JP3829486B2 - Portable electronic devices - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable electronic device.
[0002]
[Prior art]
A conventional cellular phone as a conventional portable electronic device will be described below with reference to FIG. Reference numeral 1A denotes a circuit of a mobile phone as a power source voltage supply unit, and a discharge terminal (device-side discharge terminal) 13 and a ground terminal (device-side common terminal) 14 are led out from the circuit 1A of the mobile phone. Reference numeral 12 denotes a charging terminal (device-side charging terminal).
[0003]
Reference numeral 11 denotes a jack (external power input terminal) that is derived from the charging terminal 12 and the ground terminal 14 and to which a DC voltage from an external power source (external DC power source) 7 is applied. This external power source 7 includes an AC adapter 9, an AC plug 8 is connected to a 100V commercial AC voltage input terminal of the AC adapter 9, and a pin plug (external power output terminal) 10 is connected to the DC voltage output terminal. Is the case. And the pin plug 10 of the external power supply 7 is comprised so that it can couple | bond with the jack 11 of the apparatus main body side.
[0004]
4 is a battery pack (battery pack), a pack discharge terminal 17, a pack charge terminal 16, a pack ground terminal (pack side common terminal) 18, a battery cell connected between the pack discharge terminal 17 and the pack ground terminal 18 (in series connection). And a secondary charging circuit (a charging circuit having a DC voltage stabilizing circuit) 19A connected between the pack charging terminal 16 and the pack ground terminal 18. I have.
[0005]
When the battery pack 4 is loaded into the mobile phone body, the pack discharge terminal 17, the pack charge terminal 16 and the pack ground terminal 18 of the battery pack 4 are respectively connected to the discharge terminal 13, the charge terminal 12 and the ground on the apparatus body side. Connect to terminal 14. Then, the pin plug 10 and the jack 1 are coupled.
[0006]
Then, the DC voltage from the external power source 7 is applied to both ends of the series circuit of the charging secondary circuit 19 and the battery cell 20 of the mobile phone, and the battery cell 20 is charged.
[0007]
When charging of the battery cell 20 is completed, the pin plug 10 is detached from the jack 11. Thus, the DC voltage from the battery cell 20 of the battery pack 4 is applied to the circuit 1A of the mobile phone.
[0008]
[Problems to be solved by the invention]
For example, even when the pin plug 10 of the external power supply 7 is coupled to the jack 11 in a state where the battery pack 4 is detached from the conventional mobile phone of FIG. 3, the DC voltage from the external power supply 7 is applied to the mobile phone. Cannot be applied to the circuit 1A. For this reason, for example, it is inconvenient when a mobile phone is examined by a tester.
[0009]
Incidentally, when the charging circuit 19 </ b> A is outside the battery pack 4, the device-side charging terminal 12 and the device-side discharging terminal 13 can be made common, so that such a problem does not occur.
[0010]
In view of such points, the present invention is derived from the device-side discharge terminal and the device-side common terminal, the device-side charging terminal, the device-side charging terminal, and the common terminal, which are derived from the power source voltage supply unit, and external DC A rechargeable battery having a device-side power supply terminal to which a DC voltage from a power supply is applied and connected between a pack-side discharge terminal, a pack-side charge terminal, a pack-side common terminal, a pack-side discharge terminal, and a pack-side common terminal And a battery pack provided with a charging circuit connected between the pack-side charging terminal and the pack-side discharging terminal, the pack-side discharging terminal of the battery pack, the pack-side charging terminal and the pack-side common terminal are the device-side discharging terminal, The battery pack is charged by applying a DC voltage from an external DC power supply to the device-side power supply terminal while being connected to the device-side charging terminal and the device-side common terminal. Even when a DC voltage from an external DC power source is applied to the device-side power supply terminal after the battery pack is removed from the device main body in the portable electronic device that can be used, the It is intended to propose a device to which a DC voltage can be applied.
