JP2006340114A - Portable telephone, built-in battery pack for portable telephone, and auxiliary power for portable telephone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently supply electric power of an auxiliary buttery to a portable telephone with a simple circuit configuration. <P>SOLUTION: The portable telephone comprises a telephone body 10, and a built-in battery pack 20 having a built-in battery 21 which is detachably mounted on the telephone body 10, and supplies electric power to the telephone body 10. The built-in battery pack 20 includes sub connection terminals 23 for connecting to the outside of the case 27 besides output terminals 22 electrically connected to a power source terminal 14 of the telephone body 10. The sub connection terminals 23 are connected to the output terminals 22 via a non-charging circuit for supplying to the output terminals 22 without charging the built-in battery 21 with electric power supplied from an outside portion. The portable telephone supplies electric power supplied to the sub connection terminals 23 to the telephone body 10 via the non-charging circuit and the output terminals 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile phone that can supply power from the outside, a built-in battery pack for the mobile phone that supplies power to the mobile phone, and an auxiliary power source.

The mobile phone incorporates a built-in battery pack in the power source. The built-in battery pack is a secondary battery such as a lithium ion secondary battery. The mobile phone cannot be used when the built-in battery pack is completely discharged. That is, the time for which the capacity of the built-in battery pack can be used is determined. Auxiliary power supply devices have been developed for using mobile phones for a long time. (See Patent Document 1)
Utility model registration No. 3085745

  The auxiliary battery device for a mobile phone described in this publication supplementarily supplies power to the mobile phone and is electrically connected to the auxiliary battery main body attached to the built-in battery pack provided in the mobile phone. And a connection member electrically connected to the external charging terminal of the mobile phone. The connection member includes a plate member that is in contact with the external charging terminal of the mobile phone, and a convex contact portion that is provided on the plate member and is in contact with the external charging terminal.

  This auxiliary battery device is connected to an external charging terminal of the mobile phone. Since the external charging terminal is a terminal for charging the built-in battery pack, it is connected to the built-in battery pack via the charge control circuit. Therefore, the auxiliary battery device is connected in parallel to the built-in battery pack via the charge control circuit. The circuit configuration in which the auxiliary battery device is connected in parallel to the internal battery pack cannot efficiently charge the internal battery pack if a nickel metal hydride battery or nickel cadmium battery is used as an auxiliary battery, and the internal battery pack is bad if a dry battery is used. May have an effect. The auxiliary battery can be conveniently used using an AA type secondary battery or primary battery. This is because it can be easily obtained anytime and anywhere. In particular, since the auxiliary battery is conveniently used when the built-in battery pack is discharged and cannot be charged, a battery that can be purchased anytime and anywhere can be used conveniently. Nickel metal hydride batteries and nickel cadmium batteries are commercially available as AA type secondary batteries. The voltage of this secondary battery is 1.2V. The mobile phone is used until the lithium ion secondary battery in the built-in battery pack drops to 3.3V. Therefore, a lithium ion secondary battery can be charged as an output voltage of 3.6 V by connecting three nickel metal hydride batteries or nickel cadmium batteries in series. However, since the full charge voltage of the lithium ion secondary battery is 4.1 to 4.2 V, the lithium ion secondary battery cannot be fully charged with the auxiliary battery. Furthermore, the voltage of the nickel metal hydride battery of the auxiliary battery decreases as the built-in battery pack is charged. Nickel metal hydride batteries can be used until the voltage drops to about 1V. However, when the voltage of the nickel metal hydride battery is reduced to 1V, the output voltage of the auxiliary battery in which three of these are connected in series is reduced to 3V. When the voltage drops to this voltage, the lithium ion secondary battery in the built-in battery pack cannot be charged. This is because the minimum use voltage of the mobile phone is 3.3 V, and if it becomes lower than this voltage, the mobile phone cannot be used. Therefore, when an AA type secondary battery such as a nickel metal hydride battery or a nickel cadmium battery is used for the auxiliary battery, the built-in battery pack cannot be effectively charged. AA batteries can also be used as the auxiliary battery. The voltage of the dry battery is 1.5V. When three dry batteries are connected in series, the output voltage of the auxiliary battery is 4.5 V, which is higher than the full charge voltage of the lithium ion secondary battery that is the built-in battery pack. For this reason, when the auxiliary battery is connected in a state where the built-in battery pack is nearly fully charged, the lithium ion secondary battery of the built-in battery pack is overcharged and deteriorates significantly. Therefore, the auxiliary power supply device that connects the auxiliary battery device to the external charging terminal of the mobile phone and connects the auxiliary battery and the internal battery pack in parallel, charges the auxiliary battery while charging the internal battery pack in an ideal state. There is a drawback that it cannot be used effectively as a power source for a mobile phone.

  This disadvantage can be solved by incorporating a circuit for controlling the output voltage of the auxiliary battery in the auxiliary power supply. However, in order to change the direct current voltage, it is necessary to use a DC / DC converter having a complicated circuit configuration, and there is a disadvantage that the manufacturing cost is extremely high.

  Further, when the built-in battery pack is charged with the auxiliary battery, the built-in battery pack cannot be charged with 100% of the discharge power of the auxiliary battery, and the use efficiency of the auxiliary battery is deteriorated.

  Furthermore, the external charging terminal of the mobile phone is provided with a signal terminal together. For this reason, when an external device such as a modem is connected to the signal terminal, there is a disadvantage that the auxiliary power supply device cannot be connected to the external charging terminal.

  Furthermore, since the external charging terminal is provided at the lower end portion of the mobile phone, there is a drawback that the contact is easily damaged due to dropping, and the contact becomes dirty due to water soaking, and contact failure is likely to occur.

  The present invention has been developed for the purpose of solving the conventional drawbacks. An important object of the present invention is to provide a mobile phone capable of efficiently supplying the power of a battery connected to the outside to the mobile phone with a simple circuit configuration, and further extending the use time without adversely affecting the built-in battery pack, An object is to provide a built-in battery pack for a mobile phone and an auxiliary power source for the mobile phone.

  In addition, another important object of the present invention is that power can be supplied by an auxiliary battery while using an external device such as a modem, and the external charging terminal of the mobile phone is contaminated, so that contact failure is likely to occur. Another object of the present invention is to provide a mobile phone that can stably supply power from an auxiliary power source, a built-in battery pack for a mobile phone, and an auxiliary power source for a mobile phone.

  A cellular phone according to a first aspect of the present invention includes a telephone body 10 and a built-in battery pack 20 having a built-in battery 21 that is detachably attached to the telephone body 10 and supplies power to the telephone body 10. The built-in battery pack 20 includes a sub connection terminal 23 that is exposed to the outside of the case 27 in addition to the output terminal 22 that is electrically connected to the power supply terminal 14 of the telephone body 10. The sub connection terminal 23 is connected to the output terminal 22 via a non-charging circuit that supplies the output terminal 22 without charging the built-in battery 21 with electric power supplied from the outside. This mobile phone supplies power supplied to the sub connection terminal 23 to the phone main body 10 via the non-charging circuit and the output terminal 22.

