KR20100106774A - No powered adaptor equipped with battery - Google Patents

Abstract

PURPOSE: An uninterruptible adapter equipped with a battery is provided to minimize damage in case of black-out by including a battery and a charging circuit in order to supply power. CONSTITUTION: A converting part converts commercial alternating-current power source into direct-current power source. The converting part includes a filtering part which eliminates noises of input alternating power source. A charging part charges a battery using the output power of the converting part. A power selecting part generally supplies the output power to a load side. The power selecting part supplies the power of the battery to the load side.

Description

Uninterruptible Adapter with Built-in Battery {NO POWERED ADAPTER EQUIPPED WITH BATTERY}

The present invention relates to an adapter that converts commercial AC power into DC power and supplies the device to a device that requires power, such as a telephone or a set-top box. The uninterruptible adapter with built-in battery, which prevents the power supply on the load side from being suddenly interrupted or prevents the use of the power supply on the load side until the power failure is restored, and the charging circuit is provided to keep the battery fully charged at all times. It is about.

As is well known, the adapter converts a commercial AC power input into a DC power supply and supplies the same to the load side power supply.

The conventional adapter simply supplied a commercial AC power input to the DC power of the size required by the power supply on the load side,

If necessary, a power factor correction circuit or a filter circuit or an electrostatic source circuit is added to increase power quality, but an adapter for power failure has not been disclosed until now.

Therefore, in case of power failure, the power supply could not be used until the power failure was recovered.In case of sensitive power supply, the product may be damaged by sudden power supply interruption.In case of a power supply such as a computer or PMP, the built-in program may be damaged or The file you were working on couldn't be saved and flew away.

 Therefore, it is necessary to supply power to the power supply unit on the load side for a certain time even during a power failure so that such a problem does not occur.

The present invention has been made in view of the above problems and necessities, and has a battery and a charging circuit that keeps the battery in a fully charged state so that it can be used by supplying power to the power supply unit on the load side for a predetermined time even during a power failure. An object of the present invention is to provide an uninterruptible battery adapter with a built-in battery which prevents damage to a power supply device on a load side due to a sudden power failure.

Battery-embedded uninterruptible adapter of the present invention for achieving the above object

battery;

A converter unit converting the commercial AC power to DC power and outputting the same;

A charging unit charging the battery with an output power of the converter unit;

The power supply selection unit for supplying the output power of the converter unit to the load side in normal times, the power supply of the battery to the load side in case of power failure.

And the power selector

A first transistor which is turned on / off in accordance with the presence or absence of power from the converter and allows power to be input from the converter or battery according to an on / off state;

Characterized in that it comprises a regulator for converting the power input from the battery into a power of the required size on the load side and outputs,

The converter section

A filter unit for removing noise of an input AC power supply,

An expansion unit for smoothing the output power of the filter unit;

A first transformer for transforming the output power of the smoothing unit;

A direct current unit for smoothing and directing the output power of the first transformer;

It comprises a second transistor for controlling the magnitude of the secondary output power by switching the power input to the primary side of the first transformer,

The charging unit

A charging current applying unit for processing a power input from the converter to apply a charging current to the battery;

A third transistor supplying or blocking a charging current of the charging current applying unit to a battery;

A detector for detecting a charging state of the battery;

And a first controller configured to receive a signal from the detector and control the on / off of the transistor.

The converter section

A fuse (F1) for blocking an overcurrent of an input commercial AC power supply,

The filter unit is composed of a capacitor (C1, C2) and inductor (L2) connected in parallel with each other,

The smoothing part consisting of bridge diodes (D2, D3, D4, D5) and capacitors (C3, C4) connected in parallel with each other,

A second control unit U1 for controlling switching of the second transistor Q1;

Driving power supply resistors R2 and R4 for supplying initial driving power to the second control unit;

A second transformer T2 magnetically coupled to the first transformer T1,

A first driving power supply comprising a diode D8, a resistor R8, and capacitors C11 and C12, and smoothing the induced power of the second transformer to supply driving power to the second control unit;

A resistor (R10) for sensing a voltage induced in the second transformer and transmitting the magnitude of the output power of the first transformer to the second controller;

Resistors R9 and R11 and a capacitor C7 connected to the gate terminal of the second transistor to prevent an overcurrent from flowing through the second transistor;