[0011]
[Means for Solving the Problems]
The portable electronic device according to the present invention is derived from the device-side discharge terminal and device-side common terminal derived from the power source voltage supply unit, the device-side charging terminal, the device-side charging terminal and the common terminal, respectively, and external DC A device-side power supply terminal to which a DC voltage from the power supply is applied, and switching means connected between the device-side charge terminal and the device-side discharge terminal; a pack-side discharge terminal, a pack-side charge terminal, and a pack-side common terminal A battery pack having a rechargeable battery connected between the pack-side discharge terminal and the pack-side common terminal, and a charging circuit connected between the pack-side charge terminal and the pack-side discharge terminal. When the electronic device main body is loaded so that the pack-side charging terminal and the pack-side common terminal are connected to the device-side discharge terminal, the device-side charging terminal, and the device-side common terminal, respectively. Switching means is turned off, when the break away of the battery pack from the electronic device body is obtained by such switching means is turned on.
[0012]
According to the present invention, since the switching means is turned off when the battery pack is loaded in the main body of the electronic device, the DC voltage from the external DC power source is applied to the device side power supply terminal, the charging circuit of the battery pack and the rechargeable battery. It can be applied to the series circuit and the rechargeable battery can be charged.
[0013]
Also, when the battery pack is removed from the main body of the electronic device, the switching means is turned on, so when the DC voltage from the external DC power supply is applied to the device side power supply terminal, the DC voltage is applied to the power supply voltage supply unit. can do.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a device-side discharge terminal and a device-side common terminal derived from a power supply voltage supply unit, a device-side charging terminal, a device-side charging terminal and a common terminal, and a DC voltage from an external DC power source. Has a device-side power supply terminal and switching means connected between the device-side charge terminal and the device-side discharge terminal, the pack-side discharge terminal, the pack-side charge terminal, the pack-side common terminal, and the pack-side discharge terminal And a rechargeable battery connected between the pack side common terminals and a battery pack provided with a charging circuit connected between the pack side charge terminal and the pack side discharge terminal, a pack side discharge terminal, a pack side charge terminal of the battery pack And the pack-side common terminal are connected to the device-side discharge terminal, the device-side charging terminal, and the device-side common terminal, respectively, when the electronic device main body is loaded, switching means It is turned off, when the break away of the battery pack from the electronic device body, a portable electronic device as switching means is turned on.
[0015]
[Specific Examples of Embodiments of the Invention]
A mobile phone as a specific example of the embodiment of the present invention will be described below with reference to FIGS. 2A and 1. In FIG. 2A and FIG. 1, portions corresponding to those in FIG. In the following description, FIG. 2A will be mainly described, and portions that could not be described in FIG. 2A will be described with reference to FIG.
[0016]
Reference numeral 1A denotes a circuit of a mobile phone as a power source voltage supply unit, and a discharge terminal (device-side discharge terminal) 13 and a ground terminal (device-side common terminal) 14 are led out from the circuit 1A of the mobile phone. Reference numeral 12 denotes a charging terminal (device-side charging terminal). As shown in FIG. 1, a terminal board 3 is provided on a device main body (mobile phone main body) 21, a terminal portion 2 is provided at one end of the terminal substrate 3, and the above-described terminals are connected to the terminal portion 2. 12, 13, and 14 are provided. These terminals 12, 13, and 14 are both constituted by leaf springs.
[0017]
A cellular phone circuit 1A corresponds to the main circuit 5 provided on the device main body 21 as shown in FIG. 1, and is a baseband circuit for processing signals to be transmitted and received, a transmitting circuit for transmitting radio waves, and a high-frequency circuit for receiving radio waves. Etc. As shown in FIG. 1, an exterior portion 6 is provided at the end of the device main body 21, and an antenna, a liquid crystal display device, a speaker, a microphone, and the like (not shown) are fixed to the exterior portion 6.
