JP2009087648A - Portable electronic devices - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electronic device that is easy to use and can reduce running costs.
SOLUTION: A rechargeable battery 4 is used as a power source for an electronic device main body 1, and an AC adapter 7 can be connected to the electronic device main body 1 so that the rechargeable battery 4 is fully charged and can be used next time. I made it. Moreover, as the rechargeable battery 4 to be incorporated, a lithium ion secondary battery that can be rapidly charged with a current of 10 C or more is used.
[Selection] Figure 2

Description

  The present invention relates to a portable electronic device having a game function with a built-in motion sensor that detects movement in a three-dimensional direction.

  Recently, many electronic devices such as a portable game device and a mobile phone equipped with a game function can be enjoyed even when the user is away from home (for example, Patent Document 1).

  Among them, recently, a motion sensor has been built in an electronic device, and when the entire electronic device is moved, the motion sensor senses the movement and generates an output, allowing game operations according to the movement of the entire electronic device. The ones made are on sale. A game using such a portable electronic device is attracting attention as a new game device because it can be intuitively controlled, or can be operated with a conventional button or pad, or a completely new operation method.

By the way, since such a portable electronic device has no power supply from the outside as a matter of course, a power source is necessary inside the electronic device, and the built-in power source is generally a nickel metal hydride storage battery or a lithium ion secondary battery. Secondary battery. Moreover, the case of primary batteries, such as an alkaline battery, can also be considered depending on an apparatus.
JP 2007-229083 A JP-A-2005-123183

  When a primary battery, that is, a dry battery is used as a power source, there is an advantage that it generally has a higher energy density and lasts longer than a secondary battery and can be used immediately after replacement even if the battery runs out. However, batteries need to be replaced every time they run out, especially in portable electronic devices with game functions that have a large power consumption function such as a motion sensor or a liquid crystal display. Since it is necessary, the running cost is greatly increased.

  On the other hand, using a secondary battery as a power source does not require battery replacement, so the running cost is advantageous, but naturally the secondary battery cannot be used unless it is charged. The battery must be charged each time the battery becomes low. However, in general, nickel-metal hydride storage batteries and lithium ion secondary batteries cannot be rapidly charged and require 1 to 2 hours for charging. For this reason, it takes time to charge, and during this time, an electronic device cannot be used. In other words, if the battery runs out during the game, it cannot be used immediately after being replaced like a primary battery, and charging takes a long time and cannot be resumed immediately. Moreover, if it is not a dedicated game machine, the portable electronic device itself including functions other than the game cannot be used for a long time, which is very inconvenient.

  Therefore, it is conceivable to increase the capacity of the secondary battery mounted on the portable electronic device and extend the usable time. However, the battery becomes larger and the entire portable electronic device is larger and heavier. Cause the problem of loss of portability.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a portable electronic device having a game function that is excellent in usability and can reduce running costs.

  According to a first aspect of the present invention, there is provided a portable electronic device having a game function for detecting a three-dimensional movement caused by a movement of an electronic device main body using a motion sensor and operating a game using the detection signal of the motion sensor as operation information. A rechargeable battery that is provided inside the electronic device main body and can be rapidly charged with a current of 10 C or more used as a power source for supplying electric power necessary for the operation of the electronic device main body is provided.

  According to a second aspect of the present invention, in the electronic device main body according to the first aspect, the electronic device main body includes a charging unit, and the charging unit can be electrically connected to an external charging power source, and the rechargeable battery is charged in the connected state. It is characterized by doing.

  According to a third aspect of the present invention, in the electronic device main body according to the first aspect, the electronic device main body includes power generation means for generating electric power by converting kinetic energy corresponding to the movement of the electronic device main body into electric energy, The rechargeable battery is supplementarily charged with electric power of the means.

  According to a fourth aspect of the present invention, in the first aspect, the electronic device main body includes battery remaining amount display means for displaying a remaining battery amount of the rechargeable battery.

  ADVANTAGE OF THE INVENTION According to this invention, the portable electronic device which has the game function which is excellent in usability and can aim at reduction of running cost can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 shows an external view of a portable electronic device dedicated to a game according to a first embodiment of the present invention.

