JPH114547A - Portable charger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the operation of a portable electronic apparatus through a portable charger until returning to its home by providing a portable charger with a battery containing section while incorporating a DC-DC converter for altering the battery voltage and outputting a DC voltage from a small jack. SOLUTION: The portable charger 10 comprises a section 15 for containing a single battery and incorporates a DC-DC converter for altering the voltage of a battery fixed thereto. It is also provided with a small jack 21 for outputting a altered DC voltage, as an output terminal. The small and lightweight charger 10 using a single battery is mounted on a portable electronic apparatus and connected through a connection cord with the power supply jack of a power supply unit when the power supply voltage for the portable electronic apparatus drops. Since supplementary charging is performed with the output voltage from the charger 10 and the voltage of the portable electrohic apparatus can be reset to a specified level, the portable electronic apparatus can be operated continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable charger capable of recovering batteries of various portable electronic devices.

[0002]

2. Description of the Related Art Today, various portable electronic devices such as portable telephones, portable tape recorders, portable MD recorders, and portable personal computers are frequently used. Many of these electronic devices use a general secondary battery such as a lithium battery or a dedicated secondary battery, and electronic devices that use a dedicated secondary battery, etc., use a dedicated charging device tailored to each electronic device. Vessel is used.

In these portable electronic devices, not only a secondary battery operated by a dedicated battery but also a standard cylindrical battery called an AA battery, an AA battery or an AAA battery, or a button battery is called. There are many devices that can be operated using any one or a plurality of primary batteries such as a mercury battery. Therefore, use a dedicated secondary battery or a general secondary battery by charging the dedicated battery with a charger, and purchase and use a primary battery such as an AA battery when the built-in secondary battery is exhausted. Is commonly done.

In these portable electronic devices, a DC-DC converter is incorporated while operating voltages of various incorporated circuits are set to 3.3 V or 5 V, etc.
In some cases, a single or two voltages are boosted and used to reduce the size and weight of a portable electronic device. As an example of a DC-DC converter incorporated in this portable electronic device,
As shown in FIG. 15, a control IC 35 and a coil of several μH are used.
There is a booster circuit using 53 and a smoothing capacitor 77 of several tens of [F].

As a control IC 35 of this booster circuit, a control IC called M62216FP manufactured by Mitsubishi Electric Corporation is used.
Some DC-DC converters use a control IC 35 as a booster circuit. The DC-DC converter controls the input terminal 31 of the DC-DC converter connected to the + terminal of the battery.
While connected to the seventh terminal which is the on / off terminal of C35,
The input side terminal 31 of this DC-DC converter is connected to the output side terminal 37 of the DC-DC converter via the step-up adjustment coil 53 and the output diode 65, and the middle point between the adjustment coil 53 and the output diode 65 is switched. Transistor
It is connected to the earth line via 81.

The switching transistor 81 has NP
Adjustment coil 53 using N-type transistor
The emitter is connected to the ground line at the midpoint between the output diode 65 and the output diode 65, and the base is connected to the third terminal, which is the PWM terminal of the control IC 35. The output side of the output diode 65 is connected to the eighth terminal which is a bias terminal of the control IC 35, and the output side of the output diode 65 is connected to the resistors 41 and 42, respectively.
Are connected to a second terminal as a first drive terminal of the control IC 35 and a first terminal as a second drive terminal via the control IC 35.

Further, the output side of the output diode 65 is connected to an earth line via a voltage dividing resistor 48, and an intermediate point of the voltage dividing resistor 48 is connected to a sixth terminal which is an IN terminal of the control IC 35. And the intermediate point is connected to F
It is connected to the fifth terminal which is the B terminal. Further, a smoothing capacitor 75 for input stabilization is inserted between the input terminal 31 and the ground line, and a smoothing capacitor 77 for output is inserted between the output terminal 37 and the ground line.
The fourth terminal, which is the ground terminal of C35, is connected to the ground line.

[0008] In the DC-DC converter which is a booster circuit using the control IC 35, when a DC voltage of 0.9 V or more is applied to the input terminal 31, the PWM output from the third terminal is used as an initial operation. The switching transistor 81 is turned on and off, and a counter electromotive force is generated by self-induction of the adjusting coil 53, so that the potential of the output smoothing capacitor 77 can be increased via the output diode 65.

The potential of the output smoothing capacitor 77 is 1.
When the voltage becomes 5 V or more, the intermittent speed of the switching transistor 81 is controlled so as to maintain a stable output voltage by the input from the first terminal and the second terminal which are the drive terminals and the eighth terminal which is the bias terminal, A proper output voltage is output to the output terminal 37 in accordance with the load current of the circuit connected to the output terminal 37.

Note that this booster circuit has an input voltage of 0.1.
It operates at a voltage of 9 V to 14 V, boosts the DC input voltage, and automatically forms an output voltage suitable for the operation voltage of the load circuit in the range of 1.5 V to 15 V as the DC output voltage. The M62216FP can also be used when forming a step-down circuit that lowers the voltage while reducing unnecessary power consumption.