It includes the direct current unit consisting of a diode (D6, D7), an inductor (L1), a capacitor (C5, C6), a resistor (R6) connected to the secondary side of the first transformer,

The charging unit

It comprises a fourth transistor (Q4), regulator (U2), resistors (R19, R20, R21, R26), capacitor (C16) to convert the power input from the converter to drive power to the first control unit (U3) A second drive power supply for supplying

The third control unit U4 for keeping the resistors R14, R15, R23, and R24 outputting the charging current and the output charging current of the resistors R14, R15, R23, and R24 constant (that is, constant current). And the charging current applying unit comprising a,

Resistors (R16 and R25) for sensing the magnitude of the output charging current of the charging current applying unit and transmitting the magnitude of the output charging current to the first control unit;

A fifth transistor Q2 connected to the third control unit and blocking power input from the converter to prevent overcharging of the battery BAT;

The sensing unit is composed of a charge detection resistor (R37, R40) for detecting the state of charge of the battery,

It is connected to the first control unit and comprises an LED (LD1) for indicating the state of charge of the battery,

The first controller transmits the charging current sensed by the resistors R16 and R25 to the third controller.

The power selector

A resistor (R17) for supplying power input from the converter to the base terminal of the first transistor (Q6) to turn on / off the first transistor;

An inductor L3 for boosting the voltage input from the battery, a diode D10, resistors R22, R28, and capacitors C15, C18 are rectified to supply the load to the load side of the inductor L3. And a regulator unit including a rectifier unit and a fourth control unit U4 for controlling the step-up voltage of the inductor L3.

The present invention having the configuration as described above is provided with a battery and a charging circuit, it is possible to supply power to the load side for a certain time even during a power failure to minimize the damage caused by the power failure, and contribute greatly to the stability and benefits of the load-side power products can do.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a block diagram of a battery built-in uninterruptible adapter according to the present invention, Figure 2a, b is a specific circuit diagram of Figure 1, as shown in the present invention is a battery (BAT), converter 100, charging unit ( 200) and a power selection unit 300.

The battery has a capacity of supplying power to the load side for about 30 minutes to 1 hour, and is normally charged through the charging unit 200 in an uninterruptible state to maintain a full state, and when a power failure occurs, Is supplied to the load side.

The converter unit 100 receives commercial AC power, converts it into DC power, and supplies the same to the load side. The converter 100 also supplies the charging unit 200 and the power selection unit 300.

The converter unit 100 includes a filter unit 110, a smoothing unit 120, a first transformer, a direct current unit 140, a second transistor, a fuse, a second control unit, a second transformer, and a first driving power supply unit 130. ) And the like.

First, a fuse F1 is connected to the input terminal to block an overcurrent of a commercial AC power input to protect a circuit thereafter.

The filter unit 110 is composed of a capacitor (C1, C2) and an inductor (L2) connected in parallel to each other to remove the noise of the commercial AC power input.

The smoothing unit 120 is composed of bridge diodes (D2, D3, D4, D5) and capacitors (C3, C4) connected in parallel to each other to smooth the AC power passing through the filter unit 110 to convert to DC power. .

The resistors R2 and R4 connected to the output of the smoothing unit 120 supply driving power for the initial driving of the second control unit U1.

The output power of the smoothing unit 120 is supplied to the first transformer T1, and the second transistor Q1 switches the output power of the smoothing unit 120 supplied to the first transformer to control the pulse width. .

The second transformer T2 is magnetically coupled to the first transformer T1, and the first driving power supply unit 130 converts the voltage induced in the second transformer into a DC power source so that the second control unit U1 Supply driving power to). The first driving power supply unit 130 includes a diode D8, a resistor R8, and capacitors C11 and C12.

In addition, the resistor R10 connected to the second transformer senses a voltage induced in the second transformer and transmits the voltage to the second controller. The second control unit U1 indirectly detects the magnitude of the output power of the first transformer through the magnitude of the induced voltage of the second transformer sensed by the resistor R10, and based on this, the second transistor Q1. To control the switching.

The resistors R9 and R11 and the capacitor C7 connected to the source terminal of the second transistor Q1 block and protect the overcurrent from flowing through the second transistor.