  In FIG. 1, reference numeral 1 denotes an electronic device main body. The electronic device main body 1 has a main body case 1a made of a flat rectangular parallelepiped. A liquid crystal display unit 2 as display means and various operation buttons 3 are arranged on the upper surface of the main body case 1a. The liquid crystal display unit 2 displays game contents and the like. The operation button 3 is composed of, for example, a button, a cross key, and the like, and performs setting of game contents displayed on the liquid crystal display unit 2, operation of game progress, and the like. In addition, the electronic device main body 1 has a main body case 1a, and the game contents can be operated by giving a movement such as shaking or tilting in an arbitrary direction according to the game contents.

  An external AC power input terminal 6a is provided on one side surface of the main body case 1a in the longitudinal direction. An AC adapter 7 described later is connected to the external AC power input terminal 6a as an external charging power source.

  A rechargeable battery 4 is housed in a battery chamber (not shown) inside the main body case 1a. Details of the rechargeable battery 4 will be described later.

  Moreover, the battery remaining amount display part 10 is arrange | positioned at the upper surface of the main body case 1a. The battery remaining amount display unit 10 displays the discharge state of the rechargeable battery 4. The light-emitting body blinks when the remaining charge amount of the rechargeable battery 4 is equal to or less than a predetermined value. Turns off. For example, an LED is used as the light emitter. In this case, for example, a blue LED may be turned on when the remaining charge amount is equal to or greater than a predetermined value, and a red LED may be turned on when the remaining battery amount falls below a predetermined value.

  FIG. 2 shows a circuit configuration of the electronic device main body 1. In FIG. 2, the same parts as those in FIG.

  In FIG. 2, reference numeral 4 denotes a rechargeable battery. The rechargeable battery 4 is provided inside the main body case 1 a and is used as a power source necessary for the operation of the electronic device main body 1. As the rechargeable battery 4, a lithium ion secondary battery capable of rapid charging is used in the present embodiment. The lithium ion secondary battery includes a container made of an exterior member made of an aluminum laminate film, a nonaqueous electrolyte housed in the container, and a lithium cobalt oxide in a positive electrode current collector made of aluminum foil housed in the container. A positive electrode carrying a positive electrode layer containing as a positive electrode active substance; and a negative electrode carrying a negative electrode layer containing lithium titanium oxide as negative electrode active substance particles in a negative electrode current collector made of aluminum foil and housed in the container. It has the structure provided.

  Here, the lithium ion secondary battery will be described in more detail. Such a lithium ion secondary battery includes a negative electrode containing lithium titanium oxide as an active substance. As disclosed in Patent Document 2, the lithium titanium oxide which is an active substance is a material capable of inserting and extracting lithium, and insertion / extraction of lithium ions is performed in the vicinity of 1.4 V to 1.7 V / Li. . For this reason, even if this secondary battery is rapidly charged with a large current, safety can be secured without precipitation of lithium as compared with the case where a carbon material is used as a conventional negative electrode active substance. In addition, since expansion and contraction associated with insertion and extraction of lithium can be suppressed, structural destruction of the negative electrode active substance can be suppressed even when rapid charging with 20 C current is repeatedly performed. As a result, a long life can be maintained even when charging and discharging are repeated.

  Specifically, it was confirmed that the lithium ion secondary battery assembled by the following method is a fast charge secondary battery that can be charged to about 80% battery capacity by charging at 20 C for 3 minutes. ing. Here, “C” is a unit representing a charge / discharge rate, and a rate that can be calculated in one hour when a constant current charge from full discharge to full charge (or from full charge to full discharge) is calculated is expressed as 1C. In the case of 1/10 hour, it is expressed as 10C. Therefore, for example, 20C charging requires 20 times as much current as 1C charging.

<Production of negative electrode>
The active substance is lithium titanate (Li ₄ Ti ₅ O ₁₂ ) powder having an average particle diameter of 5 μm and a Li storage potential of 1.55 V (vs. Li / Li ⁺ ), and carbon having an average particle diameter of 0.4 μm as a conductive agent. The powder and polyvinylidene fluoride (PVdF) as a binder were blended in a weight ratio of 90: 7: 3, and these were dispersed in an n-methylpyrrolidone (NMP) solvent to prepare a slurry.

  In addition, the laser diffraction type particle size distribution measuring apparatus (Shimadzu Corporation model number SALD-300) was used for the measurement of the particle diameter of an active substance. First, about 0.1 g of a sample was put in a beaker or the like, and then a surfactant and 1 to 2 mL of distilled water were added and stirred sufficiently, and poured into a stirred water tank. The light intensity distribution was measured 64 times at intervals of 2 seconds, the particle size distribution data was analyzed, and the particle size (D50) having a cumulative frequency distribution of 50% was defined as the average particle size.