[0011] As shown in FIG.
The input terminal 31 of the C-DC converter is connected to the seventh and eighth terminals of the control IC 35, and the input terminal 31 is connected to the output terminal 37 via the adjustment transistor 57 and the adjustment coil 55.
Also, a smoothing capacitor 75 for input stabilization is inserted between the input terminal 31 and the earth line, and an output smoothing capacitor 77 is inserted between the output terminal 37 and the earth line.

The adjustment transistor 57 has an NPN
Type transistor, the emitter is connected to the input terminal 31,
Connect the collector to the adjustment coil 55 and connect the base to the resistor 41
Is connected to the first terminal of the control IC 35, and the emitter is also connected to the resistor 42.
And to the second terminal of the control IC 35.
Further, the midpoint between the adjusting transistor 57 and the adjusting coil 55 is connected to the earth line via a zener diode 67, and the output side of the adjusting coil 55 is connected to the earth line via a voltage dividing resistor. The intermediate point of the voltage dividing resistor 48 is connected to the sixth terminal of the control IC 35, connected to the fifth terminal via the coupling capacitor 79, and the third and fourth terminals of the control IC 35 are connected to the ground line. Things.

In this DC-DC converter as a step-down circuit, when a DC voltage of 2 V to 15 V is applied to the input terminal 31, a voltage suitable for the load circuit voltage of 1.5 V to 14 V is applied to the output terminal 37. It is automatically formed as a voltage lower than the input voltage.

[0014]

As mentioned above, today,
2. Description of the Related Art Some portable electronic devices include a booster circuit and can be used using a small AA battery or the like, so that the portable electronic device is a portable electronic device. In addition, there is a type in which a dedicated secondary battery is incorporated and a dedicated charger and an electronic device are combined to enable carrying of a highly functional electronic device.

[0015] However, when the battery inside is exhausted while going out, a new battery may not be able to be purchased, and the portable electronic device may not be used.
A charger for a portable electronic device that uses a dedicated secondary battery and a charger normally charges a secondary battery using a household AC 100 V as a power supply, and the charger itself is suitable for carrying. There were many things that did not exist.

As described above, when the internal battery of the portable electronic device is exhausted while going out, there is a disadvantage that the electronic device itself cannot be used. The present invention eliminates such a disadvantage. It is intended to provide a charger suitable for portable use and to ensure that the portable electronic device operates until returning home.

[0017]

SUMMARY OF THE INVENTION The present invention includes a battery housing for accommodating one battery, and a built-in DC-DC converter for changing the voltage of a battery attached to the battery housing. The charger has a small jack for outputting a DC voltage as an output terminal.

As described above, the charger using one battery is small and lightweight, and is carried with the portable electronic device. When the power supply voltage of the portable electronic device drops, the charger and the electronic device are connected by the connection cord. By connecting the power supply jack, the supplementary charging is performed by the output voltage of the charger, and the voltage of the portable electronic device is returned to a predetermined voltage, thereby enabling the continuous use.

Further, the present invention provides a portable charger comprising a charger main body and an outlet adapter. The charger main body has a battery storage section for storing one standard cylindrical battery, and a battery storage section. The charger body has a built-in DC-DC converter for changing the voltage of the battery attached to the battery, and has a small jack for outputting a changed DC voltage as an output terminal, and the outlet adapter has one side inserted into the battery housing. It has an adapter body to obtain, and has an output terminal on each of both end surfaces of one side thereof, and makes the distance between the two output terminals equal to the distance between the electrodes of the standard cylindrical battery housed in the battery housing part of the charger body. An AC-DC converter is built in the adapter body, and one side opposite to the one side of the adapter body has an input adapted to a household AC outlet. It has a child, the input terminal voltage AC-
It may be a portable charger combined as an outlet adapter that outputs to an output terminal via a DC converter.

As described above, the charger constituted by the charger main body provided with the battery accommodating portion and the outlet adapter having the output terminal matched to the battery electrode has a circular curved surface of the outlet adapter in the battery accommodating portion. By inserting the input terminal of the outlet adapter into the household AC outlet, the power from the AC power
The DC voltage is converted by a C converter, this DC voltage is output from the output terminal of the outlet adapter and supplied to the charger main body, and the DC-DC converter of the charger main body converts the DC voltage to an appropriate voltage of the electronic device to be used in a portable electronic device. It can be supplied to equipment and the like.

Further, according to the present invention, it is preferable that the battery storage portion of the charger is a battery storage portion adapted to a size for storing AA batteries. As described above, the portable charger that accommodates one AA battery is small and lightweight, and has improved portability.
Also, it is easy to obtain batteries. In the present invention, 1
A battery accommodating section for accommodating the standard cylindrical batteries and changing a voltage of a battery attached to the battery accommodating section;
-A charger body with a built-in DC converter and a small jack for outputting a changed DC voltage as an output terminal, a car cigarette lighter-shaped insertion part, and a standard cylindrical battery shape housed in the charger body. It has a main body, and the insertion section is a car adapter that connects the inner cylinder and the outer cylinder to the + output terminal and the − output terminal provided at both ends of the main body, respectively, as a double structure of the inner cylinder and the outer cylinder, It may be a portable charger combined with a charger body.

