JP2000245072A - Cordless apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To charge an electric double-layered capacitor in a short time by mounting the electric double-layered capacitor on a charger and a cordless apparatus, and connecting the contact terminals of the cordless apparatus and charger directly. SOLUTION: When the contact 8 of a charger 3 is disconnected from a cordless apparatus 2, the power supply plug 4 of the charger 3 is plugged in AC100 V of a commercial power supply electric outlet, and electric charge is gradually stored in an electric double-layered capacitor 5 through a charging circuit 6 from the commercial power supply unit. The cordless apparatus 2 is set to the charger 3 storing the electric power, and the terminals 19, 19 of the discharge contact part 7 of the charger 3 and the terminals 20, 20 of the discharge contact part 8 of the cordless apparatus 2 are connected directly. As a result, the electric double-layered capacitor 5 of the charger 3 and the electric double- layered capacitor 9 of the cordless apparatus 2 are connected directly, thereby flowing the electric power stored in the charger 3 through the electric double- layered capacitor 9 of the cordless apparatus 2 rapidly. It is thus possible to charge currently required electric power with very little waiting time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electric shaver,
The present invention relates to a cordless device including a cordless device such as a power toothbrush, a tape recorder, a VTR, a camera, a pot, an iron, and a charger for supplying driving power to the cordless device, and particularly used in these cordless devices. The present invention relates to a power supply system.

[0002]

2. Description of the Related Art Conventionally, many electric shavers, power toothbrushes, and the like employ a rechargeable secondary battery such as a nickel cadmium battery or a lithium battery as a power source. This secondary battery is charged and used by a dedicated charger connected to a commercial power supply.

[0003]

However, since it takes a long charging time to supply power to a secondary battery until a conventional cordless device can be used, the cordless device may be in a discharged state or may not be used. When the driver noticed a shortage of driving power during the operation, it was difficult to immediately use the cordless device because charging could not be performed immediately. In addition, this secondary battery has a problem that the cycle life is short or the secondary battery is easily deteriorated due to overcharging if the battery is left connected to the charger beyond a predetermined charging time, further shortening the life. .

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a cordless device having a power source that can be charged in a short time and has a long life as a power supply device, and a cordless device having a charger for charging the device. The purpose is to provide.

[0005]

In order to achieve the above object, according to the present invention, there is provided a cordless device which can be used without a drive power supply cord, and a power supply device for the cordless device. In those having a charger for charging the driving power, the cordless device has a large-capacity electric capacitor as a power supply device, and the charger has a large-capacity electric capacitor and is disconnected from the commercial power supply when disconnected from the cordless device. The large-capacity electric capacitor is charged through the charge control circuit, and the cordless device and the charger each have a direct connection terminal for supplying power from the charger to the cordless device.

According to a second aspect of the present invention, in the cordless apparatus according to the first aspect, the direct connection terminals provided on each of the cordless device and the charger directly connect a large-capacity electric capacitor between the charger and the cordless device. It has a terminal for supplying power.

According to a third aspect of the present invention, the cordless device according to the first aspect includes an electric double layer capacitor as a power supply device.

According to a fourth aspect of the present invention, the charger according to the first aspect includes an electric double layer capacitor as a power supply device.

According to a fifth aspect of the present invention, in the cordless device according to the first aspect, the cordless device is an electric shaver.

According to a sixth aspect of the present invention, in the cordless device according to the first aspect, the cordless device is a camera.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments. FIG. 1 is a circuit block diagram of a cordless device 2 of a cordless device 1 of the present invention and a charger 3 for charging the cordless device 2.

The charger 3 includes a power plug 4 connected to a commercial power supply, a large-capacity capacitor 5 such as an electric double-layer capacitor for storing power supplied from the commercial power supply (hereinafter referred to as an electric double-layer capacitor), Double layer capacitor 5
A charge control circuit 6 for storing power from a commercial power supply and a discharge contact 7 for discharging power stored in the electric double layer capacitor 5 are provided. Discharge contact 7
Are provided with two directly-connected terminals 19, 19 at the tip.