  The mobile phone according to claim 2 of the present invention includes a telephone main body 10, an internal battery pack 20 including an internal battery 21 that is detachably attached to the telephone main body 10 and supplies power to the telephone main body 10, and the telephone main body 10. And an auxiliary power source 30 having a built-in auxiliary battery 31 for supplying power to the power source. The built-in battery pack 20 includes a sub connection terminal 23 that is exposed to the outside of the case 27 in addition to the output terminal 22 that is electrically connected to the power supply terminal 14 of the telephone body 10. The sub connection terminal 23 is connected to the output terminal 22 via a non-charging circuit that supplies the output terminal 22 without charging the built-in battery 21 with the power supplied from the auxiliary power supply 30. The auxiliary power supply 30 includes a connector 34 that is connected to the sub connection terminal 23 of the built-in battery pack 20 so as to be detachable. In the mobile phone, the auxiliary power source 30 is connected to the internal battery pack 20 via the connector 34 and the sub connection terminal 23, and the auxiliary battery 31 of the auxiliary power source 30 outputs the sub connection terminal 23, the non-charging circuit, and the output of the internal battery pack 20. Electric power is supplied to the telephone body 10 via the terminal 22 without charging the built-in battery 21.

  In the mobile phone of the present invention, the non-charging circuit includes a first diode 26A that connects the internal battery 21 to the output terminal 22, and a second diode 26B that connects the sub connection terminal 23 to the output terminal 22. be able to. The first diode 26A is connected in a direction in which power can be supplied from the built-in battery 21 to the output terminal 22, and the second diode 26B is connected in a direction in which power can be supplied from the sub connection terminal 23 to the output terminal 22. In this mobile phone, the power supplied from the built-in battery 21 and the sub connection terminal 23 is supplied to the phone body 10 via the diode 26.

  The cellular phone according to the present invention can include an external charging terminal 12 for charging the internal battery pack 20 in the telephone body 10 and a charging control circuit 33 for controlling the charging of the auxiliary battery 31 of the secondary battery. . The charging control circuit 33 is connected to the internal battery pack 20 via the connector 34 and the sub connection terminal 23, and further connected to the external charging terminal 12 via the output terminal 22 of the internal battery pack 20 and the power supply terminal 14 of the telephone body 10. The secondary battery of the auxiliary power source 30 is charged through an external power source connected to the external charging terminal 12. Furthermore, in the mobile phone of the present invention, the built-in battery pack 20 can incorporate a control circuit 24 that switches between charging of the built-in battery 21 and the auxiliary battery 31.

  A cellular phone according to a sixth aspect of the present invention includes a telephone body 10 and a built-in battery pack 20 having a built-in battery 21 that is detachably attached to the telephone body 10 and supplies power to the telephone body 10. The telephone body 10 includes a sub power supply terminal 19 that is exposed to the outside of the case 11 and supplies power to the telephone body 10 from the outside. The built-in battery pack 20 or the telephone body 10 includes a non-charging circuit that prevents the built-in battery 21 from being charged with power supplied from the sub power supply terminal 19 to the telephone body 10. The mobile phone supplies power to the sub power terminal 19 and supplies power to the phone body 10 without charging the internal battery 21 with this power.

  A cellular phone according to a seventh aspect of the present invention includes a telephone body 10, a built-in battery pack 20 including a built-in battery 21 that is detachably attached to the telephone body 10 and supplies power to the telephone body 10, and the telephone body 10. And an auxiliary power source 30 having a built-in auxiliary battery 31 for supplying power to the power source. The telephone body 10 includes a sub power terminal 19 that is exposed to the outside of the case 11 and supplies power from the auxiliary power source 30 to the telephone body 10. The built-in battery pack 20 or the telephone body 10 includes a non-charging circuit that prevents the built-in battery 21 from being charged with power supplied from the sub power supply terminal 19 to the telephone body 10. The auxiliary power supply 30 includes a connector 34 that is connected to the sub power supply terminal 19 of the telephone body 10 so as to be detachable. The mobile phone connects the auxiliary power supply 30 to the telephone main body 10 via the connector 34 and the sub power supply terminal 19, and the auxiliary battery 31 of the auxiliary power supply 30 supplies power to the telephone main body 10 without charging the built-in battery 21. .

  In the mobile phone of the present invention, the non-charging circuit includes a first diode 26A connecting the internal battery 21 to the output terminal 22 and a second diode 26B connecting the auxiliary battery 31 to the sub output terminal 36. be able to. The first diode 26A is connected in a direction in which power can be supplied from the built-in battery 21 to the output terminal 22, and the second diode 26B is connected in a direction in which power can be supplied from the auxiliary battery 31 to the sub output terminal 36. In this mobile phone, the power supplied from the built-in battery 21 is supplied to the telephone body 10 via the first diode 26A, and the power supplied from the auxiliary battery 31 is supplied to the telephone body 10 via the second diode 26B. The

  In the mobile phone of the present invention, the telephone body 10 includes an external charging terminal 12 that charges the built-in battery pack 20, the auxiliary power supply 30 includes a sub charging terminal 37 that charges the auxiliary battery 31 of the secondary battery, and the secondary battery. A charge control circuit 33 for controlling the charging of the auxiliary battery 31 can be provided. The charging control circuit 33 charges the secondary battery of the auxiliary power source 30 via an external power source connected to the sub charging terminal 37.

  Further, in the mobile phone of the present invention, the telephone body 10 includes the external charging terminal 12 that charges the internal battery pack 20, and the auxiliary power source 30 includes the sub charging terminal 37 that charges the auxiliary battery 31 of the secondary battery. The charging of the auxiliary battery 31 of the auxiliary power supply 30 can be controlled via the charging control circuit 53 provided in the external power supply connected to the sub charging terminal 37.

  Furthermore, in the mobile phone of the present invention, the auxiliary power supply 30 can be connected to the back surface of the phone body 10 via the locking hook 35 so as to be detachable.

  A built-in battery pack for a mobile phone according to a twelfth aspect of the present invention is a built-in battery pack that is mounted so as to be detachable from the telephone body 10 and includes a built-in battery 21 that supplies power to the telephone body 10. The built-in battery pack includes a sub connection terminal 23 that is exposed to the outside of the case 27 in addition to the output terminal 22 that is electrically connected to the power supply terminal 14 of the telephone body 10. The sub connection terminal 23 is connected to the output terminal 22 via a non-charging circuit that supplies the output terminal 22 without charging the built-in battery 21 with electric power supplied from the outside. The built-in battery pack supplies power supplied from the outside to the sub connection terminal 23 to the telephone body 10 via the non-charging circuit and the output terminal 22.

  The auxiliary power source for a cellular phone according to claim 13 of the present invention is attached to the back surface of the telephone main body 10 so as to be detachable from the built-in battery pack 20 that supplies power to the telephone main body 10. Supply. The auxiliary power source includes an auxiliary battery 31 that supplies power to the telephone body 10. Further, the auxiliary power source includes a connector 34 that is mechanically and electrically connected to the sub connection terminal 23 provided on the back surface of the built-in battery pack 20. This auxiliary power supply connects the connector 34 to the sub connection terminal 23 and supplies power from the auxiliary battery 31 to the telephone body 10 via the built-in battery pack 20.