[0022] As described above, the portable charger in which the car adapter and the charger main body are combined can reduce the power of the car battery by inserting the insertion portion of the car adapter into a cigar lighter hole provided on a dashboard or the like. Output to the output terminal of the main body of the car adapter, and since this main body is shaped like a standard cylindrical battery, by inserting this main body into the battery housing of the charger main body, the car battery is inserted into the charger main body. The power can be supplied, converted into an appropriate voltage for the electronic device by a DC-DC converter of the charger main body, and supplied to a portable electronic device or the like.

Further, the present invention provides an automobile cigarette lighter-shaped insertion portion at one end of the body portion, which has an insertion portion provided at the end with a + input piece and a-input piece around the insertion portion. It has a battery compartment for accommodating three AA batteries, has a built-in DC-DC converter for changing the voltage of the battery attached to the battery compartment, and has a small jack as an output terminal for outputting a changed DC voltage. In addition, the DC- switch is used to switch between the + input piece of the insertion section and the + contact of the battery storage section.
It may be a portable charger having a changeover switch connected to the input terminal of the DC converter.

As described above, the portable charger having the car cigarette lighter-shaped insertion portion at one end can charge a portable electronic device or the like with the power of the car battery by being inserted into the cigarette lighter hole. it can.
In addition, a portable electronic device formed by a body having a cigarette lighter-shaped insertion portion for a vehicle and a battery storage portion for storing one AA battery is small and lightweight, is easy to carry, and is separated from the vehicle. In some cases, a portable electronic device or the like can be charged with one AA battery.

The DC-DC converter incorporated in the charger body according to the present invention uses a control IC, an adjusting coil, an output diode, and a smoothing capacitor, interrupts a current by a switching transistor, and outputs a voltage by an adjusting coil. The voltage adjustment circuit forms an output voltage using a smoothing capacitor, and M62216FP manufactured by Mitsubishi Electric Corporation is used as a control IC of the voltage adjustment circuit. The input terminal of the DC-DC converter and the bias terminal of the control IC are connected to each other. A DC-DC converter is provided in which a current adjusting circuit is inserted in parallel with a resistor, and an input current is supplied from an input terminal to a bias terminal via the current adjusting circuit and the resistor.

As described above, the control IC M62216
DC-DC that drives a control IC and outputs a predetermined charging voltage even when the input voltage to the input terminal is a low voltage of 0.7 V by using a current adjustment circuit for input to the bias terminal of the FP. It can be a converter.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment of a portable charger according to the present invention.
As shown in FIG. 1, an embodiment of the present invention is an outlet adapter 100 that can be plugged into a household AC outlet.
And a portable charger formed by the charger main body 10 connectable to the outlet adapter 100.

As shown in FIG. 2, the charger main body 10
Each end wall 13 extends from both ends in the major axis direction of the flat rectangular body 11 having an appropriate thickness to one end in the short axis direction of the body 11.
Is projected. End wall 13 of this trunk 11
On the long side of the projecting direction, a concave groove curved in a substantially semicircular shape is formed along the long axis direction, and connection terminals 17 are provided inside the end walls 13 at both ends to form the concave groove and both ends. The wall 13 forms a battery housing 15 to which a standard cylindrical battery can be fixed.

The distance between the end walls 13 and the thickness of the body 11 are such that the charger main body 10 is small as a battery housing 15 adapted to the diameter and length of the AA battery of the standard cylindrical battery 90. Is becoming Further, the battery housing portion 15 is not limited to the case where it is formed by a concave groove curved in a substantially semicircular shape, but extends along the both sides of the body portion 11 in the same direction as the end wall 13, and the side wall is extended, In some cases, a rectangular space capable of accommodating a battery is formed, or a triangular groove is formed on the upper surface of the body 11 to stabilize a cylindrical battery.

A small female jack 21 such as a mini jack or a small earphone jack is provided at one end of the charger main body 10. As shown in FIG.
A circuit board 27 is provided inside 11, the connection terminals 17 and the jacks 21 are connected, and a voltage adjusting circuit is mounted on the circuit board 27. This voltage adjustment circuit 30 is a DC-DC converter using a control IC 35 and a coil and a capacitor. As shown in FIG. 4, this DC-DC converter connects one terminal 31 on the input side to an adjustment coil 51 and The first output diode 61 and the second output diode 63 are connected to the fixed terminal 22 of the jack 21 as an output terminal, and the other input terminal 31 is connected to the switch terminal 24 of the jack 21. .

As the control IC 35, M62216FP manufactured by Mitsubishi Electric Corporation is used, and the input terminals 31, 33 of the DC-DC converter are respectively connected to the connection terminals 17 provided on the end wall 13. . The control IC 35 is connected by connecting the + input terminal 31 to a seventh terminal which is an on / off terminal of the control IC 35, a first terminal which is a drive terminal of the control IC 35 via a first resistor 41, and The second terminal is the second
The third terminal 43, which is a bias terminal of the control IC 35, is connected in parallel with the third resistor 43 and the input adjustment transistor 86 of the current adjustment circuit 85 via the resistor 42. Is connected to the input terminal 31 for +.

