JP2007124374A - Auxiliary power unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary power unit for facilitating carrying together with a portable apparatus. <P>SOLUTION: The auxiliary power unit 10 includes: an auxiliary lithium-ion secondary battery 18 for storing electricity; and an attachment hole 30 for fitting a strap 60 to be attached to a cell phone 50 to which the electricity stored in the auxiliary lithium-ion secondary battery 18 is supplied. Thus, the strap 60 fitted to the cellular phone 50 is attached to the auxiliary power unit 10 with the attachment hole 30, so that the auxiliary power unit 10 is easily carried together with the cellular phone 50. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an auxiliary power supply device, and more particularly to an auxiliary power supply device to be applied to a portable device.

  With the recent enhancement of functionality of lithium ion secondary batteries, the demand for various portable devices such as mobile phones, PDAs, and notebook personal computers driven by lithium ion secondary batteries is expanding. Considering a mobile phone as an example of such a mobile device, a lithium ion secondary battery built into the mobile phone when the mobile phone is used (that is, when a voice call or data communication is performed) When the power supply from (hereinafter referred to as the main power supply device) is interrupted, the mobile phone cannot be used. For this reason, if it is desired to use the mobile phone continuously, it is necessary to charge the mobile phone (main power supply device) while the warning sign indicating that the mobile phone has run out of battery is displayed (that is, before the battery runs out). is there.

  In general, a portable device such as a cellular phone is charged by attaching a charger dedicated to each portable device to the portable device and using a household AC power source. However, such a charger can be used at home or in the office, but cannot be used in other places such as outdoors.

Therefore, an auxiliary power supply device that is different from the main power supply device built in the portable device and can charge the portable device even when it is away from home is disclosed in, for example, Patent Document 1 below. Yes.
JP 2003-70177 A

  However, even in the case of the auxiliary power device, when the portable device and the auxiliary power device are carried separately, it is impossible to reliably cope with an unexpected battery exhaustion of the portable device. Specifically, if the auxiliary power supply device is always in the bag and the bag is left behind or lost somewhere, the portable device cannot be charged with the auxiliary power supply device. Can happen.

  Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to provide an auxiliary power supply device that can be easily carried along with a portable device.

  An auxiliary power supply device according to the present invention includes an electricity storage unit that stores electricity, and an attachment unit for attaching a strap that can be attached to a portable device that can supply electricity stored in the electricity storage unit. To do.

  This auxiliary power supply device is provided with attachment means for attaching the strap. The strap can be attached to a portable device capable of supplying electricity stored in the power storage unit of the auxiliary power supply device. Therefore, by attaching the strap attached to the portable device to the auxiliary power supply device by the attaching means, the auxiliary power supply device can be easily carried along with the portable device.

  In addition, the power storage unit is preferably a secondary battery. In this case, even if the electricity of the power storage unit is reduced, the auxiliary power supply device can be used repeatedly by charging.

  Moreover, it is preferable to provide the main-body part in which the electrical storage part was incorporated, and the main-body part is provided with the attachment means. In this case, a mounting means suitable for practical use is provided in the main body.

  The attachment means is preferably an attachment hole provided so as to penetrate the main body. In this case, the strap is attached to the auxiliary power supply device by passing the strap and its coupling tool through the attachment hole.

  Moreover, it is preferable that the attachment means is a handle portion provided outside the main body portion. The strap is attached to the auxiliary power supply device by passing the strap and the connecting tool through the handle.

  Moreover, it is preferable that an attachment means is a hook-and-loop fastener. In this case, the strap is attached to the auxiliary power supply device by attaching one of the hook-and-loop fasteners to the main body and the other to the strap.

  Moreover, it is preferable to provide the 1st connector part which is connected to a portable apparatus and electrically feeds the electricity stored in the electrical storage part to the portable apparatus. In this case, even when a connector is required for power supply to the mobile device, power can be supplied from the auxiliary power supply device to the mobile device.

  In addition, it is preferable that electricity stored in the portable device is supplied to the power storage unit via the first connector unit. In this case, when the power supply from the portable device to the auxiliary power supply device (that is, the charging of the auxiliary power supply device) is possible, the power supply from the portable device to the auxiliary power supply device can be performed.