  The auxiliary power source for a cellular phone according to claim 15 of the present invention is attached so as to be detachable from the phone body 10 to which power is supplied from the built-in battery pack 20 attached to the back surface, and supplies power to the phone body 10. To do. The auxiliary power source includes an auxiliary battery 31 that supplies power to the telephone body 10. Further, the auxiliary power supply includes a connector 34 that is mechanically and electrically connected to a sub power supply terminal 19 provided on the back surface of the telephone body 10. This auxiliary power supply connects the connector 34 to the sub power supply terminal 19 and supplies power from the auxiliary battery 31 to the telephone body 10.

  The cellular phone according to claims 1 and 2 of the present invention can efficiently supply the power of the battery connected to the outside to the cellular phone with a simple circuit configuration, and can be used without adversely affecting the built-in battery pack. There is a feature that can extend the time. This is because these mobile phones have an internal battery pack, an output terminal that is electrically connected to the phone body, and a sub connection terminal that is exposed to the outside of the case. This is because it is connected to the output terminal through a non-charging circuit that supplies the output terminal without charging. This mobile phone can also be used with an AC adapter connected to the external charging terminal of the phone body while supplying power from the built-in battery to the phone body and connecting an auxiliary power source or the like to the sub connection terminal. In the mobile phone having this structure, the power supplied from the sub connection terminal is supplied to the phone body without being used for charging the built-in battery. For this reason, it is possible to operate the phone body efficiently using the power supplied from the sub connection terminal, and it is necessary to control the voltage and current input from the sub connection terminal to voltages and currents suitable for charging the built-in battery. The power can be efficiently supplied to the phone body while protecting the built-in battery.

  In addition, since this mobile phone can supply power to the phone body as a separate circuit from both the external charging terminal and the sub-connection terminal, the power supply can be freely supplied as compared with a conventional mobile phone that is input only from the external charging terminal. In addition, since the built-in battery is not charged with the power input from the sub connection terminal, the power input from both the external charging terminal and the sub connection terminal can be used efficiently.

  In particular, the mobile phone according to claim 4 of the present invention includes a plurality of input terminals including an external charging terminal provided in the telephone body and a sub connection terminal provided in the built-in battery pack. Electric power can be supplied from the sub connection terminal while the device is connected and used. In addition, since it has a plurality of terminals consisting of an external charging terminal and a sub-connection terminal, an auxiliary power supply or the like is connected to the sub-connection terminal even if the external charging terminal of the mobile phone is prone to contact failure due to contamination. Thus, the power can be supplied stably from here.

  In the mobile phone according to claim 3 of the present invention, since the non-charging circuit is constituted by a diode, the built-in battery is charged with power supplied from the outside connected to the sub connection terminal while having a simple circuit configuration. While preventing, there is a feature that power can be efficiently supplied to the telephone body by the built-in battery and the battery connected to the outside.

  According to a fourth aspect of the present invention, there is provided a mobile phone comprising a charge control circuit for controlling charging of an auxiliary battery that is a secondary battery built in the auxiliary power supply, and the charge control circuit is connected to the connector and the sub-connection terminal. Connected to the internal battery pack, connected to the external charging terminal via the output terminal of the internal battery pack and the power supply terminal of the phone body, and the secondary battery of the auxiliary power supply with the external power supply connected to the external charging terminal Therefore, there is a feature that the secondary battery of the auxiliary battery can be charged in an ideal state while using the external power source together with the charging power source of the auxiliary battery.

  Furthermore, the mobile phone according to claim 5 of the present invention has a built-in control circuit for switching charging of the auxiliary battery connected to the built-in battery and the sub-connecting terminal in the built-in battery pack, so that it is input from the external charging terminal. It can charge both the built-in battery and the auxiliary battery with power. Further, since charging is performed by switching between the built-in battery and the auxiliary battery, the auxiliary battery can also be charged while the externally supplied power is low enough to charge only the built-in battery.

  The mobile phone according to claims 6 and 7 of the present invention can efficiently supply the power of the battery connected to the outside to the mobile phone with a simple circuit configuration, and can be used without adversely affecting the built-in battery pack. There is a feature that can extend the time. That is, these mobile phones are provided with a sub power supply terminal that is exposed to the outside of the case on the phone body, and the built-in battery is charged with power supplied from the sub power supply terminal to the built-in battery pack or the phone body. This is because a non-charging circuit is provided to prevent the charging and power is supplied to the telephone body without charging the built-in battery with the power supplied from the sub power supply terminal. This mobile phone can be used with an AC adapter connected to the external charging terminal of the telephone body while supplying power from the built-in battery to the telephone body and connecting an auxiliary power source to the sub power terminal. The mobile phone having this structure supplies the power supplied from the sub power supply terminal to the phone body without using it for charging the built-in battery. For this reason, it is possible to operate the phone body efficiently using the power supplied from the sub power terminal, and it is necessary to control the voltage and current input from the sub power terminal to a voltage and current suitable for charging the built-in battery. The power can be efficiently supplied to the phone body while protecting the built-in battery.

  In addition, since this mobile phone can supply power to the phone body as a separate circuit from both the external charging terminal and the sub power supply terminal, the power supply can be more freely compared to a conventional mobile phone that is input only from the external charging terminal. In addition, since the built-in battery is not charged with the power input from the sub power supply terminal, the power input from both the external charging terminal and the sub power supply terminal can be used efficiently.

  In particular, in the cellular phone according to claims 9 and 10 of the present invention, since the telephone body includes a plurality of input terminals including an external charging terminal and a sub power supply terminal, an external device such as a modem is connected to the external charging terminal. While using this, power can also be supplied from the sub power supply terminal. Also, since it has a plurality of terminals consisting of an external charging terminal and a sub power supply terminal, an auxiliary power supply or the like is connected to the sub power supply terminal even if the external charging terminal of the mobile phone is likely to cause poor contact due to contamination. Thus, the power can be supplied stably from here.

  In the mobile phone according to claim 8 of the present invention, since the non-charging circuit is constituted by a diode, the built-in battery is charged by the power supplied from the outside connected to the sub power supply terminal while having a simple circuit configuration. While preventing, there is a feature that power can be efficiently supplied to the telephone body by the built-in battery and the battery connected to the outside.

  According to a ninth aspect of the present invention, there is provided a mobile phone comprising: a sub charge terminal for charging an auxiliary battery which is a secondary battery built in the auxiliary power source; and a charge control circuit for controlling charging of the auxiliary battery. Since the circuit is connected to the external power source via the sub charging terminal to charge the secondary battery of the auxiliary power source, the secondary battery of the auxiliary battery is designed as an optimum structure for charging the auxiliary battery. The battery can be charged in an ideal state.

  According to a tenth aspect of the present invention, there is provided a mobile phone comprising a sub charging terminal for charging an auxiliary battery which is a secondary battery built in the auxiliary power source, and charging provided in an external power source connected to the sub charging terminal. Since charging of the auxiliary battery of the auxiliary power source is controlled via the control circuit, there is a feature that the auxiliary power source can be simplified and the auxiliary battery can be ideally incorporated.

  Furthermore, in the mobile phone according to claim 11 of the present invention, the auxiliary power source is connected to the rear surface of the phone main body through the locking hook so as to be detachable, so that the telephone main body set to the auxiliary power source is prevented from being detached. There is a feature that can be placed in position.