A third terminal, which is a PWM terminal of the control IC 35, is connected to the base of the switching transistor 81, and the collector of the switching transistor 81 is connected to an adjusting coil.
The emitter of the switching transistor 81 is connected to the fourth terminal, which is the ground terminal of the control IC 35, at the midpoint between the first output diode 61 and the first output diode 61. Furthermore, the control IC 35
The fourth terminal, which is the ground terminal of the first terminal, is connected to the movable terminal 23 of the jack 21 serving as the output terminal, and a main smoothing capacitor 71 is inserted between the fourth terminal and the output side of the first output diode 61. An output smoothing capacitor 73 is inserted between the fourth terminal and the output side of the second output diode 63.

Further, between the first output diode 61 and the fourth terminal, a fourth resistor 44 and a light emitting diode 83 are connected in series and inserted in parallel with the main smoothing capacitor 71.
A midpoint between the light emitting diode 44 and the light emitting diode 83 is connected to the current adjusting circuit 85, and is connected to a fifth terminal which is an FB terminal of the control IC 35 via a fifth resistor 45 and a coupling capacitor 79,
The sixth terminal, which is the IN terminal of the control IC 35, is connected to the midpoint between the fifth resistor 45 and the coupling capacitor 79 and the sixth resistor
This is connected to the negative input terminal 33 via 46.

The current adjusting circuit 85 includes an input adjusting transistor 86 and a limiting resistor 87, uses a PNP transistor as the input adjusting transistor 86, and connects the collector to the + input terminal 31. The emitter is connected to the eighth terminal of the control IC 35, and the base is connected to the fourth terminal via the limiting resistor 87.
It is connected to the middle point between the resistor 44 and the light emitting diode 83.

The first resistor 41 of the DC-DC converter used as the voltage adjusting circuit 30 is 500 KΩ, the second resistor 42 is 300 KΩ, the third resistor 43 is 220 KΩ, and the fourth resistor 44.
Is 33 KΩ, the fifth resistor 45 is 4 KΩ, and the sixth resistor 46 is 2
KΩ, the limiting resistor is 10KΩ, and the adjusting coil 51 is 1
00 μH, the main smoothing capacitor 71 and the output smoothing capacitor 73 are both 10 μF. By using a PNP bipolar transistor having low impedance and high-speed response for the switching transistor 81, both input terminals 3
A DC-DC converter operating at a voltage applied between 1,33 and 0.7V to 18V, wherein the DC-D
The output of the C converter is capable of outputting a voltage of 1.5 V to 20 V, and the output power is 1 W, for example, 3.3 V or 6 V corresponding to the charging voltage of a secondary battery as a load circuit connected via the jack 21. And a voltage adjustment circuit that outputs the voltage automatically adjusted.

This DC-DC converter performs a boosting operation for increasing the output voltage with respect to the input voltage.
It operates mainly by the input current from the eighth terminal, outputs a high-frequency PWM signal from the third terminal, and
The output voltage is divided by the fourth resistor 44 and the light emitting diode 83 to lower the voltage input to the fifth terminal and the sixth terminal. To output a voltage automatically adjusted by the charging voltage of the main smoothing capacitor 71 and the output smoothing capacitor 73.

When the input voltage is higher than the proper output voltage of 1 W output, the operation of the control IC 35 is determined by the input current from the first terminal and the second terminal, and the P IC from the third terminal is determined.
The output current of the WM signal is small and the frequency is low,
A voltage drop is caused by the impedance of the adjusting coil 51 to lower the voltages of the main smoothing capacitor 71 and the output smoothing capacitor 73 to form an output voltage that matches the voltage of the load circuit.

As described above, this DC-DC converter uses the current adjustment circuit 85 to control the control IC from the input terminal 31.
By adjusting the current input to the eighth terminal of 35,
Start operation from 0.7V as input voltage, maximum 18V
Thus, an appropriate output voltage according to the load connected to the jack 21 can be automatically formed even if the above voltage is input.

In this voltage adjusting circuit 30, a male jack is inserted because a small jack 21 for output uses a jack 21 having a switch terminal 24 and a movable terminal 23 normally turned off. In this case, the movable terminal 23 and the switch terminal 24 come into contact with each other to activate the control IC 35, and the operation of the control IC 35 can be stopped by removing the male jack. Charger main body 10.

Further, as shown in FIG. 5, the outlet adapter 100 to be combined with the charger main body 10 is formed by an adapter main body 101 having a predetermined thickness and a substantially rectangular shape having a semicircular curved surface on one side. A positive output terminal 105 and a negative output terminal 107 are formed at both ends of one side of a semicircular curved surface as shown in FIG.
The battery compartment 15 of the charger body 10 such as AA batteries
In accordance with the distance between the electrodes of the standard cylindrical battery to be housed, the semicircular curved surface has a curved surface corresponding to the diameter of the standard cylindrical battery, and the thickness of the adapter body 101 also matches the diameter of the standard cylindrical battery. is there.

