JPH09322416A - Noncontact type charging equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging equipment which can easily perform the short- time charge by large currents, and also is easy to take waterproof structure, etc., and besides does not cause spark discharge, etc., in coupling between the charger and the body of an apparatus or at the separation, and is easy of clean ing, too. SOLUTION: A charger has a charging circuit 1 consisting of an inverter within, and the output of the inverter is received with the brush body of an electromotive tooth by the magnetic coupling between primary winding L1 and secondary winding L2 built in the brush body of the electromotive tooth. The brush body of the electromotive tooth has a polyacene secondary battery C4 within, and this polyacene secondary battery C4 is charged with the output from the secondary winding L2 . This charge is controlled by a charge control circuit 2. The polyacene secondary battery C4 , when the operation switch SW is turned on, is connected to a motor M through the control circuit 3, and it serves as the power source of the motor M. The control circuit 3 operates to stabilize the voltage across the motor M by switching.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact type charging device for charging a polyacene secondary battery.

[0002]

2. Description of the Related Art Conventionally, as a device using a large-capacity storage element (electric double layer capacitor) as a power source, it has been practically used as a machine.
There are electric shavings such as those disclosed in Japanese Utility Model Publication No. 9863 and Japanese Utility Model Publication No. 3-92472. These electric shave
Although it is possible to charge the battery for a short time by using the electric double layer capacitor, there is a problem that the device body becomes large and heavy because the charger is built in the device body.

[0003]

Therefore, it is conceivable that the charger and the main body of the device are separated and connected via a mechanical contact. However, using the polyacene secondary battery as described above requires a large current ( 30-40A) is characterized by enabling short-time charging, and therefore mechanical contacts are required to have a large contact capacity and be structurally robust.
Further, there was a risk of spark discharge when the device body was connected to or disconnected from the charger. In particular, in the case of a water supply device such as an electric toothbrush, there is a problem that the influence of electric contact cannot be avoided, and therefore a protection circuit is required and the cost becomes high. In addition, the contact part is easily clogged with dust and not only difficult to clean, but also the problem that the contact part becomes dirty and deteriorates the conduction performance, and the charger itself is also required to have high insulation performance because the contact part is exposed. Therefore, there is a problem that the number of circuit parts increases and becomes complicated. Further, in the contact type, there is a problem that it is difficult to provide a stationery function for charging different devices with the same charger due to the restriction of the contact shape.

The present invention has been made in view of the above problems, and it is an object of the present invention to easily charge a battery for a short time with a large current and to easily provide a waterproof structure. Another object of the present invention is to provide a non-contact type charging device in which spark discharge or the like does not occur when the charger and the device body are coupled or separated from each other, and which is easy to clean. An object of the invention of claim 2 is to provide a non-contact type charging device capable of charging a plurality of devices of the same model or devices of different models using the same charger.

An object of the third aspect of the present invention is to provide a non-contact type charging device in which the remaining capacity of the polyacene secondary battery can be known on the device body side. An object of the invention of claim 4 is to provide a non-contact type charging device capable of utilizing the capacity of the polyacene secondary battery more than sufficiently while eliminating the loss. An object of the invention of claim 5 is to provide a non-contact type charging device capable of performing charging control corresponding to the capacity of the polyacene secondary battery on the device body side regardless of the charger side.

It is an object of the invention of claim 6 to provide a non-contact type charging device which facilitates tooth brushing measures for an electric toothbrush and management of tooth brushing time, and is capable of being used by a large number of people in public institutions. There is. Another object of the present invention is to provide a non-contact type charging device that can be made smaller and lighter by using a polyacene secondary battery, which is a device having a higher density than an electric field capacitor or the like. It is in.

[0007]

In order to achieve the above object, in the invention of claim 1, the charger and the device main body containing the polyacene secondary battery are separated into a separate body, and the charger and the device main body are separated from each other. Since the device body is provided with a power receiving means for receiving the output of the charger side in a non-contact manner to charge the polyacene secondary battery when the battery is connected and arranged, a contact for electrically connecting the charger and the device body Since no part is required, a large charging current can be easily secured, and the structure of the charger and the device body can be easily made waterproof, and the charger and the device body can be combined and arranged. At the time of separation from the connected state, spark discharge does not occur, dust is not collected at the contact portion, and cleaning is easy. Furthermore, since a polyacene secondary battery is used, so-called memory effect does not occur unlike Ni-Cd batteries, and since it is relatively stable against temperature and charge / discharge, it has a much longer life than Ni-Cd batteries. This improves the reliability of the equipment and eliminates environmental problems such as the disposal of unnecessary batteries caused by replacement.