  Furthermore, since the auxiliary power source for the mobile phone according to claims 13 and 14 of the present invention can be mechanically and electrically connected directly to the back surface of the telephone body, the auxiliary power source can be connected to the lower end of the conventional mobile phone. Compared to the auxiliary power source connected to the charging terminal provided, it is possible to reduce damage caused by dropping or contamination of the contact point due to wetness, resulting in poor contact. Further, unlike a conventional mobile phone, there is no need to use a holding member such as Velcro (registered trademark) on the built-in battery, and the auxiliary power supply can be arranged in the mobile phone with a good appearance. In addition, since the charging terminal at the bottom of the mobile phone is not blocked, an external device such as a modem can be connected to this terminal, and the convenience of the mobile phone can be further improved.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify a mobile phone, a built-in battery pack for a mobile phone, and an auxiliary power source for the mobile phone for embodying the technical idea of the present invention. The internal battery pack and auxiliary power supply are not specified as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The mobile phone shown in FIGS. 1 to 5 is provided with a telephone body 10, a built-in battery pack 20 that is detachably attached to the telephone body 10 and supplies power to the telephone body 10, and supplies power to the telephone body 10. And an auxiliary power source 30.

  The telephone body 10 incorporates a receiving circuit, a transmitting circuit, a signal processing circuit, and the like so that it can be used as a wireless telephone. The telephone body 10 is provided with an external charging terminal 12 at the lower end of the case 11. The external charging terminal 12 is two terminals including a minus side terminal and a plus side terminal. The external charging terminal 12 is connected to an AC adapter 40 that is an external power source via a connector. Further, as shown in the circuit diagram of FIG. 6, the telephone body 10 includes a charging control circuit 13 that controls charging of the built-in battery pack 20. The charging control circuit 13 is connected between the external charging terminal 12 and the built-in battery pack 20, controls the power input from the AC adapter 40, and supplies it to the built-in battery pack 20. The charging control circuit 13 controls the charging voltage and charging current of the lithium ion secondary battery that is the built-in battery 21 built in the built-in battery pack 20 to fully charge the built-in battery pack 20. The charge control circuit 13 charges the built-in battery pack 20 with a constant current to a predetermined voltage, and then charges the built-in battery pack 20 with a constant voltage to fully charge it. When the built-in battery pack 20 is fully charged, the charging current is cut off and charging is stopped. The external charging terminal 12 is supplied with power from the AC adapter 40. The AC adapter 40 converts AC 100V of commercial power into a voltage that can fully charge the internal battery pack 20, for example, 5.5V DC, and outputs the converted voltage. Further, the telephone body 10 is provided with a signal terminal (not shown) connected to an external device and an antenna terminal (not shown) connected to an external antenna adjacent to the external charging terminal 12.

  As shown in the circuit diagram of FIG. 6, the telephone body 10 includes a power supply terminal 14 connected to the built-in battery pack 20. The power supply terminal 14 includes a minus terminal 14C and two plus terminals. The first plus terminal 14A is a terminal connected to the auxiliary power supply 30 via the built-in battery pack 20, and is connected to the external charging terminal 12 on the plus side. The second plus terminal 14 </ b> B is connected to the plus side of the built-in battery pack 20, and is connected to the power line 15 of the telephone body 10 and the output side of the charging control circuit 13.

  The built-in battery pack 20 includes an output terminal 22 that is electrically connected to the power supply terminal 14 of the telephone body 10 and a sub connection terminal 23 that connects the auxiliary power supply 30. The output terminal 22 is connected to the power supply terminal 14 inside the telephone body 10. The output terminal 22 has three terminals, and is composed of a negative terminal and two positive terminals. Since the sub connection terminal 23 is connected to the external auxiliary power supply 30, it is exposed outside the case 27.

  Further, the built-in battery pack 20 includes a built-in battery 21 as a secondary battery, a control circuit 24 for switching the built-in battery 21 and the auxiliary power supply 30 to supply power to the telephone body 10, and turning on and off the control circuit 24. A switch 25 to be controlled and a diode 26 are provided.

  The built-in battery 21 is a lithium ion secondary battery. A lithium ion secondary battery is light and has a large capacity, and is suitable for a mobile phone. However, the present invention does not specify the secondary battery of the built-in battery pack as a lithium ion secondary battery, and a light and large-capacity battery to be developed can be used as the secondary battery.

  The control circuit 24 switches the switch 25 on and off to switch the battery charged with the power input from the AC adapter 40 to the built-in battery 21 and the auxiliary battery 31. The control circuit 24 does not charge the built-in battery 21 and the auxiliary battery 31 at the same time when the AC adapter 40 is connected. Either the built-in battery 21 or the auxiliary battery 31 is switched for charging. Thus, a mobile phone that charges by switching one of the batteries can reduce the output of the AC adapter 40.

  The control circuit 24 switches the battery to be charged from the built-in battery 21 to the auxiliary battery 31 after the built-in battery 21 is fully charged or almost fully charged. The control circuit 24 detects the full charge of the internal battery 21 and switches the switch 25 on and off. The switch 25 includes a first switch 25A, a second switch 25B, and a third switch 25C. The first switch 25 </ b> A is connected between the positive side of the built-in battery 21 and the output terminal 22. The first switch 25 </ b> A charges the built-in battery 21 with the AC adapter 40 in an on state. The second switch 25B and the third switch 25C are connected between the sub connection terminal 23 and the output terminal 22. The second switch 25 </ b> B is connected to the charging control circuit 33 of the auxiliary power supply 30 and the external charging terminal 12 of the telephone body 10. The third switch 25C is connected to the auxiliary battery 31 and the power line 15 of the telephone body 10. The AC adapter 40 charges the auxiliary battery 31 in a state where the second switch 25B is turned on and the third switch 25C is turned off. The first switch 25A and the second switch 25B are not switched on at the same time. When either one is switched on, the other switch is switched off. Therefore, the electric power input from the AC adapter 40 is supplied to either the built-in battery 21 or the auxiliary battery 31 to charge one of the batteries. The third switch 25C is turned off when the second switch 25B is turned on to charge the auxiliary battery 31, and is turned on when the second switch 25B is turned off and the auxiliary battery 31 supplies power to the telephone body 10. Can be switched to.

  When the built-in battery 21 is charged, the control circuit 24 turns on the first switch 25A, turns off the second switch 25B, and turns on the third switch 25C. When the built-in battery 21 is fully charged and the auxiliary battery 31 is charged, the first switch 25A is turned off, the second switch 25B is turned on, and the third switch 25C is turned off.

  Furthermore, the built-in battery pack 20 includes a non-charging circuit that supplies power to the output terminal 22 without charging the built-in battery 21 with power supplied from the sub connection terminal 23. The built-in battery pack 20 shown in the figure has a first diode 26A and a second diode 26B connected as a non-charging circuit so that the auxiliary battery 31 does not charge the built-in battery 21. The first diode 26A is connected in a direction in which power can be supplied from the built-in battery 21 to the output terminal 22, and the second diode 26B is connected in a direction in which power can be supplied from the auxiliary battery 31 to the output terminal 22. The built-in battery 21 and the auxiliary battery 31 supply power to the telephone body 10 through the diode 26. The built-in battery 21 and the auxiliary battery 31 are connected in parallel via the diode 26 and supply power to the telephone body 10. However, the diode 26 allows a current to flow from the battery toward the telephone body 10, but does not allow a current to flow in the opposite direction. Therefore, the auxiliary battery 31 cuts off the charging current for charging the built-in battery 21 and the charging current for charging the auxiliary battery 31 by the built-in battery 21. Therefore, even if there is a voltage difference between the built-in battery 21 and the auxiliary battery 31, the high voltage battery does not charge the low voltage battery. The first diode 26 </ b> A supplies power from the built-in battery 21 to the telephone body 10 that is a load, but blocks the charging current from the auxiliary battery 31. The second diode 26 </ b> B supplies power from the auxiliary battery 31 to the telephone body 10, but cuts off the charging current from the built-in battery 21.