A plug-shaped input terminal 103 to be inserted into an outlet of a household AC power supply is provided on one side opposite to the side having the semicircular curved surface, and a push switch or the like is provided on one side having the semicircular curved surface. Is provided. Note that one side of the outlet adapter 100 is not limited to a semicircular curved surface, but may be any shape such as a rectangular shape or a triangular prism shape that matches the shape of the battery storage portion 15 formed in the charger main body 10.

Also, inside the adapter body 101,
As shown in FIG. 6, an AC-DC converter is incorporated. This AC-DC converter has two input terminals 10
A capacitor 111 for noise cut is inserted between 3, 103 and one input terminal 103 is connected to the first diode 11 for rectification.
3. The thyristor 115 and the second diode 117 for rectification are connected to the + output terminal 105, the other input terminal 103 is connected to the-output terminal 107 via the normally-off switch 125, and the + output terminal 105 is connected. The control circuit 121 is connected between the input terminal 103 and the input terminal 103 via the first rectifying diode 113 and the switch 125.
103, and the control input terminal of the control circuit 121 is connected to the output side of the second rectifying diode 117.
Is connected to the gate of the thyristor 115.

And, this AC-DC converter is
When the input terminal 103 is plugged into an outlet of a commercial power supply of 100 V AC, half-wave rectification is performed by the first diode 113 for rectification, and when the switch 125 is turned on, the voltage chopped by the thyristor 115 is smoothed. 1
To the thyristor 1 from the control circuit 121 in accordance with the voltage input to the control input terminal of the control circuit 121.
The timing of the control output signal output to the 15 gate is changed, and the voltage of the smoothing capacitor 119, that is, the + output terminal 105 is changed.
And the potential difference between the output terminal 107 and the negative output terminal 107 is about 10 V.

Therefore, the input terminal 103 of the outlet adapter 100 is inserted into the AC outlet, and one side of the adapter body 101 having a semicircular curved surface is connected to the charger body 10.
If you connect the charger body 10 by inserting it into the battery
The switch 125 of the outlet adapter 100 is pushed into the ON state by the curved surface formed as the battery storage portion 15 of the charger body 10, and the AC-DC converter of the outlet adapter 100 is operated to output a DC 10V voltage to the + output of the outlet adapter 100. A DC voltage of an allowable range is supplied to the connection terminal 17 of the charger main body 10 from the + output terminal 105 and the − output terminal 107 of the outlet adapter 100 by outputting to the terminal 105 and the − output terminal 107. Power can be supplied to the DC converter.

When the jack 21 of the charger main body 10 and various portable electronic devices are connected by a connection cord, the DC-DC converter of the charger main body 10 operates, and the home A
Various electronic devices incorporating a secondary battery can be charged by the C power supply. As described above, the distance corresponding to the electrode of a standard cylindrical battery such as an AA battery is set to + the output terminal 105.
And the outlet adapter 100 which forms the output terminal 107 and incorporates a regulator such as an AC-DC converter can be easily reduced in size and weight. The charger main body 10 having the battery storage section 15 capable of storing the battery can be easily reduced in size and weight.

Therefore, the portable charger combining the outlet adapter 100 and the charger main body 10 is easily carried, and even when traveling for a long time, it is possible to charge the electronic device at a place of stay and to safely use the electronic device. Use can be made. In addition, this charger body 10 is an outlet adapter 10
When 0 is removed, as shown in FIG. 7, a standard cylindrical battery 90 such as an AA battery is inserted to enable charging of the electronic device. Ten
When the battery of the portable electronic device is depleted by inserting and holding the standard cylindrical battery 90 in the portable electronic device 90, it is necessary to charge the secondary battery of the portable electronic device and ensure a short use until returning home. Can be.

When one manganese battery 90 is used, the DC-DC converter which is the voltage adjusting circuit 30 of the charger main body 10 can operate up to 0.7V. Power can be sufficiently extracted to charge the battery of the electronic device. In addition, since the charger main body 10 can output 1 W as an output, it can be directly used as a power supply for an electronic device with low power consumption.

The AC-DC converter has an AC of 10
Without limiting to converting 0V to DC 10V,
AC-DC that converts AC 120V to DC 10V
If it is a converter, it can be used abroad, and it can be used to convert AC 200V to DC 10V.
A DC converter may be incorporated in the outlet adapter 100.

The adapter to be combined with the charger main body 10 is not limited to the AC outlet type. As shown in FIGS. 8 and 9, a cigarette lighter-shaped insertion portion 141 and a standard cylindrical battery are used. There is also a case where the car adapter 130 is constituted by the columnar main body portion 131. This car adapter 130 has an inner cylinder 145 and an outer cylinder 143
And an insertion portion 141 having a double cylindrical structure.
41 can be inserted according to the shape of the cigar lighter hole provided in the dashboard 161 of the car, etc., the cylindrical body 131 is adapted to the length and diameter of a standard cylindrical battery 90 such as AA batteries + Output terminal 133 at both ends as shape
And an output terminal 135 are formed so that the axis of the cylindrical main body 131 and the axis of the insertion portion 141 are orthogonal to each other.