[0018]
Reference numeral 11 denotes a jack (device-side power supply voltage input terminal), which is led out from the charging terminal 12 and the ground terminal 14, and is applied with a DC voltage from an external power supply (external DC power supply) 7. As shown in FIG. 1, the jack 11 is provided on the surface of the terminal portion 2 opposite to the terminals 12, 13, and 14. The external power supply 7 includes an AC adapter 9, the AC plug 8 is connected to the 100 V commercial AC voltage input terminal of the AC adapter 9, and the pin plug (DC power supply voltage output terminal) 10 is connected to the DC voltage output terminal. It is. The pin plug 10 of the external power supply 7 is coupled to the equipment-side jack 11 so that the power supply voltage from the external power supply 7 is applied to the equipment body 21 side.
[0019]
4 is a battery pack (battery pack), a pack discharge terminal (pack side discharge terminal) 17, a pack charge terminal (pack side charge terminal) 16, a pack ground terminal (pack side common terminal) 18, a pack discharge terminal 17 and a pack ground. A battery cell (consisting of a plurality of rechargeable batteries connected in series and packed as a whole) 20 connected between the terminals 18 and a DC voltage stable connected between the pack charging terminal 16 and the pack ground terminal 18 A charging secondary circuit (charging circuit) 19A including the circuit (provided on the charging secondary circuit board 19 shown in FIG. 1) is provided.
[0020]
As shown in FIGS. 2A and 1, the battery pack 4 is turned off when the battery pack 4 is loaded in the device main body 21 between the charging terminal 12 and the discharge terminal 13, and turned on when the battery pack 4 is removed from the device main body 21. A switch (switching means) (microswitch) 15 is connected.
[0021]
Instead of providing this switch 15, as shown in FIG. 2B and FIG. 1, the metal lead 23 connected to the discharge terminal 13 is provided as a fixed terminal in the terminal portion 2, and the charging terminal 12 is shaped like a leaf spring, and a part thereof Is a contact (movable contact) 24, and when the battery pack 4 is loaded into the device main body 21, the contact 24 is separated from the metal lead 23. When the battery pack 4 is detached from the device main body 21, the contact 24 is a metal lead. 23 may be contacted. The contact 24 and the metal lead 23 constitute a leaf switch.
[0022]
Furthermore, instead of the switch 15, a semiconductor switching element such as an FET (field effect transistor) is provided and connected between the charging terminal 12 and the discharging terminal 13, and when the battery pack 4 is detached from the device body 21, When the semiconductor switching element is turned on and the battery pack 4 is loaded in the device main body 21, a detection means for detecting that a current flows from the battery cell 20 to the circuit 1A of the mobile phone is provided. The semiconductor switching element may be turned off.
[0023]
When the battery pack 4 is loaded into the device main body (mobile phone main body) 21, as shown in FIG. 1, the battery pack 4 is slid onto a pair of battery receivers 22 and 22 provided on the device main body 21, and parallel to each other. The pack discharge terminal 17, the pack charge terminal 16, and the pack ground terminal 18 of the battery pack 4 are electrically connected to the discharge terminal 13, the charge terminal 12, and the ground terminal 14, respectively, on the device body 21 side.
[0024]
At this time, in the case of the switch (microswitch) 15, when the battery pack 4 is not loaded in the device main body 21, the switch 15 is on, and by loading the battery pack 4 into the device main body 21, The battery pack 4 operates an operator (not shown) of the switch 15 so that the switch 15 is turned off. Thereafter, the pin plug 10 and the jack 1 are coupled.
[0025]
When the battery pack 4 is loaded in the device main body 21 and the switch 15 is turned off, the DC voltage from the external power supply 7 is applied to the charging secondary circuit 19 of the portable telephone and the series circuit of the battery cell 20. The battery cell 20 is charged by being applied to both ends.
[0026]
In the case of a leaf switch including the metal lead 23 and the contact 24, the charging terminal 12, that is, the contact 24 is in contact with the metal lead 23 when the battery pack 4 is not loaded in the device main body 21. When the battery pack 4 pushes the charging terminal 12, that is, the contact 24 by loading the pack 4 into the device main body 21, the contact 24 is separated from the metal lead 23, and the switch composed of the contact 24 and the metal lead 23 is turned off.