  In the illustrated mobile phone, the first diode 26A is connected in parallel with the first switch 25A, and the second diode 26B is connected in series with the third switch 25C. The first switch 25A is controlled to be turned on when the built-in battery 21 is charged by the AC adapter 40, and the third switch 25C is controlled to be turned off. Therefore, the auxiliary battery 31 does not charge the internal battery 21 in the state where the first switch 25A is turned on.

  The built-in battery pack 20 includes a 4-terminal sub connection terminal 23 to which the auxiliary power supply 30 is connected. As shown in the bottom view of FIG. 5, the sub connection terminal 23 is exposed and provided outside the case 27 of the built-in battery pack 20. The sub connection terminal 23 supplies power supplied from the auxiliary power supply 30 to the telephone body 10. Therefore, the sub connection terminal 23 is connected to the output terminal 22 via the switch 25 and the diode 26 inside the internal battery pack 20. The sub connection terminal 23 is provided to the outside from the case 27 of the built-in battery pack 20, but does not protrude from the surface of the case 27. Accordingly, a recess 28 for inserting the connector 34 is provided in the case 27, and the contact of the sub connection terminal 23 is disposed in the recess 28.

  7 and 8 are enlarged cross-sectional views of a portion where the sub-connection terminal is provided. 7 and 8 is provided with a storage portion 16 for a built-in battery pack 20 on the back surface of the telephone body 10. The built-in battery pack 20 of FIG. 7 is provided with a lid 29 that closes the opening of the storage portion 16 as an integral structure with the case 27. The built-in battery pack 20 has a sub connection terminal 23 on the back surface. The storage unit 16 shown in FIG. 8 stores the internal battery pack 20 and closes its opening with a separate part attachment / detachment lid 17 separated from the internal battery pack 20. In this structure, in order to expose the sub connection terminal 23 of the built-in battery pack 20 to the outside, a through hole 17A is provided in the attachment / detachment lid 17.

  The storage portion 16 of the telephone body 10 is provided with a power terminal 14 on the inner surface. The built-in battery pack 20 has an output terminal 22 connected to the power supply terminal 14. The output terminal 22 is provided at a position where the built-in battery pack 20 is attached to the storage portion 16 of the telephone body 10 and is electrically connected to the power terminal 14. The built-in battery pack 20 shown in FIGS. 7 and 8 has a sub connection terminal 23 provided on the back side of the telephone body 10 and an output terminal 22 provided on the front side of the telephone body 10. Therefore, the power supply terminal 14 is provided on the bottom surface of the storage portion 16 so as to elastically protrude toward the output terminal 22.

  The 4-terminal sub-connection terminal 23 is connected to the minus terminal 23C, the signal terminal 23D for connecting the control circuit 24 of the built-in battery 21 to the charge control circuit 33 of the auxiliary power supply 30, and the charge control circuit 33, and the AC adapter 40 Is connected to the positive side of the auxiliary battery 31, and the first positive terminal 23B is connected to the positive side of the auxiliary battery 31, and supplies the charging power of the auxiliary battery 31 to the power line 15 of the telephone body 10. It consists of a terminal 23A.

  The auxiliary power supply 30 has an auxiliary battery 31 built in the case 32 and a connector 34 that protrudes from the upper surface of the case 32 and is connected to the sub connection terminal 23 of the built-in battery pack 20 so as to be detachable. The connector 34 is structured to be mechanically and electrically connected to the sub connection terminal 23. As shown in the circuit diagram of FIG. 6, the auxiliary power supply 30 includes a 4-terminal sub-output terminal 36 that is electrically connected to the sub-connect terminal 23 of the built-in battery pack 20, and contacts of the sub-output terminal 36 are connected to the connector. 34.

  Further, the auxiliary power source 30 shown in FIGS. 2 and 3 is provided with a locking hook 35 for locking the telephone body 10 mounted in a fixed position. The auxiliary power source 30 can be arranged at a fixed position so as not to remove the telephone body 10 set on the upper surface.

  The auxiliary power supply 30 shown in the figure has a width substantially equal to the width of the telephone main body 10 and a length substantially equal to the length of the telephone main body 10 folded. The auxiliary power source 30 can be connected to the telephone body 10 so as not to be bulky.

  When the telephone body 10 is set to the auxiliary power source 30, the auxiliary power source 30 is connected to the built-in battery pack 20 via the connector 34 and the sub connection terminal 23. Since the internal battery pack 20 is connected to the telephone main body 10 via the sub connection terminal 23 and the power supply terminal 14, the power of the auxiliary power supply 30 is supplied to the telephone main body 10 via the internal battery pack 20.

  Furthermore, the auxiliary power supply 30 in FIG. 6 has a built-in charge control circuit 33 for charging the auxiliary battery 31. The charge control circuit 33 controls the voltage and current of power supplied from the AC adapter 40 to fully charge the auxiliary battery 31. The auxiliary battery 31 is an AA type secondary battery. This secondary battery is a nickel metal hydride battery or a nickel cadmium battery. The number of secondary batteries is set such that the voltage of the auxiliary battery 31 is substantially equal to or slightly higher than the voltage of the built-in battery 21. When the built-in battery 21 is a lithium ion secondary battery and the secondary battery of the auxiliary battery 31 is a nickel metal hydride battery or a nickel cadmium battery, the number of secondary batteries is three. Since the rated voltage of the nickel metal hydride battery or nickel cadmium battery is 1.2V, three are connected in series and the output voltage is 3.6V. However, the number of secondary batteries used for the auxiliary battery is adjusted to an optimum number depending on the type and number of built-in batteries. Moreover, a lithium ion secondary battery can also be used for the secondary battery of an auxiliary battery.

  The charge control circuit 33 of the auxiliary power supply 30 fully charges the nickel metal hydride battery or the nickel cadmium battery by constant current charging. When the voltage of the auxiliary battery 31 rises to the peak voltage or the ΔV voltage drops from the peak voltage, the charging is stopped as full charge. A signal indicating whether or not the auxiliary battery 31 is charged by the charge control circuit 33 is input from the control circuit 24. Further, a signal indicating whether or not the auxiliary battery 31 is being charged can be transmitted from the charging control circuit 33 to the control circuit 24.

  The mobile phone described above has a structure in which the auxiliary battery 31 of the auxiliary power source 30 is charged via an external power source connected to the external charging terminal 12 of the telephone body 10. The mobile phone having this structure has a feature that it can charge both the internal battery 21 of the internal battery pack 20 and the auxiliary battery 31 of the auxiliary power source 30 with one external power source. However, the mobile phone of the present invention can charge the auxiliary battery 31 of the auxiliary power supply 30 with a dedicated external power supply, as shown in FIG.