Therefore, as shown in FIG.
Is inserted into the cigarette lighter hole of the dashboard 161, and the cylindrical main body 131 is inserted into the battery storage section 15 of the charger main body 10 and is coupled to the charger main body 10. Power can be supplied to the voltage adjustment circuit of the charger main body 10 by the battery, the DC-DC converter of the charger main body 10 can be operated, and the portable electronic device connected to the jack 21 can be charged.

The insertion portion 141 and the cylindrical main body 131 are joined by a rotating pin 139 so as to be rotatable, and the insertion portion 141 is provided with a cutting portion 147 having a width corresponding to the diameter of the cylindrical main body 131. Then, the columnar main body 131 having a diameter of about AA battery can be rotated and overlapped with the insertion portion 141 as shown in FIG. 10 to make it more convenient to carry when not in use. Further, a regulator as shown in FIG. 11 may be built in the cylindrical main body 131 of the car adapter 130.

This regulator includes an adjusting resistor 155
And the constant voltage zener diode 156 and the input terminals 151 and 152 connected in series to the inner cylinder 145 and the outer cylinder 143 of the insertion portion 141,
-The input terminal 152 is connected to the-output terminal 135, the + input terminal 151 is connected to the + output terminal 133 via the limiting transistor 158,
The base of the limiting transistor 158 is connected to the midpoint between the adjusting resistor 155 and the constant voltage zener diode 156, and the output voltage is limited to about 10V.

The input terminal 152 is connected to the outer cylinder 143 of the insertion portion 141.
In addition, the + input terminal 151 is connected to the inner tube 145 of the insertion section 141. Therefore, the car adapter 130 incorporating this regulator is compatible with the direct current 12
Not only V but also 24V used in large vehicles, the output voltage is set to about 10V and the +
Power can be supplied from the output terminal 133 and the − output terminal 135 to the voltage adjustment circuit 30 of the charger body 10.

As shown in FIGS. 1 and 2, the charger main body 10 is not limited to the case where the end wall 13 protrudes from both ends of the body 11, as shown in FIG. , Cover 19
Cover when the battery is inserted into the battery compartment 15
19 may cover the battery. Furthermore, when using only the charger main body 10 as a portable charger using a battery, the charger main body 10 forms a battery storage portion 15 according to the shape and size of the C-cell, and a portable charger having a larger charging capacity is used. In some cases, a battery housing 15 for housing a button battery such as a mercury battery may be formed to make a smaller charger main body 10 easier to carry.

As another portable charger, FIG.
3, an end wall 175 is formed at one end of the body 173,
At the other end of the body 173, a connection wall 171 is formed to form a cylindrical insertion portion 191. A battery housing capable of inserting and fixing an AA battery by the body 173, the connection wall 171 and the end wall 175. There is a portable charger 170 that forms the part 177. This insertion part 191
Has a cylindrical shape that matches the shape of the cigar lighter hole provided on the dashboard of the car, etc.
The conductor as the input piece 195 has a conductor as the + input piece 193 at the tip, and has a regulator circuit 197 inside as shown in FIG.

This regulator circuit 197 is the same as the regulator built in the car adapter shown in FIG. 11, and connects the + input terminal 151 of the regulator circuit 197 to the + input piece 193 attached to the tip of the insertion section 191. Then, the negative input terminal 152 of the regulator circuit 197 is connected to the negative input piece 195 provided around the insertion section 191. 173
Has a board 27 inside, a push switch type changeover switch 185 in the battery storage section 177, and a voltage adjusting circuit 30 using a DC-DC converter is assembled on the board 27.

When the AA battery is inserted into the battery housing 177, the changeover switch 185 turns on the positive contact of the battery housing 177.
181 is connected to the + input terminal 31 of the voltage adjustment circuit 30, and when the AA battery is removed, the + output terminal 133 of the regulator circuit 197 is connected to the + input terminal 31 of the voltage adjustment circuit 30. is there. Also, the -output terminal 135 of the regulator circuit 197
Is connected to the negative input terminal 33 of the voltage adjusting circuit 30 together with the negative contact 183 provided on the connection wall 171.

The changeover switch 185 is not limited to the case where a push-type switch is attached to the battery housing 177, and a slide-type changeover switch may be provided on the body 173, the connection wall 171 or the like. However, when a push-type switch is provided in the battery storage unit 177, the power supply to the voltage adjustment circuit 30 can be reliably and automatically switched to AA batteries or car batteries by inserting or removing AA batteries.

Further, the regulator circuit 197 incorporated in the insertion section 191 is omitted, and the -input piece 195 and the -contact 183 are combined and connected to the -input side terminal 33 of the voltage adjusting circuit 30, and the + input piece is connected.
193 may be connected to the + input terminal 31 of the voltage adjustment circuit 30 via the changeover switch 185. In this case, 12V
This is a portable charger 170 that can be used in a normal passenger car carrying a battery.