According to the second aspect of the present invention, since the charger is provided with a stationery function corresponding to a plurality of device models of the same model or different models, one charger can be used for a plurality of types or a plurality of same models. It can be adapted to the main body of the device, and in particular, it can be charged to the required amount in a short time with a polyacene secondary battery, so that energy can be saved and space efficiency can be increased because only one charger is required. .

According to the third aspect of the present invention, since the device body is provided with the display means for displaying the remaining capacity of the polyacene secondary battery,
The remaining capacity can be checked on the device itself, and the charging / discharging curve is linear.Since it is the remaining capacity display of the polyacene secondary battery, the capacity can be managed by the voltage and it is necessary to calculate the charging / discharging current. Without it, the remaining capacity can be easily displayed. In the invention of claim 4, since the voltage applied to the load using the polyacene secondary battery as a power source or the control of the load operation is performed by switching the voltage of the polyacene secondary battery, there is almost no loss. The capacity of the polyacene secondary battery can be fully utilized.

According to the fifth aspect of the present invention, since the charging control circuit for controlling the charging of the polyacene secondary battery is provided on the equipment main body side, the control corresponding to the capacity of the polyacene secondary battery built in the equipment main body is performed. Therefore, it becomes easy to charge a plurality of device main bodies at the same time, or to cope with a device main body having polyacene secondary batteries having different capacities with one charger.

According to the sixth aspect of the invention, since the main body of the device is an electric toothbrush main body, the characteristics of the polyacene secondary battery are utilized to facilitate measures against excessive tooth brushing and control of the tooth brushing time. By combining with the characteristics of, it becomes possible for a large number of people to use in public institutions such as schools. Further, since the polyacene secondary battery has a large capacity, it is possible to reduce the size and weight of the device body by using the polyacene secondary battery.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIGS. 1 and 2 show a circuit of Embodiment 1 of the present invention used for an electric toothbrush. As shown in FIG. 2, an electric toothbrush main body A and a charger B are separated from each other. When the housing 11 of the electric toothbrush main body A is placed on the housing 13 of the charger B, the primary winding L _{1 of the} inverter forming the charging circuit 1 built in the housing 13 of the charger B is formed. And the housing 1 of the electric toothbrush body A
The secondary winding L ₂ built in 1 is magnetically coupled in a non-contact manner and charged through the secondary winding L ₂ by the transformer action of the primary winding L ₁ and the secondary winding L _2. The output from the device B side is received by the electric toothbrush main body A side.

The charging circuit 1 on the charger B side is a diode block.
Ridge DB and capacitor C₁Adjusts commercial power AC
Flow smoothing and rectifying and smoothing the resulting DC
It is designed to be converted into high frequency alternating current. One
When the power is turned on, the resistance R₁Through the capacitor
C_TwoIs charged. This capacitor C_TwoVoltage Vb is
Return winding L_ThreeAnd resistance R_ThreeThrough FETQ₁At the gate of
Applied, and the above voltage Vb becomes the threshold voltage.
When it reaches, FETQ₁Turns on and FETQ₁When
The above primary winding L₁Diode D connected between₁of
The voltages Vt and Vd at both ends decrease. Primary winding L₁And magnetism
Feedback winding L coupled together_ThreePrimary winding L_TwoFrom
Feedback is applied by the induced voltage of the primary winding L₁And
Densa C _ThreeOscillation is started by the resonance circuit consisting of.
At this time, the voltage Vb is the FET Q ₁Gate thresh
It is below the threshold voltage. Where diode D_Two,
Resistance R_TwoVb> Vt (FETQ₁Is on),
Capacitor C_TwoIs discharged, the voltage Vb drops,
FETQ₁Shorten the ON period of. Conversely, FETQ₁No
If the period becomes too short, the capacitor C_TwoDischarge of electric charge
Because the electric power decreases, the resistance R₁Through capacitor C_TwoBut
When charged, its voltage Vb rises and stable self-excited oscillation
You. FETQ₁The current flowing through the resistor increases and the resistance R_Five,
R₆When the partial voltage output of_TwoBut
FETQ₁The gate voltage of the diode D_ThreeOrder
Directional drop voltage and transistor Q_TwoCollector-emitter
FETQ by dropping to the series voltage with pressure₁To force
It's supposed to be

On the other hand, on the side of the electric toothbrush main body A, a polyacene secondary battery C ₄ is connected to the secondary winding L ₂ via a diode D ₄ , a transistor Q ₈ and a diode D _5. high-frequency output that is output from the winding L ₃ after being rectified by the diode D _4, to charge the polyacene battery C ₄ through the transistor Q ₈ and the diode D _5.

