition, in the mobile phone device in which the circling weight portion described in Patent Document 2 is rotated, an induction coil having a complicated structure is provided in the movable portion, so that it is difficult to make the power generation portion compact. There is a drawback that it is difficult to concentrate the mass for storing kinetic energy on the movable part. Furthermore, since the induced electric power can be acquired when the circular weight rotates in a certain direction, the kinetic energy at the time of reverse rotation cannot be taken out, and the power generation efficiency may be lowered.
The present invention has been made in view of such a problem, and can appropriately control the state of charge and stably maintain the power supply voltage and communication operation, and can reduce the structure and increase the power generation efficiency. The object is to provide an excellent mobile phone.

(1) The mobile phone of the present invention, which has been made to solve the above-mentioned conventional problems, is pivotally supported at one end by a rotary shaft provided in the mobile phone main body and freely rotated in both directions. An idler weight provided with a permanent magnet, an induction coil arranged opposite to the magnetic pole of the permanent magnet, a power storage unit that rectifies and stores electric power induced in the induction coil, and is charged by the power storage unit A telephone drive power source, and a switch circuit unit that connects and turns on the power storage unit and the telephone drive power source are configured.

(2) In the cellular phone of the present invention, in the above (1), the telephone drive power supply is provided with a voltage sensor for detecting a power supply voltage, and when the power supply voltage drops to a specified value, And switching to a charging mode for supplying the power of the power storage unit to the telephone drive power supply.

(3) The mobile phone of the present invention is characterized in that, in (2), the mobile phone is shifted to the energy saving mode in which only the reception function remains and the other functions are stopped in conjunction with the switching to the charging mode. is doing.

(4) In the cellular phone of the present invention, in the above (1) to (3), the display unit of the cellular phone body has a portable unit necessary for fully charging the telephone driving power source and / or the power storage unit It also has a feature in that an index of the number of steps is displayed.

  According to the present invention, the electric power generated via the induction coil fixedly disposed opposite to the permanent magnet that freely rotates in both directions is rectified and stored in the power storage unit, and between the power storage unit and the mobile phone power source. Since the switch circuit unit that connects and turns on and off is provided, the state of charge can be appropriately controlled to stably maintain the power supply voltage and communication operation. In addition, this makes it possible to reduce the structure of the mobile phone main body and provide a mobile phone excellent in power generation efficiency. Since power can always be generated while the mobile phone is being carried and swinging, the remaining battery level of the mobile phone is unlikely to decrease. Also, when the battery is low during a call or the like, it is possible to continue the call by generating power by shaking the mobile phone on the spot, which is excellent in psychological stability and convenience.

  The mobile phone of this embodiment includes an idler weight including a permanent magnet that is pivotally provided at one end of a rotary shaft provided in the mobile phone main body and freely rotated in both directions. An induction coil disposed opposite to the magnetic pole, a power storage unit that rectifies and stores electric power induced in the induction coil, a telephone drive power source that is charged by the power storage unit, the power storage unit, and the mobile phone power source And a switch circuit portion that is turned on and off by connecting the two. By providing this switch circuit portion, the state of charge can be properly controlled, and the power supply voltage in the drive power supply and the communication call operation of the mobile phone can be stably maintained.

A cellular phone is a telephone with a built-in driving power source that allows a relay point to a wired network called a base station and the telephone to communicate wirelessly and receive various communication services while moving. Cellular phones are classified by generation type according to the communication method with the base station, but the power storage unit of this embodiment can be applied to any of them as an auxiliary power source.
The loose weight has a predetermined rotational moment and is formed in a substantially half-disc shape. One end of the free weight is pivotally provided on the substrate of the mobile phone body so that it can freely rotate in both directions. It has become. Permanent magnets such as rare earth magnets, alnico magnets, and ferrite magnets are embedded in the free weight so that the NS magnetic poles are embedded in a direction perpendicular to the half disk surface, or are formed integrally therewith.
The induction coil is fixedly arranged at a predetermined interval on a rotation surface on which the floating weight rotates, and an induced electromotive force is generated by relatively sweeping a magnetic field formed by a permanent magnet. It has become.