[0060]

According to the first aspect of the present invention, a battery accommodating portion for accommodating one battery is provided, and a DC-DC converter for altering a voltage of a battery attached to the accommodating portion is incorporated. A portable charger having a small jack for outputting a DC voltage as an output terminal.

Therefore, the size of the battery is set to be slightly larger than the size of one battery, so that the battery is suitable for carrying and can be charged by replenishing the power of a secondary battery or the like of the portable electronic device. Even when is exhausted, it is possible to use the portable electronic device until returning home.
The present invention described in claim 2 comprises a charger main body and an outlet adapter, and the charger main body has a battery storage section for storing one standard cylindrical battery and is attached to the battery storage section. It has a built-in DC-DC converter for changing the voltage of the battery, has a jack for outputting the DC voltage of which the voltage has been changed, and the outlet adapter has an adapter body that can be inserted into one side of the battery housing. Both ends are provided with output terminals, the distance between the two output terminals is made equal to the distance between the electrodes of the standard cylindrical battery, an AC-DC converter is built in the adapter body, and the one side of the adapter body is The portable charger has an input terminal on one side facing the household AC outlet. Therefore, by inserting one side of the outlet adapter into the battery housing of the charger main body, the power from the household AC power supply is supplied to the charger main body, and the secondary battery of an electronic device or the like connected to the jack of the charger main body. It is a charger that can charge secondary batteries of electronic devices even with a manganese battery stored in the battery storage section of the charger body by removing the outlet adapter, and a small outlet-shaped adapter It is suitable for carrying as a small-sized charger main body, and can charge an electronic device with a battery outdoors and a household AC power source indoors.

The present invention according to claim 3 comprises a charger main body and a car adapter, and the charger main body comprises:
A battery compartment for accommodating one standard cylindrical battery and changing the voltage of the battery attached to the battery compartment;
It has a built-in C-DC converter, has a jack for outputting a changed DC voltage, and has a car adapter, a cigarette lighter-shaped insertion part for a car and a standard cylindrical battery-shaped main body housed in a charger main body. The insertion part has a double structure of an inner cylinder and an outer cylinder, and is a portable charger having a + output terminal and a − output terminal connected to the inner cylinder and the outer cylinder at both ends of the main body, respectively. is there.

Therefore, the secondary battery and the like of the portable electronic device can be charged by the power of the battery of the automobile or the standard cylindrical battery. Claim 4
The present invention described in (1) above is a portable battery charger having a battery compartment adapted to accommodate AA batteries as a battery compartment of the portable charger.

Therefore, the battery charger can be made compact and extremely convenient for carrying. Further, the present invention described in claim 5 has a cigarette lighter-shaped insertion portion at one end of the body portion, which has a + input piece at the tip and a-input piece on the outer periphery, and the body has a single unit. A DC-DC converter for changing the voltage of the battery attached to the battery compartment is provided, and a + input piece of the insertion portion or a + contact of the battery compartment is input to the DC-DC converter. A portable charger having a changeover switch connected to a terminal and having a small jack for outputting a changed DC voltage as an output terminal.

Therefore, it is easy to carry in a rod shape slightly larger than a small AA battery, and the secondary battery of a portable electronic device is powered by the power of a car battery or an AA battery which is a standard cylindrical battery. Etc. can be charged. According to a sixth aspect of the present invention, a DC-DC converter built in a charger main body of a portable charger uses a control IC, an adjusting coil, an output diode, and a smoothing capacitor, and intermittently supplies current by a switching transistor. Then, the voltage is changed by the adjusting coil, and the output voltage is formed by the smoothing capacitor to form a voltage adjusting circuit. M62216FP of Mitsubishi Electric Corporation is used as a control IC of the voltage adjusting circuit, and the input terminal of the DC-DC converter is used. A current-adjustment circuit is inserted in parallel with the resistor between the control terminal and the bias terminal of the control IC, and a DC-DC converter that supplies an input current from the input terminal to the bias terminal via the current-adjustment circuit and the resistor is provided. It is a portable charger.

Therefore, even when the output voltage of the standard cylindrical battery is low, the DC-DC converter is operated and a large amount of power such as a manganese battery is charged when the secondary battery of an electronic device is charged by the power of the manganese battery or the like. The battery can be used and charged, and even with a small manganese battery, the operation of the electronic device can be maintained and secured until returning home.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a portable charger according to the present invention.

FIG. 2 is a perspective view showing a charger main body of the portable charger according to the present invention.

FIG. 3 is a vertical sectional front view of a charger main body of the portable charger according to the present invention.

FIG. 4 shows a circuit of a DC-DC converter built in the charger main body of the portable charger according to the present invention.

FIG. 5 is a perspective view showing an outlet adapter of the portable charger according to the present invention.

FIG. 6 is a circuit diagram of an AC-DC converter incorporated in an outlet adapter of the portable charger according to the present invention.

FIG. 7 is a front view showing another usage example of the portable charger according to the present invention.

FIG. 8 is a diagram showing another embodiment of the portable charger according to the present invention.