Here, the polyacene secondary battery C_FourIs basically
Has the same characteristics as a capacitor, the capacitor capacity
Is C and the internal impedance of the capacitor is R, V = iRexp (-t / CR), and the voltage increases substantially linearly. However, in general
Polyacene secondary battery C_FourHas a large capacity but low withstand voltage
Therefore, it is necessary to control the voltage. This control element
Register Q₈And this transistor Q₈And control this
The control circuit constitutes the charge control circuit 2. Transistor
Q₈Is a resistor R on the base₉, Transistor Q_FourSeries circuit of
Are connected. Transistor Q_FourIs the diode D_Fourof
Resistance R due to half-wave output₈Capacitor charged through
C_ThreeConnect the base emitter to both ends of this capacitor
C_ThreeVoltage exceeds the base-emitter threshold voltage.
It turns on when it turns on, and when this turns on, the transistor Q₈
Flow the base current of the transistor Q₈Turn on.
Also transistor Q_FourTransistor Q when turned on_ThreeThe
Source current and transistor Q _ThreeTo turn on
Has become. Transistor Q_ThreeIs the secondary winding L_TwoAnd dio
Code D_FourResistor R in series circuit with₇And light emitting diode LE
It is connected via D and is a light emitting diode when turned on.
Applying electric current to the LED, polyacene secondary battery C_FourCharging
Is displayed by lighting.

[0016] On the other hand the resistor R ₁₁ is the polyacene battery C _4, the Zener diode ZD _1, are connected in parallel a series circuit of a capacitor C _6, polyacene battery C ₄
Charging progresses and the voltage across it becomes Zener diode ZD ₁
When the voltage exceeds the predetermined voltage set by the Zener voltage of
A current flows through the resistor R ₁₁ and the Zener diode ZD ₁ to charge the capacitor C ₆ . At both ends of the capacitor C ₆ are connected to the base and the emitter of the transistor Q _9, the transistor Q ₉ is turned on when the voltage of the capacitor C ₆ exceeds the threshold level of the base and the emitter of the transistor Q _9. A polyacene secondary battery C ₄ and a base-emitter of the transistor Q ₄ are connected between the collector and emitter of the transistor Q ₉ , respectively. When the transistor Q ₉ is turned on, the charge of the capacitor C ₃ is discharged. The transistor Q ₄ is turned off. When the transistor Q ₄ is turned off, the transistor Q ₈ is turned off and the charging current to the polyacene secondary battery C ₄ is cut off. At this time, the transistor Q _{3 is} also turned off and the light emitting diode LED is turned off, and this extinguishment indicates the completion of charging.

The resistor R ₈ and the capacitor C ₃ are used to secure the power source of the transistor Q ₄ during the charging operation and to have a hysteresis due to the polyacene secondary battery C ₄ to control the on / off timing of the transistor Q _8. There is. A load side circuit including a motor M for driving an electric toothbrush is connected to the polyacene secondary battery C ₄ via an operation switch SW. Generally, an electric toothbrush requires a circuit for keeping the rotation speed of the motor M stable, so that the load side circuit is provided with a control circuit 3 for keeping the rotation speed of the motor M stable. Here, the voltage of the polyacene secondary battery C _{4 serving as} a power source does not exhibit a flat voltage characteristic unlike the Ni-Cd battery that has been conventionally used in many devices, and changes linearly, so that the voltage of the motor M In order to keep the rotation speed stable, a circuit for making a constant voltage or a circuit for keeping a constant rotation is adopted as the control circuit 3 described above, but in this embodiment, a constant voltage circuit is adopted. .

That is, when the operation switch SW is turned on,
Polyacene secondary battery C ₄ → operation switch SW → resistor R ₁₂
→ transistor Q ₆ is turned on a current flows through a path of the base-emitter → polyacene battery C ₄ transistors Q _6, turned on also the transistor Q ₅ the base current of the transistor Q ₅ flows through this one. This turns on the polyacene secondary battery C ₄ → operation switch SW → transistor Q
₅ → Motor M → Polyacen secondary battery C ₄ A current flows in the path to start the motor M.

