JP2008236887A - Charger for portable device, charging control method of charger for portable device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a charger for a portable device, capable of supplying power in a versatile way irrespective of the manufacturer or model of the portable device, and to provide a charging control method and a program of the charger for a portable device. <P>SOLUTION: The charger 3 for a portable device utilizes electromagnetic induction to charge a portable device 2 provided with a battery 14, a charging coil 12, and a device specification storage section for storing the device specification including its own model code. The charger 3 is provided with a power supply coil 22 for supplying power to the portable device 2, a charging mode storage section 39 for storing a predetermined charging mode for each model code of the portable device 2, a device specification acquiring means for performing communication with the portable device 2 via the charging coil 12 and the power supply coil 22 to acquire the device specifications from the portable device 2, a charging mode setting means for referring to the charging mode storage section 39 and setting a charging mode corresponding thereto on the basis of the acquired device specifications, and a charging control means 33 for charging the portable device at the set charging mode. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a charging device for a portable device that supplies power to the portable device, a charging control method for the charging device for the portable device, and a program.

Conventionally, as a charging device for this type of portable device, a mounting portion for mounting the portable device, a power supply terminal that can contact the charging terminal of the mobile device, and a plug that is connected to the power supply terminal and into which a charging adapter is inserted. What you have is known. In this portable device charging device, when an adapter is inserted into a plug and the portable device is attached to the attachment portion, the charging terminal of the portable device and the power supply terminal of the charging device for the portable device are electrically connected to charge the portable device. (See Patent Document 1).
JP 2004-320843 A

  However, the portable device charging apparatus has a problem that power cannot be supplied to the portable device when a contact failure occurs between the charging terminal of the portable device and the power supply terminal of the portable device charging device. In order to solve this problem, a contactless charging method using an electromagnetic induction method can be considered in place of the contact charging method using the charging terminal of the portable device and the power supply terminal of the charging device for the portable device. Since the charging method of the portable device varies depending on the model, the portable device charging device cannot be used for general purposes.

  Accordingly, it is an object of the present invention to provide a charging device for a portable device, a charging control method for the charging device for a portable device, and a program capable of supplying power universally regardless of the manufacturer and model of the portable device.

  The charging device for a portable device of the present invention is a portable device including a battery, a charging coil for receiving power by electromagnetic induction, and a device specification storage unit that stores device specifications including its model code. A charging device for a portable device that uses electromagnetic induction to charge, a power supply coil that supplies power to the portable device via a charging coil, and a charging mode that stores a predetermined charging mode for each model code of the portable device Referring to the storage unit, the communication unit that communicates with the portable device via the charging coil and the power supply coil, the device specification acquiring unit that acquires the device specification from the portable device by the communication unit, and the charging mode storage unit. A charging mode setting means for setting a corresponding charging mode based on the device specifications, and a charging control means for charging the portable device in the set charging mode. To.

  A charging control method for a charging device for a portable device of the present invention includes a battery, a charging coil for receiving power by electromagnetic induction, and a device specification storage unit that stores a device specification including its own model code. A charging control method for a charging device for a portable device, comprising: a power supply coil that supplies power to the device via a charging coil; and a charging mode storage unit that stores a predetermined charging mode for each model code of the portable device The portable device charging device communicates with the portable device via the charging coil and the power supply coil, acquires the device specification from the portable device, and refers to the charging mode storage unit to acquire the device specification. And a step of setting a corresponding charging mode and a step of charging the portable device in the set charging mode.

  According to these configurations, power is supplied to the portable device in a non-contact manner using electromagnetic induction while the portable device is placed on the portable device charging device, so that contact failure does not occur reliably. The portable device can be powered. Moreover, the charging device for portable devices stores the charging mode corresponding to the device specifications for each manufacturer and model, and is charged in the corresponding charging mode based on the device specifications acquired by communication with the portable device. Therefore, even if the charging method of the portable device differs for each manufacturer or model, the portable device charging device can be used for general purposes.

  In this case, the apparatus further includes a charging target determination unit that determines whether or not the portable device is a charging target device based on whether or not the charging mode corresponding to the acquired device specification is stored in the charging mode storage unit. ,preferable.