The cordless device 2 receives power from the discharge contact portion 7 of the charger 3 and has a contact portion 8 having two directly connected terminals 20 and 20, and an electric double layer capacitor 9 for storing power.
And a load 11 such as a motor or a heater for operating the cordless device 2. The load 11 is, for example, a motor for moving a blade or a brush for shaving in the case of an electric shaver or a power toothbrush, a tape recorder or a VTR is a power supply for a sound / video recording / recording circuit and a tape drive motor, and a pot or iron is a It is an electric heater for heating. 12 is an electric double layer capacitor 9 and a load 1
1 is a control circuit connected between the control circuit 1 and the power supply circuit 1. The control circuit boosts the power stored in the electric double layer capacitor 9 to a rated voltage for driving the load 11 and supplies the boosted power. An operation stop switch 13 is connected between the control circuit 12 and the load 11 and determines the operation of the cordless device 2.

When the contact portion 8 of the charger 3 is disconnected from the cordless device 2, the power supply plug 4 of the charger 3 is inserted into an outlet of a commercial power supply of AC 100 [V]. , Electric charges are gradually stored in the electric double layer capacitor 5. When the cordless device 2 is set in the charger 3 in which the power is stored in this way, and the discharge contact portions 7 terminals 19 and 19 of the charger 3 are directly connected to the contact portion 8 terminals 20 and 20 of the cordless device 2, The electric double layer capacitor 5 of the charger 3 and the electric double layer capacitor 9 of the cordless device 2 are directly connected, and the power stored in the charger 3 rapidly flows to the electric double layer capacitor 9 of the cordless device 2. The power required for the moment is charged without waiting. In addition, the charger 3
The rated voltage of the electric double layer capacitor 5 of the cordless device 2 is slightly higher than the rated voltage of the electric double layer capacitor 9 of the cordless device 2. The configuration is such that no current flows from the multilayer capacitor 9.

According to the cordless device 1 having such a configuration, even when the cordless device 2 is used, the cordless device 2 is stored in the charger 3 even when the cordless device 2 is aware of the end-of-discharge state.
Furthermore, if the cordless device 2 is directly connected, the battery can be charged immediately, so that the cordless device 2 can be immediately supplied with driving power and used continuously. FIG. 2 is an example of a specific electric circuit diagram of FIG. 1, and shows an example using a motor as a load. The same components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The charging control circuit 6 of the charger 3 converts the electric power supplied from the commercial power supply into a voltage and a current for charging the electric double layer capacitor 5 provided in the charger 3 to a desired amount of electricity. A circuit for rectifying and stepping down and a current fuse 14 for protecting the charge control circuit 6 are provided. Reference numeral 15 denotes, for example, a diode bridge for rectifying a current supplied from a commercial power supply of AC 100 [V], reference numeral 16 denotes a smoothing capacitor, reference numeral 17 denotes a switching transistor, reference numeral 18 denotes a current detection resistor, and reference numeral 21 denotes a control IC for controlling the switching transistor 17. , 22 are transformers, and 23 is a rectifying diode.

Electricity supplied from a commercial power supply is once rectified by a diode bridge 15 and then smoothed by a smoothing capacitor 16 to be DC. This direct current is controlled by the control IC 21. The power is applied to the primary side of the transformer 22 as alternating power by the switching transistor 17, stepped down from the secondary side of the transformer 22, rectified by the diode 23, and stored in the electric double layer capacitor 5.

In the present embodiment, the control circuit 12 of the cordless device 2 comprises a constant voltage circuit 24 and a motor control circuit 25.

In the motor control circuit 25, the motor of the load 11 is controlled by the constant voltage DC power supplied from the constant voltage circuit 24.

9 of the constant voltage circuit 24 is an electric double layer capacitor, 26 is a first switching element, 27 is a diode, 28 is a reactor, 31 is a second switching element, and 32 is a control I for controlling the switching element.
C and 33 are smoothing capacitors. Cordless device 2
In use, the voltage of the electric power of the electric double layer capacitor 9 decreases with the discharge. Therefore, a constant voltage circuit 24 is provided to supply a stable voltage to the load 11.