Next, an aluminum foil (purity: 99.99%) having a thickness of 10 μm was applied to the negative electrode current collector, dried, and then pressed to prepare a negative electrode having an electrode density of 2.4 g / cm ³ .

<Preparation of positive electrode>
Lithium cobalt oxide (LiCoO ₂ ) as an active substance, graphite powder as a conductive material, and polyvinylidene fluoride (PVdF) as a binder are blended in a weight ratio of 87: 8: 5, and these are mixed with n -A slurry was prepared by dispersing in a methylpyrrolidone (NMP) solvent. The slurry was applied to an aluminum foil (purity 99.99%) having a thickness of 15 μm, dried, and pressed to prepare a positive electrode having an electrode density of 3.5 g / cm ³ .

<Assembly of secondary battery>
As a forming material for the container (exterior member), an aluminum-containing laminate film having a thickness of 0.1 mm was prepared. The aluminum layer of this aluminum-containing laminate film had a thickness of about 0.03 mm. Polypropylene was used as the resin for reinforcing the aluminum layer. A container (exterior member) was obtained by laminating the laminate film by heat sealing.

  Next, a positive electrode terminal was electrically connected to the positive electrode, and a negative electrode terminal was electrically connected to the negative electrode. A separator made of a polyethylene porous film having a thickness of 12 μm was coated in close contact with the positive electrode. The positive electrode covered with the separator was overlapped with the negative electrode so as to face each other, and these were wound in a spiral shape to produce an electrode group. This electrode group was pressed into a flat shape. An electrode group formed into a flat shape was inserted into a container (exterior member).

LiBF ₄ , which is a lithium salt, is dissolved in an organic solvent in which ethylene carbonate (EC) and γ-butyllactone (GBL) are mixed at a volume ratio (EC: GBL) of 1: 2 to obtain a liquid. A non-aqueous electrolyte obtained by preparing a non-aqueous electrolyte was poured into the container and sealed by heat sealing of the aluminum laminate film opening with the positive and negative terminals exposed to the outside. Assembled.

  FIGS. 3A and 3B are external views of the lithium ion secondary battery assembled in this manner. For example, a rectangular battery body 411 having an outer diameter of 5.5 × 65 × 50 mm is shown in FIGS. The positive electrode terminal 412 and the negative electrode terminal 413 are led out from one end of the battery main body 411, respectively. Such a secondary battery has a fully charged voltage of 2.8 V, a constant current and constant voltage charge at 200 mA to 2.8 V, and a capacity of about 1000 mAh when discharged to 2.0 V with a 1000 mA constant current discharge. is there. The secondary battery can be rapidly charged with a current of 10 C or more. Here, as described above, 1 C represents a current value that can be calculated in one hour when a constant current charge is performed from the discharge state to the charge, and corresponds to 1000 mA in the above-described secondary battery. Therefore, being able to rapidly charge with a current of 10 C or more means that it can be charged with a current (1000 × 10) mA 10 times that of 1C. As a result, when a 10A-2.8V constant current / constant voltage charge (10C charge) is performed from a discharged state (discharged to 2.0V by 1000 mA continuous discharge), the capacity of 80% (800 mAh) or more is reached within 5 minutes. In addition, with 20A-2.8V constant current constant voltage charging (20C charging), a capacity of 80% or more can be charged within 3 minutes. During this rapid charging, problems such as abnormal heat generation do not occur. In other words, the secondary battery here can be rapidly charged, which is difficult with conventional nickel metal hydride storage batteries or lithium ion secondary batteries.