  According to this configuration, failure of the portable device can be prevented by supplying no power to the portable device that is determined not to be charged.

  In this case, it is preferable to further include an error notification unit that notifies an error when the charging target determination unit determines that the charging target is not a charging target.

  According to this configuration, it is possible to notify the owner of the portable device that charging cannot be performed. The error notification may be an audio notification such as an electronic sound, or may be notified by providing a display on the charging device for portable device and displaying on the display.

  In these cases, it is preferable that the device specifications further include remaining amount data indicating the remaining amount of the battery, and the charging control unit determines the charging time based on the remaining amount data.

  According to this structure, the charging device for portable devices can charge with appropriate charging time based on the battery remaining amount acquired from the portable device. For this reason, a battery does not deteriorate by overcharge.

  A program according to the present invention causes a computer to execute each step in the charging control method for the portable device charging device.

  According to this configuration, it is possible to provide a program that can supply power for a general purpose regardless of the manufacturer and model of the portable device.

  Hereinafter, a portable device charging apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. The present invention employs a non-contact charging function using electromagnetic induction in a charging device for a portable device, and has a positioning structure of a secondary coil provided in the portable device and a primary coil provided in the charging device for the portable device. By mounting, power is efficiently supplied to the portable device. In addition, the mobile device charging device can be used universally even when the charging conditions of the mobile device differ depending on the manufacturer and model of the mobile device. In the present embodiment, a mobile phone will be described as an example of the mobile device.

  First, the system configuration of the charging system 1 of the mobile phone 2 (mobile device) will be described with reference to the system configuration diagram of FIG. The charging system 1 includes a mobile phone 2 having a communication function, and a charging device 3 (mobile device charging device) that performs wireless communication with the mobile phone 2 while holding the mobile phone 2. Then, the charging device 3 acquires device specifications from the mobile phone 2 by wireless communication, specifies a charging condition corresponding to the mobile phone 2, and charges based on the charging condition. At this time, the charging device 3 is connected to the external power source 4 and supplies the power acquired from the external power source 4 to the mobile phone 2 placed on the upper surface using electromagnetic induction. The power supply using electromagnetic induction means that an AC magnetic field is generated in the vicinity of the primary coil by an AC current passed through the primary coil, an AC voltage is induced in the secondary coil, and this is rectified to 2 It means charging the next battery. That is, the charging device 3 has a power supply coil 22 corresponding to a primary coil, and the mobile phone 2 has a charging coil 12 corresponding to a secondary coil (see FIG. 5). The mobile phone 2 is supplied with power by generating a magnetic field.

  Communication between the charging device 3 and the mobile phone 2 is performed using the above-described electromagnetic induction. That is, the power supply coil 22 of the charging device 3 and the charging coil 12 of the mobile phone 2 can also be used as a communication interface, which is a simple device configuration compared to a configuration in which a separate wireless communication interface is provided. .

  Next, with reference to the perspective view of FIG. As shown in FIG. 2A, the mobile phone 2 is formed in a thin rectangular plate shape, and has a display 11 in the center of the front. The display 11 displays the current date and time, an antenna mark indicating the radio wave status, and a battery mark indicating the remaining battery level. The user can make the timing of charging by visually recognizing the battery mark. Further, as shown in FIG. 2B, a charging coil 12 and a battery 14 serving as a driving source for displaying the display 11 are disposed inside the mobile phone 2. The charging coil 12 is a spiral flat coil, and both ends are connected to the battery 14 via an internal circuit. The back surface of the mobile phone 2 is formed flat, and an engagement hole 13 (positioning recess) is formed on the same axis as the center of the charging coil 12, and is used for positioning with the charging device 3 (details). Will be described later).