  The auxiliary power supply 30 shown in FIG. 9 includes a sub charging terminal 37 for connecting an AC adapter 50 that is an external power supply for charging the auxiliary battery 31. The sub charging terminals 37 are two terminals including a negative side terminal and a positive side terminal. The sub charging terminal 37 is connected to the AC adapter 50 via a connector. The sub charging terminal 37 is supplied with power from the AC adapter 50. The AC adapter 50 converts the AC 100 V of the commercial power source into a direct current having a voltage that can fully charge the auxiliary battery 31 and outputs the converted direct current. The electric power supplied from the AC adapter 50 is supplied to the charging control circuit 33. The charging control circuit 33 charges the auxiliary battery 31 by controlling the voltage and current of power supplied from the AC adapter 50.

  Further, the mobile phone can be provided with a charge control circuit for charging the auxiliary battery in the external power source. The mobile phone shown in FIG. 10 has a built-in charge control circuit 53 in an AC adapter 50 that is an external power supply, without providing a charge control circuit in the auxiliary power supply 30. The auxiliary power supply 30 has a simple structure and can efficiently incorporate the auxiliary battery 31.

  As described above, since the mobile phone that charges the auxiliary battery 31 with a dedicated external power supply does not require a circuit for charging the auxiliary battery in the built-in battery pack, the circuit configuration of the built-in battery pack is simplified while being auxiliary. It has the feature that the auxiliary battery of the power supply can be charged. Furthermore, since a dedicated external power source for charging the auxiliary power source is used, the external power source has an optimum structure for charging the auxiliary battery, and the secondary battery of the auxiliary battery can be charged in an ideal state.

  Further, the cellular phone shown in FIGS. 11 to 13 can be attached to and detached from the telephone body 10, the built-in battery pack 20 that is attached to the telephone body 10 so as to be detachable and supplies power to the telephone body 10, and the telephone body 10. And an auxiliary power supply 30 that supplies power to the telephone main body 10.

  The telephone body 10 includes a sub power supply terminal 19 that is exposed to the outside of the case 11 and supplies power to the telephone body 10 from the outside. As shown in the bottom view of FIG. 12, the telephone body 10 includes a sub power terminal 19 that is exposed on the back surface of the case 11 and connects the connector 34 of the auxiliary power source 30. The sub power supply terminal 19 supplies the power supplied from the auxiliary power supply 30 to the telephone body 10. The sub connection terminal 23 is provided so as to be exposed to the outside from the case 11 of the telephone body 10, but does not protrude from the surface of the case 11. Therefore, a recess 18 for inserting the connector 34 is provided in the case 11, and the contact of the sub power supply terminal 19 is disposed in the recess 18. As shown in the circuit diagram of FIG. 13, the sub power supply terminal 19 includes a plus terminal 19A and a minus terminal 19B. The plus terminal 19 </ b> A is a terminal connected to the plus side of the auxiliary battery 31 of the auxiliary power supply 30 and is connected to the power supply line 15 of the telephone body 10.

  As shown in the circuit diagram of FIG. 13, the telephone body 10 has a built-in charge control circuit 13 that controls charging of the built-in battery pack 20. The charging control circuit 13 is connected between the external charging terminal 12 and the built-in battery pack 20, controls the power input from the AC adapter 40, and supplies it to the built-in battery pack 20. The charging control circuit 13 controls the charging voltage and charging current of the lithium ion secondary battery that is the built-in battery 21 built in the built-in battery pack 20 to fully charge the built-in battery pack 20. The charge control circuit 13 charges the built-in battery pack 20 with a constant current to a predetermined voltage, and then charges the built-in battery pack 20 with a constant voltage to fully charge it. When the built-in battery pack 20 is fully charged, the charging current is cut off and charging is stopped. The external charging terminal 12 is supplied with power from the AC adapter 40.

  Furthermore, the telephone body 10 shown in FIG. 13 includes a power terminal 14 connected to the built-in battery pack 20. The power supply terminal 14 includes a minus terminal 14C and two plus terminals. The first plus terminal 14 </ b> A is a terminal connected to the plus side of the built-in battery 21 of the built-in battery pack 20, and is connected to the output side of the charge control circuit 13. The second plus terminal 14 </ b> B is a terminal that supplies power supplied from the built-in battery 21 of the built-in battery pack 20 to the telephone main body 10, and is connected to the power line 15 of the telephone main body 10.

  The telephone body 10 shown in the figure has a branching power line 15. The first power line 15 A is connected to the second positive terminal 14 B of the power terminal 14, and the second power line 15 B is connected to the positive terminal 19 A of the sub power terminal 19. Is connected to each.

  The built-in battery pack 20 includes a built-in battery 21 that supplies power to the telephone body 10 as shown in the circuit diagram of FIG. Further, the internal battery pack 20 includes an output terminal 22 that is electrically connected to the power terminal 14 of the telephone body 10. The output terminal 22 is connected to the power supply terminal 14 inside the telephone body 10. The output terminal 22 has three terminals, and is composed of a negative terminal and two positive terminals.

  The auxiliary power supply 30 has an auxiliary battery 31 built in the case 32 and a connector 34 that protrudes from the upper surface of the case 32 and is connected to the sub power supply terminal 19 of the telephone body 10 so as to be detachable. The connector 34 is structured to be mechanically and electrically connected to the sub power supply terminal 19. As shown in the circuit diagram of FIG. 13, the auxiliary power source 30 includes a sub output terminal 36 that is electrically connected to the sub power source terminal 19 of the telephone body 10, and contacts of the sub output terminal 36 are arranged on the connector 34. is doing.

  The auxiliary battery 31 built in the auxiliary power source 30 is charged by a dedicated external power source. The auxiliary power supply 30 in FIG. 11 is provided with a sub-charging terminal 37 on the side surface of the case 32 for connecting an external power supply for charging the auxiliary battery 31. As shown in FIG. 13, the sub charging terminal 37 is two terminals including a minus side terminal and a plus side terminal. The sub charging terminal 37 is connected to the AC adapter 50 via a connector. The sub charging terminal 37 is supplied with power from the AC adapter 50. The AC adapter 50 converts the AC 100 V of the commercial power source into a direct current having a voltage that can fully charge the auxiliary battery 31 and outputs the converted direct current.

  Furthermore, the auxiliary power supply 30 in FIG. 13 includes a charging control circuit 33 for charging the auxiliary battery 31. The charging control circuit 33 controls the voltage and current of power supplied from the AC adapter 50 to fully charge the auxiliary battery 31. The auxiliary battery 31 is an AA type secondary battery. This secondary battery is a nickel metal hydride battery or a nickel cadmium battery. The number of secondary batteries is set such that the voltage of the auxiliary battery 31 is substantially equal to or slightly higher than the voltage of the built-in battery 21. When the built-in battery 21 is a lithium ion secondary battery and the secondary battery of the auxiliary battery 31 is a nickel metal hydride battery or a nickel cadmium battery, the number of secondary batteries is three. Since the rated voltage of the nickel metal hydride battery or nickel cadmium battery is 1.2V, three are connected in series and the output voltage is 3.6V. However, the number of secondary batteries used for the auxiliary battery is adjusted to an optimum number depending on the type and number of built-in batteries. Moreover, a lithium ion secondary battery can also be used for the secondary battery of an auxiliary battery. The charge control circuit 33 of the auxiliary power supply 30 fully charges the nickel metal hydride battery or the nickel cadmium battery by constant current charging. When the voltage of the auxiliary battery 31 rises to the peak voltage or the ΔV voltage drops from the peak voltage, the charging is stopped as full charge.