When the voltage across the motor M becomes high during the rotation operation of the motor M, the capacitor C ₇ is connected via the resistor R _14.
There is charged, the voltage across the capacitor C ₇ is exceeds the Zener voltage of the Zener diode ZD _2, the base current of the transistor Q ₇ flows, the transistor Q ₇ is turned on. When the transistor Q ₇ is turned on, the transistors Q ₆ and Q ₅ are turned off in this order. After that, the motor terminal voltage is stabilized by repeating this process.

By the way, as an electric toothbrush, there have been conventionally conceived measures against overbrushing, time management as a toothbrush management method, and a method of detecting a toothbrush pressure to give a warning or stop, but in the case of this embodiment, a power source is used. due to the use of polyacene battery C ₄ as this polyacene battery C ₄
By adjusting the capacity of the toothbrush to the toothbrushing time, it is possible to perform toothbrush management such that proper brushing can be performed until the motor M stops, and it is possible to control overbrushing and control the toothbrushing time, and the effect of two birds with one stone. can get.

Further, in the case of the same capacity of the polyacene secondary battery, it is considered that the number of revolutions and the brushing time are in inverse proportion to each other. Therefore, for example, the number of revolutions is set to 3 steps, 3000 rpm for 3 minutes, 2500 rpm for 4 minutes, 2000 rp
It can be used properly for 5 minutes at m, and it can be brushed at 3000 rpm for healthy people and when there is not enough time, 2000 rpm for people with weak teeth,
It is possible to use the same method for removing plaque.

Further, the electric toothbrush is conventionally used at home in such a manner that a large number of people use it while replacing the brush with one electric toothbrush main body, but it is often used at home due to hygiene problems or waiting time. Although it has not been popularized in public institutions (schools, etc.) such as the above, a non-contact type polyacene secondary battery C ₄ capable of being charged by a large current in the electric toothbrush main body A as in the present embodiment is provided. With the built-in one,
It becomes possible for each person to own the electric toothbrush body A, charge it immediately after eating and use it for one time.

By the way, the control system such as the control circuit 3 of the present embodiment has a simple structure and can be manufactured at a low cost, but since it is switched by the time constant of the resistor R ₁₄ and the capacitor C ₇ , the switching frequency and Since the switching control of the transistor is not stable, the loss of the transistor Q ₅ cannot be ignored in a device with high power. In such a case, if the voltage or the rotation speed is stabilized by a method such as the PWM control method, it is possible to operate the device with high efficiency.

(Embodiment 2) This embodiment is an embodiment used in an electric toothbrush for performing rotation speed switching and constant control of rotation speed by PWM control, and the circuit of the charging system of the polyacene secondary battery C ₄ is Since it is the same as the first embodiment,
The circuit configuration of the charging system is omitted, and the circuit of the load control system is shown and described. First, in this embodiment, as shown in FIG. 3, the counter electromotive voltage Ea of the motor M is detected, and the counter electromotive voltage Ea is detected.
Is input to an error amplifier in the PWM control circuit IC ₂ and compared with a reference voltage, and the difference voltage and the triangular wave voltage generated in the PWM control circuit IC ₂ are compared by a comparator to output a PWM signal and control The element S is controlled.

Here, the terminal voltage Em of the motor M is: Em = Ea + RaIa (1) where Ea: back electromotive voltage, Ra: internal resistance, Ia: motor current, and the back electromotive voltage Ea is Ea = Ka Na (2) where Ka: motor power generation constant, Na: rotation speed.

From this equation (2), it is understood that Ea should be controlled in order to keep the rotation speed Na constant. In this embodiment, the resistance R ₂₀ , the internal resistance Ra that is the motor winding resistance,
By forming a bridge circuit with the resistors R ₂₁ and R ₂₂ and making the resistance ratio the same, V = Ea is taken out. Further, in order to change the voltage for Ra · Ia, the speed can be changed by changing V _M of the capacitor Ca.

Then, the counter electromotive voltage Ea is supplied to the INPUT + terminal of the error amplifier 50 in the PWM control circuit IC ₂ shown in FIG.
It is input to the T-terminal and taken out as an error output, and the error output and the triangular wave voltage output from the triangular wave generating circuit 51 are compared by a comparator 52 to obtain a PWM waveform. In FIG. 4, the constant voltage circuit 53 is for obtaining the circuit power supply and the reference voltage Vref, and the drive circuit 54 is composed of two transistors in Darlington connection and is driven by the output of the comparator 52 to externally control the control element S. The PWM signal for switching is output.
The two resistors R ₀ have the same value, and the reference voltage Vref is 1 /
It is divided into 2 and output to the outside. Also an external capacitor Cb
The AC feedback capacitor, the capacitor Ct, and the resistor Rt form a time constant that determines the frequency of the triangular wave of the triangular wave generating circuit 51.