  As shown in FIG. 3, the charging device 3 includes a device main body 21 on which the mobile phone 2 is placed, and two power supplies that are held inside the device main body 21 and supply power to the mobile phone 2 using electromagnetic induction. A coil 22. The two power supply coils 22 are spiral flat coils like the charging coil 12, and are arranged side by side in the apparatus main body 21. An engagement protrusion 23 (positioning protrusion) that engages with the engagement hole 13 of the mobile phone 2 is formed on the surface of the apparatus main body 21 coaxially with the center of the power supply coil 22. A positioning mark 24 is written so as to surround the protrusion 23. That is, when positioning the mobile phone 2 to the charging device 3, the positioning mark 24 is used as a guide, and the engaging hole 13 of the mobile phone 2 is engaged with the engaging protrusion 23 of the charging device 3. The center of the power supply coil 22 of the charging device 3 and the center of the charging coil 12 of the mobile phone 2 are accurately positioned. Note that the shapes of the engagement holes 13 and the engagement protrusions 23 are not limited to circular recesses and columnar shapes as shown in the figure, and may be any shapes as long as they are not misaligned.

  Further, inside the apparatus main body 21, a control unit 25 that is connected to the external power source 4 and is configured by electronic components for controlling each part of the charging device 3 is accommodated. The power supply coils 22 are electrically connected to both ends via the assembled wiring 26. That is, the current output from the external power supply 4 is output to the power supply coil 22 via the control unit 25 and the wiring 26.

  The positioning mark 24 is used as a guide when positioning the engagement hole 13 of the mobile phone 2 and the engagement protrusion 23 of the charging device 3, and corresponds to the power supply coil 22 held inside the apparatus main body 21. , Which is written on the surface of the apparatus main body 21, and includes four L-shaped marks 27 for aligning the four corners of the mobile phone 2. In this case, the four L-shaped marks 27 indicating the four corners of the mobile phone 2 are written on the apparatus main body 21 with an interval corresponding to the average length of the long side and the short side of the general mobile phone 2. Even if the model of the mobile phone 2 is different, the position of the engagement protrusion 23 is easily specified. In addition, the size (thickness) of each L-shaped mark 27 is described in a size that does not affect the positioning accuracy and that is visible to the operator. When the mobile phone 2 is placed on the charging device 3, the four corners of the mobile phone 2 are aligned with the four L-shaped marks 27, and the engagement holes 13 of the mobile phone 2 are aligned with the engagement protrusions 23 of the charging device 3. Move closer to. Then, it is slid so as to search for an engagement position between the engagement hole 13 and the engagement protrusion 23 to perform positioning. By doing in this way, positioning with the center of the charging coil 12 incorporated in the mobile telephone 2 and the center of the electric power supply coil 22 hold | maintained at the charging device 3 can be performed. Note that the positioning mark 24 may be configured by representing two L-shaped marks 27 diagonally.

  Further, the positioning mark 24 may be an X mark 28 expressed so as to intersect two straight lines at the position of the engaging protrusion 23 as shown in FIG. The angle formed by the two straight lines is based on the average size of the general mobile phone 2. That is, the two straight lines of the X mark 28 represent diagonal lines connecting the four corners of the mobile phone 2. When the mobile phone 2 and the charging device 3 are aligned, the four corners of the mobile phone 2 are aligned so as to overlap two straight lines, and the engagement holes 13 of the mobile phone 2 are aligned with the engagement protrusions 23 of the charging device 3. Move closer to. As described above, the X mark 28 has the engagement protrusion 23 formed at the intersection of two straight lines. Therefore, even when the engagement protrusion 23 is hidden by the mobile phone 2, the position of the engagement protrusion 23 is specified. It is easy.

  Further, for example, as shown in FIG. 4B, a circular mark 29 surrounding the engaging protrusion 23 as the center may be used. The circular mark 29 is written on the surface of the apparatus main body 21 with the average length of the long side of the general mobile phone 2 as the diameter. When aligning the mobile phone 2 and the charging device 3, the mobile phone 2 and the charging device 3 are positioned so as to be within the circular mark 29, and the engaging hole 13 of the mobile phone 2 is brought close to the engaging protrusion 23 of the charging device 3. In this way, by using the circular mark 29, the cellular phone 2 can be aligned regardless of the direction of 360 °. Regardless of the shape of the mobile phone 2, the positioning mark 24 may have any notation as long as the mobile phone 2 and the charging device 3 can be aligned.