In addition, the resistors R3 and R5, the capacitor C14, and the diode D7 connected in parallel with the first transformer T1 prevent the reverse voltage from being applied to the filter part or the peace part, and the second transistor Q1 The drain voltage is filtered (peak suppressed).

The resistor R12, thermistor NTC, and the capacitor C8 connected to the second control unit U1 allow the second control unit to perform stable operation (mainly oscillation for switching control).

The DC unit 140 connected to the output terminal of the first transformer T1 rectifies and smoothes power induced in the secondary winding of the first transformer to DC power to convert the charging unit 200 and the power selector 300 into a DC power source. It supplies and also supplies to a load side. The DC unit 140 includes diodes D6 and D7, an inductor L1, capacitors C5 and C6, and a resistor R6.

The charging unit 200 includes a second driving power supply unit 210, a first control unit, a charging current applying unit 220, an LED LD1, a third transistor, a fifth transistor Q2, and a detection unit 230. It is made to include.

The second driving power supply 210 is composed of a fourth transistor Q4, a regulator U2, resistors R19, R20, R21, R26, and a capacitor C16 and is input from the converter unit 100. The power is stepped down to supply driving power to the first control unit U3. The first control unit U3 supplies the driving power to the third control unit U4 again.

The charging current applying unit 220 is a third control unit for keeping the resistors R14, R15, R23, and R24 and the output charging current of the resistors R14, R15, R23, and R24 constant (that is, constant current). It comprises (U4) and applies a constant current charging current to the battery.

The third control unit U4 receives the driving power from the first control unit and receives the magnitude of the charging current applied to the battery from the first control unit. The third control unit U4 receives a predetermined amount of current through the resistors R14, R15, R23, and R24. That is, constant current is output.

The fifth transistor Q2 connected to the third control unit U4 is controlled to be turned on / off by the third control unit to prevent the reverse voltage from being applied to the second driving power supply unit 210 or the converter unit 100. do.

The resistors R16 and R25 and the capacitor C14 connected to the output terminals of the resistors R14, R15, R23, and R24 once again rectify the charging current applied to the battery, and also the resistors R16 and R25. Detects the magnitude of the current applied to the battery and transmits it to the first controller Q1.

The third transistor Q3 connects the charging current applying unit 220 and the battery BAT and is controlled on / off by the first control unit U3 to supply or block the charging current to the battery.

In addition, the detector 230 including two resistors R37 and R40 connected in series to the battery BAT detects the state of charge of the battery (that is, whether the battery is in a full or discharge state). U3), and the first control unit receiving the transmission controls the on / off of the third transistor Q3.

The LED LD1 connected to the first control unit U3 emits light in two colors so that the state of charge of the battery can be checked with a visual field. For example, when light is emitted in red, charging is performed in a discharged state. When light is emitted in blue, it is in a fully charged state and there is no charge. When the light is not turned on, an electrostatic state can be displayed.

The power selector 300 includes a first transistor Q6 and a regulator 310, and supplies an output power of the converter unit 100 to a load side during an uninterruptible power supply, and supplies power from the converter unit 100. When there is no power supply, the battery BAT is supplied to the load side.

The first transistor Q6 is turned on / off by connecting a resistor R17, which receives power from the converter unit 100, to the base terminal, such that power of the converter unit 100 or the battery is supplied to the load side. In the present invention, when the first transistor Q6 is turned off, the power supply of the converter unit 100 is supplied to the load side, but may be reversed (when the first transistor Q6 is turned on).

The regulator unit 310 includes a fourth control unit U4, a rectifier 320, and an inductor L3.

The inductor L3 boosts the power supplied from the battery, and the rectifier 320 rectifies the boosted power and supplies it to the load side. The rectifier 320 includes a diode D10, resistors R22 and R28, and capacitors C15 and C18.

In addition, the fourth controller U4 controls the magnitude of the voltage boosted and output to the rectifier 320 by controlling the current applied to the inductor L3 and the magnitude thereof.

The capacitor C17 provided in front of the fourth control unit U4 is charged with the power of the battery, and the charged power is discharged to the inductor L3 to be used for boosting.

And, as shown in the drawing, the power selector 300 may be provided in plural so that a plurality of load side power supplies are connected.