  However, the mobile phone can also be provided with a charge control circuit for charging the auxiliary battery in the external power source. The mobile phone shown in FIG. 14 has a built-in charge control circuit 53 in an AC adapter 50 that is an external power supply without providing a charge control circuit in the auxiliary power supply 30. The auxiliary power supply 30 has a simple structure and can efficiently incorporate the auxiliary battery 31.

  Further, the auxiliary power supply 30 of FIG. 11 is provided with a locking hook 35 that locks the telephone body 10 attached to a fixed position. The auxiliary power source 30 can be arranged at a fixed position so as not to remove the telephone body 10 set on the upper surface. When the telephone main body 10 is set to the auxiliary power supply 30, the auxiliary power supply 30 is connected to the telephone main body 10 via the connector 34 and the sub power supply terminal 19, and the power of the auxiliary battery 31 is supplied to the telephone main body 10.

  Furthermore, the mobile phone shown in FIG. 13 includes a non-charging circuit that prevents the built-in battery 21 from being charged with power supplied from the sub power supply terminal 19 to the phone body 10. In the illustrated mobile phone, a diode is connected as a non-charging circuit so that the auxiliary battery 31 of the auxiliary power supply 30 does not charge the internal battery 21. The cellular phone shown in the figure includes a first diode 26A and a second diode 26B as a non-charging circuit. The first diode 26 </ b> A prevents the auxiliary battery 31 of the auxiliary power supply 30 from charging the internal battery 21, and the second diode 26 </ b> B prevents the internal battery 21 from charging the auxiliary battery 31 of the auxiliary power supply 30. In this mobile phone, the built-in battery 21 supplies power to the phone body 10 via the first diode 26A, and the auxiliary battery 31 supplies power to the phone body 10 via the second diode 26B. The built-in battery 21 and the auxiliary battery 31 are connected in parallel via the diode 26 and supply power to the telephone body 10.

  The mobile phone shown in FIG. 13 is provided with a first diode 26 </ b> A in the built-in battery pack 20. The first diode 26A in the figure is connected in a direction in which power can be supplied from the internal battery 21 to the output terminal 22 connected to the first power supply line 15A. The first diode 26 </ b> A passes a current from the built-in battery 21 toward the telephone body 10, but does not flow a current in the opposite direction. That is, the first diode 26 </ b> A blocks the charging current for the auxiliary battery 31 to charge the internal battery 21. Therefore, even if the auxiliary battery 31 has a higher voltage than the built-in battery 21, the high-voltage auxiliary battery 31 does not charge the low-voltage built-in battery 21. The cellular phone shown in the figure has a first diode 26A connected between the built-in battery 21 and the output terminal 22, and the first diode 26A is connected to the first power line of the phone body as shown by the chain line in the figure. It can also be connected to 15A. The first diode 26A connected to the first power supply line 15A is connected in a direction in which power can be supplied from the power supply terminal 14 toward the connection point between the first power supply line 15A and the second power supply line 15B.

  Further, the mobile phone shown in FIG. 13 includes a second diode 26 </ b> B in the auxiliary power supply 30. The second diode 26B in the figure is connected in a direction in which power can be supplied from the auxiliary battery 31 to the sub power supply terminal 19 connected to the second power supply line 15B. The second diode 26 </ b> B passes a current from the auxiliary battery 31 toward the telephone body 10, but does not flow a current in the opposite direction. That is, the second diode 26 </ b> B blocks a charging current for the built-in battery 21 to charge the auxiliary battery 31. Therefore, even if the built-in battery 21 has a higher voltage than the auxiliary battery 31, the high-voltage built-in battery 21 does not charge the low-voltage auxiliary battery 31. The mobile phone shown in the figure has a second diode 26B connected between the auxiliary battery 31 and the sub output terminal 36. The second diode 26B is connected to the second power supply line of the phone main body as shown by the chain line in the figure. It can also be connected to 15B. The second diode 26B connected to the second power supply line 15B is connected in a direction in which power can be supplied from the sub power supply terminal 19 toward the connection point between the first power supply line 15A and the second power supply line 15B.

1 is a perspective view of a mobile phone according to an embodiment of the present invention. It is a disassembled perspective view of the mobile phone shown in FIG. It is a side view of the mobile phone shown in FIG. It is a bottom view of the mobile phone shown in FIG. It is a bottom view of the telephone main body shown in FIG. 1 is a circuit diagram of a mobile phone according to an embodiment of the present invention. FIG. 4 is an enlarged cross-sectional view of a sub connection terminal portion of the mobile phone shown in FIG. 3. Expansion of sub-connecting terminal portion of mobile phone according to another embodiment of the present invention It is a circuit diagram of the mobile telephone concerning the other Example of this invention. It is a circuit diagram of the mobile telephone concerning the other Example of this invention. It is a disassembled perspective view of the mobile telephone concerning the other Example of this invention. It is a bottom view of the telephone main body shown in FIG. It is a circuit diagram of the mobile telephone concerning the other Example of this invention. It is a circuit diagram of the mobile telephone concerning the other Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Telephone main body 11 ... Case 12 ... External charge terminal 13 ... Charge control circuit 14 ... Power supply terminal 14A ... 1st plus terminal
14B ... Second positive terminal
14C ... negative terminal 15 ... power supply line 15A ... first power supply line
15B ... Second power supply line 16 ... Storage part 17 ... Removal cover 17A ... Through hole 18 ... Recess 19 ... Sub power supply terminal 19A ... Plus terminal
19B ... Negative terminal 20 ... Built-in battery pack 21 ... Built-in battery 22 ... Output terminal 23 ... Sub-connection terminal 23A ... First plus terminal
23B ... Second positive terminal
23C ... Negative terminal
23D ... Signal terminal 24 ... Control circuit 25 ... Switch 25A ... First switch
25B ... second switch
25C ... third switch 26 ... diode 26A ... first diode
26B ... second diode 27 ... case 28 ... recess 29 ... lid 30 ... auxiliary power supply 31 ... auxiliary battery 32 ... case 33 ... charge control circuit 34 ... connector 35 ... lock hook 36 ... sub output terminal 37 ... sub charge terminal 40 ... AC adapter 50 ... AC adapter 53 ... Charge control circuit

Claims (14)