[0027]
When the battery pack 4 is loaded into the device main body 21 and the contact 24 is separated from the metal lead 23, the DC voltage from the external power source 7 is applied to the charging secondary circuit 19 and the battery cell 20 of the portable telephone. The battery cell 20 is charged by being applied to both ends of the series circuit.
[0028]
When charging of the battery cell 20 is completed, the pin plug 10 is detached from the jack 11. Thus, the DC voltage from the battery cell 20 of the battery pack 4 is applied to the circuit 1A of the mobile phone.
[0029]
When the battery pack 4 is removed from the device main body 21, the switch (leaf switch) including the switch (microswitch) 15 or the contact 24 and the metal lead 23 is turned on. In this state, when the pin plug 10 of the external power supply 7 is coupled to the jack 11, the DC voltage from the external power supply 7 is applied to the circuit 1A of the mobile phone. Therefore, for example, it is convenient when a mobile phone in an operating state is examined with a tester.
[0030]
The portable electronic device is not limited to the above-described mobile phone, and may be a portable tape recorder, a portable mini-disc reproducing device, a recording / reproducing device, or the like.
[0031]
【The invention's effect】
According to the present invention described above, the device-side discharge terminal and the device-side common terminal derived from the power source voltage supply unit, the device-side charge terminal, and the device-side charge terminal and the common terminal are derived from the external DC power supply, respectively. A device-side power supply terminal to which a DC voltage is applied, and a switching means connected between the device-side charging terminal and the device-side discharging terminal, a pack-side discharging terminal, a pack-side charging terminal, a pack-side common terminal, A battery pack including a rechargeable battery connected between the pack-side discharge terminal and the pack-side common terminal, and a charge circuit connected between the pack-side charge terminal and the pack-side discharge terminal; a pack-side discharge terminal of the battery pack; When the electronic device body is loaded so that the pack-side charging terminal and the pack-side common terminal are connected to the device-side discharge terminal, the device-side charging terminal, and the device-side common terminal, respectively, When the switching means is turned off and the battery pack is removed from the main body of the electronic device, the switching means is turned on, so after the battery pack is removed from the main body, the device side power terminal is connected to the external DC power supply. Even when a DC voltage is applied, a portable electronic device that can apply the DC voltage to the power source voltage supply unit can be obtained. Therefore, it is convenient when, for example, a portable electronic device is examined with a tester.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a mobile phone as a specific example of a portable electronic device according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a circuit of the mobile phone in FIG.
FIG. 3 is a block diagram showing a circuit of a conventional cellular phone.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 2 ... Terminal part, 3 ... Terminal board, 4 ... Battery pack, 5 ... Main circuit, 6 ... Exterior part, 7 ... External power supply, 8 ... AC plug, 9 ... AC adapter, 10 ... Pin plug, 11 DESCRIPTION OF SYMBOLS ... Jack, 12 ... Charge terminal, 13 ... Discharge terminal, 14 ... Ground terminal, 15 ... Switch, 16 ... Pack charge terminal, 17 ... Pack discharge terminal, 18 ... Pack ground terminal, 19 ... Charge secondary circuit board, 20 ... Battery cell, 21 ... device main body, 22 ... battery receiver, 23 ... metal lead (fixed contact), 24 ... contact (movable contact)

Claims (1)

A device-side discharge terminal and a device-side common terminal derived from the power source voltage supply unit;
The device side charging terminal,
A device-side power supply terminal that is derived from the device-side charging terminal and the common terminal, and to which a DC voltage from an external DC power supply is applied;
Switching means connected between the device side charging terminal and the device side discharge terminal,
Pack side discharge terminal, pack side charge terminal, pack side common terminal, rechargeable battery connected between pack side discharge terminal and pack side common terminal, and connected between pack side charge terminal and pack side discharge terminal In the battery pack provided with the charging circuit, the pack side discharge terminal, the pack side charge terminal, and the pack side common terminal of the battery pack are common to the device side discharge terminal, the device side charge terminal, and the device side, respectively. When the electronic device main body is loaded so as to be connected to a terminal, the switching means is turned off, and when the battery pack is removed from the electronic device main body, the switching means is turned on. Portable electronic devices.

Images