  The rechargeable battery 4 is provided with a monitoring protection circuit 5 as monitoring protection means. The monitoring protection circuit 5 monitors the state of the rechargeable battery 4 and drives a switch (not shown) according to the monitoring result to stop charging / discharging of the rechargeable battery 4. In this case, the monitoring protection circuit 5 monitors overcharge, overdischarge and overcurrent of the rechargeable battery 4. When the charging voltage of the rechargeable battery 4 is within a predetermined value range, charging / discharging of the rechargeable battery 4 is allowed. When the charging voltage of the rechargeable battery 4 exceeds a predetermined value, it is determined that the battery is overcharged and the switch (not shown) ) Is released to stop the charging of the rechargeable battery 4, and when the charging voltage of the rechargeable battery 4 falls below a predetermined value, it is determined that the battery is overdischarged and the switch (not shown) is opened to open the rechargeable battery 4. Stop the discharge. Further, when the discharge current of the rechargeable battery 4 or the charge current exceeds a predetermined value, it is determined as an overcurrent, and the switch (not shown) is opened to stop the discharge of the rechargeable battery 4. This prevents the rechargeable battery 4 from being overcharged and generating gas due to the decomposition of the electrolyte, thereby increasing the pressure inside the battery and preventing leakage, and the rechargeable battery 4 is in an overdischarged state. This prevents the battery performance from deteriorating. Such a monitoring protection circuit 5 is modularized and connected to the rechargeable battery 4. The monitoring protection circuit 5 may monitor at least one of overcharge, overdischarge, and overcurrent of the rechargeable battery 4.

  A charging control unit 6 is connected to the rechargeable battery 4 as a charging means. The charging control unit 6 charges the rechargeable battery 4 and is connected to the external AC power input terminal 6a described above. In this case, the AC adapter 7 is electrically connected to the external AC power input terminal 6a as an external charging power source. The AC adapter 7 has an AC / DC converter 8. The AC / DC converter 8 converts AC power of a 100V AC power source (commercial power source) 9 into DC power, and this DC power is supplied to the charging controller 6 via the external AC power source input terminal 6a. 4 is supplied as charging power.

  A built-in power generation unit 11 is connected to the charge control unit 6 as power generation means. As shown in FIG. 4, the built-in power generation unit 11 includes a cylindrical member 111 made of an insulating material. The coil 112 is wound around the outer peripheral surface of the cylindrical member 111, and is permanent along the hollow portion of the coil 112. It has a power generation mechanism in which the magnet 113 is movably arranged. In this power generation mechanism, when the entire cylindrical member 111 is swung, the permanent magnet 113 reciprocates in the directions of the arrows a and b along the hollow portion of the coil 112, whereby the magnetic flux passing through the coil 112 changes, and the coil An electromotive force is generated at 112.

  The output of the built-in power generation unit 11 (electromotive force of the coil 112) is supplied to the charging control unit 6 as charging power for the rechargeable battery 4. In this case, the polarity of the electric power output from the built-in power generation unit 11 is reversed depending on the moving direction of the permanent magnet 113 that moves through the hollow portion of the coil 112, that is, the direction indicated by the arrow a or b. For this reason, the output power of the built-in power generation unit 11 is converted into DC power through the rectifier circuit 61 and supplied to the charging control unit 6. This rectifier circuit 61 uses what was integrated in the charge control part 6 integrally.

  The amount of power generated by the built-in power generation unit 11 is not so large, and an amount sufficient to cover the power required by the portable electronic device main body 1 as a whole cannot be obtained. Since supplementary charging of the rechargeable battery 4 can be performed, there is an effect that the use time until the rechargeable battery 4 runs out can be extended.

  The built-in power generation unit 11 may be configured as shown in FIG. In this case, the power generation mechanism integrally has a rotating gear 122 on the central shaft 121 a of the fan-shaped rotating weight 121, and transmits the rotation of the rotating gear 122 to the rotor 124 via the speed increasing gear 123. The rotor 124 is composed of a high-performance permanent magnet. A stator 126 around which a coil 125 is wound is disposed around the rotor 124. In such a power generation mechanism, when the rotating weight 121 rotates in the direction of the arrow c in the figure, this rotation is transmitted to the rotor 124 via the rotating gear 122 and the speed increasing gear 123, and the rotor 124 rotates to rotate the stator 126. The passing magnetic flux changes, and an electromotive force is generated in the coil 125. Even with the configuration described above, the same effect as described in FIG. 4 can be obtained.

  Further, the built-in power generation unit 11 may be configured as shown in FIG. In this case, the power generation mechanism includes a cylindrical member 131 made of an insulating material, piezoelectric elements 132 and 133 are provided at both opening ends of the cylindrical member 131, and a moving member 134 is disposed in a hollow portion of the cylindrical member 131. Yes. In such a power generation mechanism, when the entire cylindrical member 131 is swung, the moving member 134 reciprocates along the hollow portion of the cylindrical member 131 in the directions indicated by the arrows d and e and collides with the piezoelectric elements 132 and 133. The piezoelectric elements 132 and 133 are deformed by this collision, thereby generating an electromotive force. Even with the configuration described above, the same effect as described in FIG. 4 can be obtained.