In a mobile phone comprising a telephone body (10) and a built-in battery pack (20) having a built-in battery (21) that is detachably attached to the telephone body (10) and supplies power to the telephone body (10) ,
In addition to the output terminal (22) that is electrically connected to the power terminal (14) of the phone body (10), the built-in battery pack (20) is exposed outside the case (27) and the sub connection terminal (23) This sub connection terminal (23) is connected to the output terminal (22) through a non-charging circuit that supplies the output terminal (22) without charging the built-in battery (21) with externally supplied power. And
A mobile phone configured to supply power to the sub-connecting terminal (23) and to supply power to the telephone body (10) through the non-charging circuit and the output terminal (22). A telephone body (10), a built-in battery pack (20) having a built-in battery (21) that is detachably attached to the telephone body (10) and supplies power to the telephone body (10), and a telephone body (10 ) And an auxiliary power source (30) containing an auxiliary battery (31) for supplying power to the
In addition to the output terminal (22) that is electrically connected to the power terminal (14) of the phone body (10), the built-in battery pack (20) has a sub connection terminal (23) that appears outside the case (27). This sub connection terminal (23) is connected to the output terminal (22) via a non-charging circuit that supplies power to the output terminal (22) without charging the built-in battery (21) with power supplied from the auxiliary power supply (30). Connected to
The auxiliary power supply (30) is equipped with a connector (34) that can be connected to the sub connection terminal (23) of the built-in battery pack (20), and the auxiliary power supply (30) is connected to the connector (34) and the sub connection terminal. (23) is connected to the internal battery pack (20), and the auxiliary battery (31) of the auxiliary power supply (30) is connected to the sub-connection terminal (23), non-charging circuit and output terminal (22) of the internal battery pack (20). ) To supply power to the telephone body (10) without charging the built-in battery (21).   The non-charging circuit includes a first diode (26A) that connects the internal battery (21) to the output terminal (22), and a second diode that connects the sub connection terminal (23) to the output terminal (22). 26B), the first diode (26A) is connected in a direction in which power can be supplied from the built-in battery (21) to the output terminal (22), and the second diode (26B) is connected from the sub connection terminal (23). It is connected in the direction that can supply power to the output terminal (22), so that the power supplied from the built-in battery (21) and the sub connection terminal (23) is supplied to the telephone body (10) via the diode (26). The mobile phone according to claim 1 or 2, comprising: The phone body (10) has an external charging terminal (12) that charges the internal battery pack (20).
The auxiliary power source (30) includes a charge control circuit (33) that controls the charging of the auxiliary battery (31) of the secondary battery, and the charge control circuit (33) includes a connector (34) and a sub connection terminal (23). Connected to the internal battery pack (20), and further connected to the external charging terminal (12) via the output terminal (22) of the internal battery pack (20) and the power terminal (14) of the telephone body (10). The mobile phone according to claim 2, wherein the secondary battery of the auxiliary power source (30) is charged via an external power source connected to the external charging terminal (12).   The mobile phone according to claim 4, wherein the internal battery pack (20) includes a control circuit (24) for switching between charging of the internal battery (21) and the auxiliary battery (31). In a mobile phone comprising a telephone body (10) and a built-in battery pack (20) having a built-in battery (21) that is detachably attached to the telephone body (10) and supplies power to the telephone body (10) ,
The telephone body (10) is provided with a sub power terminal (19) that is exposed to the outside of the case (11) and supplies power to the telephone body (10) from the outside.
The built-in battery pack (20) or the phone body (10) has a non-charging circuit that prevents the built-in battery (21) from being charged with power supplied from the sub power terminal (19) to the phone body (10). And
A mobile phone configured to supply electric power to the sub-power supply terminal (19) and supply electric power to the telephone body (10) without charging the internal battery (21) with this electric power. A telephone body (10), a built-in battery pack (20) having a built-in battery (21) that is detachably attached to the telephone body (10) and supplies power to the telephone body (10), and a telephone body (10 ) And an auxiliary power source (30) containing an auxiliary battery (31) for supplying power to the
The telephone body (10) has a sub power terminal (19) that is exposed outside the case (11) and supplies power from the auxiliary power supply (30) to the telephone body (10).
The built-in battery pack (20) or the phone body (10) has a non-charging circuit that prevents the built-in battery (21) from being charged with power supplied from the sub power terminal (19) to the phone body (10). And
The auxiliary power supply (30) has a connector (34) that is detachably connected to the sub power supply terminal (19) of the telephone body (10), and the auxiliary power supply (30) is connected to the connector (34) and the sub power supply terminal ( 19) is connected to the telephone body (10) via the auxiliary battery (31) of the auxiliary power supply (30) to supply power to the telephone body (10) without charging the internal battery (21). Mobile phone.   A non-charging circuit includes a first diode (26A) that connects the internal battery (21) to the output terminal (22), and a second diode that connects the auxiliary battery (31) to the sub output terminal (36). 26B), the first diode (26A) is connected in a direction in which power can be supplied from the built-in battery (21) to the output terminal (22), and the second diode (26B) is connected to the sub battery (31). The power is supplied to the output terminal (36) in a direction in which power can be supplied, and the power supplied from the built-in battery (21) is supplied to the telephone body (10) via the first diode (26A) and from the auxiliary battery (31). The mobile phone according to claim 2 or 7, wherein the supplied electric power is supplied to the telephone body (10) through the second diode (26B). The phone body (10) has an external charging terminal (12) that charges the internal battery pack (20).
The auxiliary power source (30) includes a sub-charge terminal (37) for charging the auxiliary battery (31) of the secondary battery, and a charge control circuit (33) for controlling the charging of the auxiliary battery (31) of the secondary battery. The charging control circuit (33) is provided with a secondary battery of the auxiliary power source (30) via an external power source connected to the sub charging terminal (37). Mobile phone. The phone body (10) has an external charging terminal (12) that charges the internal battery pack (20).
The auxiliary power source (30) has a sub charging terminal (37) for charging the auxiliary battery (31) of the secondary battery, and a charging control circuit provided in the external power source connected to the sub charging terminal (37) The mobile phone according to claim 2 or 7, wherein charging of the auxiliary battery (31) of the auxiliary power supply (30) is controlled via (53).   The mobile phone according to claim 2 or 7, wherein the auxiliary power source (30) is detachably connected to the back surface of the phone body (10) via the locking hook (35). A built-in battery pack for a mobile phone including a built-in battery (21) that is attached to the phone body (10) so as to be detachable and supplies power to the phone body (10),
In addition to the output terminal (22) that is electrically connected to the power terminal (14) of the telephone body (10), it has a sub connection terminal (23) that is exposed to the outside of the case (27). (23) is connected to the output terminal (22) via a non-charging circuit that supplies power to the output terminal (22) without charging the internal battery (21) with power supplied from the outside,
An internal battery pack for a mobile phone configured to supply electric power supplied from the outside to the sub connection terminal (23) to the telephone body (10) via the non-charging circuit and the output terminal (22). For mobile phones that are attached to the back of the phone body (10) and supply power to the phone body (10) and that are detachably attached to the phone body (10) to supply power Auxiliary power supply,
A connector (34) provided with an auxiliary battery (31) for supplying power to the telephone body (10) and mechanically and electrically connected to a sub connection terminal (23) provided on the back surface of the internal battery pack (20). ) And connect this connector (34) to the sub connection terminal (23) to supply power from the auxiliary battery (31) to the phone body (10) via the built-in battery pack (20). Auxiliary power supply for mobile phones. It is an auxiliary power source for a mobile phone that is attached so that it can be attached to and detached from the telephone body (10) to which power is supplied from the built-in battery pack (20) that is attached to the back surface and that supplies power to the telephone body (10). And
A connector (34) that includes an auxiliary battery (31) for supplying power to the telephone body (10) and is mechanically and electrically connected to a sub power terminal (19) provided on the back surface of the telephone body (10). An auxiliary power source for a mobile phone, which is configured to supply power from the auxiliary battery (31) to the telephone body (10) by connecting the connector (34) to the sub power terminal (19).

Images