  Moreover, it is preferable that a main-body part and a 1st connector part are integral. In this case, the auxiliary power supply device can be easily carried compared to the case where the main body portion and the first connector portion are separate.

  Moreover, it is preferable to further include a second connector unit that is connected to the charger and feeds power from the charger to the power storage unit. In this case, even if a connector is required for power supply from the charger to the auxiliary power supply device (that is, charging of the auxiliary power supply device), power supply from the charger to the auxiliary power supply device can be performed.

  Moreover, it is preferable that a main-body part and a 2nd connector part are integral. In this case, the auxiliary power supply device can be easily carried compared to the case where the main body portion and the second connector portion are separate.

  Moreover, it is preferable that the 1st connector part protrudes so that it may fit in the insertion jack of a portable apparatus, and is further provided with the cap covered on a 1st connector part. In this case, damage to the first connector portion can be prevented by the cap.

  Moreover, it is preferable that the voltage of the power storage unit is substantially the same as the rated voltage of the portable device. In this case, it is not necessary to prepare a separate DC-DC converter when supplying power from the auxiliary power supply to the portable device or supplying power from the portable device to the auxiliary power supply.

  In addition, a decorative surface may be provided on at least a part of the surface of the power storage unit or at least a part of the surface of the main body.

  Further, power may be supplied simultaneously from the charger to both the power storage unit and the portable device.

  ADVANTAGE OF THE INVENTION According to this invention, the auxiliary | assistant power supply device made easy to carry with a portable apparatus is provided.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments that are considered to be best for implementing an auxiliary power supply according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected about the same or equivalent element, and the description is abbreviate | omitted when description overlaps.
(First embodiment)

  As shown in FIG. 1, the auxiliary power supply device 10 according to the first embodiment of the present invention is for supplying auxiliary power to a mobile phone 50 that is one of portable devices.

  The mobile phone 50 includes a main lithium-ion secondary battery 52 for driving the mobile phone 50 and an insertion jack 54 to which the auxiliary power supply 10 for charging the main lithium-ion secondary battery 52 is connected. ing. In addition to the control circuit 56 necessary for developing the function of the mobile phone, the mobile phone 50 includes a display, a keyboard, a microphone, a speaker, a charge / discharge control circuit, and the like (not shown).

  A strap 60 is attached to the mobile phone 50. The strap 60 includes a coil spring-like cord portion 62 and openable and closable attachment rings 64A and 64B fixed to both ends thereof. Then, one attachment ring 64 </ b> A of the strap 60 is attached so as to pass through the strap attachment portion 58 of the mobile phone 50, and the strap 60 is attached to the mobile phone 50.

  Next, the auxiliary power supply device 10 will be described.

  The auxiliary power supply device 10 includes a main body portion 12 and a connector (first connector portion) 14 and has, for example, a size of 20 mm × 40 mm × 2 mm thickness. The connector 14 is a part connected to the mobile phone 50 and is provided integrally with the main body 12. The connector 14 protrudes so as to protrude from one side surface of the housing 16 so as to be compatible with the insertion jack 54 of the mobile phone 50 described above. The main body 12 is mainly composed of a case 16 made of plastic or metal, an auxiliary lithium ion secondary battery (power storage unit) 18 and a charge / discharge control circuit 20 housed in the case 16. ing.

  Hereinafter, the circuit configuration of the auxiliary power supply device 10 will be described with reference to FIG.

  The auxiliary power supply device 10 has a pair of external terminals 22 </ b> A and 22 </ b> B connected to the mobile phone 50 in the connector 14. One terminal 22A of the external terminal pair 22A, 22B is electrically connected to the positive electrode of the auxiliary lithium ion secondary battery 18 built in the main body 12 via the temperature fuse 24, and the other terminal. 22B is electrically connected to the negative electrode of the auxiliary lithium ion secondary battery 18. The thermal fuse 24 cuts the line when the temperature reaches a preset temperature (for example, 90 ° C.).