The power storage unit can be composed of, for example, various electrolytic capacitors, electric double layer capacitors, multilayer ceramic capacitors, and the like. Note that a rectifier circuit is provided between the power storage unit and the induction coil, so that even if the positive or negative of the induced power generated in the induction coil fluctuates due to the forward or reverse rotating weight, this can be acquired effectively. it can.
As the telephone drive power source, for example, a nickel-metal hydride battery, a lithium battery, other backup batteries, and the like that are generally used in mobile phones can be applied.
The switch circuit unit is disposed between the power storage unit and the telephone drive power supply.For example, when the power supply voltage of the telephone drive power supply drops below a predetermined value or when the switch button provided on the mobile phone body is operated, Thus, the telephone drive power supply has a function of shifting to a chargeable state.

  The cellular phone according to the present embodiment can be provided with a voltage sensor for detecting the power supply voltage of the telephone drive power supply, and the switch circuit unit when the power supply voltage drops to a preset specified value. It is also possible to switch to a charging mode in which the electric power of the power storage unit is supplied to the telephone drive power supply via. As a result, discharge and interference between the power storage unit and the telephone drive power source are avoided, and power from the power storage unit can be efficiently supplied to the telephone drive power source only when it is required.

  In addition, the mobile phone of the present embodiment can be shifted to the energy saving mode in which only the receiving function is left and other functions are stopped in conjunction with the switching to the charging mode, thereby reducing power consumption. Furthermore, the mobile phone can be handled economically and stably.

  In the mobile phone according to the present embodiment, an indicator of the number of portable steps required to fully charge the telephone drive power source and / or the power storage unit may be displayed on the display unit of the mobile phone main body. Therefore, the cellular phone can be held in a state in which the target number of steps is always displayed to the user, which can be used not only for maintenance management of the telephone drive power supply but also for user health management.

Hereinafter, the cellular phone according to the present embodiment will be described more specifically with reference to the drawings. FIG. 1 is a plan view of a mobile phone according to an embodiment of the present invention, FIG. 2 is a side sectional view of the mobile phone, and FIG. 3 is a block diagram illustrating a charging function of the mobile phone. It is.
1 to 3, reference numeral 10 denotes a mobile phone according to the present embodiment, 11 denotes a substrate of the mobile phone main body 10 a, 12 denotes a rotating shaft fixed to the substrate 11, and 13 denotes one end of the rotating shaft 12. An idler weight formed in the shape of a half disk that is pivotally supported and freely rotated, 14 is an induction coil disposed on the substrate 11 facing the magnetic pole surface of the permanent magnet provided on the idler weight 13, and 15 is idle. A power storage unit 16 including a capacitor or the like for rectifying and storing electric power induced in the induction coil 14 by the rotation of the weight 13 is driven by the power storage unit 15 to drive the control unit 20 that controls the mobile phone. A telephone drive power source such as a lithium battery, 17 a switch circuit unit for turning on and off between the power storage unit 15 and the telephone drive power source 16, 18 a liquid crystal display unit for displaying communication information, operation instruction information, and the like, 19 mobile phone Dial button provided on the front side of the main body 10a is an operation unit such as.
3 rotates the idler weight 13, the permanent magnet provided on the idler weight 13, the induction coil 14 disposed on the substrate 11 facing the rotating permanent magnet, and the idler weight 13. The rotary shaft 12 is configured to be freely supported.
In addition, the liquid crystal display unit 18 of the mobile phone body 10a needs an index such as the number of mobile steps that is a reference for fully charging the telephone drive power supply 16 and the power storage unit 15, that is, the number of times the mobile phone 10 is swung. It is displayed accordingly.

  As shown in FIG. 3, the power storage unit 15 is connected to the telephone drive power supply 16 via the switch circuit unit 17, and by electrically separating the telephone drive power supply 16 and the power storage unit 15 as necessary, the mobile phone It can also be used in a normal mode in which the vessel 10 is operated independently. As a result, even when the power storage unit 15 is being charged or in a state of insufficient voltage, it can be stably operated without causing interference with the telephone drive power supply 16 of the mobile phone 10. The power storage unit 15 always stores kinetic energy as electric energy through the power generation unit 21 while the mobile phone 10 is being carried. Then, when the stored power reaches a predetermined value, it is switched to the charging mode via the switch circuit unit 17 and discharged from the power storage unit 15 to the telephone drive power supply 16 so that necessary power supply is performed. I have to.