  Such a built-in power generation unit 11 generates electric power by converting kinetic energy corresponding to the movement of the electronic device main body 1 into electric energy. As long as both do not cause a problem, a configuration other than the above-described configuration can be applied.

  Returning to FIG. 2, the control unit 14 is connected to the rechargeable battery 4. The control unit 14 controls the entire electronic device body 1 and is connected to the liquid crystal display unit 2, the operation buttons 3, the motion sensor 15, and the game storage unit 16. The liquid crystal display unit 2 and the operation button 3 are as described above. The game content is displayed on the liquid crystal display unit 2, and the game content displayed on the liquid crystal display unit 2 by the button of the operation button 3 or the cross key is set. And the game progress. The motion sensor 15 detects, for example, three-axis directions that are perpendicular to each other, that is, three-dimensional movements caused by the movement of the electronic device body 1. The game storage unit 16 stores game software. The game storage unit 16 is prepared for each game software, and is set in the electronic device main body 1 from the outside. Of course, the game storage unit 16 may be provided in the electronic device main body 1 from the beginning.

  The control unit 14 includes a game control unit 141 and a battery remaining amount monitoring unit 142. The game control unit 141 executes the game software in the game storage unit 16 to display the game contents on the liquid crystal display unit 2, and the settings and operation information input from the operation buttons 3 and the three-dimensional detected by the motion sensor 15. The game content is controlled by operation information based on the movement of the game. The battery remaining amount monitoring means 142 monitors the discharge state of the rechargeable battery 4, and when the remaining charge amount falls below a predetermined value, the light emitter of the battery remaining amount display unit 10 blinks and continues to be lit during charging. Goes off.

  Next, the operation of the embodiment configured as described above will be described.

  First, the user connects the AC adapter 7 to the external AC power input terminal 6 a of the electronic device body 1 when the light emitter of the battery remaining amount display unit 10 is blinking. Then, DC power is supplied from the AC power source 9 to the charging control unit 6 via the AC / DC converter 8, and the rechargeable battery 4 is charged to full charge. Thereafter, it is confirmed that the rechargeable battery 4 is fully charged because the light emitter of the battery remaining amount display unit 10 is turned off. When it is confirmed that the rechargeable battery 4 is fully charged, the AC adapter 7 is disconnected from the external AC power input terminal 6a.

  In this state, when a power switch (not shown) of the electronic device main body 1 is turned on, the game function can be used. In this case, the game control unit 141 executes the game software in the game storage unit 16 to display the game content on the liquid crystal display unit 2. Then, the user operates the operation button 3 while holding the electronic device main body 1 with his / her hand, and swings the electronic device main body 1 in an arbitrary direction to generate a motion detection signal from the motion sensor 15. . The operation signal of the operation button 3 and the detection signal of the motion sensor 15 are reflected in the game content by the game control means 141 of the control unit 14, and a game operation is performed.

  On the other hand, the remaining battery charge monitoring unit 142 monitors the remaining battery charge of the rechargeable battery 4. When the remaining battery level falls below a predetermined value, the light emitter of the remaining battery level display unit 10 is blinked. When the user confirms the display of the battery remaining amount display unit 10, the user inserts the AC adapter 7 into the external AC power input terminal 6a and charges the rechargeable battery 4 to full charge again for the next use.

  Therefore, in this way, the rechargeable battery 4 is used as the power source of the electronic device main body 1, the AC adapter 7 can be connected to the electronic device main body 1, the rechargeable battery 4 is charged to full charge, Enabled the use of. Moreover, as the rechargeable battery 4 to be incorporated, a lithium ion secondary battery that can be rapidly charged with a current of 10 C or more is used. As a result, the rechargeable battery 4 can be repeatedly charged simply by connecting the AC adapter 7, and the rechargeable battery 4 can be quickly charged in a short time of about several minutes, thereby realizing a portable electronic device with excellent usability. When enjoying a game with this kind of portable electronic device, even if the battery runs out during the game, if you charge it for a short time, you can return to the game and enjoy the game continuously . Furthermore, since the rechargeable battery 4 is used, it is not necessary to replace the battery even when the battery runs out, so that the running cost can be reduced.

  In addition, if the rechargeable battery 4 can be charged in a short time, an operation in which the rechargeable battery 4 is frequently charged can be considered. In this case, it is possible to use the rechargeable battery 4 having a small battery capacity and carry it. It is possible to reduce the cost as well as to reduce the size and weight of the electronic device. These can be realized by using the rechargeable battery 4 capable of rapid charging.