  Further, in this circuit, a charging / discharging control circuit 20 for controlling charging and discharging between the auxiliary lithium ion secondary battery 18 and the mobile phone 50 is connected in parallel to the auxiliary lithium ion secondary battery 18. Has been. The charge / discharge control circuit 20 prevents the auxiliary lithium ion secondary battery 18 from being over-discharged to the mobile phone 50 when the voltage of the auxiliary lithium ion secondary battery 18 falls below a predetermined minimum threshold value. The circuit is interrupted to stop discharging, and the voltage of the auxiliary lithium ion secondary battery 18 reaches a predetermined maximum threshold value in order to prevent overcharge from the mobile phone 50 to the auxiliary lithium ion secondary battery 18. If it exceeds, the circuit is shut off and charging is stopped.

  A known lithium ion secondary battery can be adopted as the auxiliary lithium ion secondary battery 18. The size of the auxiliary lithium ion secondary battery 18 is sufficiently smaller and lighter than the mobile phone 50. Furthermore, the voltage of the auxiliary lithium ion secondary battery 18 is the same as the rated voltage (for example, 3.7 V) of the mobile phone 50.

  Here, the mobile phone 50 and the auxiliary power supply device 10 described above are connected from the auxiliary power supply device 10 to the mobile phone by the cooperation of the charge / discharge control circuit on the mobile phone 50 side and the charge / discharge control circuit 20 on the auxiliary power supply device 10 side. 50, and power supply from the mobile phone 50 to the auxiliary power supply 10 is possible. In the charging between the mobile phone 50 and the auxiliary power supply device 10, the voltage of the auxiliary lithium ion secondary battery 18 and the voltage of the mobile phone 50 are the same as described above, so a separate DC-DC converter is prepared. There is no need to do.

  The above-described main body 12 is provided with a mounting hole 30 penetrating in the thickness direction as a mounting means in the present invention. The other attachment ring 64 </ b> B (connector) of the strap 60 described above is attached to the attachment hole 30. Thereby, the mobile phone 50 and the auxiliary power supply device 10 are connected via the strap 60. The cord portion 62 of the strap 60 is passed through the attachment hole 30 and both attachment rings 64A and 64B are attached to the strap attachment portion 58 of the mobile phone 50 so that the mobile phone 50 and the auxiliary power supply device 10 are connected. Also good.

  As described above, since the auxiliary power supply device 10 includes the attachment hole 30 for attaching the strap 60 that can be attached to the mobile phone 50, the strap 60 attached to the mobile phone 50 as described above. Is attached to the auxiliary power supply device 10 through the attachment hole 30, so that the auxiliary power supply device 10 can be easily carried along with the mobile phone 50. As a result, the situation in which the mobile phone 50 cannot be charged by the auxiliary power supply device 10 can be avoided in advance, and it is possible to cope with an unexpected battery exhaustion of the mobile phone 50 in any case. In addition, by providing the attachment hole 30, a wide variety of commercially available straps for mobile phones can be easily attached.

  In addition, since the attachment means (that is, the attachment hole 30) is provided in the main body portion 12 in which the auxiliary lithium ion secondary battery 18 is incorporated, the attachment means is provided in the auxiliary lithium ion secondary battery 18 directly. A mounting means more practical is provided. Furthermore, since the auxiliary power supply device 10 includes the auxiliary lithium ion secondary battery 18 that is a secondary battery as a power storage unit in the present invention, the auxiliary power supply device 10 can be charged by charging even when the power of the power storage unit is reduced. Can be used repeatedly.

  Note that since the auxiliary power supply 10 includes the connector 14 connected to the mobile phone 50, even if a connector is required for power supply or charging to the mobile phone 50, the auxiliary power supply 10 to the mobile phone 50. Can be powered and charged. Further, in the auxiliary power supply device 10, electricity stored in the mobile phone 50 can be supplied to the auxiliary lithium ion secondary battery 18 via the connector 14, and therefore, from the mobile phone 50 as in the above-described embodiment. When power supply to the auxiliary power supply device 10 (that is, charging of the auxiliary power supply device 10) is possible, power supply from the mobile phone 50 to the auxiliary power supply device 10 can be performed.

  In addition, the auxiliary power supply device that is reduced in size and weight, such as the auxiliary power supply device 10, can also be handled as a strap ornament.