FIG. 9 is a perspective view showing a car adapter of the portable charger according to the present invention.

FIG. 10 is a diagram showing a non-use state of the car adapter of the portable charger according to the present invention.

FIG. 11 is a diagram showing a regulator circuit built in the car adapter of the portable charger according to the present invention.

FIG. 12 is a perspective view showing another shape of the charger main body of the portable charger according to the present invention.

FIG. 13 is a perspective view showing another embodiment of the portable charger according to the present invention.

FIG. 14 is a vertical sectional view showing another embodiment of the portable charger according to the present invention.

FIG. 15 is a circuit diagram illustrating an example of a conventional booster circuit.

FIG. 16 is a circuit diagram showing an example of a conventional step-down circuit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Charger main body 11 Body part 13 End wall 15 Battery storage part 17 Connection terminal 19 Cover 21 Jack 27 Board 30 Voltage adjustment circuit 31, 33 Input side terminal 35 Control IC 37 Output terminal 41-46 Resistor 48 Voltage dividing resistor 51, 53, 55
Coil 57 Adjusting transistor 61, 63, 6
5,67 Diode 71,73,75,77 Smoothing capacitor 79 Coupling capacitor 81 Switching transistor 83 Light emitting diode 85 Current adjustment circuit 86 Input adjustment transistor 87 Limiting resistor 90 Standard cylindrical battery 100 Outlet adapter 101 Adapter body 103 Input terminal 105 , 107 Output terminal 111 Capacitor 113, 117 Diode 115 Thyristor 119 Smoothing capacitor 121 Control circuit 125 Switch 130 Car adapter 131 Cylindrical body 133, 135
Output terminal 139 Rotating pin 141 Insertion section 143 Outer cylinder 145 Inner cylinder 147 Cutting section 151, 152
Input terminal 155 Adjusting resistor 156 Zener diode 158 Transistor 161 Dashboard 170 Charger 171 Connection wall 173 Body 175 End wall 177 Battery housing 181 + Contact 183 -Contact 185 Changeover switch 191 Insertion section 193 + Input piece 195- Input piece 197 Regulator circuit

Claims (6)

[Claims] 1. A small-sized jack which includes a battery storage unit for storing one battery, includes a DC-DC converter for changing a voltage of a battery attached to the battery storage unit, and outputs a changed DC voltage. A portable charger having an output terminal. 2. A battery charger comprising a charger main body and an outlet adapter, wherein the charger main body includes a battery storage portion for storing one standard cylindrical battery, and a DC for changing a voltage of a battery attached to the battery storage portion. A built-in DC converter, further having a small jack for outputting a changed DC voltage as an output terminal, and the outlet adapter having a substantially rectangular adapter body that can be inserted into the battery housing on one side. An output terminal is provided on each end surface of both ends of this one side, and the distance between the two output terminals is made equal to the distance between the electrodes of the standard cylindrical battery housed in the battery housing part of the charger main body. An AC-DC converter is built in, and the adapter body has an input terminal on one side opposite to the one side, the input terminal being adapted to a household AC outlet. A portable charger, comprising: an outlet adapter for outputting to an output terminal via an AC-DC converter; and the outlet adapter and the charger main body. 3. A battery charger comprising a charger main body and a car adapter, wherein the charger main body includes a battery storage portion for storing one standard cylindrical battery, and a DC for changing a voltage of a battery attached to the battery storage portion. -A built-in DC converter and a small jack for outputting a changed DC voltage as an output terminal, and the car adapter has a standard cylindrical battery shape to be housed in a car cigarette lighter-shaped insertion portion and a charger body. The insertion part is a car adapter that connects the inner cylinder and the outer cylinder to the + output terminal and the − output terminal provided at both ends of the main body, respectively. A portable charger comprising a car adapter and the charger main body. 4. The portable charger according to claim 1, wherein the battery storage unit is a battery storage unit adapted to a size for storing AA batteries. 5. An automobile cigarette lighter-shaped insert at one end of the body, the insert having a positive input piece at the tip and a negative input piece at the outer periphery, and the body being a single AA battery And a built-in DC-DC converter for changing the voltage of the battery attached to the battery storage unit. Further, the + input piece of the insertion unit or the + contact of the battery storage unit is connected to the DC-
A portable charger having a changeover switch for switching connection to an input terminal of a DC converter and having, as an output terminal, a small jack for outputting a changed DC voltage. 6. A built-in D in a charger body of a portable charger.
A C-DC converter is a voltage adjustment circuit that uses a control IC, an adjustment coil, an output diode, and a smoothing capacitor, intermits current with a switching transistor, changes the voltage with an adjustment coil, and forms an output voltage with a smoothing capacitor. , The control IC of this voltage adjusting circuit
Using Mitsubishi Electric Corporation M62216FP,
A current adjustment circuit is inserted in parallel with the resistor between the input terminal of the DC-DC converter and the bias terminal of the control IC, and the input current is input from the input terminal to the bias terminal via the current adjustment circuit and the resistor. The portable charger according to any one of claims 1 to 4, wherein the portable charger is a DC-DC converter.