  In this embodiment, the engagement hole 13 is formed in the mobile phone 2 and the engagement protrusion 23 is formed in the charging device 3. However, the engagement protrusion 23 is formed in the mobile phone 2 and engaged with the charging device 3. The hole 13 may be formed.

  Next, the control configuration of the charging device 3 and the mobile phone 2 will be described with reference to the control configuration diagram of FIG. First, the control configuration of the charging device 3 will be described.

  The charging device 3 includes an AC / DC converter 31, a safety circuit 32, a charging controller 33 (charging control means), a DC / AC inverter 34, a power supply coil 22, a communication controller 35 (communication means), and a charging device memory 36. Yes. The control unit 25 is configured by the AC / DC converter 31, the safety circuit 32, the charge controller 33, the DC / AC inverter 34, the communication controller 35, and the charging device memory 36.

  The AC / DC converter 31 converts the alternating current output from the external power supply 4 into a direct current and outputs the direct current to the safety circuit 32.

  The safety circuit 32 is configured by incorporating a thermistor, and monitors whether or not the direct current output from the AC / DC converter 31 is an overcurrent from the detected temperature detected by the thermistor. In the case of overcurrent, output of current is stopped.

  The charge controller 33 controls charging of the mobile phone 2 and includes an ON / OFF switch for controlling power supply / stop for the mobile phone 2 and an LED lamp for notifying that power is being supplied. ing. When supplying power to the mobile phone 2, the charge controller 33 turns on the ON / OFF switch and supplies power to the mobile phone 2.

  The DC / AC inverter 34 converts a direct current into an alternating current and outputs the alternating current to the power supply coil 22.

  The power supply coil 22 generates an alternating magnetic field when the alternating current output from the DC / AC inverter 34 flows.

  The communication controller 35 controls communication between the charging device 3 and the mobile phone 2, requests the mobile phone 2 to transmit the device specifications and the remaining battery power, and sends the device specifications and the remaining battery power from the mobile phone 2. Is acquired (device specification acquisition means).

  The charging device memory 36 includes a device specification storage unit 37 that stores the device specification acquired by the communication controller 35, a battery remaining amount storage unit 38 that stores the remaining battery amount acquired by the communication controller 35, and a plurality of types of portable terminals. Each model has a charging mode storage unit 39 that stores charging modes having different charging conditions. As shown in FIG. 6, the charging mode storage unit 39 stores the model name, model code, battery capacity, charging voltage, and charging method in association with each model. For example, for model A, model code “00A”, battery capacity “880 mAh”, charging voltage “4.2 V”, charging method “constant voltage constant current method”, and for model D, model code “00D”. ”, Battery capacity“ 1200 mAh ”, charging voltage“ 4.2 V or more ”, and charging method“ pulse charging method ”.

  Then, the charge controller 33 reads the device specification acquired by the communication controller 35 from the mobile phone 2 from the device specification storage unit 37, and refers to the charge mode storage unit 39 to determine whether or not the device is a charge target device (charge target). Discrimination means). If the model corresponding to the charging mode storage unit 39 is not stored, it is determined that the device is not a charging target device, an error is notified (error notification means), and the ON / OFF switch is turned OFF. If the model corresponding to the charging mode storage unit 39 is stored, it is determined that the device is a charging target device, and the corresponding charging mode is set (charging mode setting means). In this way, failure is prevented by supplying power only to the mobile phone 2 determined to be a charging target device.

  Further, the charge controller 33 reads the remaining battery level acquired from the mobile phone 2 by the communication controller 35 from the remaining battery level storage unit 38, and based on the remaining battery level and the charging capacity stored in the charging mode storage unit 39, Calculate the charging time. Then, the charging device 3 turns on the ON / OFF switch and starts supplying power to the mobile phone 2 until the charging time elapses in the set charging mode. In this way, the battery is prevented from deteriorating due to overcurrent by supplying power with an appropriate charging time.

  The cellular phone 2 includes a charging coil 12, a rectifier circuit 41, a communication processing unit 42, a voltage regulator unit 43, a charging control unit 44, a battery 14, a portable memory 45, and a device control unit 46.