Thus, the PWM control circuit IC ₂ is shown in FIG.
As shown in FIG. 5, the comparator 52 is provided only by comparing the triangular wave voltage of the triangular wave generating circuit 51 and the output ERR of the error amplifier 50.
Outputs the PWM waveform shown in FIG. 5 (b). This PWM waveform signal is output to the drive circuit 54, and the drive circuit 54 outputs the PWM signal shown in FIG. This PWM signal limits the electric power supplied to the motor 5 via the control element S, and the rotation speed is kept constant.

The rotation speed can be switched by setting the voltage V _M by the variable resistor VR. That is, each time the switch SW ₀ is pressed, the control circuit IC ₁ turns on cyclically, and when the port P ₁ of the control circuit IC ₁ turns on, it is connected to this port P _1. The resistor R ₃₀ and the variable resistor VR which are connected in parallel are connected to each other, and 1/2 Vre of the PWM control circuit IC ₂ is connected.
Since f decreases, the voltage V _M also decreases and the rotation speed decreases.

Further, by setting the resistance R ₃₁ connected to the port P ₂ of the control circuit IC _{1 to} a value smaller than the resistance R ₃₀ , the resistance R ₃₁ changes when the port P ₂ is turned on.
When it is connected in parallel, the rotation speed of the motor 5 can be further reduced. Similarly, by setting the resistance R ₃₂ connected to the port P ₃ of the control circuit IC _{1 to} a value smaller than the resistance R ₃₁ , the resistance R ₃₂ is connected in parallel to the variable resistance VR when the port P ₃ is turned on. The rotation speed can be further reduced.

Therefore, by pressing the switch SW ₃ , one of the three rotation speeds A ₁ , A ₂ and A ₃ can be selected, and the desired tooth brushing time can be selected by selecting this rotation speed. It can be set. Further, in this embodiment, a means for displaying the remaining capacity of the polyacene secondary battery C ₄ is provided. That is, since the charging capacity and the voltage of the polyacene secondary battery C ₄ are in a proportional relationship, the remaining capacity can be known by managing the voltage. Therefore, in this embodiment, the voltage of the polyacene secondary battery C ₄ is set to the operation switch SW.
When the control circuit is turned on, the control circuit IC ₁ fetches it from the AD ₁ terminal,
A built-in A / D converter with reference voltage Vref as reference
By performing D / D conversion and comparing the A / D converted voltage value with a preset setting value, three light emitting diodes DL ₃ according to the voltage value of the polyacene secondary battery C ₄ are compared.
Through DL ₁ , lighting is displayed in three stages, for example, lighting of DL ₃ indicates a fully charged state, lighting of DL ₂ indicates an intermediate state, and lighting of DL ₁ informs the user of an empty state in which charging is required. Has become.

In the case of a device having a constant load, it is possible to display a standard indicating how many minutes can be used or how many minutes have been used at present. In FIG. 3, IC ₃ is a control circuit I
C ₁ reset circuit, X, C ₁₀ , C ₂₀ are control circuit IC ₁
Is a crystal oscillator and a capacitor for clock generation, and D ₁₀ is a surge absorbing diode for the motor M.

In the first and second embodiments, the electric toothbrush main body A is used as the main body of the apparatus, but the main body of the apparatus is a VTR camera, a portable tape recorder, a flashlight, a remote control transmitter, an electric shaver, a blood pressure monitor. , Power tools, word processors, personal computers, toys, electric hair clippers, etc. are also conceivable. In particular, since the charger B and the device body are connected in a non-contact type without using contacts, each of them is a polyacene secondary battery. It is also possible to charge various device bodies that have a built-in battery charger and have a charging control circuit using the same charger B. In this case, the charger B has a stationery function, and is especially compatible with each device body. It is possible to charge the required amount of polyacene secondary battery of the specified capacity in a short time, which saves energy and at the same time requires only one charger B for space. It is possible to raise rates.

Further, since a high-power device such as an electric tool requires a large number of large-capacity batteries, the weight of the entire device main body becomes heavy. Therefore, there was a problem of getting tired immediately, but using the charging device of the present invention is a non-contact type, and since it uses a polyacene secondary battery that can be charged with a large current as a power source, charging like a cordless iron It is also possible to place the tool body containing the polyacene secondary battery and the charge control circuit on the container to charge the polyacene secondary battery in a short time and start the work immediately after this charging is completed. Become.