  FIG. 4 is a schematic explanatory diagram of a circuit configuration in the power generation unit 21 and the power storage unit 15. When the mobile phone 10 is carried in a pocket or the like of the clothes, the free weight 13 rotates or rotates, and the magnetic flux of the permanent magnet provided on the free weight 13 is swept through the induction coil 14 to induce induction. Electric power is generated in the induction coil 14. The inductive current charges the power storage unit 15 including an electrolytic capacitor through the diodes D2 and D3 of the power generation circuit connected to the induction coil. When the idle weight 13 rotates in the reverse direction, the power storage unit 15 is charged through the diodes D4 and D1 of the power generation circuit by induced currents in the positive and negative directions. Thus, the induction current generated in the induction coil 14 is full-wave rectified by the diodes D1 to D4, so that the power storage unit 15 is efficiently charged each time the free weight 13 rotates in both directions. Yes.

  FIG. 5 is a flowchart showing an example of switching between the charging mode and the normal mode in the operating state of the mobile phone 10 using the switch circuit unit 17. Here, a voltage sensor (not shown) for detecting the power supply voltage of the telephone drive power supply 16 is provided on the substrate 11 of the mobile phone 10, and the control unit 20 that controls the mobile phone 10 detects from the voltage sensor. A signal is input.

In the first step S <b> 1, sensor data from voltage sensors arranged in the telephone drive power supply 16 and the power storage unit 15 is acquired at predetermined intervals by a timer built in the control unit 20.
In step S2, it is determined by comparing whether or not the acquired power supply voltage data is at a chargeable level of the telephone drive power supply 10 with a predetermined value set in advance. Returning to step S1, if the voltage is equal to or higher than the specified voltage, the process proceeds to next step S3.
In step S <b> 3, the power storage unit 15 and the telephone drive power supply 10 are brought into conduction via the switch circuit unit 17 to shift to a charging mode in which power is supplied to the telephone drive power supply 10.

In the next step S4, in conjunction with the switching to the charging mode, the mode is shifted to the energy saving mode in which only the receiving function is left and other functions are stopped, and this charging operation program is terminated to control the control unit 20. Return to the program.
Thus, when the power supply voltage acquired by the voltage sensor drops to the specified value, the cellular phone 10 is operated only by the telephone drive power supply 16 and the power of the power storage unit 15 is telephoned from the normal mode via the switch circuit unit 17. The charging mode to be supplied to the driving power source 16 can be switched.
It should be noted that switching from the charging mode to the normal mode may be appropriately performed at the user's own discretion without providing a switching button on the mobile phone body 10a.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. In the present invention, the electric power generated through the induction coil by the free rotation of the free weight is stored in the power storage unit, and the charge state is appropriately controlled by the switch circuit unit that connects between the power storage unit and the mobile phone power source. The gist is that the communication state can be stably maintained, and what belongs to this is within the scope of the right of the present invention. For example, in this embodiment, the mobile phone number that is a guide for fully charging the telephone drive power supply 16 and the power storage unit 15 is displayed on the liquid crystal display unit 18 of the mobile phone main body. In addition to the display unit, a dedicated LED display lamp may be provided as the display unit.

It is a top view of the mobile telephone which concerns on embodiment of this invention. It is side surface sectional drawing of the mobile phone. It is a block block diagram of the mobile phone. It is a model explanatory drawing of the circuit structure in an electric power generation part and an electrical storage part. It is a flowchart which switches the charge mode and normal mode of a mobile telephone device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cellular phone of embodiment 10a Cellular phone main body 11 Substrate 12 Rotating shaft 13 Free weight 14 Inductive coil 15 Power storage unit 16 Telephone drive power source 17 Switch circuit unit 18 Liquid crystal display unit 19 Operation unit 20 Control unit 21 Power generation unit

Claims (4)

An idler weight comprising a permanent magnet that is pivotally supported at one end on a rotating shaft provided in the mobile phone body and freely rotated in both directions;
An induction coil disposed opposite to the magnetic pole of the permanent magnet;
A power storage unit that rectifies and stores electric power induced in the induction coil;
A telephone driving power source charged by the power storage unit;
A switch circuit unit that connects between the power storage unit and the telephone drive power supply to turn on and off;
A cellular phone characterized by comprising:   The telephone drive power supply is provided with a voltage sensor for detecting a power supply voltage, and a charging mode for supplying power of the power storage unit to the telephone drive power supply via the switch circuit unit when the power supply voltage drops to a specified value The mobile phone according to claim 1, wherein the mobile phone is switched to   The mobile phone according to claim 2, wherein the mobile phone is shifted to an energy saving mode in which only the reception function is left and other functions are stopped in conjunction with the switching to the charging mode. The display unit of the mobile phone main body displays an indicator of the number of mobile steps required to fully charge the telephone drive power source and / or the power storage unit. The mobile phone according to item 1.

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