  The charging coil 12 induces an alternating current by the alternating magnetic field generated by the power supply coil 22. Then, the induced alternating current is output to the rectifier circuit 41.

  The rectifier circuit 41 stores the electric charge in the battery 14 based on the conversion result obtained by converting the alternating current generated in the charging coil 12 into the direct current.

  The battery 14 is a rechargeable battery, and supplies power to each part of the mobile phone 2 based on the electric charge stored in the battery 14.

  The voltage regulator unit 43 constantly monitors the current output from the battery 14 and performs control so that a constant output current is maintained.

  The charge control unit 44 includes a circuit including a resistor unit that detects a charging current and a resistor unit that detects a discharge current, and an arithmetic unit that calculates the remaining battery level from the current values detected by both resistor units. Yes. The charge control unit 44 periodically transmits the remaining battery level calculated by the calculation unit to the portable memory 45.

  The mobile memory 45 stores the device specifications of the mobile phone 2 and the remaining battery level transmitted from the charge control unit 44.

  The device control unit 46 reads the remaining battery level stored in the portable memory 45 and displays it on the display 11 as a battery mark. Further, the current date and time are displayed on the display 11 by a built-in timer, and the radio wave status is displayed on the display 11 as an antenna mark by an antenna.

  The communication processing unit 42 communicates with the charging device 3, and based on the device specification and the battery remaining amount transmission request from the charging device 3, the charging unit 3 stores the device specification and the remaining battery amount stored in the portable memory 45. 3 to send.

  Next, the charging process when the mobile phone 2 is fixed to the charging device 3 will be described with reference to the flowchart of FIG.

  First, the user places the mobile phone 2 on the charging device 3 with the positioning mark 24 as a guide, engages the engaging hole 13 of the mobile phone 2 with the engaging protrusion 23 of the charging device 3, and the power supply coil 22. And the center of the charging coil 12 are positioned (S01). Then, an alternating current is output from the external power supply 4 to the power supply coil 22, and an alternating magnetic field is generated in the vicinity of the power supply coil 22 (S02). An alternating current is induced in the charging coil 12 of the mobile phone 2 by the generated AC magnetic field (S03), and communication is established between the charging device 3 and the mobile phone 2 (S04). When communication is established between the charging device 3 and the mobile phone 2, the charging device 3 requests the mobile phone 2 to transmit the device specifications and the remaining battery level (S05). The charging device 3 refers to the charging mode storage unit 39 based on the received device specifications and determines whether or not the placed mobile phone 2 is a charging target device (S06). If the charging device 3 determines that the mobile phone 2 is not a charging target device (S06: No), the charging device 3 notifies an error (S07). On the other hand, if it is determined that the mobile phone 2 is a device to be charged (S06; Yes), the charging mode storage unit 39 is referred to set the corresponding charging mode (S08). Then, the charging device 3 calculates the charging time based on the received remaining battery level and the charging capacity stored in the charging mode storage unit 39 (S09), and supplies power to the mobile phone 2 until the charging time elapses. Perform (S10). As described above, since charging can be performed in a corresponding charging mode based on the device specifications acquired by communication with the mobile phone 2, even if the charging method of the mobile device differs for each manufacturer or model, The charging device 3 can be used.

  Then, the charging device 3 which concerns on the modification of this invention is demonstrated. The charging device 3 according to the modification of the present invention has a click ball 51 that can be projected and retracted from the surface of the apparatus main body 21 instead of the engaging protrusion 23 that protrudes from the surface of the apparatus main body 21 as in the previous embodiment. (Engagement member) is provided. Hereinafter, the charging device 3 according to the modification will be described with a focus on differences from the previous embodiment.

  As shown in FIG. 8, the click ball 51 has a substantially upper half portion of the click ball 51 protruding from the surface of the apparatus main body 21 together with a biasing spring 52 (biasing means) that biases the click ball 51 upward. It is accommodated in the accommodation hole 53. The accommodation hole 53 is formed coaxially with the center of the power supply coil 22 as in the previous embodiment. Then, the mobile phone 2 is positioned by sliding the surface of the apparatus main body 21 while pushing the click ball 51, and is positioned at the position where the engagement hole 13 of the mobile phone 2 and the click ball 51 are engaged. As described above, the click ball 51 is configured to be able to protrude and retract from the surface of the apparatus main body 21 by the urging spring 52, and thus can be positioned without damaging the back surface of the mobile phone 2.