  Further, the built-in power generation unit 11 is arranged inside the electronic device main body 1 using the characteristics of the game function using the motion sensor 15, and the user shakes and tilts the electronic device main body 1 with any hand. By operating the game to give a movement such as, the built-in power generation unit 11 generates power, and the rechargeable battery 4 is supplementarily charged with the generated power. As a result, the rechargeable battery 4 can be supplementarily charged little by little during use of the portable electronic device, so that the usable time until the rechargeable battery 4 runs out can be extended, and the time for enjoying the game can be increased. You can continue further. In addition, the built-in power generation unit 11 is activated by the movement of the portable electronic device even during the game. Therefore, it is possible to supplementarily charge the rechargeable battery 4 while the portable electronic device is being moved in a bag or the like, thereby extending the usable time.

  Further, the electronic device main body 1 is provided with a battery remaining amount display unit 10 for displaying a discharge state of the rechargeable battery 4, so that the discharge state of the rechargeable battery 4 can be confirmed at a glance while using the portable electronic device. Therefore, it is possible to avoid the situation where the remaining battery level of the rechargeable battery 4 becomes zero and the portable electronic device becomes unusable.

  In addition, this invention is not limited to the said embodiment, In the implementation stage, it can change variously in the range which does not change the summary. For example, in the above-described embodiment, the game dedicated machine has been described as the portable electronic device. However, the present invention can also be applied to a power source of another electronic device that is not a game dedicated machine such as a mobile phone equipped with a game function. In the case of an electronic device having a game function instead of such a game-dedicated machine, even if other functions become unusable due to battery consumption due to the game, it can be restored with a short charge.

  In addition, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and is described in the column of the effect of the invention. If the above effect is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.

1 is a diagram showing an external appearance of a portable electronic device according to a first embodiment of the present invention. 1 is a diagram showing a circuit configuration of a portable electronic device according to a first embodiment. The figure which shows the front and side of a rechargeable battery used for 1st Embodiment. The figure which shows schematic structure of the built-in electric power generation part used for 1st Embodiment. The figure which shows schematic structure of the other built-in electric power generation part used for 1st Embodiment. The figure which shows schematic structure of the other built-in electric power generation part used for 1st Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Portable electronic device main body, 1a ... Main body case 2 ... Liquid crystal display part, 3 ... Operation button, 6a ... Input terminal for external AC power supply 4 ... Rechargeable battery, 411 ... Battery main body 412 ... Positive electrode terminal, 413 ... Negative electrode terminal 5 DESCRIPTION OF SYMBOLS ... Monitoring protection circuit, 6 ... Charge control part 61 ... Rectification circuit, 7 ... AC adapter 8 ... AC / DC converter, 9 ... AC power supply 10 ... Battery remaining amount display part, 11 ... Built-in power generation part 14 ... Control part, 141 ... Game control justice means 142 ... Battery remaining amount monitoring means, 15 ... Motion sensor 16 ... Game storage unit, 111 ... Cylindrical member 112 ... Coil, 113 ... Permanent magnet 121 ... Rotating weight, 121a ... Central shaft 122 ... Rotating gear, 123 ... Speed increasing gear 124 ... Rotor, 125 ... Coil, 126 ... Stator 131 ... Cylindrical member, 132.133 ... Piezoelectric element 134 ... Moving member

Claims (4)

In a portable electronic device having a game function of detecting a movement in a three-dimensional direction caused by the movement of the electronic device main body with a motion sensor and operating a game using the detection signal of the motion sensor as operation information,
A portable electronic device comprising a rechargeable battery that is provided inside the electronic device main body and can be rapidly charged with a current of 10 C or more used as a power source for supplying electric power necessary for the operation of the electronic device main body. 2. The portable electronic device according to claim 1, wherein the electronic device main body includes a charging unit, and the charging unit can be electrically connected to an external charging power source and charges the rechargeable battery in the connected state. . The electronic device main body has power generation means for generating electric power by converting kinetic energy corresponding to the movement of the electronic device main body into electric energy, and supplementarily charging the rechargeable battery with the electric power of the power generation means. The portable electronic device according to claim 1, wherein: The portable electronic device according to claim 1, wherein the electronic device main body includes a remaining battery amount display unit that displays a remaining battery amount of the rechargeable battery.

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