  The auxiliary power supply device 10 described above can be appropriately changed to auxiliary power supply devices 10A to 10G as shown in FIGS. FIG. 3A shows an auxiliary power supply device 10 </ b> A having an annular main body portion 12, and the cord portion 62 and the attachment ring 64 </ b> B of the strap 60 described above are passed through the center hole 30 </ b> A of the main body portion 12. The strap 60 is attached to the auxiliary power supply apparatus 10A, and the center hole 30A functions as the attaching means in the present invention. FIG. 3B shows the auxiliary power supply apparatus 10B having the main body portion 12 with the handle portion 32 provided on the side surface. The cord portion 62 of the strap 60 and the attachment described above are attached to the handle portion 32. By passing the ring 64B, the strap 60 is attached to the auxiliary power supply apparatus 10B, and this handle portion 32 functions as the attaching means in the present invention. Further, FIG. 3C shows an auxiliary power supply device 10C in which the main body 12 and the connector 14 are separate bodies. However, in terms of facilitating carrying of the auxiliary power supply device, the main body 12 and the connector 14 are preferably integrated.

  FIG. 4A shows an auxiliary power supply device 10 </ b> D in which a hook-and-loop fastener 34 is attached to the upper surface 12 a of the main body 12. One of the hook-and-loop fasteners 34 (hook side 34 </ b> A) is attached to the main body 12, and the other (the loop side 34 </ b> B) is attached to the strap 60. Thereby, the strap 60 is attached to the auxiliary power supply apparatus 10D, and the hook-and-loop fastener 34 functions as the attaching means in the present invention. FIG. 4B shows an auxiliary power supply device 10 </ b> E having an auxiliary lithium ion secondary battery 18 </ b> A and a connector 14. The auxiliary power supply device 10E does not include the main body 12 as described above, and has a configuration in which the connector 14 is attached to the auxiliary lithium ion secondary battery 18A. This auxiliary lithium ion secondary battery 18A is an auxiliary lithium ion secondary battery of the type shielded by a laminate pack of resin or Al, and an attachment hole 30 is provided at the edge of the laminate pack. In this auxiliary power supply device 10E, it is possible to further reduce the size and weight of the auxiliary power supply devices 10 and 10A to 10D including the main body portion 12 described above.

FIG. 5A shows an auxiliary power supply device 10 </ b> F in which a decorative surface S is provided on substantially the entire upper surface 12 a of the main body 12. On this decorative surface S, decorative characters are printed. The decorative surface S is not limited to the upper surface 12a as long as it is the surface of the main body portion 12, and may be a part or all of the surface. FIG. 5B shows an auxiliary power supply device 10 </ b> G in which a decorative surface S is provided on a part of the upper surface 18 a of the auxiliary lithium ion secondary battery 18. Characters are printed on the decorative surface S. The decorative surface S is not limited to the upper surface 18a as long as it is the surface of the auxiliary lithium ion secondary battery 18, and may be a part or all of the surface. The auxiliary power supply device provided with the decorative surface S like the auxiliary power supply device 10F and the auxiliary power supply device 10G described above has improved decorativeness when used as a strap ornament. The decorative surface S is a surface on which characters, illustrations, characters, patterns, pictures, and the like are displayed.
(Second Embodiment)

  The auxiliary power supply device 10H according to the second embodiment of the present invention shown in FIG. 6 is also for supplying auxiliary power to the mobile phone 50 in the same manner as the auxiliary power supply device 10 according to the first embodiment described above. However, it differs from the auxiliary power supply 10 in that it can be charged by the charger 70. That is, the auxiliary power supply device 10 </ b> H has a connector (second connector portion) 36 connected to the charger 70, and the connector 14 only supplies power to the mobile phone 50.

  Here, the charger 70 that charges the auxiliary power supply 10H is a charger that can also charge the mobile phone 50 described above, and includes a plug 72 for connecting to the AC power supply AC, the auxiliary power supply 10H, and the mobile phone 50. A charge control circuit 74 for converting the current / voltage into a suitable current / voltage, and a charge connector 76 connectable to the auxiliary power supply device 10H and the mobile phone 50.

  Hereinafter, the circuit configuration of the auxiliary power supply device 10H will be described with reference to FIG.