  According to the above configuration, power is supplied to the mobile device in a non-contact manner using electromagnetic induction while the mobile phone 2 is mounted on the charging device 3, so that the mobile phone can be reliably carried without contact failure. The telephone 2 can be powered. Moreover, since the center of the power supply coil 22 and the center of the charging coil 12 are accurately positioned by the engaging protrusion 23 of the charging device 3 and the engaging hole 13 of the mobile phone 2, the charging device 3 is efficiently carried. The phone 2 can be charged.

  On the other hand, each function of the charging device 3 shown in the above example can be provided as a software program. Further, the program can be provided by being stored in a recording medium (not shown). As the recording medium, a CD-ROM, flash ROM, memory card (compact flash (registered trademark), smart media, memory stick, etc.), magneto-optical disk, digital versatile disk, flexible disk, and the like can be used.

  Regardless of the embodiment described above, the processing steps of the charging device 3 can be changed as appropriate without departing from the scope of the present invention.

It is a system block diagram of a charging system. It is a perspective view of a mobile phone. It is a perspective view of a charging device. (A) is the schematic diagram which described X mark as the positioning mark in the apparatus main body, (b) is the schematic diagram which described the circular mark as the positioning mark in the apparatus main body. It is a control block diagram of a charging system. It is a figure which shows an example of the charge mode memorize | stored in the charge mode memory | storage part. It is a flowchart which shows the charging process in a charging system. It is a cross-sectional schematic diagram of the charging device which concerns on a modification.

Explanation of symbols

  2 ... Mobile phone (mobile device) 3 ... Charging device (charging device for mobile device) 12 ... Charging coil 14 ... Battery 22 ... Power supply coil 33 ... Charge controller (charge control means) 35 ... Communication controller (communication means) 39 ... Charging mode storage

Claims (6)

A portable device for charging a portable device using electromagnetic induction to a portable device comprising a battery, a charging coil for receiving power by electromagnetic induction, and a device specification storage unit for storing device specifications including its model code Charging device for
A power supply coil for supplying power to the portable device via the charging coil;
For each model code of the portable device, a charging mode storage unit that stores a predetermined charging mode;
Communication means for communicating with the portable device via the charging coil and the power supply coil;
Device specification obtaining means for obtaining the device specification from the portable device by the communication means;
Charging mode setting means for referring to the charging mode storage unit and setting the corresponding charging mode based on the acquired device specifications;
Charge device for portable device comprising: charge control means for charging the portable device in the set charging mode.   The apparatus further comprises charging target determination means for determining whether or not the portable device is a charging target device based on whether or not the charging mode corresponding to the acquired device specification is stored in the charging mode storage unit. The charging device for portable devices according to claim 1.   The charging device for a portable device according to claim 2, further comprising an error notification unit that notifies an error when the charging target determination unit determines that the charging target is not a charging target. The device specification further includes remaining amount data indicating a remaining battery amount of the battery,
4. The portable device charging device according to claim 1, wherein the charging control unit determines a charging time based on the remaining amount data. 5. Power that supplies power to the portable device including the battery, a charging coil for receiving power by electromagnetic induction, and a device specification storage unit that stores device specifications including its model code via the charging coil A charging control method for a charging device for a portable device comprising a supply coil and a charging mode storage unit that stores a predetermined charging mode for each model code of the portable device,
The charging device for portable device comprises:
Communicating with the portable device via the charging coil and the power supply coil, and obtaining the device specifications from the portable device;
Referring to the charging mode storage unit and setting the corresponding charging mode based on the acquired device specifications;
Charging the portable device in the set charging mode; and a charging control method for the portable device charging device.   The program for making a computer perform each step in the charge control method of the charging device for portable devices of Claim 5.

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