[0035]

According to the first aspect of the present invention, the charger and the device main body having the built-in polyacene secondary battery are separated from each other, and when the charger and the device main body are combined and arranged, the output on the charger side is provided. Since the device main body is provided with a power receiving means for receiving the contactlessly and charging the polyacene secondary battery, a contact portion for electrically connecting the charger and the device main body is not required, and therefore a large charging current Can be easily secured,
The structure of the charger and the main body of the device can easily be made waterproof, and no spark discharge occurs when the charger and the main body of the device are combined and arranged or separated from the combined state, and dust is not generated on the contact part. It does not accumulate and is easy to clean. Furthermore, since a polyacene secondary battery is used, so-called memory effect does not occur unlike Ni-Cd batteries, and since it is relatively stable against temperature and charge / discharge, it has a much longer life than Ni-Cd batteries. This has the effects of improving the reliability of the device, improving the reliability of the device, and eliminating environmental problems such as the disposal of unnecessary batteries caused by replacement.

According to the second aspect of the present invention, since the charger is provided with a stationery function corresponding to a plurality of the same or different device main bodies, one charger can be used for a plurality of types or a plurality of the same models. It can be adapted to the device body,
In particular, since the polyacene secondary battery can be charged to a required amount in a short time, it is possible to save energy, and at the same time, it is possible to increase the space efficiency because only one charger is required.

According to the third aspect of the present invention, since the device body is provided with the display means for displaying the remaining capacity of the polyacene secondary battery, the remaining capacity can be confirmed on the device body side, and the charge / discharge curve is linear. Since the remaining capacity of the polyacene secondary battery is displayed, the capacity can be managed by the voltage, there is no need to calculate the charging / discharging current, and the remaining capacity can be easily displayed.

According to the fourth aspect of the present invention, the voltage applied to the load using the polyacene secondary battery as a power source or the control of the load operation is performed by switching the voltage of the polyacene secondary battery. There is an effect that the capacity of the polyacene secondary battery can be fully utilized without using it. According to the invention of claim 5, since the charging control circuit for controlling the charging of the polyacene secondary battery is provided on the device body side, it is possible to perform control corresponding to the capacity of the polyacene secondary battery built in the device body. There is an effect that it becomes easy to charge a plurality of device main bodies at the same time, or to cope with device main bodies having polyacene secondary batteries having different capacities with one charger.

According to the sixth aspect of the invention, since the device body is composed of the electric toothbrush body, it is possible to take advantage of the characteristics of the polyacene secondary battery to facilitate measures against excessive tooth brushing and control of the tooth brushing time. Combined with the characteristics of, there is an effect that a large number of people can be used in public institutions such as schools. Furthermore, by using the polyacene secondary battery, it is possible to reduce the size and weight of the device body.

[Brief description of drawings]

FIG. 1 is a circuit diagram according to a first embodiment of the present invention.

FIG. 2A is an external perspective view of the same. (B) is an enlarged sectional view of a main part of the above.

FIG. 3 is a circuit diagram of a second embodiment of the present invention.

FIG. 4 is a circuit block diagram of the above PWM control circuit.

FIG. 5 is a waveform diagram for explaining the operation of the above PWM control circuit.

[Explanation of symbols]

1 Charging Circuit 2 Charging Control Circuit 3 Control Circuit A Electric Toothbrush Body B Charger L ₁ Primary Winding L ₂ Secondary Winding M Motor C ₄ Polyacene Secondary Battery SW Operation Switch

Claims (6)

[Claims] 1. A charger and a device main body containing a polyacene secondary battery are separately separated, and when the charger and the device main body are combined and arranged, the output of the charger side is received in a non-contact manner. A non-contact type charging device characterized in that a power receiving means for charging a polyacene secondary battery is provided in a main body of the device. 2. The non-contact type charging device according to claim 1, wherein the charger is provided with a stationery function corresponding to a plurality of device models of the same model or different models. 3. The non-contact type charging device according to claim 1, wherein the device body is provided with a display means for displaying the remaining capacity of the polyacene secondary battery. 4. The non-contact type according to claim 1, wherein the voltage applied to the load using the polyacene secondary battery as a power source or the control of the load operation is performed by switching the voltage of the polyacene secondary battery. Charging device. 5. A non-contact type charging device characterized in that a charging control circuit for controlling charging of a polyacene secondary battery is provided on the equipment main body side. 6. The non-contact charging device according to claim 1, wherein the device body is an electric toothbrush body.