In the above description of the present invention with reference to the accompanying drawings has been described for a battery-embedded uninterruptible adapter having a specific circuit diagram, the present invention can be variously modified and changed by those skilled in the art, such variations and modifications are the scope of protection of the present invention Should be interpreted as belonging to.

1 is a schematic block diagram of an adapter according to the invention;

2A and 2B are detailed circuit diagrams of FIG.

<Description of the symbols for the main parts of the drawings>

100: converter section 110: filter section

120: smoothing unit 130: first drive power supply

140: DC unit 200: charging unit

210: second driving power supply unit 220: charging current applying unit

230: detector 300: power selector

310: regulator part 320: rectifier part

Claims (4)

battery; A converter unit converting the commercial AC power to DC power and outputting the same; A charging unit charging the battery with an output power of the converter unit; And a power selection unit for supplying the output power of the converter unit to the load side during normal times and the power supply of the battery to the load side in case of power failure. The method of claim 1, wherein the power selector A first transistor which is turned on / off in accordance with the presence or absence of power from the converter and allows power to be input from the converter or battery according to an on / off state; And a regulator unit for converting and outputting power input from the battery into power having a required size on a load side. The method of claim 2, wherein the converter unit A filter unit for removing noise of an input AC power supply, An expansion unit for smoothing the output power of the filter unit; A first transformer for transforming the output power of the smoothing unit; A direct current unit for smoothing and directing the output power of the first transformer; It comprises a second transistor for controlling the magnitude of the secondary output power by switching the power input to the primary side of the first transformer, The charging unit A charging current applying unit for processing a power input from the converter to apply a charging current to the battery; A third transistor supplying or blocking a charging current of the charging current applying unit to a battery; A detector for detecting a charging state of the battery; And a first controller configured to receive a signal from the detector and control the on / off of the transistor. The method of claim 3, wherein The converter section A fuse (F1) for blocking an overcurrent of an input commercial AC power supply, The filter unit is composed of a capacitor (C1, C2) and inductor (L2) connected in parallel with each other, The smoothing part consisting of bridge diodes (D2, D3, D4, D5) and capacitors (C3, C4) connected in parallel with each other, A second control unit U1 for controlling switching of the second transistor Q1; Driving power supply resistors R2 and R4 for supplying initial driving power to the second control unit; A second transformer T2 magnetically coupled to the first transformer T1, A first driving power supply comprising a diode D8, a resistor R8, and capacitors C11 and C12, and smoothing the induced power of the second transformer to supply driving power to the second control unit; A resistor (R10) for sensing a voltage induced in the second transformer and transmitting the magnitude of the output power of the first transformer to the second controller; Resistors R9 and R11 and a capacitor C7 connected to the gate terminal of the second transistor to prevent an overcurrent from flowing through the second transistor; It includes the direct current unit consisting of a diode (D6, D7), an inductor (L1), a capacitor (C5, C6), a resistor (R6) connected to the secondary side of the first transformer, The charging unit It comprises a fourth transistor (Q4), regulator (U2), resistors (R19, R20, R21, R26), capacitor (C16) to convert the power input from the converter unit to drive to the first control unit (U3) A second driving power supply unit for supplying power; The third control unit U4 for keeping the resistors R14, R15, R23, and R24 outputting the charging current and the output charging current of the resistors R14, R15, R23, and R24 constant (that is, constant current). And the charging current applying unit comprising a, Resistors (R16 and R25) for sensing the magnitude of the output charging current of the charging current applying unit and transmitting the magnitude of the output charging current to the first control unit; A fifth transistor Q2 connected to the third control unit and blocking power input from the converter to prevent overcharging of the battery BAT; The sensing unit is composed of a charge detection resistor (R37, R40) for detecting the state of charge of the battery, Is connected to the first control unit and comprises an LED (LD1) for indicating the state of charge of the battery, The first controller transmits the charging current sensed by the resistors R16 and R25 to the third controller. The power selector A resistor (R17) for supplying power input from the converter to the base terminal of the first transistor (Q6) to turn on / off the first transistor; The inductor L3 boosts the voltage input from the battery, the diode D10, the resistors R22 and R28, and the capacitors C15 and C18 to rectify the output power of the inductor L3 and supply it to the load side. And a regulator unit including a rectifying unit configured to control the voltage and the step-up size of the inductor (L3), and a fourth controller (U4).

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