  The auxiliary power supply device 10H has an external terminal pair 26A, 26B connected to the charger 70 in the connector 36 in addition to the external terminal pair 22A, 22B of the auxiliary power supply device 10 described above. One terminal 26A of the external terminal pair 26A, 26B is electrically connected to the positive electrode of the auxiliary lithium ion secondary battery 18 via the thermal fuse 24, and the other terminal 26B is connected to the auxiliary lithium ion secondary battery. The secondary battery 18 is electrically connected to the negative electrode. A diode 28 is provided on a line from the terminal 26 </ b> A toward the positive electrode of the auxiliary lithium ion secondary battery 18. With this circuit configuration, the auxiliary power supply 10 </ b> H can simultaneously supply power to both the auxiliary lithium ion secondary battery 18 and the mobile phone 50 from the charger 70 as necessary.

  Also in the auxiliary power supply device 10H described above, the mounting hole 30 is provided in the main body portion 12 thereof. Therefore, by attaching the strap 60 attached to the mobile phone 50 to the auxiliary power supply device 10H through the attachment hole 30, the auxiliary power supply device 10H can be easily connected to the mobile phone 50 in the same manner as the auxiliary power supply device 10 according to the first embodiment. It can be carried together. As a result, even in this auxiliary power supply device 10H, it is possible to avoid the situation where the mobile phone 50 cannot be charged by the auxiliary power supply device 10H, and to cope with any unexpected battery exhaustion of the mobile phone 50 in any case. It is.

  In addition, since the auxiliary power supply device 10H includes the connector 36 connected to the charger 70, a connector is required for power supply from the charger 70 to the auxiliary power supply device 10H (that is, charging of the auxiliary power supply device 10H). Even so, power can be supplied from the charger 70 to the auxiliary power supply device 10H. Furthermore, since the main body 12 and the connector 36 are integrated, it is easier to carry the auxiliary power device 10H than when the main body 12 and the connector 36 are separate.

As shown in FIG. 6, the auxiliary power supply device 10 </ b> H may include a cap 38 that covers the connector 14 that protrudes so as to fit the insertion jack 54 of the mobile phone 50. The cap 38 can prevent a short circuit in the connector 14 due to damage of the connector 14 or adhesion of dust or the like. Needless to say, the cap 38 can be applied to the auxiliary power supply 10 and the like described above.
(Third embodiment)

  The auxiliary power supply 10I according to the third embodiment of the present invention shown in FIG. 8 is also for supplying auxiliary power to the mobile phone 50 in the same manner as the auxiliary power supply 10 according to the first embodiment described above. However, it differs from the auxiliary power supply device 10 in that it is charged using the contact terminal pair 54A of the mobile phone 50. That is, the auxiliary power supply device 10I includes protruding terminal pairs (first connector portions) 42A and 42B connected to the contact terminal pair 54A of the mobile phone 50. The protruding terminal pairs 42A and 42B correspond to the external terminal pairs 22A and 22B of the circuit according to the first embodiment. In order to stably fix the auxiliary power supply device 10I and the mobile phone 50 during charging between the auxiliary power supply device 10I and the mobile phone 50, the auxiliary power supply device 10I has a plug-in jack of the mobile phone 50. A dummy connector 40 to be inserted into 54 is provided. The protruding terminal pairs 42A and 42B are normally housed in the main body 12 and may be a mechanism that is exposed from the main body 12 only when the dummy connector 4 is inserted into the insertion jack 54.

  The main body 12 of the auxiliary power supply 10I also has an annular handle 44 equivalent to the handle 32 of the auxiliary power supply 10B described above as an attachment means of the present invention. Therefore, also in the auxiliary power supply device 10I according to the third embodiment, the auxiliary power supply device 10I can be easily carried along with the mobile phone 50, similarly to the auxiliary power supply devices according to the first and second embodiments. It has become. As a result, even in this auxiliary power supply device 10I, it is possible to avoid the situation where the mobile phone 50 cannot be charged by the auxiliary power supply device 10I, and to deal with an unexpected battery exhaustion of the mobile phone 50 in any case. It is.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, the mobile device is not limited to a mobile phone, and may be a camera, a notebook computer, a PDA, or the like as long as it is a portable electronic device to which a strap can be attached. Further, the strap is not limited to the one having a coil spring-like cord portion, but can be appropriately changed to those having various known shapes (strings or the like) or materials (plastic, leather, rubber, etc.). Furthermore, the shape of the connector of the auxiliary power supply device is not particularly limited, and can be appropriately modified according to the connector of the portable device and the connector of the charger.