When the electric double layer capacitor 9 is higher than the rated voltage of the load 11, the first switching element 26 is turned on in the constant voltage circuit 24, and the second switching element 31 is controlled by switching by the control IC 32. You. When the second switching element 31 is off, the power of the electric double layer capacitor 9 is dropped by the reactor 28, the electrostatic energy is stored in the smoothing capacitor 33, and the power is supplied to the load 11. Next, when the second switching element 31 is turned on, the electric power of the electric double layer capacitor 9 is returned through the reactor 28 and the second switching element 31 and is not supplied to the load 11. During this time, power is supplied to the load 11 by discharging the smoothing capacitor 33. The voltage of the electric double layer capacitor 9 is gradually reduced by being supplied to the load 11, but the constant-voltage power is supplied to the load 11 by controlling the ON / OFF time of the second switching element 31 in accordance with the decrease. Can supply.

When the electric double layer capacitor 9 becomes lower than the rated voltage of the load 11, the second switching element 31 is turned off in the constant voltage circuit 24, and the first switching element 26 is switched by the control IC 32. Controlled. When the first switching element 26 is on, the electric power of the electric double layer capacitor 9 is supplied to the load 11 and the electromagnetic energy stored in the reactor 28 and the electrostatic energy stored in the smoothing capacitor 33 are loaded. Supplied to First switching element 26
Is turned off, the electromagnetic energy of the reactor 28 is emitted through the diode 27. The power is continuously supplied to the load 11 by the energy stored in the reactor 28 and the smoothing capacitor 33 during the ON / OFF of the first switching element 26. The voltage of the electric double layer capacitor 9 is gradually reduced by being supplied to the load 11, but the constant-voltage power is supplied to the load 11 by controlling the ON / OFF time of the second switching element 31 in accordance with the decrease. Can supply.

As described above, the cordless device 2 and the charger 3
By using the electric double-layer capacitors 5 and 9, the electric double-layer capacitor 5 can be small and quickly charged,
Moreover, the cordless device 1 having a long life can be obtained.

[0024]

As described above, according to the first, second, third or fourth aspect of the present invention, an electric double layer capacitor is provided for a charger charged from a commercial power supply, and an electric double layer capacitor is provided for a cordless device. And by directly connecting the power stored in the charger to the contact terminals of the cordless device and the charger, the electric double layer capacitor of the cordless device can be charged in a short time. If the cordless device is in a discharged state immediately before use, or if you notice a shortage of driving power during use, you can charge the cordless device from the immediate charger and use it, reducing the time and effort required for charging. .

According to the fifth or sixth aspect of the present invention, when the cordless device is in a discharged state immediately before use or when the driver notices a shortage of driving power during use, the cordless device is charged from the immediate charger. Since it can be used, the time required for charging can be reduced. It is easy to use for cordless devices such as electric shavers, cameras, power toothbrushes, and pots that you want to use immediately when you want to use them. Further, since the electric double layer capacitor is small and lightweight and has a long life and is hardly deteriorated, the use of the electric double layer capacitor makes the device small and lightweight and excellent in maintainability.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of a cordless device of a cordless device of the present invention and a charger for charging the cordless device.

FIG. 2 is a specific electric circuit diagram in the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cordless apparatus 2 Cordless equipment 3 Charger 5, 9 Electric double layer capacitor 6 Charge control circuit 7 Discharge contact part 8 Contact part 19, 20 Direct connection terminal

Claims (6)

[Claims] 1. A cordless device which can be used without a drive power supply cord and a charger for charging a drive power to a power supply device of the cordless device, wherein the cordless device is a large power supply device. A capacitor having a large-capacity electric capacitor, and the charger is configured to be charged from the commercial power supply to the large-capacity electric capacitor via a charge control circuit when the charger is disconnected from the cordless device, A cordless device characterized in that the cordless device and the charger each have a direct connection terminal for supplying power from the charger to the cordless device. 2. The terminal according to claim 1, wherein the direct connection terminals provided on each of the cordless device and the charger are terminals for directly connecting a large-capacity electric capacitor between the charger and the cordless device to supply power. Cordless device. 3. The cordless device according to claim 1, wherein the cordless device includes an electric double layer capacitor as a power supply device. 4. The cordless device according to claim 1, wherein the charger includes an electric double layer capacitor as a power supply device. 5. The cordless device according to claim 1, wherein the cordless device is an electric shaver. 6. The cordless device according to claim 1, wherein the cordless device is a camera.