  The shape of the main body of the auxiliary power supply device is not limited to a rectangular box shape, but can be appropriately changed to a shape having a polygonal cross section or a star cross section, or a shape imitating an animal or an anime character. The decoration of the main body part of the auxiliary power supply device can also be changed to various modes by printing characters / illustrations on the surface of the main body part, deformation of the mounting hole / grip part, or the like. The power storage unit is not limited to the lithium ion secondary battery, and can be appropriately changed to various known batteries.

It is a figure showing an auxiliary power unit concerning a 1st embodiment of the present invention. It is the figure which showed the circuit structure of the auxiliary power supply device shown in FIG. It is the top view which showed the auxiliary power supply of the aspect different from the auxiliary power supply shown in FIG. It is the side view which showed the auxiliary power supply of the aspect different from the auxiliary power supply shown in FIG. It is the side view which showed the auxiliary power supply of the aspect different from the auxiliary power supply shown in FIG. It is the figure which showed the auxiliary power supply device which concerns on 2nd Embodiment of this invention. It is the figure which showed the circuit structure of the auxiliary power supply device shown in FIG. It is the figure which showed the auxiliary power supply device which concerns on 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10,10A-10I ... Auxiliary power supply device, 12 ... Main-body part, 14, 36 ... Connector, 18, 18A ... Lithium ion secondary battery for assistance, 20 ... Charge / discharge control circuit, 30 ... Mounting hole, 30A ... Center hole, 32 ... handle part, 34 ... hook and loop fastener, 38 ... cap, 42A, 42B ... protruding terminal pair, 44 ... handle part, 50 ... mobile phone, 60 ... strap, 64A, 64B ... mounting ring, 70 ... charger, S ... Decorative surface.

Claims (16)

A power storage unit for storing electricity;
An auxiliary power supply device comprising: an attaching means for attaching a strap that can be attached to a portable device capable of supplying electricity stored in the power storage unit.   The auxiliary power supply device according to claim 1, wherein the power storage unit is a secondary battery.   The auxiliary power supply device according to claim 1, further comprising a main body part in which the power storage unit is built, wherein the attachment unit is provided in the main body part.   The auxiliary power supply device according to claim 3, wherein the attachment means is an attachment hole provided so as to penetrate the main body portion.   The auxiliary power supply device according to claim 3, wherein the attachment means is a handle portion provided outside the main body portion.   The auxiliary power supply device according to claim 3, wherein the attachment means is a hook-and-loop fastener.   The auxiliary power supply device according to any one of claims 1 to 6, further comprising a first connector unit that is connected to the portable device and feeds electricity stored in the power storage unit to the portable device.   The auxiliary power supply device according to claim 7, wherein electricity stored in the portable device is supplied to the power storage unit via the first connector unit.   The auxiliary power supply device according to claim 7 or 8, wherein the main body portion and the first connector portion are integrated.   The auxiliary power supply device according to any one of claims 2 to 9, further comprising a second connector unit connected to a charger and supplying power from the charger to the power storage unit.   The auxiliary power supply device according to claim 10, wherein the main body portion and the second connector portion are integrated.   The said 1st connector part protrudes so that it may fit in the insertion jack of the said portable apparatus, and is further provided with the cap covered on a said 1st connector part. Auxiliary power supply.   The auxiliary power supply device according to any one of claims 1 to 12, wherein a voltage of the power storage unit is substantially the same as a rated voltage of the portable device.   The auxiliary power supply device according to claim 1, wherein a decorative surface is provided on at least a part of the surface of the power storage unit.   The auxiliary power supply device according to any one of claims 3 to 13, wherein a decoration surface is provided on at least a part of the surface of the main body.   The auxiliary power supply device according to claim 10, wherein power is supplied simultaneously from the charger to both the power storage unit and the portable device.

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